texlive[53789] Build/source/texk/web2c/luatexdir: sync with luatex

commits+lscarso at tug.org commits+lscarso at tug.org
Sat Feb 15 13:45:09 CET 2020


Revision: 53789
          http://tug.org/svn/texlive?view=revision&revision=53789
Author:   lscarso
Date:     2020-02-15 13:45:08 +0100 (Sat, 15 Feb 2020)
Log Message:
-----------
sync with luatex rev. 7287

Modified Paths:
--------------
    trunk/Build/source/texk/web2c/luatexdir/ChangeLog
    trunk/Build/source/texk/web2c/luatexdir/am/libluatex.am
    trunk/Build/source/texk/web2c/luatexdir/am/luapplib.am
    trunk/Build/source/texk/web2c/luatexdir/am/luatex.am
    trunk/Build/source/texk/web2c/luatexdir/font/luafont.c
    trunk/Build/source/texk/web2c/luatexdir/font/luatexfont.h
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    trunk/Build/source/texk/web2c/luatexdir/font/vfpacket.c
    trunk/Build/source/texk/web2c/luatexdir/image/epdf.h
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    trunk/Build/source/texk/web2c/luatexdir/image/writeimg.h
    trunk/Build/source/texk/web2c/luatexdir/lua/lcallbacklib.c
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    trunk/Build/source/texk/web2c/luatexdir/lua/lnewtokenlib.c
    trunk/Build/source/texk/web2c/luatexdir/lua/lpdfelib.c
    trunk/Build/source/texk/web2c/luatexdir/lua/lpdfscannerlib.c
    trunk/Build/source/texk/web2c/luatexdir/lua/luainit.c
    trunk/Build/source/texk/web2c/luatexdir/lua/luatex-api.h
    trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/README.md
    trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/config.ld
    trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/core_types.lua.html
    trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/index.html
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    trunk/Build/source/texk/web2c/luatexdir/tex/texnodes.c
    trunk/Build/source/texk/web2c/luatexdir/tex/textoken.c

Added Paths:
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    trunk/Build/source/texk/web2c/luatexdir/font/pdfglyphtounicode-luatex.c
    trunk/Build/source/texk/web2c/luatexdir/font/pdfglyphtounicode-pdftex.c
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    trunk/Build/source/texk/web2c/luatexdir/luapplib/README.md
    trunk/Build/source/texk/web2c/luatexdir/luapplib/azure-pipelines.yml
    trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/
    trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/Makefile
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    trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/environment.pickle
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    trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/
    trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/.buildinfo
    trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/
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    trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppnew.rst.txt
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    trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/pplib.rst
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    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/ppxref.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/ppxref.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/README.md
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilbasexx.c
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    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilcrypt.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilcrypt.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilcryptdef.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utildecl.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilflate.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilflate.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilfpred.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilfpred.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utiliof.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utiliof.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utillog.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utillog.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utillzw.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utillzw.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmd5.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmd5.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmem.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmem.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmemallc.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmemallh.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmemheap.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmemheap.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmemheapiof.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmemheapiof.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmeminfo.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilmeminfo.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilnumber.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilnumber.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilplat.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilsha.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/src/util/utilsha.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/zlib/

Removed Paths:
-------------
    trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/README-win.md
    trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/custom_callbacks.lua.html
    trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/harfbuzz_setup.lua.html
    trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/ot_font_loader.lua.html
    trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/package_path_searcher.lua.html
    trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/luaharfbuzz-1.0.0-1.rockspec
    trunk/Build/source/texk/web2c/luatexdir/luapplib/Makefile.orig
    trunk/Build/source/texk/web2c/luatexdir/luapplib/html/
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppapi.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/pparray.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/pparray.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppconf.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppcrypt.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppcrypt.c.orig
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppcrypt.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppdict.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppdict.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppfilter.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppheap.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppheap.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/pplib.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppload.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppload.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppstream.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppstream.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/pptest1.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/pptest2.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/pptest3.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppxref.c
    trunk/Build/source/texk/web2c/luatexdir/luapplib/ppxref.h
    trunk/Build/source/texk/web2c/luatexdir/luapplib/util/

Modified: trunk/Build/source/texk/web2c/luatexdir/ChangeLog
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/ChangeLog	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/ChangeLog	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,3 +1,42 @@
+2020-02-12  Luigi Scarso <luigi.scarso at gmail.com>
+    * restore state for \input delimited with {}
+
+
+2020-02-11  Luigi Scarso <luigi.scarso at gmail.com>
+    * patches for -fno-common (thanks to D. Seifert of Gentoo team)
+
+
+2020-01-25  Luigi Scarso <luigi.scarso at gmail.com>
+    * sync with upstream pplib 
+    * sync with upstream luaharfbuzz 
+
+
+2020-01-11  Luigi Scarso <luigi.scarso at gmail.com>
+    * shape fix (HH)
+
+2020-01-03  Luigi Scarso <luigi.scarso at gmail.com>
+    * luatex 1.12.0: updated to pplib 2.0
+
+2020-01-02  Luigi Scarso <luigi.scarso at gmail.com>
+    * better separation between luatex and luahbtex at build time
+
+
+2019-12-31  Luigi Scarso <luigi.scarso at gmail.com>
+    * scaled virtual font (HH)
+
+
+2019-12-19  Luigi Scarso <luigi.scarso at gmail.com>
+    * fixed inclusion of pdf files with a invalid pageDict (exit, don't load it)
+
+
+2019-12-11  Luigi Scarso <luigi.scarso at gmail.com>
+    * add catcode table check to set_macro (HH)
+
+
+2019-12-05  Luigi Scarso <luigi.scarso at gmail.com>
+    * two fixes for lua user nodes (error report of Sigitas Tolusis <sigitas at vtex.lt> )
+
+
 2019-11-08  Luigi Scarso <luigi.scarso at gmail.com>
     * record a few more files (in kpse enabled mode) (HH)
     * better recorder code in wrapped lua

Modified: trunk/Build/source/texk/web2c/luatexdir/am/libluatex.am
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/am/libluatex.am	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/am/libluatex.am	2020-02-15 12:45:08 UTC (rev 53789)
@@ -17,18 +17,14 @@
 ##
 EXTRA_LIBRARIES += libluatex.a libluajittex.a libluatexspecific.a  libluajittexspecific.a libluahbtexspecific.a libluajithbtexspecific.a 
 
+libluatex_a_DEPENDENCIES = libff.a libluamisc.a 
+libluajittex_a_DEPENDENCIES = libff.a libluajitmisc.a 
 
-## it's not true that  luatex depends on libluaharfbuzz.a
-## but for the  moment we keep it
-## 
-libluatex_a_DEPENDENCIES = libff.a libluamisc.a libluaharfbuzz.a
-libluajittex_a_DEPENDENCIES = libff.a libluajitmisc.a libluajitharfbuzz.a
-
 libluatex_a_preflags = $(AM_CPPFLAGS) $(ZLIB_INCLUDES) $(LIBPNG_INCLUDES) $(HARFBUZZ_INCLUDES)
 libluatex_a_preflags += -I$(srcdir)/libmd5
 libluatex_a_preflags += -DpdfTeX -I$(srcdir)/luatexdir
 libluatex_a_preflags += -I$(srcdir)/luatexdir/unilib
-libluatex_a_preflags += -I$(srcdir)/luatexdir/luapplib/util
+libluatex_a_preflags += -I$(srcdir)/luatexdir/luapplib/src/util
 libluatex_a_preflags += -I$(srcdir)/luatexdir/luafontloader/fontforge/inc
 libluatex_a_preflags += -DLUA_FF_LIB=1 -I$(srcdir)/luatexdir/luafontloader/fontforge/fontforge
 libluatex_a_preflags += -DSYNCTEX_ENGINE_H='<synctex-luatex.h>' -I$(srcdir)/synctexdir

Modified: trunk/Build/source/texk/web2c/luatexdir/am/luapplib.am
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/am/luapplib.am	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/am/luapplib.am	2020-02-15 12:45:08 UTC (rev 53789)
@@ -18,13 +18,13 @@
 
 
 libluapplib_a_CPPFLAGS = \
-	-I$(top_srcdir)/luatexdir/luapplib -I$(top_srcdir)/luatexdir/luapplib/util $(ZLIB_INCLUDES) $(LUA_INCLUDES)
+	-I$(top_srcdir)/luatexdir/luapplib -I$(top_srcdir)/luatexdir/luapplib/src -I$(top_srcdir)/luatexdir/luapplib/src/util $(ZLIB_INCLUDES) $(LUA_INCLUDES)
 
 #liblua53pplib_a_CPPFLAGS = \
-#	-I$(top_srcdir)/luatexdir/luapplib -I$(top_srcdir)/luatexdir/luapplib/util $(ZLIB_INCLUDES) $(LUA_LUA53_INCLUDES)
+#	-I$(top_srcdir)/luatexdir/luapplib -I$(top_srcdir)/luatexdir/luapplib/src -I$(top_srcdir)/luatexdir/luapplib/src/util $(ZLIB_INCLUDES) $(LUA_LUA53_INCLUDES)
 
 libluajitpplib_a_CPPFLAGS = \
-	-I$(top_srcdir)/luatexdir/luapplib -I$(top_srcdir)/luatexdir/luapplib/util $(ZLIB_INCLUDES) $(LUAJIT_INCLUDES)
+	-I$(top_srcdir)/luatexdir/luapplib -I$(top_srcdir)/luatexdir/luapplib/src -I$(top_srcdir)/luatexdir/luapplib/src/util $(ZLIB_INCLUDES) $(LUAJIT_INCLUDES)
 
 libluapplib_a_CFLAGS = # $(WARNING_CFLAGS)
 libluajitpplib_a_CFLAGS = # $(WARNING_CFLAGS)
@@ -34,53 +34,60 @@
 nodist_libluajitpplib_a_SOURCES = $(libluapplib_sources)
 
 libluapplib_sources = \
-	luatexdir/luapplib/ppapi.h \
-	luatexdir/luapplib/pparray.c \
-	luatexdir/luapplib/pparray.h \
-	luatexdir/luapplib/ppconf.h \
-	luatexdir/luapplib/ppcrypt.c \
-	luatexdir/luapplib/ppcrypt.h \
-	luatexdir/luapplib/ppdict.c \
-	luatexdir/luapplib/ppdict.h \
-	luatexdir/luapplib/ppfilter.h \
-	luatexdir/luapplib/ppheap.c \
-	luatexdir/luapplib/ppheap.h \
-	luatexdir/luapplib/pplib.h \
-	luatexdir/luapplib/ppload.c \
-	luatexdir/luapplib/ppload.h \
-	luatexdir/luapplib/ppstream.c \
-	luatexdir/luapplib/ppstream.h \
-	luatexdir/luapplib/pptest1.c \
-	luatexdir/luapplib/pptest2.c \
-	luatexdir/luapplib/pptest3.c \
-	luatexdir/luapplib/ppxref.c \
-	luatexdir/luapplib/ppxref.h \
-	luatexdir/luapplib/util/utilarm.h \
-	luatexdir/luapplib/util/utilbasexx.c \
-	luatexdir/luapplib/util/utilbasexx.h \
-	luatexdir/luapplib/util/utilcrypt.c \
-	luatexdir/luapplib/util/utilcrypt.h \
-	luatexdir/luapplib/util/utilcryptdef.h \
-	luatexdir/luapplib/util/utildecl.h \
-	luatexdir/luapplib/util/utilflate.c \
-	luatexdir/luapplib/util/utilflate.h \
-	luatexdir/luapplib/util/utilfpred.c \
-	luatexdir/luapplib/util/utilfpred.h \
-	luatexdir/luapplib/util/utiliof.c \
-	luatexdir/luapplib/util/utiliof.h \
-	luatexdir/luapplib/util/utillog.c \
-	luatexdir/luapplib/util/utillog.h \
-	luatexdir/luapplib/util/utillzw.c \
-	luatexdir/luapplib/util/utillzw.h \
-	luatexdir/luapplib/util/utilmd5.c \
-	luatexdir/luapplib/util/utilmd5.h \
-	luatexdir/luapplib/util/utilmem.c \
-	luatexdir/luapplib/util/utilmem.h \
-	luatexdir/luapplib/util/utilnumber.c \
-	luatexdir/luapplib/util/utilnumber.h \
-	luatexdir/luapplib/util/utilplat.h \
-	luatexdir/luapplib/util/utilsha.c \
-	luatexdir/luapplib/util/utilsha.h
+	luatexdir/luapplib/src/ppapi.h \
+	luatexdir/luapplib/src/pparray.c \
+	luatexdir/luapplib/src/pparray.h \
+	luatexdir/luapplib/src/ppconf.h \
+	luatexdir/luapplib/src/ppcrypt.c \
+	luatexdir/luapplib/src/ppcrypt.h \
+	luatexdir/luapplib/src/ppdict.c \
+	luatexdir/luapplib/src/ppdict.h \
+	luatexdir/luapplib/src/ppfilter.h \
+	luatexdir/luapplib/src/ppheap.c \
+	luatexdir/luapplib/src/ppheap.h \
+	luatexdir/luapplib/src/pplib.h \
+	luatexdir/luapplib/src/ppload.c \
+	luatexdir/luapplib/src/ppload.h \
+	luatexdir/luapplib/src/ppstream.c \
+	luatexdir/luapplib/src/ppstream.h \
+	luatexdir/luapplib/src/pptest1.c \
+	luatexdir/luapplib/src/pptest2.c \
+	luatexdir/luapplib/src/pptest3.c \
+	luatexdir/luapplib/src/ppxref.c \
+	luatexdir/luapplib/src/ppxref.h \
+	luatexdir/luapplib/src/util/utilbasexx.c \
+	luatexdir/luapplib/src/util/utilbasexx.h \
+	luatexdir/luapplib/src/util/utilcrypt.c \
+	luatexdir/luapplib/src/util/utilcrypt.h \
+	luatexdir/luapplib/src/util/utilcryptdef.h \
+	luatexdir/luapplib/src/util/utildecl.h \
+	luatexdir/luapplib/src/util/utilflate.c \
+	luatexdir/luapplib/src/util/utilflate.h \
+	luatexdir/luapplib/src/util/utilfpred.c \
+	luatexdir/luapplib/src/util/utilfpred.h \
+	luatexdir/luapplib/src/util/utiliof.c \
+	luatexdir/luapplib/src/util/utiliof.h \
+	luatexdir/luapplib/src/util/utillog.c \
+	luatexdir/luapplib/src/util/utillog.h \
+	luatexdir/luapplib/src/util/utillzw.c \
+	luatexdir/luapplib/src/util/utillzw.h \
+	luatexdir/luapplib/src/util/utilmd5.c \
+	luatexdir/luapplib/src/util/utilmd5.h \
+	luatexdir/luapplib/src/util/utilmem.c \
+	luatexdir/luapplib/src/util/utilmem.h \
+	luatexdir/luapplib/src/util/utilmemallc.h \
+	luatexdir/luapplib/src/util/utilmemallh.h \
+	luatexdir/luapplib/src/util/utilmemheap.c \
+	luatexdir/luapplib/src/util/utilmemheap.h \
+	luatexdir/luapplib/src/util/utilmemheapiof.c \
+	luatexdir/luapplib/src/util/utilmemheapiof.h \
+	luatexdir/luapplib/src/util/utilmeminfo.c \
+	luatexdir/luapplib/src/util/utilmeminfo.h \
+	luatexdir/luapplib/src/util/utilnumber.c \
+	luatexdir/luapplib/src/util/utilnumber.h \
+	luatexdir/luapplib/src/util/utilplat.h \
+	luatexdir/luapplib/src/util/utilsha.c \
+	luatexdir/luapplib/src/util/utilsha.h 
 
 
 #liblua53pplib_sources = $(libluapplib_sources)

Modified: trunk/Build/source/texk/web2c/luatexdir/am/luatex.am
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/am/luatex.am	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/am/luatex.am	2020-02-15 12:45:08 UTC (rev 53789)
@@ -113,8 +113,8 @@
 luajittex_DEPENDENCIES = $(luatex_depend) libluajittex.a libluajittexspecific.a
 
 luahbtex_depend = $(proglib) $(KPATHSEA_DEPEND) $(LIBPNG_DEPEND) libmputil.a libmd5.a
-luahbtex_DEPENDENCIES = $(luahbtex_depend) libluatex.a libluahbtexspecific.a
-luajithbtex_DEPENDENCIES = $(luatex_depend) libluajittex.a libluajithbtexspecific.a
+luahbtex_DEPENDENCIES = $(luahbtex_depend) libluatex.a libluahbtexspecific.a libluaharfbuzz.a
+luajithbtex_DEPENDENCIES = $(luatex_depend) libluajittex.a libluajithbtexspecific.a libluajitharfbuzz.a
 
 
 

Modified: trunk/Build/source/texk/web2c/luatexdir/font/luafont.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/font/luafont.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/font/luafont.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -169,6 +169,207 @@
     }
 }
 
+#define set_packet_number(fw) { \
+    fw = *(vfp++);              \
+    fw = fw * 256 + *(vfp++);   \
+    fw = fw * 256 + *(vfp++);   \
+    fw = fw * 256 + *(vfp++);   \
+}
+
+#define set_packet_scaled(fw) { \
+    fw = *(vfp++);              \
+    if (fw > 127) {             \
+        fw = fw - 256;          \
+    }                           \
+    fw = fw * 256 + *(vfp++);   \
+    fw = fw * 256 + *(vfp++);   \
+    fw = fw * 256 + *(vfp++);   \
+}
+
+static void font_commands_to_lua(lua_State * L, internal_font_number f, charinfo * co)
+{
+    eight_bits *vfp = get_charinfo_packets(co);
+    if (vfp != NULL) {
+        int cmd;
+        int i = 1;
+        lua_push_string_by_name(L,commands);
+        lua_newtable(L);
+        while ((cmd = *(vfp++)) != packet_end_code) {
+            switch (cmd) {
+                case packet_font_code:
+                    {
+                        halfword f ;
+                        set_packet_number(f);
+                        lua_createtable(L, 2, 0);
+                        lua_push_string_by_name(L,font);
+                        lua_rawseti(L, -2, 1);
+                        lua_pushinteger(L, f);
+                        lua_rawseti(L, -2, 2);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_push_code:
+                    {
+                        lua_createtable(L, 1, 0);
+                        lua_push_string_by_name(L,push);
+                        lua_rawseti(L, -2, 1);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_pop_code:
+                    {
+                        lua_createtable(L, 1, 0);
+                        lua_push_string_by_name(L,pop);
+                        lua_rawseti(L, -2, 1);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_char_code:
+                    {
+                        halfword c ;
+                        set_packet_number(c);
+                        lua_createtable(L, 2, 0);
+                        lua_push_string_by_name(L,char);
+                        lua_rawseti(L, -2, 1);
+                        lua_pushinteger(L, c);
+                        lua_rawseti(L, -2, 2);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_rule_code:
+                    {
+                        halfword h, w ;
+                        set_packet_scaled(h);
+                        set_packet_scaled(w);
+                        lua_createtable(L, 3, 0);
+                        lua_push_string_by_name(L,rule);
+                        lua_rawseti(L, -2, 1);
+                        lua_pushinteger(L, h);
+                        lua_rawseti(L, -2, 2);
+                        lua_pushinteger(L, w);
+                        lua_rawseti(L, -2, 3);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_right_code:
+                    {
+                        halfword r ;
+                        set_packet_scaled(r);
+                        lua_createtable(L, 1, 0);
+                        lua_push_string_by_name(L,right);
+                        lua_rawseti(L, -2, 1);
+                        lua_pushinteger(L, r);
+                        lua_rawseti(L, -2, 2);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_down_code:
+                    {
+                        halfword d ;
+                        set_packet_scaled(d);
+                        lua_createtable(L, 1, 0);
+                        lua_push_string_by_name(L,down);
+                        lua_rawseti(L, -2, 1);
+                        lua_pushinteger(L, d);
+                        lua_rawseti(L, -2, 2);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_pdf_code:
+                    {
+                        halfword m, l;
+                        set_packet_number(m);
+                        set_packet_number(l);
+                        lua_createtable(L, 3, 0);
+                        lua_push_string_by_name(L,pdf);
+                        lua_rawseti(L, -2, 1);
+                        lua_pushinteger(L, m);
+                        lua_rawseti(L, -2, 2);
+                        lua_pushstring(L,"<pdf data>");
+                        lua_rawseti(L, -2, 3);
+                        lua_rawseti(L, -2, i++);
+                        vfp += l;
+                    }
+                    break;
+                case packet_pdf_mode:
+                    {
+                        halfword m;
+                        set_packet_number(m);
+                        lua_createtable(L, 2, 0);
+                        lua_push_string_by_name(L,mode);
+                        lua_rawseti(L, -2, 1);
+                        lua_pushinteger(L, m);
+                        lua_rawseti(L, -2, 2);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_special_code:
+                    {
+                        halfword l;
+                        set_packet_number(l);
+                        lua_createtable(L, 2, 0);
+                        lua_push_string_by_name(L,special);
+                        lua_rawseti(L, -2, 1);
+                        lua_pushstring(L,"<special data>");
+                        lua_rawseti(L, -2, 2);
+                        lua_rawseti(L, -2, i++);
+                        vfp += l;
+                    }
+                    break;
+                case packet_lua_code:
+                    {
+                        halfword n;
+                        set_packet_number(n);
+                        lua_createtable(L, 2, 0);
+                        lua_push_string_by_name(L,lua);
+                        lua_rawseti(L, -2, 1);
+                        lua_pushstring(L,"<lua data>");
+                        lua_rawseti(L, -2, 2);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_image_code:
+                    {
+                        halfword n;
+                        set_packet_number(n);
+                        lua_createtable(L, 2, 0);
+                        lua_push_string_by_name(L,image);
+                        lua_rawseti(L, -2, 1);
+                        lua_pushstring(L,"<image data>");
+                        lua_rawseti(L, -2, 2);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_node_code:
+                    {
+                        halfword n;
+                        set_packet_number(n);
+                        lua_createtable(L, 2, 0);
+                        lua_push_string_by_name(L,node);
+                        lua_rawseti(L, -2, 1);
+                        lua_pushstring(L,"<node data>");
+                        lua_rawseti(L, -2, 2);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_nop_code:
+                    {
+                        lua_createtable(L, 1, 0);
+                        lua_push_string_by_name(L,nop);
+                        lua_rawseti(L, -2, 1);
+                        lua_rawseti(L, -2, i++);
+                    }
+                    break;
+                case packet_scale_code:
+                    break;
+                default:
+                    break;
+            }
+        }
+        lua_rawset(L, -3);
+    }
+}
+
 static void font_char_to_lua(lua_State * L, internal_font_number f, charinfo * co)
 {
     liginfo *l;
@@ -343,6 +544,7 @@
         else
             lua_pop(L, 2);
     }
+    font_commands_to_lua(L,f,co);
 }
 
 static void write_lua_parameters(lua_State * L, int f)
@@ -432,11 +634,11 @@
     lua_rawset(L, -3);
 }
 
-int font_to_lua(lua_State * L, int f)
+int font_to_lua(lua_State * L, int f, int usecache)
 {
     int k;
     charinfo *co;
-    if (font_cache_id(f) > 0) {
+    if (usecache && font_cache_id(f) > 0) {
         /*tex Fetch the table from the registry if it was saved there by |font_from_lua|. */
         lua_rawgeti(L, LUA_REGISTRYINDEX, font_cache_id(f));
         return 1;
@@ -523,13 +725,6 @@
         }
     }
     lua_rawset(L, -3);
-    if (font_cache_id(f) == 0) {
-        /*tex Renew the cache. */
-        int r;
-        lua_pushvalue(L, -1);
-        r = luaL_ref(L, LUA_REGISTRYINDEX);
-        set_font_cache_id(f, r);
-    }
     return 1;
 }
 

Modified: trunk/Build/source/texk/web2c/luatexdir/font/luatexfont.h
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/font/luatexfont.h	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/font/luatexfont.h	2020-02-15 12:45:08 UTC (rev 53789)
@@ -128,8 +128,8 @@
 void replace_packet_fonts(internal_font_number f, int *old_fontid, int *new_fontid, int count);
 int *packet_local_fonts(internal_font_number f, int *num);
 
-int packet_cur_s;               /* current |do_vf_packet()| recursion level */
-int packet_stack_ptr;           /* pointer into |packet_stack| */
+extern int packet_cur_s;               /* current |do_vf_packet()| recursion level */
+extern int packet_stack_ptr;           /* pointer into |packet_stack| */
 vf_struct *new_vfstruct(void);
 
 /* writecff.c */

Added: trunk/Build/source/texk/web2c/luatexdir/font/pdfglyphtounicode-luatex.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/font/pdfglyphtounicode-luatex.c	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/font/pdfglyphtounicode-luatex.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,106 @@
+static void set_glyph_unicode(char *s, glyph_unicode_entry * gp)
+{
+    char buf[SMALL_BUF_SIZE], buf2[SMALL_BUF_SIZE], *p;
+    long code;
+    boolean last_component;
+    glyph_unicode_entry tmp, *ptmp;
+    /*tex Skip dummy entries. */
+    if (s == NULL || s == notdef)
+        return;
+    /*tex Strip everything after the first dot. */
+    p = strchr(s, '.');
+    if (p != NULL) {
+        *buf = 0;
+        strncat(buf, s, (size_t) (p - s));
+        s = buf;
+    }
+    if (strlen(s) == 0)
+        return;
+    /*tex Check for case of multiple components separated by |_|. */
+    p = strchr(s, '_');
+    if (p != NULL) {
+        assert(strlen(s) < sizeof(buf));
+        if (s != buf) {
+            strcpy(buf, s);
+            p = strchr(buf, '_');
+            s = buf;
+        }
+        *buf2 = 0;
+        last_component = false;
+        for (;;) {
+            *p = 0;
+            tmp.code = UNI_UNDEF;
+            set_glyph_unicode(s, &tmp);
+            switch (tmp.code) {
+            case UNI_UNDEF:
+                /*tex Not found, do nothing. */
+                break;
+            case UNI_STRING:
+                /*tex |s| matched an entry with string value in the database. */
+                assert(tmp.unicode_seq != NULL);
+                assert(strlen(buf2) + strlen(tmp.unicode_seq) < sizeof(buf2));
+                strcat(buf2, tmp.unicode_seq);
+                break;
+            case UNI_EXTRA_STRING:
+                /*tex |s| is a multiple value of form "uniXXXX" */
+                assert(strlen(buf2) + strlen(tmp.unicode_seq) < sizeof(buf2));
+                strcat(buf2, tmp.unicode_seq);
+                xfree(tmp.unicode_seq);
+                break;
+            default:
+                /*tex
+                    |s| matched an entry with numeric value in the database, or a
+                    value derived from |uXXXX|.
+                */
+                assert(tmp.code >= 0);
+                strcat(buf2, utf16be_str(tmp.code));
+            }
+            if (last_component)
+                break;
+            s = p + 1;
+            p = strchr(s, '_');
+            if (p == NULL) {
+                p = strend(s);
+                last_component = true;
+            }
+        }
+        gp->code = UNI_EXTRA_STRING;
+        gp->unicode_seq = xstrdup(buf2);
+        return;
+    }
+    /*tex Lookup glyph name in the database. */
+    tmp.name = s;
+    tmp.code = UNI_UNDEF;
+    ptmp = (glyph_unicode_entry *) avl_find(glyph_unicode_tree, &tmp);
+    if (ptmp != NULL) {
+        gp->code = ptmp->code;
+        gp->unicode_seq = ptmp->unicode_seq;
+        return;
+    }
+    /*tex Check for case of |uniXXXX|, multiple 4-hex-digit values allowed. */
+    if (str_prefix(s, "uni")) {
+        p = s + strlen("uni");
+        code = check_unicode_value(p, true);
+        if (code != UNI_UNDEF) {
+            if (strlen(p) == 4) {
+                /*tex Single value: */
+                gp->code = code;
+            } else {
+                /*tex Multiple value: */
+                gp->code = UNI_EXTRA_STRING;
+                gp->unicode_seq = xstrdup(p);
+            }
+        }
+        /*tex Since the last case cannot happen: */
+        return;
+    }
+    /*tex Check for case of |uXXXX|, a single value up to 6 hex digits. */
+    if (str_prefix(s, "u")) {
+        p = s + strlen("u");
+        code = check_unicode_value(p, false);
+        if (code != UNI_UNDEF) {
+            assert(code >= 0);
+            gp->code = code;
+        }
+    }
+}

Added: trunk/Build/source/texk/web2c/luatexdir/font/pdfglyphtounicode-pdftex.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/font/pdfglyphtounicode-pdftex.c	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/font/pdfglyphtounicode-pdftex.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,126 @@
+static void set_glyph_unicode(const char *s, const char* tfmname,
+                              glyph_unicode_entry *gp)
+{
+    char buf[SMALL_BUF_SIZE], buf2[SMALL_BUF_SIZE], *p;
+    const char *p2; /* p2 points in s; p above points in writable copies */
+    long code;
+    boolean last_component;
+    glyph_unicode_entry tmp, *ptmp;
+    /*tex Skip dummy entries. */
+    if (s == NULL || s == notdef)
+        return;
+    /*tex Strip everything after the first dot. */
+    p = strchr(s, '.');
+    if (p != NULL) {
+        *buf = 0;
+        strncat(buf, s, p - s);
+        s = buf;
+    }
+    if (strlen(s) == 0)
+        return;
+    /*tex Check for case of multiple components separated by |_|. */
+    p = strchr(s, '_');
+    if (p != NULL) {
+        assert(strlen(s) < sizeof(buf));
+        if (s != buf) {
+            strcpy(buf, s);
+            p = strchr(buf, '_');
+            s = buf;
+        }
+        *buf2 = 0;
+        last_component = false;
+        for (;;) {
+            *p = 0;
+            tmp.code = UNI_UNDEF;
+            set_glyph_unicode(s, tfmname, &tmp);
+            switch (tmp.code) {
+            case UNI_UNDEF:
+                /*tex Not found, do nothing. */
+                break;
+            case UNI_STRING:
+                /*tex |s| matched an entry with string value in the database. */
+                assert(tmp.unicode_seq != NULL);
+                assert(strlen(buf2) + strlen(tmp.unicode_seq) < sizeof(buf2));
+                strcat(buf2, tmp.unicode_seq);
+                break;
+            case UNI_EXTRA_STRING:
+                /*tex |s| is a multiple value of form "uniXXXX" */
+                assert(strlen(buf2) + strlen(tmp.unicode_seq) < sizeof(buf2));
+                strcat(buf2, tmp.unicode_seq);
+                xfree(tmp.unicode_seq);
+                break;
+            default:
+                /*tex
+                    |s| matched an entry with numeric value in the database, or a
+                    value derived from |uXXXX|.
+                */
+                assert(tmp.code >= 0);
+                strcat(buf2, utf16be_str(tmp.code));
+            }
+            if (last_component)
+                break;
+            s = p + 1;
+            p = strchr(s, '_');
+            if (p == NULL) {
+                p = strend(s);
+                last_component = true;
+            }
+        }
+        gp->code = UNI_EXTRA_STRING;
+        gp->unicode_seq = xstrdup(buf2);
+        return;
+    }
+
+    /* Glyph name search strategy: first look up the glyph name in the
+       tfm's namespace, failing that look it up in the main database. */
+    /* Note: buf may alias s in the code below, but s and buf2 are
+       guaranteed to be distinct because the code changing buf2 above
+       always returns before reaching the code below. */
+
+    /* lookup for glyph name in the tfm's namespace */
+    snprintf(buf2, SMALL_BUF_SIZE, "tfm:%s/%s", tfmname, s);
+    tmp.name = buf2;
+    tmp.code = UNI_UNDEF;
+    ptmp = (glyph_unicode_entry *) avl_find(glyph_unicode_tree, &tmp);
+    if (ptmp != NULL) {
+        gp->code = ptmp->code;
+        gp->unicode_seq = ptmp->unicode_seq;
+        return;
+    }
+
+    /* lookup for glyph name in the main database */
+    snprintf(buf2, SMALL_BUF_SIZE, "%s", s);
+    tmp.name = buf2;
+    tmp.code = UNI_UNDEF;
+    ptmp = (glyph_unicode_entry *) avl_find(glyph_unicode_tree, &tmp);
+    if (ptmp != NULL) {
+        gp->code = ptmp->code;
+        gp->unicode_seq = ptmp->unicode_seq;
+        return;
+    }
+
+    /*tex Check for case of |uniXXXX|, multiple 4-hex-digit values allowed. */
+    if (str_prefix(s, "uni")) {
+        p2 = s + strlen("uni");
+        code = check_unicode_value(p2, true);
+        if (code != UNI_UNDEF) {
+            if (strlen(p2) == 4) /* single value */
+                gp->code = code;
+            else {              /* multiple value */
+                gp->code = UNI_EXTRA_STRING;
+                gp->unicode_seq = xstrdup(p2);
+            }
+        }
+        /*tex Since the last case cannot happen: */
+        return;
+    }
+    /*tex Check for case of |uXXXX|, a single value up to 6 hex digits. */
+    if (str_prefix(s, "u")) {
+        p2 = s + strlen("u");
+        code = check_unicode_value(p2, false);
+        if (code != UNI_UNDEF) {
+            assert(code >= 0);
+            gp->code = code;
+        }
+    }
+}

Added: trunk/Build/source/texk/web2c/luatexdir/font/pdfglyphtounicode-readme.txt
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/font/pdfglyphtounicode-readme.txt	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/font/pdfglyphtounicode-readme.txt	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,10 @@
+In pdftex there is are some more heuristics going on when determining the
+tounicode mapping:
+
+- more lookups using periods
+- a prefix tfm:cmr10/foo -> bar mapping
+
+Because in luatex one can have a callback that just loads the tfm and then
+decorates it with tounicodes we don't do this in luatex.
+
+HH

Modified: trunk/Build/source/texk/web2c/luatexdir/font/texfont.h
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/font/texfont.h	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/font/texfont.h	2020-02-15 12:45:08 UTC (rev 53789)
@@ -329,7 +329,6 @@
 #  define font_streamprovider(a)         font_tables[a]->_font_streamprovider
 #  define set_font_streamprovider(a,b)   font_streamprovider(a) = b
 
-
 #  define font_oldmath(a)                font_tables[a]->_font_oldmath
 #  define set_font_oldmath(a,b)          font_oldmath(a) = b
 

Modified: trunk/Build/source/texk/web2c/luatexdir/font/vfpacket.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/font/vfpacket.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/font/vfpacket.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -29,6 +29,9 @@
 
 */
 
+int packet_cur_s;
+int packet_stack_ptr;
+
 #define packet_number(fw) {    \
     fw = *(vfp++);             \
     fw = fw * 256 + *(vfp++);  \

Modified: trunk/Build/source/texk/web2c/luatexdir/image/epdf.h
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/image/epdf.h	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/image/epdf.h	2020-02-15 12:45:08 UTC (rev 53789)
@@ -70,8 +70,9 @@
 #  include "lua.h"
 #  include "lauxlib.h"
 
-# include "luapplib/pplib.h"
+# include "luapplib/src/pplib.h"
 
+
 /* pdfgen.w */
 
 extern int ten_pow[10];

Modified: trunk/Build/source/texk/web2c/luatexdir/image/pdftoepdf.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/image/pdftoepdf.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/image/pdftoepdf.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -187,6 +187,9 @@
             }
         }
         if (pdfe != NULL) {
+            if (ppdoc_crypt_status(pdfe) < 0 && userpassword==NULL) {
+                formatted_error("pdf inclusion","the pdf file '%s' is encrypted, passwords wrong",file_path);
+            }
             if (ppdoc_crypt_status(pdfe) < 0) {
                 ppdoc_crypt_pass(pdfe,userpassword,strlen(userpassword),NULL,0);
             }
@@ -250,7 +253,7 @@
         free(checksum);
     }
     if (pdf_doc->pdfe == NULL) {
-        pdfe = ppdoc_mem(docstream, streamsize);
+        pdfe = ppdoc_mem(docstream, (size_t) streamsize);
         pdf_doc->pc++;
         if (pdfe == NULL) {
             normal_error("pdf inclusion","reading pdf Stream failed");
@@ -367,24 +370,24 @@
 
 static void copyObject(PDF, PdfDocument *, ppobj *);
 
-static void copyString(PDF pdf, ppstring str)
+static void copyString(PDF pdf, ppstring *str)
 {
     pdf_check_space(pdf);
-    switch (ppstring_type((void *)(str))) {
+    switch (ppstring_type(str)) {
         case PPSTRING_PLAIN:
             pdf_out(pdf, '(');
-            pdf_out_block(pdf, (const char *) str, ppstring_size((void *)(str)));
+            pdf_out_block(pdf, ppstring_data(str), ppstring_size(str));
             pdf_out(pdf, ')');
             break;
         case PPSTRING_BASE16:
             pdf_out(pdf, '<');
-            pdf_out_block(pdf, (const char *) str, ppstring_size((void *)(str)));
+            pdf_out_block(pdf, ppstring_data(str), ppstring_size(str));
             pdf_out(pdf, '>');
             break;
         case PPSTRING_BASE85:
             pdf_out(pdf, '<');
             pdf_out(pdf, '~');
-            pdf_out_block(pdf, (const char *) str, ppstring_size((void *)(str)));
+            pdf_out_block(pdf, ppstring_data(str), ppstring_size(str));
             pdf_out(pdf, '~');
             pdf_out(pdf, '>');
             break;
@@ -392,12 +395,10 @@
     pdf_set_space(pdf);
 }
 
-/*
 static void copyName(PDF pdf, ppname *name)
 {
-    pdf_add_name(pdf, (const char *) name);
+    pdf_add_name(pdf, ppname_data(name));
 }
-*/
 
 static void copyArray(PDF pdf, PdfDocument * pdf_doc, pparray * array)
 {
@@ -416,7 +417,8 @@
     int n = dict->size;
     pdf_begin_dict(pdf);
     for (i=0; i<n; ++i) {
-        pdf_add_name(pdf, (const char *) ppdict_key(dict,i));
+        ppname *key = ppdict_key(dict,i);
+        pdf_add_name(pdf,ppname_data(key));
         copyObject(pdf, pdf_doc, ppdict_at(dict,i));
     }
     pdf_end_dict(pdf);
@@ -462,9 +464,8 @@
                 "FlateDecode", "LZWDecode", NULL
             };
             int k;
-            const char *val = ppobj_get_name(obj);
             for (k = 0; codecs[k] != NULL; k++) {
-                if (strcmp(val,codecs[k]) == 0) {
+                if (strcmp(ppname_data(obj->name),codecs[k]) == 0) {
                     known = 1;
                     break;
                 }
@@ -478,17 +479,17 @@
             int i;
             pdf_begin_dict(pdf);
             for (i=0; i<dict->size; ++i) {
-                const char *key = ppdict_key(dict,i);
+                ppname *key = ppdict_key(dict,i);
                 int copy = 1;
                 int k;
                 for (k = 0; ignoredkeys[k] != NULL; k++) {
-                    if (strcmp(key,ignoredkeys[k]) == 0) {
+                    if (strcmp(ppname_data(key),ignoredkeys[k]) == 0) {
                         copy = 0;
                         break;
                     }
                 }
                 if (copy) {
-                    pdf_add_name(pdf, key);
+                    pdf_add_name(pdf, ppname_data(key));
                     copyObject(pdf, pdf_doc, ppdict_at(dict,i));
                 }
             }
@@ -523,7 +524,7 @@
             pdf_add_real(pdf,obj->number);                      /* ppobj_get_num_value(obj) */
             break;
         case PPNAME:
-            pdf_add_name(pdf, (const char *) obj->name);        /* ppobj_get_name(obj) */
+            copyName(pdf, obj->name);
             break;
         case PPSTRING:
             copyString(pdf, obj->string);                       /* ppobj_get_string(obj) */
@@ -690,6 +691,9 @@
         get the required page
     */
     pageDict = get_pdf_page_dict(pdfe,img_pagenum(idict));
+    if (pageDict==NULL) {
+      formatted_error("pdf inclusion","unable to retrive dictionary for page '%i'",(int) img_pagenum(idict));
+    }
     /*
         get the pagebox coordinates (media, crop,...) to use
     */
@@ -802,6 +806,9 @@
     }
     pdfe = pdf_doc->pdfe;
     pageDict = get_pdf_page_dict(pdfe,img_pagenum(idict));
+    if (pageDict==NULL) {
+      formatted_error("pdf inclusion","unable to retrive dictionary for page '%i'",(int) img_pagenum(idict));
+    }
     /*
         write the Page header
     */

Modified: trunk/Build/source/texk/web2c/luatexdir/image/writeimg.h
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/image/writeimg.h	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/image/writeimg.h	2020-02-15 12:45:08 UTC (rev 53789)
@@ -26,7 +26,7 @@
 #  include "pdf/pdfpage.h"
 
 typedef image_dict *idict_entry;
-idict_entry *idict_array;
+extern idict_entry *idict_array;
 
 void new_img_pdfstream_struct(image_dict *);
 image *new_image(void);

Modified: trunk/Build/source/texk/web2c/luatexdir/lua/lcallbacklib.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/lua/lcallbacklib.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/lua/lcallbacklib.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -84,6 +84,7 @@
     "page_order_index",
     "make_extensible",
     "process_pdf_image_content",
+    "provide_charproc_data",
     NULL
 };
 
@@ -195,6 +196,7 @@
 
 #define CALLBACK_BOOLEAN        'b'
 #define CALLBACK_INTEGER        'd'
+#define CALLBACK_FLOAT          'f'
 #define CALLBACK_LINE           'l'
 #define CALLBACK_STRNUMBER      's'
 #define CALLBACK_STRING         'S'
@@ -302,6 +304,9 @@
             case CALLBACK_INTEGER: /* int */
                 lua_pushinteger(Luas, va_arg(vl, int));
                 break;
+            case CALLBACK_FLOAT: /* double */
+                lua_pushnumber(Luas, va_arg(vl, double));
+                break;
             case CALLBACK_STRNUMBER:       /* TeX string */
                 s = makeclstring(va_arg(vl, int), &len);
                 lua_pushlstring(Luas, s, len);
@@ -361,6 +366,7 @@
     nres = -nres;
     while (*values) {
         int b, t;
+        double d;
         halfword p;
         t = lua_type(Luas, nres);
         switch (*values++) {
@@ -383,6 +389,14 @@
                 b = lua_tointeger(Luas, nres);
                 *va_arg(vl, int *) = b;
                 break;
+            case CALLBACK_FLOAT:
+                if (t != LUA_TNUMBER) {
+                    fprintf(stderr, "callback should return a number, not: %s\n", lua_typename(Luas, t));
+                    goto EXIT;
+                }
+                d = lua_tonumber(Luas, nres);
+                *va_arg(vl, double *) = d;
+                break;
             case CALLBACK_LINE:    /* TeX line ... happens frequently when we have a plug-in */
                 if (t == LUA_TNIL) {
                     bufloc = 0;

Added: trunk/Build/source/texk/web2c/luatexdir/lua/lepdflib.cc.orig
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/lua/lepdflib.cc.orig	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/lua/lepdflib.cc.orig	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,2939 @@
+/* lepdflib.cc
+
+   Copyright 2009-2015 Taco Hoekwater <taco at luatex.org>
+   Copyright 2009-2013 Hartmut Henkel <hartmut at luatex.org>
+
+   This file is part of LuaTeX.
+
+   LuaTeX is free software; you can redistribute it and/or modify it under
+   the terms of the GNU General Public License as published by the Free
+   Software Foundation; either version 2 of the License, or (at your
+   option) any later version.
+
+   LuaTeX is distributed in the hope that it will be useful, but WITHOUT
+   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+   License for more details.
+
+   You should have received a copy of the GNU General Public License along
+   with LuaTeX; if not, see <http://www.gnu.org/licenses/>. */
+
+
+#include "image/epdf.h"
+
+/*
+    Patches for the new poppler 0.59 from:
+
+    https://www.mail-archive.com/arch-commits@archlinux.org/msg357548.html
+
+    with some modifications to comply the poppler API.
+*/
+
+/* define DEBUG */
+
+/* objects allocated by poppler may not be deleted in the lepdflib */
+
+typedef enum { ALLOC_POPPLER, ALLOC_LEPDF } alloctype;
+
+typedef struct {
+    void *d;
+    alloctype atype;   // was it allocated by poppler or the lepdflib.cc?
+    PdfDocument *pd;   // reference to PdfDocument, or NULL
+    unsigned long pc;  // counter to detect PDFDoc change
+} udstruct;
+
+static const char *ErrorCodeNames[] = {
+    "None", "OpenFile", "BadCatalog",
+    "Damaged", "Encrypted", "HighlightFile", "BadPrinter", "Printing",
+    "Permission", "BadPageNum", "FileIO",
+    NULL
+};
+
+#define M_Annot            "epdf.Annot" /* ls-hh: epdf.* gives better protection in registry */
+#define M_Annots           "epdf.Annots"
+#define M_Array            "epdf.Array"
+#define M_Catalog          "epdf.Catalog"
+#define M_Dict             "epdf.Dict"
+#define M_EmbFile          "epdf.EmbFile"
+#define M_FileSpec         "epdf.FileSpec"
+#define M_GooString        "epdf.GooString"
+#define M_LinkDest         "epdf.LinkDest"
+#define M_Link             "epdf.Link"
+#define M_Links            "epdf.Links"
+#define M_Object           "epdf.Object"
+#define M_Page             "epdf.Page"
+#define M_PDFDoc           "epdf.PDFDoc"
+#define M_PDFRectangle     "epdf.PDFRectangle"
+#define M_Ref              "epdf.Ref"
+#define M_Stream           "epdf.Stream"
+#define M_StructElement    "epdf.StructElement"
+#define M_Attribute        "epdf.Attribute"
+#define M_TextSpan         "epdf.TextSpan"
+#define M_StructTreeRoot   "epdf.StructTreeRoot"
+#define M_XRefEntry        "epdf.XRefEntry"
+#define M_XRef             "epdf.XRef"
+
+#define new_poppler_userdata(type)                                              \
+static udstruct *new_##type##_userdata(lua_State * L)                           \
+{                                                                               \
+    udstruct *a;                                                                \
+    a = (udstruct *) lua_newuserdata(L, sizeof(udstruct));  /* udstruct ... */  \
+    a->atype = ALLOC_POPPLER;                                                   \
+    luaL_getmetatable(L, M_##type);     /* m udstruct ... */                    \
+    lua_setmetatable(L, -2);    /* udstruct ... */                              \
+    return a;                                                                   \
+}
+
+new_poppler_userdata(PDFDoc);
+new_poppler_userdata(Annot);
+new_poppler_userdata(Array);
+new_poppler_userdata(Catalog);
+new_poppler_userdata(Dict);
+new_poppler_userdata(EmbFile);
+new_poppler_userdata(FileSpec);
+new_poppler_userdata(LinkDest);
+new_poppler_userdata(Links);
+new_poppler_userdata(Object);
+new_poppler_userdata(Page);
+new_poppler_userdata(PDFRectangle);
+new_poppler_userdata(Ref);
+new_poppler_userdata(Stream);
+new_poppler_userdata(StructElement);
+new_poppler_userdata(Attribute);
+new_poppler_userdata(TextSpan);
+new_poppler_userdata(StructTreeRoot);
+new_poppler_userdata(XRef);
+
+/* These two can go away as we don't change the document. */
+
+static void pdfdoc_changed_error(lua_State * L)
+{
+    luaL_error(L, "PDFDoc changed or gone");
+}
+
+static void pdfdoc_differs_error(lua_State * L)
+{
+    luaL_error(L, "PDFDoc differs between arguments");
+}
+
+static int l_open_PDFDoc(lua_State * L)
+{
+    const char *file_path;
+    udstruct *uout;
+    PdfDocument *d;
+    file_path = luaL_checkstring(L, 1); // path
+    d = refPdfDocument(file_path, FE_RETURN_NULL);
+    if (d == NULL)
+        lua_pushnil(L);
+    else {
+        if (!(globalParams)) // globalParams could be already created
+            globalParams = new GlobalParams();
+        uout = new_PDFDoc_userdata(L);
+        uout->d = d;
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = d->pc;
+        uout->pd = d;
+    }
+    return 1;
+}
+
+static int l_open_MemStreamPDFDoc(lua_State * L)
+{
+    const char *docstream = NULL;
+    char *docstream_usr = NULL ;
+    const char *file_id;
+    unsigned long long stream_size;
+    udstruct *uout;
+    PdfDocument *d;
+    switch (lua_type(L, 1)) {
+        case LUA_TSTRING:
+            docstream = luaL_checkstring(L, 1); // stream as Lua string
+            break;
+        case LUA_TLIGHTUSERDATA:
+            docstream = (const char *) lua_touserdata(L, 1); // stream as sequence of bytes
+            break;
+        default:
+            luaL_error(L, "bad argument: string or lightuserdata expected");
+    }
+    if (docstream==NULL)
+        luaL_error(L, "bad document");
+    stream_size = (unsigned long long) luaL_checkint(L, 2);// size of the stream
+    file_id  =  luaL_checkstring(L, 3); // a symbolic name for this stream, mandatory
+    if (file_id == NULL)
+        luaL_error(L, "PDFDoc has an invalid id");
+    if (strlen(file_id) >STREAM_FILE_ID_LEN )  // a limit to the length of the string
+        luaL_error(L, "PDFDoc has a too long id");
+    docstream_usr = (char *)gmalloc((unsigned) (stream_size + 1));
+    if (!docstream_usr)
+        luaL_error(L, "no room for PDFDoc");
+    memcpy(docstream_usr, docstream, (stream_size + 1));
+    docstream_usr[stream_size]='\0';
+    d = refMemStreamPdfDocument(docstream_usr, stream_size, file_id);
+    if (d == NULL) {
+        lua_pushnil(L);
+        lua_pushnil(L);
+        lua_pushnil(L);
+    } else if (d->file_path == NULL ) {
+        lua_pushnil(L);
+        lua_pushnil(L);
+        lua_pushnil(L);
+    }
+    else {
+        if (!(globalParams)) // globalParams could be already created
+            globalParams = new GlobalParams();
+        uout = new_PDFDoc_userdata(L);
+        uout->d = d;
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = d->pc;
+        uout->pd = d;
+        lua_pushstring(L,d->file_path);
+        lua_pushstring(L,STREAM_URI);
+    }
+    return 3;                   // stream, stream_id, stream_uri
+}
+
+#define ATTRIBUTE_TYPE_ENTRY(name)          \
+    lua_pushstring(L, #name);                \
+    lua_pushinteger(L, Attribute::name);     \
+    lua_settable(L,-3)
+
+
+#define OBJECT_TYPE(name)                   \
+    lua_pushstring(L, #name);                \
+    lua_pushinteger(L, (int)name);           \
+    lua_settable(L,-3)
+
+
+#define STRUCTELEMENT_TYPE_ENTRY(name)      \
+    lua_pushstring(L, #name);                \
+    lua_pushinteger(L, StructElement::name); \
+    lua_settable(L,-3)
+
+
+static int l_Attribute_Type(lua_State * L) {
+    lua_createtable (L, 0, 42);
+    ATTRIBUTE_TYPE_ENTRY(BBox);
+    ATTRIBUTE_TYPE_ENTRY(BackgroundColor);
+    ATTRIBUTE_TYPE_ENTRY(BorderColor);
+    ATTRIBUTE_TYPE_ENTRY(BorderThickness);
+    ATTRIBUTE_TYPE_ENTRY(Color);
+    ATTRIBUTE_TYPE_ENTRY(ColumnGap);
+    ATTRIBUTE_TYPE_ENTRY(ColumnWidths);
+    ATTRIBUTE_TYPE_ENTRY(Desc);
+    ATTRIBUTE_TYPE_ENTRY(Role);
+    ATTRIBUTE_TYPE_ENTRY(TextDecorationColor);
+    ATTRIBUTE_TYPE_ENTRY(TextDecorationThickness);
+    ATTRIBUTE_TYPE_ENTRY(BaselineShift);
+    ATTRIBUTE_TYPE_ENTRY(BlockAlign);
+    ATTRIBUTE_TYPE_ENTRY(BorderStyle);
+    ATTRIBUTE_TYPE_ENTRY(ColSpan);
+    ATTRIBUTE_TYPE_ENTRY(ColumnCount);
+    ATTRIBUTE_TYPE_ENTRY(EndIndent);
+    ATTRIBUTE_TYPE_ENTRY(GlyphOrientationVertical);
+    ATTRIBUTE_TYPE_ENTRY(Headers);
+    ATTRIBUTE_TYPE_ENTRY(Height);
+    ATTRIBUTE_TYPE_ENTRY(InlineAlign);
+    ATTRIBUTE_TYPE_ENTRY(LineHeight);
+    ATTRIBUTE_TYPE_ENTRY(ListNumbering);
+    ATTRIBUTE_TYPE_ENTRY(Padding);
+    ATTRIBUTE_TYPE_ENTRY(Placement);
+    ATTRIBUTE_TYPE_ENTRY(RowSpan);
+    ATTRIBUTE_TYPE_ENTRY(RubyAlign);
+    ATTRIBUTE_TYPE_ENTRY(RubyPosition);
+    ATTRIBUTE_TYPE_ENTRY(Scope);
+    ATTRIBUTE_TYPE_ENTRY(SpaceAfter);
+    ATTRIBUTE_TYPE_ENTRY(SpaceBefore);
+    ATTRIBUTE_TYPE_ENTRY(StartIndent);
+    ATTRIBUTE_TYPE_ENTRY(Summary);
+    ATTRIBUTE_TYPE_ENTRY(TBorderStyle);
+    ATTRIBUTE_TYPE_ENTRY(TPadding);
+    ATTRIBUTE_TYPE_ENTRY(TextAlign);
+    ATTRIBUTE_TYPE_ENTRY(TextDecorationType);
+    ATTRIBUTE_TYPE_ENTRY(TextIndent);
+    ATTRIBUTE_TYPE_ENTRY(Width);
+    ATTRIBUTE_TYPE_ENTRY(WritingMode);
+    ATTRIBUTE_TYPE_ENTRY(Unknown);
+    ATTRIBUTE_TYPE_ENTRY(checked);
+    return 1;
+}
+
+static int l_Object_Type(lua_State * L) {
+    lua_createtable(L,0,16);/*nr of ObjType values*/ ;
+    OBJECT_TYPE(objBool);
+    OBJECT_TYPE(objInt);
+    OBJECT_TYPE(objReal);
+    OBJECT_TYPE(objString);
+    OBJECT_TYPE(objName);
+    OBJECT_TYPE(objNull);
+    OBJECT_TYPE(objArray);
+    OBJECT_TYPE(objDict);
+    OBJECT_TYPE(objStream);
+    OBJECT_TYPE(objRef);
+    OBJECT_TYPE(objCmd);
+    OBJECT_TYPE(objError);
+    OBJECT_TYPE(objEOF);
+    OBJECT_TYPE(objNone);
+    OBJECT_TYPE(objInt64);
+    OBJECT_TYPE(objDead);
+    return 1;
+}
+
+static int l_StructElement_Type(lua_State * L) {
+    lua_createtable (L, 0, 50);
+    STRUCTELEMENT_TYPE_ENTRY(Document);
+    STRUCTELEMENT_TYPE_ENTRY(Part);
+    STRUCTELEMENT_TYPE_ENTRY(Art);
+    STRUCTELEMENT_TYPE_ENTRY(Sect);
+    STRUCTELEMENT_TYPE_ENTRY(Div);
+    STRUCTELEMENT_TYPE_ENTRY(BlockQuote);
+    STRUCTELEMENT_TYPE_ENTRY(Caption);
+    STRUCTELEMENT_TYPE_ENTRY(NonStruct);
+    STRUCTELEMENT_TYPE_ENTRY(Index);
+    STRUCTELEMENT_TYPE_ENTRY(Private);
+    STRUCTELEMENT_TYPE_ENTRY(Span);
+    STRUCTELEMENT_TYPE_ENTRY(Quote);
+    STRUCTELEMENT_TYPE_ENTRY(Note);
+    STRUCTELEMENT_TYPE_ENTRY(Reference);
+    STRUCTELEMENT_TYPE_ENTRY(BibEntry);
+    STRUCTELEMENT_TYPE_ENTRY(Code);
+    STRUCTELEMENT_TYPE_ENTRY(Link);
+    STRUCTELEMENT_TYPE_ENTRY(Annot);
+    STRUCTELEMENT_TYPE_ENTRY(Ruby);
+    STRUCTELEMENT_TYPE_ENTRY(RB);
+    STRUCTELEMENT_TYPE_ENTRY(RT);
+    STRUCTELEMENT_TYPE_ENTRY(RP);
+    STRUCTELEMENT_TYPE_ENTRY(Warichu);
+    STRUCTELEMENT_TYPE_ENTRY(WT);
+    STRUCTELEMENT_TYPE_ENTRY(WP);
+    STRUCTELEMENT_TYPE_ENTRY(P);
+    STRUCTELEMENT_TYPE_ENTRY(H);
+    STRUCTELEMENT_TYPE_ENTRY(H1);
+    STRUCTELEMENT_TYPE_ENTRY(H2);
+    STRUCTELEMENT_TYPE_ENTRY(H3);
+    STRUCTELEMENT_TYPE_ENTRY(H4);
+    STRUCTELEMENT_TYPE_ENTRY(H5);
+    STRUCTELEMENT_TYPE_ENTRY(H6);
+    STRUCTELEMENT_TYPE_ENTRY(L);
+    STRUCTELEMENT_TYPE_ENTRY(LI);
+    STRUCTELEMENT_TYPE_ENTRY(Lbl);
+    STRUCTELEMENT_TYPE_ENTRY(LBody);
+    STRUCTELEMENT_TYPE_ENTRY(Table);
+    STRUCTELEMENT_TYPE_ENTRY(TR);
+    STRUCTELEMENT_TYPE_ENTRY(TH);
+    STRUCTELEMENT_TYPE_ENTRY(TD);
+    STRUCTELEMENT_TYPE_ENTRY(THead);
+    STRUCTELEMENT_TYPE_ENTRY(TFoot);
+    STRUCTELEMENT_TYPE_ENTRY(TBody);
+    STRUCTELEMENT_TYPE_ENTRY(Figure);
+    STRUCTELEMENT_TYPE_ENTRY(Formula);
+    STRUCTELEMENT_TYPE_ENTRY(Form);
+    STRUCTELEMENT_TYPE_ENTRY(TOC);
+    STRUCTELEMENT_TYPE_ENTRY(TOCI);
+    lua_pushstring(L, "Unknown");
+    lua_pushinteger(L, 0);
+    lua_settable(L,-3);
+    return 1;
+}
+
+static int l_AttributeOwner_Type(lua_State * L) {
+    lua_createtable (L, 0, 12);
+    lua_pushstring(L, "XML-1.00");       lua_pushinteger(L, Attribute::XML_1_00);      lua_settable(L,-3);
+    lua_pushstring(L, "HTML-3.20");      lua_pushinteger(L, Attribute::HTML_3_20);     lua_settable(L,-3);
+    lua_pushstring(L, "HTML-4.01");      lua_pushinteger(L, Attribute::HTML_4_01);     lua_settable(L,-3);
+    lua_pushstring(L, "OEB-1.00");       lua_pushinteger(L, Attribute::OEB_1_00);      lua_settable(L,-3);
+    lua_pushstring(L, "RTF-1.05");       lua_pushinteger(L, Attribute::RTF_1_05);      lua_settable(L,-3);
+    lua_pushstring(L, "CSS-1.00");       lua_pushinteger(L, Attribute::CSS_1_00);      lua_settable(L,-3);
+    lua_pushstring(L, "CSS-2.00");       lua_pushinteger(L, Attribute::CSS_2_00);      lua_settable(L,-3);
+    lua_pushstring(L, "Layout");	       lua_pushinteger(L, Attribute::Layout);        lua_settable(L,-3);
+    lua_pushstring(L, "PrintField");     lua_pushinteger(L, Attribute::PrintField);    lua_settable(L,-3);
+    lua_pushstring(L, "Table");	       lua_pushinteger(L, Attribute::Table);         lua_settable(L,-3);
+    lua_pushstring(L, "List");	       lua_pushinteger(L, Attribute::List);          lua_settable(L,-3);
+    lua_pushstring(L, "UserProperties"); lua_pushinteger(L, Attribute::UserProperties);lua_settable(L,-3);
+    return 1;
+}
+
+static const struct luaL_Reg epdflib_f[] = {
+    {"open", l_open_PDFDoc},
+    {"openMemStream", l_open_MemStreamPDFDoc},
+    {"StructElement_Type", l_StructElement_Type},
+    {"Attribute_Type", l_Attribute_Type},
+    {"AttributeOwner_Type",l_AttributeOwner_Type},
+    {"Object_Type", l_Object_Type},
+    {NULL, NULL}
+};
+
+#define m_poppler_get_poppler(in, out, function)               \
+static int m_##in##_##function(lua_State * L)                  \
+{                                                              \
+    out *o;                                                    \
+    udstruct *uin, *uout;                                      \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_##in);          \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)             \
+        pdfdoc_changed_error(L);                               \
+    o = ((in *) uin->d)->function();                           \
+    if (o != NULL) {                                           \
+        uout = new_##out##_userdata(L);                        \
+        uout->d = o;                                           \
+        uout->pc = uin->pc;                                    \
+        uout->pd = uin->pd;                                    \
+    } else                                                     \
+        lua_pushnil(L);                                        \
+    return 1;                                                  \
+}
+
+#define m_poppler_get_BOOL(in, function)                       \
+static int m_##in##_##function(lua_State * L)                  \
+{                                                              \
+    udstruct *uin;                                             \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_##in);          \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)             \
+        pdfdoc_changed_error(L);                               \
+    if (((in *) uin->d)->function())                           \
+        lua_pushboolean(L, 1);                                 \
+    else                                                       \
+        lua_pushboolean(L, 0);                                 \
+    return 1;                                                  \
+}
+
+#define m_poppler_get_INT(in, function)                        \
+static int m_##in##_##function(lua_State * L)                  \
+{                                                              \
+    int i;                                                     \
+    udstruct *uin;                                             \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_##in);          \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)             \
+        pdfdoc_changed_error(L);                               \
+    i = (int) ((in *) uin->d)->function();                     \
+    lua_pushinteger(L, i);                                     \
+    return 1;                                                  \
+}
+
+
+#define m_poppler_get_GUINT(in, function)                      \
+static int m_##in##_##function(lua_State * L)                  \
+{                                                              \
+    unsigned int i;                                            \
+    udstruct *uin;                                             \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_##in);          \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)             \
+        pdfdoc_changed_error(L);                               \
+    i = (unsigned int) ((in *) uin->d)->function();            \
+    lua_pushinteger(L, i);                                     \
+    return 1;                                                  \
+}
+
+#define m_poppler_get_UINT(in, function)                       \
+m_poppler_get_GUINT(in, function)
+
+
+
+#define m_poppler_get_DOUBLE(in, function)                     \
+static int m_##in##_##function(lua_State * L)                  \
+{                                                              \
+    double d;                                                  \
+    udstruct *uin;                                             \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_##in);          \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)             \
+        pdfdoc_changed_error(L);                               \
+    d = (double) ((in *) uin->d)->function();                  \
+    lua_pushnumber(L, d); /* float */                          \
+    return 1;                                                  \
+}
+
+#define m_poppler_get_GOOSTRING(in, function)                  \
+static int m_##in##_##function(lua_State * L)                  \
+{                                                              \
+    GooString *gs;                                             \
+    udstruct *uin;                                             \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_##in);          \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)             \
+        pdfdoc_changed_error(L);                               \
+    gs = ((in *) uin->d)->function();                          \
+    if (gs != NULL)                                            \
+        lua_pushlstring(L, gs->getCString(), gs->getLength()); \
+    else                                                       \
+        lua_pushnil(L);                                        \
+    return 1;                                                  \
+}
+
+#define m_poppler_get_OBJECT(in, function)                     \
+static int m_##in##_##function(lua_State * L)                  \
+{                                                              \
+    udstruct *uin, *uout;                                      \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_##in);          \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)             \
+        pdfdoc_changed_error(L);                               \
+    uout = new_Object_userdata(L);                             \
+    uout->d = new Object();                                    \
+    *((Object *)uout->d) = ((in *) uin->d)->function();                  \
+    uout->atype = ALLOC_LEPDF;                                 \
+    uout->pc = uin->pc;                                        \
+    uout->pd = uin->pd;                                        \
+    return 1;                                                  \
+}
+
+#define m_poppler_do(in, function)                             \
+static int m_##in##_##function(lua_State * L)                  \
+{                                                              \
+    udstruct *uin;                                             \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_##in);          \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)             \
+        pdfdoc_changed_error(L);                               \
+    ((in *) uin->d)->function();                               \
+    return 0;                                                  \
+}
+
+#define m_poppler__tostring(type)                              \
+static int m_##type##__tostring(lua_State * L)                 \
+{                                                              \
+    udstruct *uin;                                             \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_##type);        \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)             \
+        pdfdoc_changed_error(L);                               \
+    lua_pushfstring(L, "%s: %p", #type, (type *) uin->d);      \
+    return 1;                                                  \
+}
+
+#define m_poppler_check_string(in, function)                   \
+static int m_##in##_##function(lua_State * L)                  \
+{                                                              \
+    const char *s;                                             \
+    udstruct *uin;                                             \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_##in);          \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)             \
+        pdfdoc_changed_error(L);                               \
+    s = luaL_checkstring(L, 2);                                \
+    if (((in *) uin->d)->function(s))                          \
+        lua_pushboolean(L, 1);                                 \
+    else                                                       \
+        lua_pushboolean(L, 0);                                 \
+    return 1;                                                  \
+}
+
+/* Annot */
+
+m_poppler_get_BOOL(Annot, isOk);
+
+static int m_Annot_match(lua_State * L)
+{
+    udstruct *uin, *uref;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Annot);
+    uref = (udstruct *) luaL_checkudata(L, 2, M_Ref);
+    if (uin->pd != NULL && uref->pd != NULL && uin->pd != uref->pd)
+        pdfdoc_differs_error(L);
+    if ((uin->pd != NULL && uin->pd->pc != uin->pc)
+        || (uref->pd != NULL && uref->pd->pc != uref->pc))
+        pdfdoc_changed_error(L);
+    lua_pushboolean(L, ((Annot *) uin->d)->match((Ref *) uref->d));
+    return 1;
+}
+
+m_poppler__tostring(Annot);
+
+static int m_Annot__gc(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Annot);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+#ifdef DEBUG
+    printf("\n===== Annot GC ===== uin=<%p>\n", uin);
+#endif
+    if (uin->atype == ALLOC_LEPDF)
+#if 1                           /* def HAVE_ANNOTDECREFCNT */
+        ((Annot *) uin->d)->decRefCnt();
+#else
+        delete(Annot *) uin->d;
+#endif
+    return 0;
+}
+
+static const struct luaL_Reg Annot_m[] = {
+    {"isOk", m_Annot_isOk},
+    {"match", m_Annot_match},
+    {"__tostring", m_Annot__tostring},
+    {"__gc", m_Annot__gc},
+    {NULL, NULL}
+};
+
+/* Annots */
+
+m_poppler_get_INT(Annots, getNumAnnots);
+
+static int m_Annots_getAnnot(lua_State * L)
+{
+    int i, annots;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Annots);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    annots = ((Annots *) uin->d)->getNumAnnots();
+    if (i > 0 && i <= annots) {
+        uout = new_Annot_userdata(L);
+        uout->d = ((Annots *) uin->d)->getAnnot(i);
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+m_poppler__tostring(Annots);
+
+static const struct luaL_Reg Annots_m[] = {
+    {"getNumAnnots", m_Annots_getNumAnnots},
+    {"getAnnot", m_Annots_getAnnot},
+    {"__tostring", m_Annots__tostring},
+    {NULL, NULL}
+};
+
+/* Array */
+
+m_poppler_get_INT(Array, getLength);
+
+static int m_Array_get(lua_State * L)
+{
+    int i, len;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Array);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    len = ((Array *) uin->d)->getLength();
+    if (i > 0 && i <= len) {
+        uout = new_Object_userdata(L);
+        uout->d = new Object();
+        *((Object *) uout->d) = ((Array *) uin->d)->get(i - 1);
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Array_getNF(lua_State * L)
+{
+    int i, len;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Array);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    len = ((Array *) uin->d)->getLength();
+    if (i > 0 && i <= len) {
+        uout = new_Object_userdata(L);
+        uout->d = new Object();
+        *((Object *) uout->d) = ((Array *) uin->d)->getNF(i - 1);
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Array_getString(lua_State * L)
+{
+    GooString *gs;
+    int i, len;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Array);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    len = ((Array *) uin->d)->getLength();
+    if (i > 0 && i <= len) {
+        gs = new GooString();
+        if (((Array *) uin->d)->getString(i - 1, gs))
+            lua_pushlstring(L, gs->getCString(), gs->getLength());
+        else
+            lua_pushnil(L);
+        delete gs;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+m_poppler__tostring(Array);
+
+static const struct luaL_Reg Array_m[] = {
+    {"getLength", m_Array_getLength},
+    {"get", m_Array_get},
+    {"getNF", m_Array_getNF},
+    {"getString", m_Array_getString},
+    {"__tostring", m_Array__tostring},
+    {NULL, NULL}
+};
+
+/* Catalog */
+
+m_poppler_get_BOOL(Catalog, isOk);
+m_poppler_get_INT(Catalog, getNumPages);
+
+static int m_Catalog_getPage(lua_State * L)
+{
+    int i, pages;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Catalog);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    pages = ((Catalog *) uin->d)->getNumPages();
+    if (i > 0 && i <= pages) {
+        uout = new_Page_userdata(L);
+        uout->d = ((Catalog *) uin->d)->getPage(i);
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Catalog_getPageRef(lua_State * L)
+{
+    int i, pages;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Catalog);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    pages = ((Catalog *) uin->d)->getNumPages();
+    if (i > 0 && i <= pages) {
+        uout = new_Ref_userdata(L);
+        uout->d = (Ref *) gmalloc(sizeof(Ref));
+        ((Ref *) uout->d)->num = ((Catalog *) uin->d)->getPageRef(i)->num;
+        ((Ref *) uout->d)->gen = ((Catalog *) uin->d)->getPageRef(i)->gen;
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+m_poppler_get_GOOSTRING(Catalog, getBaseURI);
+m_poppler_get_GOOSTRING(Catalog, readMetadata);
+m_poppler_get_poppler(Catalog, StructTreeRoot, getStructTreeRoot);
+
+static int m_Catalog_findPage(lua_State * L)
+{
+    int num, gen, i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Catalog);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    num = luaL_checkint(L, 2);
+    gen = luaL_checkint(L, 3);
+    i = ((Catalog *) uin->d)->findPage(num, gen);
+    if (i > 0)
+        lua_pushinteger(L, i);
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Catalog_findDest(lua_State * L)
+{
+    GooString *name;
+    LinkDest *dest;
+    const char *s;
+    size_t len;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Catalog);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s = luaL_checklstring(L, 2, &len);
+    name = new GooString(s, len);
+    dest = ((Catalog *) uin->d)->findDest(name);
+    if (dest != NULL) {
+        uout = new_LinkDest_userdata(L);
+        uout->d = dest;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    delete name;
+    return 1;
+}
+
+m_poppler_get_poppler(Catalog, Object, getDests);
+m_poppler_get_INT(Catalog, numEmbeddedFiles);
+
+static int m_Catalog_embeddedFile(lua_State * L)
+{
+    int i, len;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Catalog);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    len = ((Catalog *) uin->d)->numEmbeddedFiles();
+    if (i > 0 && i <= len) {
+        uout = new_FileSpec_userdata(L);
+        uout->d = ((Catalog *) uin->d)->embeddedFile(i - 1);
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+m_poppler_get_INT(Catalog, numJS);
+
+static int m_Catalog_getJS(lua_State * L)
+{
+    GooString *gs;
+    int i, len;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Catalog);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    len = ((Catalog *) uin->d)->numJS();
+    if (i > 0 && i <= len) {
+        gs = ((Catalog *) uin->d)->getJS(i - 1);
+        if (gs != NULL)
+            lua_pushlstring(L, gs->getCString(), gs->getLength());
+        else
+            lua_pushnil(L);
+        delete gs;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+m_poppler_get_poppler(Catalog, Object, getOutline);
+m_poppler_get_poppler(Catalog, Object, getAcroForm);
+
+m_poppler__tostring(Catalog);
+
+static const struct luaL_Reg Catalog_m[] = {
+    {"isOk", m_Catalog_isOk},
+    {"getNumPages", m_Catalog_getNumPages},
+    {"getPage", m_Catalog_getPage},
+    {"getPageRef", m_Catalog_getPageRef},
+    {"getBaseURI", m_Catalog_getBaseURI},
+    {"readMetadata", m_Catalog_readMetadata},
+    {"getStructTreeRoot", m_Catalog_getStructTreeRoot},
+    {"findPage", m_Catalog_findPage},
+    {"findDest", m_Catalog_findDest},
+    {"getDests", m_Catalog_getDests},
+    {"numEmbeddedFiles", m_Catalog_numEmbeddedFiles},
+    {"embeddedFile", m_Catalog_embeddedFile},
+    {"numJS", m_Catalog_numJS},
+    {"getJS", m_Catalog_getJS},
+    {"getOutline", m_Catalog_getOutline},
+    {"getAcroForm", m_Catalog_getAcroForm},
+    {"__tostring", m_Catalog__tostring},
+    {NULL, NULL}
+};
+
+/* Dict */
+
+m_poppler_get_INT(Dict, getLength);
+
+m_poppler_check_string(Dict, is);
+
+static int m_Dict_lookup(lua_State * L)
+{
+    const char *s;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Dict);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s = luaL_checkstring(L, 2);
+    uout = new_Object_userdata(L);
+    uout->d = new Object();
+    *((Object *) uout->d) = ((Dict *) uin->d)->lookup(s);
+    uout->atype = ALLOC_LEPDF;
+    uout->pc = uin->pc;
+    uout->pd = uin->pd;
+    return 1;
+}
+
+static int m_Dict_lookupNF(lua_State * L)
+{
+    const char *s;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Dict);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s = luaL_checkstring(L, 2);
+    uout = new_Object_userdata(L);
+    uout->d = new Object();
+    *((Object *) uout->d) = ((Dict *) uin->d)->lookupNF(s);
+    uout->atype = ALLOC_LEPDF;
+    uout->pc = uin->pc;
+    uout->pd = uin->pd;
+    return 1;
+}
+
+static int m_Dict_lookupInt(lua_State * L)
+{
+    const char *s1, *s2;
+    int i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Dict);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s1 = luaL_checkstring(L, 2);
+    s2 = luaL_checkstring(L, 3);
+    if (((Dict *) uin->d)->lookupInt(s1, s2, &i))
+        lua_pushinteger(L, i);
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Dict_getKey(lua_State * L)
+{
+    int i, len;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Dict);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    len = ((Dict *) uin->d)->getLength();
+    if (i > 0 && i <= len)
+        lua_pushstring(L, ((Dict *) uin->d)->getKey(i - 1));
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Dict_getVal(lua_State * L)
+{
+    int i, len;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Dict);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    len = ((Dict *) uin->d)->getLength();
+    if (i > 0 && i <= len) {
+        uout = new_Object_userdata(L);
+        uout->d = new Object();
+        *((Object *) uout->d) = ((Dict *) uin->d)->getVal(i - 1);
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Dict_getValNF(lua_State * L)
+{
+    int i, len;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Dict);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    len = ((Dict *) uin->d)->getLength();
+    if (i > 0 && i <= len) {
+        uout = new_Object_userdata(L);
+        uout->d = new Object();
+        *((Object *) uout->d) = ((Dict *) uin->d)->getValNF(i - 1);
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+m_poppler_check_string(Dict, hasKey);
+
+m_poppler__tostring(Dict);
+
+static const struct luaL_Reg Dict_m[] = {
+    {"getLength", m_Dict_getLength},
+    {"is", m_Dict_is},
+    {"lookup", m_Dict_lookup},
+    {"lookupNF", m_Dict_lookupNF},
+    {"lookupInt", m_Dict_lookupInt},
+    {"getKey", m_Dict_getKey},
+    {"getVal", m_Dict_getVal},
+    {"getValNF", m_Dict_getValNF},
+    {"hasKey", m_Dict_hasKey},
+    {"__tostring", m_Dict__tostring},
+    {NULL, NULL}
+};
+
+/* EmbFile */
+
+m_poppler_get_INT(EmbFile, size);
+m_poppler_get_GOOSTRING(EmbFile, modDate);
+m_poppler_get_GOOSTRING(EmbFile, createDate);
+m_poppler_get_GOOSTRING(EmbFile, checksum);
+m_poppler_get_GOOSTRING(EmbFile, mimeType);
+
+m_poppler_get_BOOL(EmbFile, isOk);
+
+static int m_EmbFile_save(lua_State * L)
+{
+    const char *s;
+    size_t len;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_EmbFile);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s = luaL_checklstring(L, 2, &len);
+    if (((EmbFile *) uin->d)->save(s))
+        lua_pushboolean(L, 1);
+    else
+        lua_pushboolean(L, 0);
+    return 1;
+}
+
+m_poppler__tostring(EmbFile);
+
+static const struct luaL_Reg EmbFile_m[] = {
+    {"size", m_EmbFile_size},
+    {"modDate", m_EmbFile_modDate},
+    {"createDate", m_EmbFile_createDate},
+    {"checksum", m_EmbFile_checksum},
+    {"mimeType", m_EmbFile_mimeType},
+    {"isOk", m_EmbFile_isOk},
+    {"save", m_EmbFile_save},
+    {"__tostring", m_EmbFile__tostring},
+    {NULL, NULL}
+};
+
+/* FileSpec */
+
+m_poppler_get_BOOL(FileSpec, isOk);
+m_poppler_get_GOOSTRING(FileSpec, getFileName);
+m_poppler_get_GOOSTRING(FileSpec, getFileNameForPlatform);
+m_poppler_get_GOOSTRING(FileSpec, getDescription);
+
+static int m_FileSpec_getEmbeddedFile(lua_State * L)
+{
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_FileSpec);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    uout = new_EmbFile_userdata(L);
+    uout->d = ((FileSpec *) uin->d)->getEmbeddedFile();
+    uout->pc = uin->pc;
+    uout->pd = uin->pd;
+    return 1;
+}
+
+m_poppler__tostring(FileSpec);
+
+static const struct luaL_Reg FileSpec_m[] = {
+    {"isOk", m_FileSpec_isOk},
+    {"getFileName", m_FileSpec_getFileName},
+    {"getFileNameForPlatform", m_FileSpec_getFileNameForPlatform},
+    {"getDescription", m_FileSpec_getDescription},
+    {"getEmbeddedFile", m_FileSpec_getEmbeddedFile},
+    {"__tostring", m_FileSpec__tostring},
+    {NULL, NULL}
+};
+
+/* GooString */
+
+static int m_GooString__tostring(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_GooString);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    lua_pushlstring(L, ((GooString *) uin->d)->getCString(),
+                    ((GooString *) uin->d)->getLength());
+    return 1;
+}
+
+static const struct luaL_Reg GooString_m[] = {
+    {"__tostring", m_GooString__tostring},
+    {NULL, NULL}
+};
+
+/* LinkDest */
+
+static const char *LinkDestKindNames[] = {
+    "XYZ", "Fit", "FitH", "FitV", "FitR", "FitB", "FitBH", "FitBV",
+    NULL
+};
+
+m_poppler_get_BOOL(LinkDest, isOk);
+
+static int m_LinkDest_getKind(lua_State * L)
+{
+    int i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_LinkDest);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = (int) ((LinkDest *) uin->d)->getKind();
+    lua_pushinteger(L, i);
+    return 1;
+}
+
+static int m_LinkDest_getKindName(lua_State * L)
+{
+    int i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_LinkDest);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = (int) ((LinkDest *) uin->d)->getKind();
+    lua_pushstring(L, LinkDestKindNames[i]);
+    return 1;
+}
+
+m_poppler_get_BOOL(LinkDest, isPageRef);
+m_poppler_get_INT(LinkDest, getPageNum);
+
+static int m_LinkDest_getPageRef(lua_State * L)
+{
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_LinkDest);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    uout = new_Ref_userdata(L);
+    uout->d = (Ref *) gmalloc(sizeof(Ref));
+    ((Ref *) uout->d)->num = ((LinkDest *) uin->d)->getPageRef().num;
+    ((Ref *) uout->d)->gen = ((LinkDest *) uin->d)->getPageRef().gen;
+    uout->atype = ALLOC_LEPDF;
+    uout->pc = uin->pc;
+    uout->pd = uin->pd;
+    return 1;
+}
+
+m_poppler_get_DOUBLE(LinkDest, getLeft);
+m_poppler_get_DOUBLE(LinkDest, getBottom);
+m_poppler_get_DOUBLE(LinkDest, getRight);
+m_poppler_get_DOUBLE(LinkDest, getTop);
+m_poppler_get_DOUBLE(LinkDest, getZoom);
+m_poppler_get_BOOL(LinkDest, getChangeLeft);
+m_poppler_get_BOOL(LinkDest, getChangeTop);
+m_poppler_get_BOOL(LinkDest, getChangeZoom);
+
+m_poppler__tostring(LinkDest);
+
+static const struct luaL_Reg LinkDest_m[] = {
+    {"isOk", m_LinkDest_isOk},
+    {"getKind", m_LinkDest_getKind},
+    {"getKindName", m_LinkDest_getKindName},    // not poppler
+    {"isPageRef", m_LinkDest_isPageRef},
+    {"getPageNum", m_LinkDest_getPageNum},
+    {"getPageRef", m_LinkDest_getPageRef},
+    {"getLeft", m_LinkDest_getLeft},
+    {"getBottom", m_LinkDest_getBottom},
+    {"getRight", m_LinkDest_getRight},
+    {"getTop", m_LinkDest_getTop},
+    {"getZoom", m_LinkDest_getZoom},
+    {"getChangeLeft", m_LinkDest_getChangeLeft},
+    {"getChangeTop", m_LinkDest_getChangeTop},
+    {"getChangeZoom", m_LinkDest_getChangeZoom},
+    {"__tostring", m_LinkDest__tostring},
+    {NULL, NULL}
+};
+
+/* Links */
+
+m_poppler_get_INT(Links, getNumLinks);
+
+m_poppler__tostring(Links);
+
+static const struct luaL_Reg Links_m[] = {
+    {"getNumLinks", m_Links_getNumLinks},
+    {"__tostring", m_Links__tostring},
+    {NULL, NULL}
+};
+
+/* Object */
+
+#ifdef HAVE_OBJECT_INITCMD_CONST_CHARP
+#define CHARP_CAST
+#else
+/*
+    Must cast arg of Object::initCmd, Object::isStream, and Object::streamIs
+    from 'const char *' to 'char *', although they are not modified.
+*/
+#define CHARP_CAST (char *)
+#endif
+
+/* Special type checking. */
+
+#define m_Object_isType_(function, cast)                                   \
+static int m_Object_##function(lua_State * L)                              \
+{                                                                          \
+    udstruct *uin;                                                         \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);                    \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)                         \
+        pdfdoc_changed_error(L);                                           \
+    if (lua_gettop(L) >= 2) {                                              \
+        if (lua_isstring(L, 2)                                             \
+            && ((Object *) uin->d)->function(cast lua_tostring(L, 2)))     \
+            lua_pushboolean(L, 1);                                         \
+        else                                                               \
+            lua_pushboolean(L, 0);                                         \
+    } else {                                                               \
+        if (((Object *) uin->d)->function())                               \
+            lua_pushboolean(L, 1);                                         \
+        else                                                               \
+            lua_pushboolean(L, 0);                                         \
+    }                                                                      \
+    return 1;                                                              \
+}
+
+#define m_Object_isType(function) m_Object_isType_(function, )
+#define m_Object_isType_nonconst(function) m_Object_isType_(function, CHARP_CAST)
+
+static int m_Object_fetch(lua_State * L)
+{
+    udstruct *uin, *uxref, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    uxref = (udstruct *) luaL_checkudata(L, 2, M_XRef);
+    if (uin->pd != NULL && uxref->pd != NULL && uin->pd != uxref->pd)
+        pdfdoc_differs_error(L);
+    if ((uin->pd != NULL && uin->pd->pc != uin->pc)
+        || (uxref->pd != NULL && uxref->pd->pc != uxref->pc))
+        pdfdoc_changed_error(L);
+    uout = new_Object_userdata(L);
+    uout->d = new Object();
+    *((Object *) uout->d) = ((Object *) uin->d)->fetch((XRef *) uxref->d);
+    uout->atype = ALLOC_LEPDF;
+    uout->pc = uin->pc;
+    uout->pd = uin->pd;
+    return 1;
+}
+
+static int m_Object_getType(lua_State * L)
+{
+    ObjType t;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    t = ((Object *) uin->d)->getType();
+    lua_pushinteger(L, (int) t);
+    return 1;
+}
+
+static int m_Object_getTypeName(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    lua_pushstring(L, ((Object *) uin->d)->getTypeName());
+    return 1;
+}
+
+m_poppler_get_BOOL(Object, isBool);
+m_poppler_get_BOOL(Object, isInt);
+m_poppler_get_BOOL(Object, isReal);
+m_poppler_get_BOOL(Object, isNum);
+m_poppler_get_BOOL(Object, isString);
+m_Object_isType(isName);
+m_poppler_get_BOOL(Object, isNull);
+m_poppler_get_BOOL(Object, isArray);
+m_Object_isType(isDict);
+m_Object_isType_nonconst(isStream);
+m_poppler_get_BOOL(Object, isRef);
+m_Object_isType(isCmd);
+m_poppler_get_BOOL(Object, isError);
+m_poppler_get_BOOL(Object, isEOF);
+m_poppler_get_BOOL(Object, isNone);
+
+static int m_Object_getBool(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isBool()) {
+        if (((Object *) uin->d)->getBool())
+            lua_pushboolean(L, 1);
+        else
+            lua_pushboolean(L, 0);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getInt(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isInt())
+        lua_pushinteger(L, ((Object *) uin->d)->getInt());
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getReal(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isReal())
+        lua_pushnumber(L, ((Object *) uin->d)->getReal()); /* float */
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getNum(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isInt())
+        lua_pushinteger(L, ((Object *) uin->d)->getInt());
+    else if (((Object *) uin->d)->isReal())
+        lua_pushinteger(L, ((Object *) uin->d)->getReal());
+    else if (((Object *) uin->d)->isNum()) /* redundant */
+        lua_pushnumber(L, ((Object *) uin->d)->getNum()); /* integer or float */
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getString(lua_State * L)
+{
+    GooString *gs;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isString()) {
+        gs = ((Object *) uin->d)->getString();
+        lua_pushlstring(L, gs->getCString(), gs->getLength());
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getName(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isName())
+        lua_pushstring(L, ((Object *) uin->d)->getName());
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getArray(lua_State * L)
+{
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isArray()) {
+        uout = new_Array_userdata(L);
+        uout->d = ((Object *) uin->d)->getArray();
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getDict(lua_State * L)
+{
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isDict()) {
+        uout = new_Dict_userdata(L);
+        uout->d = ((Object *) uin->d)->getDict();
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getStream(lua_State * L)
+{
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isStream()) {
+        uout = new_Stream_userdata(L);
+        uout->d = ((Object *) uin->d)->getStream();
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getRef(lua_State * L)
+{
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isRef()) {
+        uout = new_Ref_userdata(L);
+        uout->d = (Ref *) gmalloc(sizeof(Ref));
+        ((Ref *) uout->d)->num = ((Object *) uin->d)->getRef().num;
+        ((Ref *) uout->d)->gen = ((Object *) uin->d)->getRef().gen;
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getRefNum(lua_State * L)
+{
+    int i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isRef()) {
+        i = ((Object *) uin->d)->getRef().num;
+        lua_pushinteger(L, i);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getRefGen(lua_State * L)
+{
+    int i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isRef()) {
+        i = ((Object *) uin->d)->getRef().gen;
+        lua_pushinteger(L, i);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_getCmd(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isCmd())
+        lua_pushstring(L, ((Object *) uin->d)->getCmd());
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_arrayGetLength(lua_State * L)
+{
+    int len;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isArray()) {
+        len = ((Object *) uin->d)->arrayGetLength();
+        lua_pushinteger(L, len);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_arrayGet(lua_State * L)
+{
+    int i, len;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    if (((Object *) uin->d)->isArray()) {
+        len = ((Object *) uin->d)->arrayGetLength();
+        if (i > 0 && i <= len) {
+            uout = new_Object_userdata(L);
+            uout->d = new Object();
+            *((Object *) uout->d) = ((Object *) uin->d)->arrayGet(i - 1);
+            uout->atype = ALLOC_LEPDF;
+            uout->pc = uin->pc;
+            uout->pd = uin->pd;
+        } else
+            lua_pushnil(L);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_arrayGetNF(lua_State * L)
+{
+    int i, len;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    if (((Object *) uin->d)->isArray()) {
+        len = ((Object *) uin->d)->arrayGetLength();
+        if (i > 0 && i <= len) {
+            uout = new_Object_userdata(L);
+            uout->d = new Object();
+            *((Object *) uout->d) = ((Object *) uin->d)->arrayGetNF(i - 1);
+            uout->atype = ALLOC_LEPDF;
+            uout->pc = uin->pc;
+            uout->pd = uin->pd;
+        } else
+            lua_pushnil(L);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_dictGetLength(lua_State * L)
+{
+    int len;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isDict()) {
+        len = ((Object *) uin->d)->dictGetLength();
+        lua_pushinteger(L, len);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_dictLookup(lua_State * L)
+{
+    const char *s;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s = luaL_checkstring(L, 2);
+    if (((Object *) uin->d)->isDict()) {
+        uout = new_Object_userdata(L);
+        uout->d = new Object();
+        *((Object *) uout->d) = ((Object *) uin->d)->dictLookup(s);
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_dictLookupNF(lua_State * L)
+{
+    const char *s;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s = luaL_checkstring(L, 2);
+    if (((Object *) uin->d)->isDict()) {
+        uout = new_Object_userdata(L);
+        uout->d = new Object();
+        *((Object *) uout->d) = ((Object *) uin->d)->dictLookupNF(s);
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_dictGetKey(lua_State * L)
+{
+    int i, len;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    if (((Object *) uin->d)->isDict()) {
+        len = ((Object *) uin->d)->dictGetLength();
+        if (i > 0 && i <= len)
+            lua_pushstring(L, ((Object *) uin->d)->dictGetKey(i - 1));
+        else
+            lua_pushnil(L);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_dictGetVal(lua_State * L)
+{
+    int i, len;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    if (((Object *) uin->d)->isDict()) {
+        len = ((Object *) uin->d)->dictGetLength();
+        if (i > 0 && i <= len) {
+            uout = new_Object_userdata(L);
+            uout->d = new Object();
+	    *((Object *) uout->d) = ((Object *) uin->d)->dictGetVal(i - 1);
+            uout->atype = ALLOC_LEPDF;
+            uout->pc = uin->pc;
+            uout->pd = uin->pd;
+        } else
+            lua_pushnil(L);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_dictGetValNF(lua_State * L)
+{
+    int i, len;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    if (((Object *) uin->d)->isDict()) {
+        len = ((Object *) uin->d)->dictGetLength();
+        if (i > 0 && i <= len) {
+            uout = new_Object_userdata(L);
+            uout->d = new Object();
+            *((Object *) uout->d) = ((Object *) uin->d)->dictGetValNF(i - 1);
+            uout->atype = ALLOC_LEPDF;
+            uout->pc = uin->pc;
+            uout->pd = uin->pd;
+        } else
+            lua_pushnil(L);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_streamIs(lua_State * L)
+{
+    const char *s;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s = luaL_checkstring(L, 2);
+    if (((Object *) uin->d)->isStream()) {
+        if (((Object *) uin->d)->streamIs(CHARP_CAST s))
+            lua_pushboolean(L, 1);
+        else
+            lua_pushboolean(L, 0);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_streamReset(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isStream())
+        ((Object *) uin->d)->streamReset();
+    return 0;
+}
+
+static int m_Object_streamGetChar(lua_State * L)
+{
+    int i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isStream()) {
+        i = ((Object *) uin->d)->streamGetChar();
+        lua_pushinteger(L, i);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_streamLookChar(lua_State * L)
+{
+    int i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isStream()) {
+        i = ((Object *) uin->d)->streamLookChar();
+        lua_pushinteger(L, i);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_streamGetPos(lua_State * L)
+{
+    int i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isStream()) {
+        i = (int) ((Object *) uin->d)->streamGetPos();
+        lua_pushinteger(L, i);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object_streamSetPos(lua_State * L)
+{
+    int i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    if (((Object *) uin->d)->isStream())
+        ((Object *) uin->d)->streamSetPos(i);
+    return 0;
+}
+
+static int m_Object_streamGetDict(lua_State * L)
+{
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((Object *) uin->d)->isStream()) {
+        uout = new_Dict_userdata(L);
+        uout->d = ((Object *) uin->d)->streamGetDict();
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_Object__gc(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Object);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+#ifdef DEBUG
+    printf("\n===== Object GC ===== uin=<%p>\n", uin);
+#endif
+    if (uin->atype == ALLOC_LEPDF) {
+        /* free() seems to collide with the lua gc */
+        /* */
+        /* ((Object *) uin->d)->free(); */
+        /* */
+        delete(Object *) uin->d;
+    }
+    return 0;
+}
+
+m_poppler__tostring(Object);
+
+static const struct luaL_Reg Object_m[] = {
+    {"fetch", m_Object_fetch},
+    {"getType", m_Object_getType},
+    {"getTypeName", m_Object_getTypeName},
+    {"isBool", m_Object_isBool},
+    {"isInt", m_Object_isInt},
+    {"isReal", m_Object_isReal},
+    {"isNum", m_Object_isNum},
+    {"isString", m_Object_isString},
+    {"isName", m_Object_isName},
+    {"isNull", m_Object_isNull},
+    {"isArray", m_Object_isArray},
+    {"isDict", m_Object_isDict},
+    {"isStream", m_Object_isStream},
+    {"isRef", m_Object_isRef},
+    {"isCmd", m_Object_isCmd},
+    {"isError", m_Object_isError},
+    {"isEOF", m_Object_isEOF},
+    {"isNone", m_Object_isNone},
+    {"getBool", m_Object_getBool},
+    {"getInt", m_Object_getInt},
+    {"getReal", m_Object_getReal},
+    {"getNum", m_Object_getNum},
+    {"getString", m_Object_getString},
+    {"getName", m_Object_getName},
+    {"getArray", m_Object_getArray},
+    {"getDict", m_Object_getDict},
+    {"getStream", m_Object_getStream},
+    {"getRef", m_Object_getRef},
+    {"getRefNum", m_Object_getRefNum},
+    {"getRefGen", m_Object_getRefGen},
+    {"getCmd", m_Object_getCmd},
+    {"arrayGetLength", m_Object_arrayGetLength},
+    {"arrayGet", m_Object_arrayGet},
+    {"arrayGetNF", m_Object_arrayGetNF},
+    {"dictGetLength", m_Object_dictGetLength},
+    {"dictLookup", m_Object_dictLookup},
+    {"dictLookupNF", m_Object_dictLookupNF},
+    {"dictGetKey", m_Object_dictGetKey},
+    {"dictGetVal", m_Object_dictGetVal},
+    {"dictGetValNF", m_Object_dictGetValNF},
+    {"streamIs", m_Object_streamIs},
+    {"streamReset", m_Object_streamReset},
+    {"streamGetChar", m_Object_streamGetChar},
+    {"streamLookChar", m_Object_streamLookChar},
+    {"streamGetPos", m_Object_streamGetPos},
+    {"streamSetPos", m_Object_streamSetPos},
+    {"streamGetDict", m_Object_streamGetDict},
+    {"__tostring", m_Object__tostring},
+    {"__gc", m_Object__gc},
+    {NULL, NULL}
+};
+
+/* Page */
+
+m_poppler_get_BOOL(Page, isOk);
+m_poppler_get_INT(Page, getNum);
+m_poppler_get_poppler(Page, PDFRectangle, getMediaBox);
+m_poppler_get_poppler(Page, PDFRectangle, getCropBox);
+m_poppler_get_BOOL(Page, isCropped);
+m_poppler_get_DOUBLE(Page, getMediaWidth);
+m_poppler_get_DOUBLE(Page, getMediaHeight);
+m_poppler_get_DOUBLE(Page, getCropWidth);
+m_poppler_get_DOUBLE(Page, getCropHeight);
+m_poppler_get_poppler(Page, PDFRectangle, getBleedBox);
+m_poppler_get_poppler(Page, PDFRectangle, getTrimBox);
+m_poppler_get_poppler(Page, PDFRectangle, getArtBox);
+m_poppler_get_INT(Page, getRotate);
+m_poppler_get_GOOSTRING(Page, getLastModified);
+m_poppler_get_poppler(Page, Dict, getBoxColorInfo);
+m_poppler_get_poppler(Page, Dict, getGroup);
+m_poppler_get_poppler(Page, Stream, getMetadata);
+m_poppler_get_poppler(Page, Dict, getPieceInfo);
+m_poppler_get_poppler(Page, Dict, getSeparationInfo);
+m_poppler_get_poppler(Page, Dict, getResourceDict);
+m_poppler_get_OBJECT(Page, getAnnotsObject);
+
+m_poppler_get_OBJECT(Page, getContents);
+
+m_poppler__tostring(Page);
+
+static const struct luaL_Reg Page_m[] = {
+    {"isOk", m_Page_isOk},
+    {"getNum", m_Page_getNum},
+    {"getMediaBox", m_Page_getMediaBox},
+    {"getCropBox", m_Page_getCropBox},
+    {"isCropped", m_Page_isCropped},
+    {"getMediaWidth", m_Page_getMediaWidth},
+    {"getMediaHeight", m_Page_getMediaHeight},
+    {"getCropWidth", m_Page_getCropWidth},
+    {"getCropHeight", m_Page_getCropHeight},
+    {"getBleedBox", m_Page_getBleedBox},
+    {"getTrimBox", m_Page_getTrimBox},
+    {"getArtBox", m_Page_getArtBox},
+    {"getRotate", m_Page_getRotate},
+    {"getLastModified", m_Page_getLastModified},
+    {"getBoxColorInfo", m_Page_getBoxColorInfo},
+    {"getGroup", m_Page_getGroup},
+    {"getMetadata", m_Page_getMetadata},
+    {"getPieceInfo", m_Page_getPieceInfo},
+    {"getSeparationInfo", m_Page_getSeparationInfo},
+    {"getResourceDict", m_Page_getResourceDict},
+    {"getAnnotsObject", m_Page_getAnnotsObject},
+    {"getContents", m_Page_getContents},
+    {"__tostring", m_Page__tostring},
+    {NULL, NULL}
+};
+
+/* PDFDoc */
+
+#define m_PDFDoc_BOOL(function)                         \
+static int m_PDFDoc_##function(lua_State * L)           \
+{                                                       \
+    udstruct *uin;                                      \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc); \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)      \
+        pdfdoc_changed_error(L);                        \
+    if (((PdfDocument *) uin->d)->doc->function())      \
+        lua_pushboolean(L, 1);                          \
+    else                                                \
+        lua_pushboolean(L, 0);                          \
+    return 1;                                           \
+}
+
+#define m_PDFDoc_INT(function)                          \
+static int m_PDFDoc_##function(lua_State * L)           \
+{                                                       \
+    int i;                                              \
+    udstruct *uin;                                      \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc); \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)      \
+        pdfdoc_changed_error(L);                        \
+    i = ((PdfDocument *) uin->d)->doc->function();      \
+    lua_pushinteger(L, i);                              \
+    return 1;                                           \
+}
+
+m_PDFDoc_BOOL(isOk);
+m_PDFDoc_INT(getErrorCode);
+
+static int m_PDFDoc_getFileName(lua_State * L)
+{
+    GooString *gs;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    gs = ((PdfDocument *) uin->d)->doc->getFileName();
+    if (gs != NULL)
+        lua_pushlstring(L, gs->getCString(), gs->getLength());
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_PDFDoc_getErrorCodeName(lua_State * L)
+{
+    int i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = ((PdfDocument *) uin->d)->doc->getErrorCode();
+    lua_pushstring(L, ErrorCodeNames[i]);
+    return 1;
+}
+
+static int m_PDFDoc_getXRef(lua_State * L)
+{
+    XRef *xref;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    xref = ((PdfDocument *) uin->d)->doc->getXRef();
+    if (xref->isOk()) {
+        uout = new_XRef_userdata(L);
+        uout->d = xref;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_PDFDoc_getCatalog(lua_State * L)
+{
+    Catalog *cat;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    cat = ((PdfDocument *) uin->d)->doc->getCatalog();
+    if (cat->isOk()) {
+        uout = new_Catalog_userdata(L);
+        uout->d = cat;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+#define m_PDFDoc_PAGEDIMEN(function)                             \
+static int m_PDFDoc_##function(lua_State * L)                    \
+{                                                                \
+    int i, pages;                                                \
+    double d;                                                    \
+    udstruct *uin;                                               \
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);          \
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)               \
+        pdfdoc_changed_error(L);                                 \
+    i = luaL_checkint(L, 2);                                     \
+    pages = ((PdfDocument *) uin->d)->doc->getNumPages();        \
+    if (i > 0 && i <= pages) {                                   \
+        d = (double) ((PdfDocument *) uin->d)->doc->function(i); \
+        lua_pushnumber(L, d); /* float */                        \
+    } else                                                       \
+        lua_pushnil(L);                                          \
+    return 1;                                                    \
+}
+
+m_PDFDoc_PAGEDIMEN(getPageMediaWidth);
+m_PDFDoc_PAGEDIMEN(getPageMediaHeight);
+m_PDFDoc_PAGEDIMEN(getPageCropWidth);
+m_PDFDoc_PAGEDIMEN(getPageCropHeight);
+m_PDFDoc_INT(getNumPages);
+
+static int m_PDFDoc_readMetadata(lua_State * L)
+{
+    GooString *gs;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((PdfDocument *) uin->d)->doc->getCatalog()->isOk()) {
+        gs = ((PdfDocument *) uin->d)->doc->readMetadata();
+        if (gs != NULL)
+            lua_pushlstring(L, gs->getCString(), gs->getLength());
+        else
+            lua_pushnil(L);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_PDFDoc_getStructTreeRoot(lua_State * L)
+{
+    StructTreeRoot *obj;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((PdfDocument *) uin->d)->doc->getCatalog()->isOk()) {
+        obj = ((PdfDocument *) uin->d)->doc->getStructTreeRoot();
+        uout = new_StructTreeRoot_userdata(L);
+        uout->d = obj;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_PDFDoc_findPage(lua_State * L)
+{
+    int num, gen, i;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    num = luaL_checkint(L, 2);
+    gen = luaL_checkint(L, 3);
+    if (((PdfDocument *) uin->d)->doc->getCatalog()->isOk()) {
+        i = ((PdfDocument *) uin->d)->doc->findPage(num, gen);
+        if (i > 0)
+            lua_pushinteger(L, i);
+        else
+            lua_pushnil(L);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_PDFDoc_getLinks(lua_State * L)
+{
+    int i, pages;
+    Links *links;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = luaL_checkint(L, 2);
+    pages = ((PdfDocument *) uin->d)->doc->getNumPages();
+    if (i > 0 && i <= pages) {
+        links = ((PdfDocument *) uin->d)->doc->getLinks(i);
+        if (links != NULL) {
+            uout = new_Links_userdata(L);
+            uout->d = links;
+            uout->pc = uin->pc;
+            uout->pd = uin->pd;
+        } else
+            lua_pushnil(L);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_PDFDoc_findDest(lua_State * L)
+{
+    GooString *name;
+    LinkDest *dest;
+    const char *s;
+    size_t len;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s = luaL_checklstring(L, 2, &len);
+    name = new GooString(s, len);
+    if (((PdfDocument *) uin->d)->doc->getCatalog()->isOk()) {
+        dest = ((PdfDocument *) uin->d)->doc->findDest(name);
+        if (dest != NULL) {
+            uout = new_LinkDest_userdata(L);
+            uout->d = dest;
+            uout->pc = uin->pc;
+            uout->pd = uin->pd;
+        } else
+            lua_pushnil(L);
+    } else
+        lua_pushnil(L);
+    delete name;
+    return 1;
+}
+
+m_PDFDoc_BOOL(isEncrypted);
+m_PDFDoc_BOOL(okToPrint);
+m_PDFDoc_BOOL(okToChange);
+m_PDFDoc_BOOL(okToCopy);
+m_PDFDoc_BOOL(okToAddNotes);
+m_PDFDoc_BOOL(isLinearized);
+
+static int m_PDFDoc_getDocInfo(lua_State * L)
+{
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((PdfDocument *) uin->d)->doc->getXRef()->isOk()) {
+        uout = new_Object_userdata(L);
+        uout->d = new Object();
+        *((Object *) uout->d) = ((PdfDocument *) uin->d)->doc->getDocInfo();
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_PDFDoc_getDocInfoNF(lua_State * L)
+{
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    if (((PdfDocument *) uin->d)->doc->getXRef()->isOk()) {
+        uout = new_Object_userdata(L);
+        uout->d = new Object();
+        *((Object *) uout->d) = ((PdfDocument *) uin->d)->doc->getDocInfoNF();
+        uout->atype = ALLOC_LEPDF;
+        uout->pc = uin->pc;
+        uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+m_PDFDoc_INT(getPDFMajorVersion);
+m_PDFDoc_INT(getPDFMinorVersion);
+
+m_poppler__tostring(PDFDoc);
+
+static int m_PDFDoc__gc(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFDoc);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+#ifdef DEBUG
+    printf("\n===== PDFDoc GC ===== file_path=<%s>\n",
+           ((PdfDocument *) uin->d)->file_path);
+#endif
+    assert(uin->atype == ALLOC_LEPDF);
+    unrefPdfDocument(((PdfDocument *) uin->d)->file_path);
+    return 0;
+}
+
+static const struct luaL_Reg PDFDoc_m[] = {
+    {"isOk", m_PDFDoc_isOk},
+    {"getErrorCode", m_PDFDoc_getErrorCode},
+    {"getErrorCodeName", m_PDFDoc_getErrorCodeName},    // not poppler
+    {"getFileName", m_PDFDoc_getFileName},
+    {"getXRef", m_PDFDoc_getXRef},
+    {"getCatalog", m_PDFDoc_getCatalog},
+    {"getPageMediaWidth", m_PDFDoc_getPageMediaWidth},
+    {"getPageMediaHeight", m_PDFDoc_getPageMediaHeight},
+    {"getPageCropWidth", m_PDFDoc_getPageCropWidth},
+    {"getPageCropHeight", m_PDFDoc_getPageCropHeight},
+    {"getNumPages", m_PDFDoc_getNumPages},
+    {"readMetadata", m_PDFDoc_readMetadata},
+    {"getStructTreeRoot", m_PDFDoc_getStructTreeRoot},
+    {"findPage", m_PDFDoc_findPage},
+    {"getLinks", m_PDFDoc_getLinks},
+    {"findDest", m_PDFDoc_findDest},
+    {"isEncrypted", m_PDFDoc_isEncrypted},
+    {"okToPrint", m_PDFDoc_okToPrint},
+    {"okToChange", m_PDFDoc_okToChange},
+    {"okToCopy", m_PDFDoc_okToCopy},
+    {"okToAddNotes", m_PDFDoc_okToAddNotes},
+    {"isLinearized", m_PDFDoc_isLinearized},
+    {"getDocInfo", m_PDFDoc_getDocInfo},
+    {"getDocInfoNF", m_PDFDoc_getDocInfoNF},
+    {"getPDFMajorVersion", m_PDFDoc_getPDFMajorVersion},
+    {"getPDFMinorVersion", m_PDFDoc_getPDFMinorVersion},
+    {"__tostring", m_PDFDoc__tostring},
+    {"__gc", m_PDFDoc__gc},
+    {NULL, NULL}
+};
+
+/* PDFRectangle */
+
+m_poppler_get_BOOL(PDFRectangle, isValid);
+
+m_poppler__tostring(PDFRectangle);
+
+static int m_PDFRectangle__index(lua_State * L)
+{
+    const char *s;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFRectangle);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s = luaL_checkstring(L, 2);
+    if (strlen(s) == 2) {
+        if (s[0] == 'x') {
+            if (s[1] == '1')
+                lua_pushnumber(L, ((PDFRectangle *) uin->d)->x1); /* float */
+            else if (s[1] == '2')
+                lua_pushnumber(L, ((PDFRectangle *) uin->d)->x2); /* float */
+            else
+                lua_pushnil(L);
+        } else if (s[0] == 'y') {
+            if (s[1] == '1')
+                lua_pushnumber(L, ((PDFRectangle *) uin->d)->y1); /* float */
+            else if (s[1] == '2')
+                lua_pushnumber(L, ((PDFRectangle *) uin->d)->y2); /* float */
+            else
+                lua_pushnil(L);
+        } else
+            lua_pushnil(L);
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_PDFRectangle__newindex(lua_State * L)
+{
+    double d;
+    const char *s;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFRectangle);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s = luaL_checkstring(L, 2);
+    d = luaL_checknumber(L, 3);
+    if (strlen(s) == 2) {
+        if (s[0] == 'x') {
+            if (s[1] == '1')
+                ((PDFRectangle *) uin->d)->x1 = d;
+            else if (s[1] == '2')
+                ((PDFRectangle *) uin->d)->x2 = d;
+            else
+                luaL_error(L, "wrong PDFRectangle coordinate (%s)", s);
+        } else if (s[0] == 'y') {
+            if (s[1] == '1')
+                ((PDFRectangle *) uin->d)->y1 = d;
+            else if (s[1] == '2')
+                ((PDFRectangle *) uin->d)->y2 = d;
+        } else
+            luaL_error(L, "wrong PDFRectangle coordinate (%s)", s);
+    } else
+        luaL_error(L, "wrong PDFRectangle coordinate (%s)", s);
+    return 0;
+}
+
+static int m_PDFRectangle__gc(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_PDFRectangle);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+#ifdef DEBUG
+    printf("\n===== PDFRectangle GC ===== uin=<%p>\n", uin);
+#endif
+    if (uin->atype == ALLOC_LEPDF)
+        delete(PDFRectangle *) uin->d;
+    return 0;
+}
+
+static const struct luaL_Reg PDFRectangle_m[] = {
+    {"isValid", m_PDFRectangle_isValid},
+    {"__index", m_PDFRectangle__index},
+    {"__newindex", m_PDFRectangle__newindex},
+    {"__tostring", m_PDFRectangle__tostring},
+    {"__gc", m_PDFRectangle__gc},
+    {NULL, NULL}
+};
+
+/* Ref */
+
+static int m_Ref__index(lua_State * L)
+{
+    const char *s;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Ref);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    s = luaL_checkstring(L, 2);
+    if (strcmp(s, "num") == 0)
+        lua_pushinteger(L, ((Ref *) uin->d)->num);
+    else if (strcmp(s, "gen") == 0)
+        lua_pushinteger(L, ((Ref *) uin->d)->gen);
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+m_poppler__tostring(Ref);
+
+static int m_Ref__gc(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Ref);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+#ifdef DEBUG
+    printf("\n===== Ref GC ===== uin=<%p>\n", uin);
+#endif
+    if (uin->atype == ALLOC_LEPDF && ((Ref *) uin->d) != NULL)
+        gfree(((Ref *) uin->d));
+    return 0;
+}
+
+static const struct luaL_Reg Ref_m[] = {
+    {"__index", m_Ref__index},
+    {"__tostring", m_Ref__tostring},
+    {"__gc", m_Ref__gc},
+    {NULL, NULL}
+};
+
+/* Stream */
+
+static const char *StreamKindNames[] = {
+    "File", "ASCIIHex", "ASCII85", "LZW", "RunLength", "CCITTFax", "DCT",
+    "Flate", "JBIG2", "JPX", "Weird",
+    NULL
+};
+
+m_poppler_get_INT(Stream, getKind);
+
+static int m_Stream_getKindName(lua_State * L)
+{
+    StreamKind t;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Stream);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    t = ((Stream *) uin->d)->getKind();
+    lua_pushstring(L, StreamKindNames[t]);
+    return 1;
+}
+
+m_poppler_do(Stream, reset);
+m_poppler_do(Stream, close);
+m_poppler_get_INT(Stream, getChar);
+m_poppler_get_INT(Stream, lookChar);
+m_poppler_get_INT(Stream, getRawChar);
+m_poppler_get_INT(Stream, getUnfilteredChar);
+m_poppler_do(Stream, unfilteredReset);
+m_poppler_get_INT(Stream, getPos);
+m_poppler_get_BOOL(Stream, isBinary);
+m_poppler_get_poppler(Stream, Stream, getUndecodedStream);
+m_poppler_get_poppler(Stream, Dict, getDict);
+
+m_poppler__tostring(Stream);
+
+static const struct luaL_Reg Stream_m[] = {
+    {"getKind", m_Stream_getKind},
+    {"getKindName", m_Stream_getKindName},      // not poppler
+    {"reset", m_Stream_reset},
+    {"close", m_Stream_close},
+    {"getUndecodedStream", m_Stream_getUndecodedStream},
+    {"getChar", m_Stream_getChar},
+    {"lookChar", m_Stream_lookChar},
+    {"getRawChar", m_Stream_getRawChar},
+    {"getUnfilteredChar", m_Stream_getUnfilteredChar},
+    {"unfilteredReset", m_Stream_unfilteredReset},
+    {"getPos", m_Stream_getPos},
+    {"isBinary", m_Stream_isBinary},
+    {"getUndecodedStream", m_Stream_getUndecodedStream},
+    {"getDict", m_Stream_getDict},
+    {"__tostring", m_Stream__tostring},
+    {NULL, NULL}
+};
+
+/* TextSpan */
+
+m_poppler_get_GOOSTRING(TextSpan, getText);
+m_poppler__tostring(TextSpan);
+
+static const struct luaL_Reg TextSpan_m[] = {
+    {"getText", m_TextSpan_getText},
+    {"__tostring", m_TextSpan__tostring},
+    {NULL, NULL}
+};
+
+/* Attribute */
+
+m_poppler_get_BOOL(Attribute,isOk);
+m_poppler_get_INT(Attribute,getType);
+m_poppler_get_INT(Attribute,getOwner);
+m_poppler_get_GOOSTRING(Attribute,getName);
+
+static int m_Attribute_getTypeName(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Attribute);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    lua_pushstring(L, ((Attribute *) uin->d)->getTypeName());
+    return 1;
+}
+
+static int m_Attribute_getOwnerName(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Attribute);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    lua_pushstring(L, ((Attribute *) uin->d)->getOwnerName());
+    return 1;
+}
+
+static int m_Attribute_getValue(lua_State * L)
+{
+    udstruct *uin, *uout;
+    Object *origin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Attribute);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    uout = new_Object_userdata(L);
+    uout->d = new Object();
+    origin = (Object *) (((Attribute *) uin->d)->getValue());
+    *((Object *) uout->d) = origin->copy();
+    uout->atype = ALLOC_LEPDF;
+    uout->pc = uin->pc;
+    uout->pd = uin->pd;
+    return 1;
+}
+
+static int m_Attribute_getDefaultValue(lua_State * L)
+{
+    Attribute::Type t;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Attribute);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    t = (Attribute::Type) luaL_checkint(L, 2);
+    uout = new_Object_userdata(L);
+    uout->d = ((Attribute *)uin->d)->getDefaultValue(t)  ;
+    //uout->atype = ALLOC_LEPDF;
+    uout->pc = uin->pc;
+    uout->pd = uin->pd;
+    return 1;
+}
+
+m_poppler_get_GUINT(Attribute,getRevision);
+
+m_poppler_get_BOOL(Attribute, isHidden);
+
+static int m_Attribute_getFormattedValue(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Attribute);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    lua_pushstring(L, ((Attribute *) uin->d)->getFormattedValue());
+    return 1;
+}
+
+static int m_Attribute__gc(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_Attribute);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+#ifdef DEBUG
+    printf("\n===== Attribute GC ===== uin=<%p>\n", uin);
+#endif
+    if (uin->atype == ALLOC_LEPDF) {
+        delete(Attribute *) uin->d;
+    }
+    return 0;
+}
+
+m_poppler__tostring(Attribute);
+
+
+static const struct luaL_Reg Attribute_m[] = {
+    {"isOk",m_Attribute_isOk},
+    {"getType",m_Attribute_getType},
+    {"getOwner",m_Attribute_getOwner},
+    {"getTypeName",m_Attribute_getTypeName},
+    {"getOwnerName",m_Attribute_getOwnerName},
+    {"getValue",m_Attribute_getValue},
+    {"getDefaultValue",m_Attribute_getDefaultValue},
+    {"getName",m_Attribute_getName},
+    {"getRevision",m_Attribute_getRevision},
+    {"isHidden",m_Attribute_isHidden},
+    {"getFormattedValue",m_Attribute_getFormattedValue},
+    {"__gc", m_Attribute__gc},
+    {"__tostring", m_Attribute__tostring},
+    {NULL, NULL}
+};
+
+/* StructElement */
+
+m_poppler_get_INT(StructElement,getType);
+m_poppler_get_BOOL(StructElement,isOk);
+m_poppler_get_BOOL(StructElement,isBlock);
+m_poppler_get_BOOL(StructElement,isInline);
+m_poppler_get_BOOL(StructElement,isGrouping);
+m_poppler_get_BOOL(StructElement,isContent);
+m_poppler_get_BOOL(StructElement,isObjectRef);
+m_poppler_get_BOOL(StructElement,hasPageRef);
+m_poppler_get_INT(StructElement,getMCID);
+m_poppler_get_INT(StructElement, getNumChildren);
+
+m_poppler_get_GUINT(StructElement,getRevision);
+m_poppler_get_UINT(StructElement,getNumAttributes);
+
+m_poppler_get_GOOSTRING(StructElement, getID);
+m_poppler_get_GOOSTRING(StructElement, getLanguage);
+m_poppler_get_GOOSTRING(StructElement, getTitle);
+m_poppler_get_GOOSTRING(StructElement, getExpandedAbbr);
+m_poppler_get_GOOSTRING(StructElement, getAltText);
+m_poppler_get_GOOSTRING(StructElement, getActualText);
+
+m_poppler_get_poppler(StructElement, StructTreeRoot, getStructTreeRoot);
+m_poppler__tostring(StructElement);
+
+static int m_StructElement_getObjectRef(lua_State * L)
+{
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_StructElement);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    uout = new_Ref_userdata(L);
+    uout->d = (Ref *) gmalloc(sizeof(Ref));
+    ((Ref *) uout->d)->num = ((StructElement *) uin->d)->getObjectRef().num;
+    ((Ref *) uout->d)->gen = ((StructElement *) uin->d)->getObjectRef().gen;
+    uout->atype = ALLOC_LEPDF;
+    uout->pc = uin->pc;
+    uout->pd = uin->pd;
+    return 1;
+}
+
+static int m_StructElement_getParentRef(lua_State * L)
+{
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_StructElement);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    uout = new_Ref_userdata(L);
+    uout->d = (Ref *) gmalloc(sizeof(Ref));
+    ((Ref *) uout->d)->num = ((StructElement *) uin->d)->getParentRef().num;
+    ((Ref *) uout->d)->gen = ((StructElement *) uin->d)->getParentRef().gen;
+    uout->atype = ALLOC_LEPDF;
+    uout->pc = uin->pc;
+    uout->pd = uin->pd;
+    return 1;
+}
+
+/*
+    Not exactly as the header:
+
+    Ref = StructElement:getPageRef()
+
+    Ref is false if the C++ function return false
+
+*/
+
+static int m_StructElement_getPageRef(lua_State * L)
+{
+    GBool b;
+    Ref *r;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_StructElement);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    r = (Ref *) gmalloc(sizeof(Ref));
+    b = ((StructElement *) uin->d)->getPageRef( *r );
+    if (b) {
+      uout = new_Ref_userdata(L);
+      uout->d = r ;
+   /* uout->atype = ALLOC_LEPDF; */
+      uout->pc = uin->pc;
+      uout->pd = uin->pd;
+    } else
+      lua_pushboolean(L,0);
+    return 1;
+}
+
+static int m_StructElement_getTypeName(lua_State * L)
+{
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_StructElement);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    lua_pushstring(L, ((StructElement *) uin->d)->getTypeName());
+    return 1;
+}
+
+static int m_StructElement_getText(lua_State * L)
+{
+    GBool i;
+    GooString *gs;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_StructElement);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = (GBool) lua_toboolean(L, 2);
+    gs =  ((StructElement *) uin->d)->getText(i);
+    if (gs != NULL)
+        lua_pushlstring(L, gs->getCString(), gs->getLength());
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_StructElement_getChild(lua_State * L)
+{
+    StructElement *c;
+    int i;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_StructElement);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = (int) luaL_checkint(L, 2);
+    c =  ((StructElement *) uin->d)->getChild(i-1);
+    if (c != NULL) {
+      uout = new_StructElement_userdata(L);
+      uout->d = c ;
+   /* uout->atype = ALLOC_LEPDF; */
+      uout->pc = uin->pc;
+      uout->pd = uin->pd;
+    }
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_StructElement_getAttribute(lua_State * L)
+{
+    Attribute *a;
+    int i;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_StructElement);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = (int) luaL_checkint(L, 2);
+    a =  ((StructElement *) uin->d)->getAttribute(i-1);
+    if (a != NULL) {
+      uout = new_Attribute_userdata(L);
+      uout->d = a ;
+      uout->pc = uin->pc;
+      uout->pd = uin->pd;
+    }
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+static int m_StructElement_findAttribute(lua_State * L)
+{
+    Attribute::Type t;
+    Attribute::Owner o;
+    GBool g;
+    udstruct *uin, *uout;
+    const Attribute *a;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_StructElement);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    t = (Attribute::Type) luaL_checkint(L,1);
+    o = (Attribute::Owner) luaL_checkint(L,2);
+    g = (GBool) lua_toboolean(L, 3);
+    a = ((StructElement *) uin->d)->findAttribute(t,g,o);
+
+    if (a!=NULL){
+      uout = new_Attribute_userdata(L);
+      uout->d = new Attribute(a->getType(),a->getValue());
+      uout->atype = ALLOC_LEPDF;
+      uout->pc = uin->pc;
+      uout->pd = uin->pd;
+    } else
+        lua_pushnil(L);
+    return 1;
+}
+
+/* This returns a lua table */
+
+static int m_StructElement_getTextSpans(lua_State * L)
+{
+    int i ;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_StructElement);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+
+    if ((((StructElement *) uin->d)->getTextSpans()).size()>0) {
+      lua_createtable (L,
+		       (int) (((StructElement *) uin->d)->getTextSpans()).size(),
+		       0);
+      for(i=0;i<(int) (((StructElement *) uin->d)->getTextSpans()).size(); i++){
+	uout = new_TextSpan_userdata(L);
+	uout->d = new TextSpan( (((StructElement *) uin->d)->getTextSpans())[i] );
+	uout->atype = ALLOC_LEPDF;
+	uout->pc = uin->pc;
+	uout->pd = uin->pd;
+	lua_rawseti(L,-2,i+1);
+      }
+    } else
+      lua_pushnil(L);
+    return 1;
+}
+
+static const struct luaL_Reg StructElement_m[] = {
+    {"getTypeName", m_StructElement_getTypeName},
+    {"getType",m_StructElement_getType},
+    {"isOk",m_StructElement_isOk},
+    {"isBlock",m_StructElement_isBlock},
+    {"isInline",m_StructElement_isInline},
+    {"isGrouping",m_StructElement_isGrouping},
+    {"isContent",m_StructElement_isContent},
+    {"isObjectRef",m_StructElement_isObjectRef},
+    {"getMCID",m_StructElement_getMCID},
+    {"getObjectRef",m_StructElement_getObjectRef},
+    {"getParentRef",m_StructElement_getParentRef},
+    {"hasPageRef",m_StructElement_hasPageRef},
+    {"getPageRef",m_StructElement_getPageRef},
+    {"getStructTreeRoot",m_StructElement_getStructTreeRoot},
+    {"getID",m_StructElement_getID},
+    {"getLanguage",m_StructElement_getLanguage},
+    {"getRevision",m_StructElement_getRevision},
+    {"getTitle",m_StructElement_getTitle},
+    {"getExpandedAbbr",m_StructElement_getExpandedAbbr},
+    {"getNumChildren",m_StructElement_getNumChildren},
+    {"getChild",m_StructElement_getChild},
+    {"getNumAttributes",m_StructElement_getNumAttributes},
+    {"getAttribute",m_StructElement_getAttribute},
+    {"findAttribute",m_StructElement_findAttribute},
+    {"getAltText",m_StructElement_getAltText},
+    {"getActualText",m_StructElement_getActualText},
+    {"getText",m_StructElement_getText},
+    {"getTextSpans",m_StructElement_getTextSpans},
+    {"__tostring", m_StructElement__tostring},
+    {NULL, NULL}
+};
+
+/* StructTreeRoot */
+
+m_poppler_get_INT(StructTreeRoot, getNumChildren);
+m_poppler_get_poppler(StructTreeRoot, PDFDoc, getDoc);
+m_poppler_get_poppler(StructTreeRoot, Dict, getRoleMap);
+m_poppler_get_poppler(StructTreeRoot, Dict, getClassMap);
+m_poppler__tostring(StructTreeRoot);
+
+static int m_StructTreeRoot_getChild(lua_State * L)
+{
+    unsigned int i;
+    udstruct *uin, *uout;
+    StructElement *child ;
+    StructTreeRoot *root ;
+
+    uin = (udstruct *) luaL_checkudata(L, 1, M_StructTreeRoot);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = (unsigned) luaL_checkint(L, 2);
+    root = (StructTreeRoot *) uin->d;
+    if (i-1 < root->getNumChildren() ){
+       child = root->getChild(i-1);
+       uout = new_StructElement_userdata(L);
+       uout->d = child;
+    /* uout->atype = ALLOC_LEPDF; */
+       uout->pc = uin->pc;
+       uout->pd = uin->pd;
+    } else
+      lua_pushnil(L);
+    return 1;
+}
+
+static int m_StructTreeRoot_findParentElement(lua_State * L)
+{
+    unsigned int i;
+    udstruct *uin,  *uout;
+    const StructElement *parent ;
+    StructTreeRoot *root ;
+
+    uin = (udstruct *) luaL_checkudata(L, 1, M_StructTreeRoot);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    i = (unsigned) luaL_checkint(L, 2);
+    root = (StructTreeRoot *) uin->d;
+    parent = root->findParentElement(i-1);
+    if (parent != NULL) {
+       uout = new_StructElement_userdata(L);
+       /* see https://isocpp.org/wiki/faq/const-correctness#aliasing-and-const */
+       uout->d = (StructElement *) parent;
+       uout->atype = ALLOC_LEPDF;
+       uout->pc = uin->pc;
+       uout->pd = uin->pd;
+    } else
+      lua_pushnil(L);
+    return 1;
+}
+
+static const struct luaL_Reg StructTreeRoot_m[] = {
+    {"getDoc",m_StructTreeRoot_getDoc},
+    {"getRoleMap",m_StructTreeRoot_getRoleMap},
+    {"getClassMap",m_StructTreeRoot_getClassMap},
+    {"getNumChildren",m_StructTreeRoot_getNumChildren},
+    {"getChild",m_StructTreeRoot_getChild},
+    {"findParentElement",m_StructTreeRoot_findParentElement},
+    {"__tostring", m_StructTreeRoot__tostring},
+    {NULL, NULL}
+};
+
+/* XRef */
+
+m_poppler_get_BOOL(XRef, isOk);
+m_poppler_get_INT(XRef, getErrorCode);
+m_poppler_get_BOOL(XRef, isEncrypted);
+m_poppler_get_BOOL(XRef, okToPrint);
+m_poppler_get_BOOL(XRef, okToPrintHighRes);
+m_poppler_get_BOOL(XRef, okToChange);
+m_poppler_get_BOOL(XRef, okToCopy);
+m_poppler_get_BOOL(XRef, okToAddNotes);
+m_poppler_get_BOOL(XRef, okToFillForm);
+m_poppler_get_BOOL(XRef, okToAccessibility);
+m_poppler_get_BOOL(XRef, okToAssemble);
+m_poppler_get_OBJECT(XRef, getCatalog);
+
+static int m_XRef_fetch(lua_State * L)
+{
+    int num, gen;
+    udstruct *uin, *uout;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_XRef);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    num = luaL_checkint(L, 2);
+    gen = luaL_checkint(L, 3);
+    uout = new_Object_userdata(L);
+    uout->d = new Object();
+    *((Object *) uout->d) = ((XRef *) uin->d)->fetch(num, gen);
+    uout->atype = ALLOC_LEPDF;
+    uout->pc = uin->pc;
+    uout->pd = uin->pd;
+    return 1;
+}
+
+m_poppler_get_OBJECT(XRef, getDocInfo);
+m_poppler_get_OBJECT(XRef, getDocInfoNF);
+m_poppler_get_INT(XRef, getNumObjects);
+m_poppler_get_INT(XRef, getRootNum);
+m_poppler_get_INT(XRef, getRootGen);
+
+static int m_XRef_getNumEntry(lua_State * L)
+{
+    int i, offset;
+    udstruct *uin;
+    uin = (udstruct *) luaL_checkudata(L, 1, M_XRef);
+    if (uin->pd != NULL && uin->pd->pc != uin->pc)
+        pdfdoc_changed_error(L);
+    offset = luaL_checkint(L, 2);
+    i = ((XRef *) uin->d)->getNumEntry(offset);
+    if (i >= 0)
+        lua_pushinteger(L, i);
+    else
+        lua_pushnil(L);
+    return 1;
+}
+
+m_poppler_get_poppler(XRef, Object, getTrailerDict);
+
+m_poppler__tostring(XRef);
+
+static const struct luaL_Reg XRef_m[] = {
+    {"isOk", m_XRef_isOk},
+    {"getErrorCode", m_XRef_getErrorCode},
+    {"isEncrypted", m_XRef_isEncrypted},
+    {"okToPrint", m_XRef_okToPrint},
+    {"okToPrintHighRes", m_XRef_okToPrintHighRes},
+    {"okToChange", m_XRef_okToChange},
+    {"okToCopy", m_XRef_okToCopy},
+    {"okToAddNotes", m_XRef_okToAddNotes},
+    {"okToFillForm", m_XRef_okToFillForm},
+    {"okToAccessibility", m_XRef_okToAccessibility},
+    {"okToAssemble", m_XRef_okToAssemble},
+    {"getCatalog", m_XRef_getCatalog},
+    {"fetch", m_XRef_fetch},
+    {"getDocInfo", m_XRef_getDocInfo},
+    {"getDocInfoNF", m_XRef_getDocInfoNF},
+    {"getNumObjects", m_XRef_getNumObjects},
+    {"getRootNum", m_XRef_getRootNum},
+    {"getRootGen", m_XRef_getRootGen},
+    {"getNumEntry", m_XRef_getNumEntry},
+    {"getTrailerDict", m_XRef_getTrailerDict},
+    {"__tostring", m_XRef__tostring},
+    {NULL, NULL}
+};
+
+/* XRefEntry */
+
+m_poppler__tostring(XRefEntry);
+
+static const struct luaL_Reg XRefEntry_m[] = {
+    {"__tostring", m_XRefEntry__tostring},
+    {NULL, NULL}
+};
+
+/* Done */
+
+#ifdef LuajitTeX
+#define setfuncs_meta(type)                 \
+    luaL_newmetatable(L, M_##type);         \
+    lua_pushvalue(L, -1);                   \
+    lua_setfield(L, -2, "__index");         \
+    lua_pushstring(L, "no user access");    \
+    lua_setfield(L, -2, "__metatable");     \
+    luaL_openlib(L, NULL, type##_m, 0)
+#else
+#define setfuncs_meta(type)                 \
+    luaL_newmetatable(L, M_##type);         \
+    lua_pushvalue(L, -1);                   \
+    lua_setfield(L, -2, "__index");         \
+    lua_pushstring(L, "no user access");    \
+    lua_setfield(L, -2, "__metatable");     \
+    luaL_setfuncs(L, type##_m, 0)
+#endif
+
+int luaopen_epdf(lua_State * L)
+{
+    setfuncs_meta(Annot);
+    setfuncs_meta(Annots);
+    setfuncs_meta(Array);
+    setfuncs_meta(Catalog);
+    setfuncs_meta(Dict);
+    setfuncs_meta(EmbFile);
+    setfuncs_meta(FileSpec);
+    setfuncs_meta(GooString);
+    setfuncs_meta(LinkDest);
+    setfuncs_meta(Links);
+    setfuncs_meta(Object);
+    setfuncs_meta(Page);
+    setfuncs_meta(PDFDoc);
+    setfuncs_meta(PDFRectangle);
+    setfuncs_meta(Ref);
+    setfuncs_meta(Stream);
+    setfuncs_meta(Attribute);
+    setfuncs_meta(StructElement);
+    setfuncs_meta(StructTreeRoot);
+    setfuncs_meta(TextSpan);
+    setfuncs_meta(XRef);
+    setfuncs_meta(XRefEntry);
+    luaL_openlib(L, "epdf", epdflib_f, 0);
+    return 1;
+}

Modified: trunk/Build/source/texk/web2c/luatexdir/lua/lfontlib.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/lua/lfontlib.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/lua/lfontlib.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -44,7 +44,7 @@
             if (strlen(cnom)) {
                 internal_font_number f = get_fontid();
                 if (read_tfm_info(f, cnom, s)) {
-                    int k = font_to_lua(L, f);
+                    int k = font_to_lua(L, f, 0);
                     delete_font(f);
                     return k;
                 } else {
@@ -118,7 +118,7 @@
         return 1;
     } else {
         lua_pushinteger(L, i);
-        if (!font_to_lua(L, i))
+        if (!font_to_lua(L, i, 1))
             lua_pushnil(L);
         return 2;
     }
@@ -251,12 +251,21 @@
 static int getfont(lua_State * L)
 {
     int i = luaL_checkinteger(L, -1);
-    if (i && is_valid_font(i) && font_to_lua(L, i))
+    if (i && is_valid_font(i) && font_to_lua(L, i, 1))
         return 1;
     lua_pushnil(L);
     return 1;
 }
 
+static int getcopy(lua_State * L)
+{
+    int i = luaL_checkinteger(L, -1);
+    if (i && is_valid_font(i) && font_to_lua(L, i, 0))
+        return 1;
+    lua_pushnil(L);
+    return 1;
+}
+
 static int getparameters(lua_State * L)
 {
     int i = luaL_checkinteger(L, -1);
@@ -293,6 +302,7 @@
     {"max", tex_max_font},
     {"each", tex_each_font},
     {"getfont", getfont},
+    {"getcopy", getcopy},
     {"getparameters", getparameters},
     {"setfont", setfont},
     {"addcharacters", addcharacters},

Modified: trunk/Build/source/texk/web2c/luatexdir/lua/lnewtokenlib.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/lua/lnewtokenlib.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/lua/lnewtokenlib.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1164,6 +1164,9 @@
         if (n == 1)
             return 0;
         ct = (int) lua_tointeger(L, 1);
+        if (!valid_catcode_table(ct)) {
+            ct = cat_code_table_par;
+        }
         name = lua_tolstring(L, 2, &lname);
         if (n > 2)
             str = lua_tolstring(L, 3, &lstr);
@@ -1224,10 +1227,14 @@
                         str += _s ;
                         break ;
                     } else {
+                        if (_lname == 0) {
+                            _lname = _lname + _s ;
+                            str += _s ;
+                        }
                         break ;
                     }
                 }
-                if (_s > 0) {
+                if (_lname > 0) {
                     /* we have a potential \cs */
                     _cs = string_lookup(_name, _lname);
                     if (_cs == undefined_control_sequence) {

Modified: trunk/Build/source/texk/web2c/luatexdir/lua/lpdfelib.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/lua/lpdfelib.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/lua/lpdfelib.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -45,7 +45,7 @@
 # undef output
 # endif
 
-# include "luapplib/pplib.h"
+# include "luapplib/src/pplib.h"
 
 # include "image/epdf.h"
 
@@ -422,12 +422,15 @@
             return 1;
             break;
         case PPNAME:
-            lua_pushstring(L, (const char *) ppname_decoded(object->name));
-            return 1;
+            {
+                ppname * n = ppname_decoded(object->name) ;
+                lua_pushlstring(L, ppname_data(n), ppname_size(n));
+                return 1;
+            }
             break;
         case PPSTRING:
-            lua_pushlstring(L,(const char *) object->string, ppstring_size((void *)object->string));
-            lua_pushboolean(L, ppstring_hex((void *)object->string));
+            lua_pushlstring(L, ppstring_data(object->string), ppstring_size(object->string));
+            lua_pushboolean(L, ppstring_hex(object->string));
             return 2;
             break;
         case PPARRAY:
@@ -527,8 +530,8 @@
             if (index < d->dictionary->size) {
                 ppobj *object = ppdict_at(d->dictionary,index);
                 if (object != NULL) {
-                    ppname key = ppdict_key(d->dictionary,index);
-                    lua_pushstring(L,(const char *) key);
+                    ppname * key = ppname_decoded(ppdict_key(d->dictionary,index));
+                    lua_pushlstring(L, ppname_data(key), ppname_size(key));
                     lua_pushinteger(L,(int) object->type);
                     return 2 + pushvalue(L,object);
                 }
@@ -555,8 +558,8 @@
             if (index < d->size) {
                 ppobj *object = ppdict_at(d,index);
                 if (object != NULL) {
-                    ppname key = ppdict_key(d,index);
-                    lua_pushstring(L,(const char *) key);
+                    ppname * key = ppname_decoded(ppdict_key(d,index));
+                    lua_pushlstring(L, ppname_data(key), ppname_size(key));
                     lua_pushinteger(L,(int) object->type);
                     return 2 + pushvalue(L,object);
                 }
@@ -656,8 +659,8 @@
         for (i=0;i<d->dictionary->size;i++) {
             ppobj *object = ppdict_at(d->dictionary,i);
             if (object != NULL) {
-                ppname key = ppdict_key(d->dictionary,i);
-                lua_pushstring(L,(const char *) key);
+                ppname * key = ppname_decoded(ppdict_key(d->dictionary,i));
+                lua_pushlstring(L, ppname_data(key), ppname_size(key));
                 /* table key */
                 pdfelib_totable(L,object,flat);
                 /* table key { type, [value], [extra], [more] } */
@@ -874,7 +877,7 @@
     if (! memstream) {
         luaL_error(L, "no room for <pdfe> stream");
     }
-    memcpy(memstream, docstream, (streamsize + 1));
+    memcpy(memstream, docstream, streamsize);
     memstream[streamsize]='\0';
     if (lua_gettop(L) == 2) {
         /* we stay at the lua end */
@@ -1011,7 +1014,6 @@
     return 1;
 }
 
-
 static int pdfelib_getversion(lua_State * L)
 {
     pdfe_document *p = check_isdocument(L, 1);
@@ -1321,10 +1323,10 @@
 static int pdfelib_getstring(lua_State * L)
 {
     if (lua_gettop(L) > 1) {
-        ppstring value = NULL;
+        ppstring * value = NULL;
         pdfelib_get_value_direct(ppdict_rget_string,pparray_rget_string);
         if (value != NULL) {
-            lua_pushstring(L,(const char *) value);
+            lua_pushlstring(L, ppstring_data(value), ppstring_size(value));
             return 1;
         }
     }
@@ -1376,10 +1378,11 @@
 static int pdfelib_getname(lua_State * L)
 {
     if (lua_gettop(L) > 1) {
-        ppname value = NULL;
+        ppname * value = NULL;
         pdfelib_get_value_direct(ppdict_rget_name,pparray_rget_name);
         if (value != NULL) {
-            lua_pushstring(L,(const char *) ppname_decoded(value));
+            value = ppname_decoded(value) ;
+            lua_pushlstring(L, ppname_data(value), ppname_size(value));
             return 1;
         }
     }
@@ -1446,10 +1449,13 @@
             lua_pushnumber(L, object->number);
             break;
         case PPNAME:
-            lua_pushstring(L, (const char *) ppname_decoded(object->name));
+            {
+                ppname * n = ppname_decoded(object->name) ;
+                lua_pushlstring(L, ppname_data(n), ppname_size(n));
+            }
             break;
         case PPSTRING:
-            lua_pushlstring(L,(const char *) object->string, ppstring_size((void *)object->string));
+            lua_pushlstring(L, ppstring_data(object->string), ppstring_size(object->string));
             break;
         case PPARRAY:
             return pusharrayonly(L, object->array);

Modified: trunk/Build/source/texk/web2c/luatexdir/lua/lpdfscannerlib.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/lua/lpdfscannerlib.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/lua/lpdfscannerlib.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -78,7 +78,7 @@
 #include <lauxlib.h>
 #include <lualib.h>
 
-#include "luapplib/pplib.h"
+#include "luapplib/src/pplib.h"
 
 #include <lua/luatex-api.h>
 

Modified: trunk/Build/source/texk/web2c/luatexdir/lua/luainit.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/lua/luainit.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/lua/luainit.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -677,6 +677,7 @@
         /*tex library not found in this path */
         return 1;
     }
+    recorder_record_input(filename);
     if (luaL_loadfile(L, filename) != 0) {
         luaL_error(L, "error loading module %s from file %s:\n\t%s",
             lua_tostring(L, 1), filename, lua_tostring(L, -1));
@@ -714,6 +715,7 @@
             /*tex library not found in this path */
             return 1;
         }
+        recorder_record_input(filename);
         extensionless = strdup(filename);
         if (!extensionless) {
             /*tex allocation failure */

Modified: trunk/Build/source/texk/web2c/luatexdir/lua/luatex-api.h
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/lua/luatex-api.h	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/lua/luatex-api.h	2020-02-15 12:45:08 UTC (rev 53789)
@@ -155,7 +155,7 @@
 extern int luaopen_font(lua_State * L);
 extern int luaopen_vf(lua_State * L);
 extern int font_parameters_to_lua(lua_State * L, int f);
-extern int font_to_lua(lua_State * L, int f);
+extern int font_to_lua(lua_State * L, int f, int usecache);
 extern int font_from_lua(lua_State * L, int f); /* return is boolean */
 extern int characters_from_lua(lua_State * L, int f); /* return is boolean */
 

Deleted: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/README-win.md
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/README-win.md	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/README-win.md	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,53 +0,0 @@
-# Building Harfbuzz and _luaharfbuzz_ on Windows
-
-## Building Harfbuzz
-
-### Prerequisites
-* [Visual Studio Community Edition](https://www.visualstudio.com/vs/community/)
-* C++ Support for Visual Studio (See [here](http://stackoverflow.com/questions/31953769/visual-studio-doesnt-have-cl-exe))
-
-### Building
-* Download the Harfbuzz source for win32 from the [releases pages](https://github.com/behdad/harfbuzz/releases) (look for a zip file that ends with _-win32_, for e.g. _harfbuzz-1.4.2-win32.zip_), and unzip it.
-* Launch the Visual Studio developer prompt for the platform you want to target. This is very important. For e.g, on my 64-bit system, I am using _VS2015 x64 Native Tools Command Prompt_
-* Navigate to the _win32_ folder in the Harfbuzz source tree and do `nmake /f Makefile.vc CFG=release`
-* This should generate _harfbuzz.lib_ and _harfbuzz-vs14.dll_.
-
-## Copying Harfbuzz headers and DLL to the right locations
-The Harfbuzz headers and DLLs must be copied to the right locations, for Lua and LuaRocks to be able to find them during installation and running:
-
-* Copy all the Harfbuzz header (_src/*.h_) files to _C:\external\include\harfbuzz_. This is where LuaRocks will look for them by default. Make sure the header files are in the _harfbuzz_ sub-directory under _C:\external\include_, otherwise it will not work.
-* Copy _harfbuzz.lib_ and _harfbuzz-vs14.dll_ to the folder _C:\external\lib_. This is where LuaRocks will look for them by default.
-* Copy  _harfbuzz-vs14.dll_ to _C:\Windows\System32_. This is where running programs can locate the Harfbuzz DLL.
-
-## Installing Lua and LuaRocks
-It is highly recommended that you install Lua 5.2 and LuaRocks in a sandboxed environment on your machine. [Hererocks] makes it dead simple to do on Windows. Make sure you have installed Python first. On my system, I just did `chocolatey install python`, but you can use an alternate method and skip running that command below.
-
-[Hererocks]:https://github.com/mpeterv/hererocks
-
-```
-chocolatey install python
-wget https://raw.githubusercontent.com/mpeterv/hererocks/latest/hererocks.py
-python hererocks.py lua52 -l5.2 -rlatest
-source lua52/bin/activate
-```
-## Install _luaharfbuzz_
-If you followed the steps in the previous sections, and have a sandboxed Lua installation, which the Lua program on %PATH%, then doing the following should just work:
-
-```
-C:\> luarocks install luaharfbuzz
-```
-
-This will download the _luaharfbuzz_ source, compile the C modules, link them against Lua and Harfbuzz, and install it in the right location.
-
-## Test
-Test whether the installation was successful by loading _luaharfbuzz_ in the Lua REPL
-
-```
-C:\> lua
-Lua 5.2.4  Copyright (C) 1994-2015 Lua.org, PUC-Rio
-> hb = require("harfbuzz")
-> print(hb.version())
-1.4.1
->
-```
-

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/README.md
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/README.md	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/README.md	2020-02-15 12:45:08 UTC (rev 53789)
@@ -19,10 +19,17 @@
 Pango, Firefox, Chromium, XeTeX and LibreOffice.
 
 _luaharfbuzz_ provides bindings for the most common types in Harfbuzz. The
-initial motivation for building it is to use Harfbuzz with the [LuaTeX]
+initial motivation for building it was to use Harfbuzz with the [LuaTeX]
 typesetting system. However, the module isn’t tied to LuaTeX in any way. It
 can be used with any Lua codebase.
 
+luaharfbuzz is currently being used inside [HarfTeX], a TeX engine built
+on top of LuaTeX and designed to use Harfbuzz for shaping text. For more
+details read this TUGboat journal article titled [Bringing world scripts to LuaTeX: The
+HarfBuzz experiment][tugboat-article]
+
+[HarfTeX]: https://github.com/khaledhosny/harftex
+[tugboat-article]: https://tug.org/TUGboat/tb40-1/tb124hosny-harfbuzz.pdf
 [LuaTeX]:luatex.org
 
 ## Installing Harfbuzz
@@ -43,9 +50,6 @@
 apt-get install libharfbuzz0b libharfbuzz-dev
 ```
 
-#### Windows
-Getting the whole setup running on Windows is very tedious, so all instructions are in their own file [README-win.md](https://github.com/deepakjois/luaharfbuzz/blob/master/README-win.md).
-
 #### Other Platforms
 _Send a pull request if you want to include specific instructions to install
 Harfbuzz on your preferred platform._
@@ -139,6 +143,8 @@
 
 * [Busted](http://olivinelabs.com/busted/) – `luarocks install busted`
 * [luacheck](luacheck.readthedocs.org) – `luarocks install luacheck`
+* [luacov](https://keplerproject.github.io/luacov/) – `luarocks install luacov`
+* [ldoc](https://stevedonovan.github.io/ldoc/) – `luarocks install ldoc`
 
 Run the test suite:
 ```
@@ -150,5 +156,10 @@
 make lint
 ```
 
+Generate documentation from sources:
+```
+make doc
+```
+
 ## Contact
 Open a Github issue, or email me at <deepak.jois at gmail.com>.

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/config.ld
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/config.ld	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/config.ld	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,6 +1,6 @@
 project = 'luaharfbuzz'
 description = 'Lua bindings to Harfbuzz'
-full_description = 'The documentation is available on the @{https://github.com/deepakjois/luaharfbuzz/wiki|wiki}'
+full_description = 'The documentation is available on the @{https://github.com/ufytex/luaharfbuzz/wiki|wiki}'
 use_markdown_titles = true
 backtick_references = false
 title = 'luaharfbuzz Documentation'

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/core_types.lua.html
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/core_types.lua.html	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/core_types.lua.html	2020-02-15 12:45:08 UTC (rev 53789)
@@ -101,7 +101,7 @@
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2019-04-13 17:03:03 </i>
+<i style="float:right;">Last updated 2019-07-31 18:39:39 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

Deleted: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/custom_callbacks.lua.html
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/custom_callbacks.lua.html	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/custom_callbacks.lua.html	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,85 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
-   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html>
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
-<head>
-    <title>luaharfbuzz Documentation</title>
-    <link rel="stylesheet" href="../ldoc.css" type="text/css" />
-</head>
-<body>
-
-<div id="container">
-
-<div id="product">
-	<div id="product_logo"></div>
-	<div id="product_name"><big><b></b></big></div>
-	<div id="product_description"></div>
-</div> <!-- id="product" -->
-
-
-<div id="main">
-
-
-<!-- Menu -->
-
-<div id="navigation">
-<br/>
-<h1>luaharfbuzz</h1>
-
-
-
-
-<h2>Examples</h2>
-<ul class="nowrap">
-  <li><a href="../examples/core_types.lua.html">core_types.lua</a></li>
-  <li><strong>custom_callbacks.lua</strong></li>
-  <li><a href="../examples/harfbuzz_setup.lua.html">harfbuzz_setup.lua</a></li>
-  <li><a href="../examples/ot_font_loader.lua.html">ot_font_loader.lua</a></li>
-  <li><a href="../examples/package_path_searcher.lua.html">package_path_searcher.lua</a></li>
-</ul>
-<h2>Modules</h2>
-<ul class="nowrap">
-  <li><a href="../index.html">harfbuzz</a></li>
-</ul>
-
-</div>
-
-<div id="content">
-
-    <h2>custom_callbacks.lua</h2>
-<pre>
-<span class="comment">-- Switch off some callbacks
-</span>callback.register(<span class="string">"hyphenate"</span>, <span class="keyword">false</span>)
-callback.register(<span class="string">"ligaturing"</span>, <span class="keyword">false</span>)
-callback.register(<span class="string">"kerning"</span>, <span class="keyword">false</span>)
-
-<span class="comment">-- Add debug statements to some callbacks
-</span>callback.register(<span class="string">"post_linebreak_filter"</span>, <span class="keyword">function</span>()
-  texio.write_nl(<span class="string">"POST_LINEBREAK"</span>)
-  <span class="keyword">return</span> <span class="keyword">true</span>
-<span class="keyword">end</span>)
-
-callback.register(<span class="string">"hpack_filter"</span>, <span class="keyword">function</span>()
-  texio.write_nl(<span class="string">"HPACK"</span>)
-  <span class="keyword">return</span> <span class="keyword">true</span>
-<span class="keyword">end</span>)
-
-callback.register(<span class="string">"vpack_filter"</span>, <span class="keyword">function</span>()
-  texio.write_nl(<span class="string">"VPACK"</span>)
-  <span class="keyword">return</span> <span class="keyword">true</span>
-<span class="keyword">end</span>)
-
-callback.register(<span class="string">"buildpage_filter"</span>, <span class="keyword">function</span>(extrainfo)
-  texio.write_nl(<span class="string">"BUILDPAGE_FILTER "</span>..extrainfo)
-<span class="keyword">end</span>)</pre>
-
-
-</div> <!-- id="content" -->
-</div> <!-- id="main" -->
-<div id="about">
-<i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.5</a></i>
-<i style="float:right;">Last updated 2016-08-31 21:59:58 </i>
-</div> <!-- id="about" -->
-</div> <!-- id="container" -->
-</body>
-</html>

Deleted: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/harfbuzz_setup.lua.html
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/harfbuzz_setup.lua.html	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/harfbuzz_setup.lua.html	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,231 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
-   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html>
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
-<head>
-    <title>luaharfbuzz Documentation</title>
-    <link rel="stylesheet" href="../ldoc.css" type="text/css" />
-</head>
-<body>
-
-<div id="container">
-
-<div id="product">
-	<div id="product_logo"></div>
-	<div id="product_name"><big><b></b></big></div>
-	<div id="product_description"></div>
-</div> <!-- id="product" -->
-
-
-<div id="main">
-
-
-<!-- Menu -->
-
-<div id="navigation">
-<br/>
-<h1>luaharfbuzz</h1>
-
-
-
-
-<h2>Examples</h2>
-<ul class="nowrap">
-  <li><a href="../examples/core_types.lua.html">core_types.lua</a></li>
-  <li><a href="../examples/custom_callbacks.lua.html">custom_callbacks.lua</a></li>
-  <li><strong>harfbuzz_setup.lua</strong></li>
-  <li><a href="../examples/ot_font_loader.lua.html">ot_font_loader.lua</a></li>
-  <li><a href="../examples/package_path_searcher.lua.html">package_path_searcher.lua</a></li>
-</ul>
-<h2>Modules</h2>
-<ul class="nowrap">
-  <li><a href="../index.html">harfbuzz</a></li>
-</ul>
-
-</div>
-
-<div id="content">
-
-    <h2>harfbuzz_setup.lua</h2>
-<pre>
-<span class="comment">-- Allow external Lua modules to be loaded.
-</span><span class="global">dofile</span> <span class="string">'package_path_searcher.lua'</span>
-
-<span class="comment">-- Attach a OpenType font loader to define_font callback.
-</span><span class="global">require</span> <span class="string">'ot_font_loader'</span>
-
-<span class="comment">-- Disable some callbacks, and attach debug logging to others.
-</span><span class="global">require</span> <span class="string">'custom_callbacks'</span>
-
-<span class="comment">-- List all callbacks
-</span><span class="keyword">local</span> serpent = <span class="global">require</span> <span class="string">'serpent'</span>
-texio.write_nl(serpent.block(callback.list()))
-
-<span class="comment">-- Load luaharfbuzz
-</span><span class="keyword">local</span> harfbuzz = <span class="global">require</span> <span class="string">'harfbuzz'</span>
-
-<span class="keyword">local</span> lt_to_hb_dir = { TLT = <span class="string">"ltr"</span>, TRT = <span class="string">"rtl"</span> }
-<span class="comment">-- local hb_to_lt_dir = { ltr = "TLT", rtl = "TRT" }
-</span>
-<span class="keyword">local</span> <span class="keyword">function</span> upem_to_sp(v,font)
-  <span class="keyword">return</span> <span class="global">math</span>.floor(v / font.units_per_em * font.size)
-<span class="keyword">end</span>
-
-<span class="comment">-- Print the contents of a nodelist.
-</span><span class="comment">-- Glyph nodes are printed as UTF-8 characters, while other nodes are printed
-</span><span class="comment">-- by calling node.type on it, along with the subtype of the node.
-</span><span class="keyword">local</span> <span class="keyword">function</span> show_nodes (head, raw)
-  <span class="keyword">local</span> nodes = <span class="string">''</span>
-  <span class="keyword">for</span> item <span class="keyword">in</span> node.traverse(head) <span class="keyword">do</span>
-    <span class="keyword">local</span> i = item.id
-    <span class="keyword">if</span> i == node.id(<span class="string">"glyph"</span>) <span class="keyword">then</span>
-      <span class="keyword">if</span> raw <span class="keyword">then</span> i = <span class="global">string</span>.format(<span class="string">'<glyph %d>'</span>, item.char) <span class="keyword">else</span> i = unicode.utf8.char(item.char) <span class="keyword">end</span>
-    <span class="keyword">else</span>
-      i = <span class="global">string</span>.format(<span class="string">'<%s%s>'</span>, node.<span class="global">type</span>(i), ( item.subtype <span class="keyword">and</span> (<span class="string">"("</span>.. item.subtype .. <span class="string">")"</span>) <span class="keyword">or</span> <span class="string">''</span>))
-    <span class="keyword">end</span>
-    nodes = nodes .. i .. <span class="string">' '</span>
-  <span class="keyword">end</span>
-  texio.write_nl(nodes)
-  <span class="keyword">return</span> <span class="keyword">true</span>
-<span class="keyword">end</span>
-
-<span class="comment">-- Process a paragraph nodelist and shape it with Harfbuzz.
-</span><span class="comment">-- Only works for the most simple paragraphs. Check the assertions in the code
-</span><span class="comment">-- to understand what kind of nodes the shaping routine is expecting at
-</span><span class="comment">-- any point.
-</span><span class="keyword">local</span> <span class="keyword">function</span> process_nodes(head)
-  <span class="comment">-- Pointer to traverse head nodelist
-</span>  <span class="keyword">local</span> head_slider = head
-
-  <span class="comment">-- First node is a local_par
-</span>  <span class="global">assert</span>(head_slider.id == node.id(<span class="string">"local_par"</span>), <span class="string">"local_par expected"</span>)
-
-  <span class="comment">-- Get direction
-</span>  <span class="keyword">local</span> dir = head_slider.dir
-  texio.write_nl(<span class="string">"direction is: "</span>..dir)
-
-
-  <span class="comment">-- Second node is indentation
-</span>  head_slider = head_slider.<span class="global">next</span>
-  <span class="global">assert</span>(head_slider.id == node.id(<span class="string">"hlist"</span>) <span class="keyword">and</span> head_slider.subtype == <span class="number">3</span>, <span class="string">"parindent hlist expected"</span>)
-
-  <span class="comment">-- Check if font can be shaped by Harfbuzz
-</span>  <span class="keyword">local</span> fontid = head_slider.<span class="global">next</span>.font
-  texio.write_nl(<span class="string">"fontid is "</span>..fontid)
-  <span class="keyword">local</span> font = font.getfont(fontid)
-  <span class="keyword">if</span> <span class="keyword">not</span> font.harfbuzz <span class="keyword">then</span> <span class="keyword">return</span> head <span class="keyword">end</span>
-  texio.write_nl(<span class="string">"paragraph can be shaped by Harfbuzz"</span>)
-
-  <span class="comment">-- Initialise new head
-</span>  <span class="keyword">local</span> new_head = node.copy_list(head, head_slider.<span class="global">next</span>)
-  <span class="global">assert</span>(node.length(new_head) == <span class="number">2</span>, <span class="string">"expected two nodes in new_head"</span>)
-
-  <span class="comment">-- Pointer to traverse new heade nodelist
-</span>  <span class="keyword">local</span> new_head_slider = node.slide(new_head)
-
-  <span class="comment">-- Build text
-</span>  <span class="keyword">local</span> codepoints = { }
-  <span class="keyword">while</span> head_slider.<span class="global">next</span>.id ~= node.id(<span class="string">"penalty"</span>) <span class="keyword">do</span>
-    head_slider = head_slider.<span class="global">next</span>
-    <span class="keyword">if</span> head_slider.id == node.id(<span class="string">"glyph"</span>) <span class="keyword">then</span>
-      <span class="global">table</span>.insert(codepoints, head_slider.char)
-    <span class="keyword">elseif</span> head_slider.id == node.id(<span class="string">"glue"</span>) <span class="keyword">and</span> head_slider.subtype == <span class="number">13</span> <span class="keyword">then</span>
-      <span class="global">table</span>.insert(codepoints, <span class="number">0x20</span>)
-    <span class="keyword">else</span>
-      <span class="global">error</span>(<span class="global">string</span>.format(<span class="string">"Cant handle node of type %s, subtype %s"</span>, node.<span class="global">type</span>(head_slider.id), <span class="global">tostring</span>(head_slider.subtype)))
-    <span class="keyword">end</span>
-  <span class="keyword">end</span>
-
-  <span class="comment">-- Initialise new tail at the last penalty node.
-</span>  <span class="keyword">local</span> new_tail = head_slider.<span class="global">next</span>
-
-  <span class="comment">-- Skip over penalty node
-</span>  head_slider = head_slider.<span class="global">next</span>.<span class="global">next</span>
-
-  <span class="comment">-- Last node is a \parfillskip
-</span>  <span class="global">assert</span>(head_slider.id == node.id(<span class="string">"glue"</span>) <span class="keyword">and</span> head_slider.subtype == <span class="number">15</span>, <span class="string">"\\parfillskip expected"</span>)
-  <span class="global">assert</span>(<span class="keyword">not</span> head_slider.<span class="global">next</span>, <span class="string">"Expected this to be the last node."</span>)
-
-  <span class="comment">-- Shape text
-</span>  <span class="keyword">local</span> buf = harfbuzz.Buffer.new()
-  buf:set_cluster_level(harfbuzz.Buffer.HB_BUFFER_CLUSTER_LEVEL_CHARACTERS)
-  buf:add_codepoints(codepoints)
-  harfbuzz.shape(font.harfbuzz.font,buf, { direction = lt_to_hb_dir[dir] })
-
-  <span class="comment">-- Create new nodes from shaped text
-</span>  <span class="keyword">if</span> dir == <span class="string">'TRT'</span> <span class="keyword">then</span> buf:reverse() <span class="keyword">end</span>
-  <span class="keyword">local</span> glyphs = buf:get_glyph_infos_and_positions()
-
-  <span class="keyword">for</span> _, v <span class="keyword">in</span> <span class="global">ipairs</span>(glyphs) <span class="keyword">do</span>
-    <span class="keyword">local</span> n,k <span class="comment">-- Node and (optional) Kerning
-</span>    <span class="keyword">local</span> char = font.backmap[v.codepoint]
-    <span class="keyword">if</span> codepoints[v.cluster+<span class="number">1</span>] == <span class="number">0x20</span> <span class="keyword">then</span>
-      <span class="global">assert</span>(char == <span class="number">0x20</span> <span class="keyword">or</span> char == <span class="number">0xa0</span>, <span class="string">"Expected char to be 0x20 or 0xa0"</span>)
-      n = node.new(<span class="string">"glue"</span>)
-      n.subtype = <span class="number">0</span>
-      n.width = font.parameters.space
-      n.stretch = font.parameters.space_stretch
-      n.shrink = font.parameters.space_shrink
-      new_head_slider.<span class="global">next</span> = n
-    <span class="keyword">else</span>
-      <span class="comment">-- Create glyph node
-</span>      n = node.new(<span class="string">"glyph"</span>)
-      n.font = fontid
-      n.char = char
-      n.subtype = <span class="number">1</span>
-
-      <span class="comment">-- Set offsets from Harfbuzz data
-</span>      n.yoffset = upem_to_sp(v.y_offset, font)
-      n.xoffset = upem_to_sp(v.x_offset, font)
-      <span class="keyword">if</span> dir == <span class="string">'TRT'</span> <span class="keyword">then</span> n.xoffset = n.xoffset * -<span class="number">1</span> <span class="keyword">end</span>
-
-      <span class="comment">-- Adjust kerning if Harfbuzz’s x_advance does not match glyph width
-</span>      <span class="keyword">local</span> x_advance = upem_to_sp(v.x_advance, font)
-      <span class="keyword">if</span>  <span class="global">math</span>.abs(x_advance - n.width) > <span class="number">1</span> <span class="keyword">then</span> <span class="comment">-- needs kerning
-</span>        k = node.new(<span class="string">"kern"</span>)
-        k.kern = (x_advance - n.width)
-      <span class="keyword">end</span>
-
-      <span class="comment">-- Insert glyph node into new list,
-</span>      <span class="comment">-- adjusting for direction and kerning.
-</span>      <span class="keyword">if</span> k <span class="keyword">then</span>
-        <span class="keyword">if</span> dir == <span class="string">'TRT'</span> <span class="keyword">then</span> <span class="comment">-- kerning goes before glyph
-</span>          k.<span class="global">next</span> = n
-          new_head_slider.<span class="global">next</span> = k
-        <span class="keyword">else</span> <span class="comment">-- kerning goes after glyph
-</span>          n.<span class="global">next</span> = k
-          new_head_slider.<span class="global">next</span> = n
-        <span class="keyword">end</span>
-      <span class="keyword">else</span> <span class="comment">-- no kerning
-</span>        new_head_slider.<span class="global">next</span> = n
-      <span class="keyword">end</span>
-    <span class="keyword">end</span>
-    new_head_slider = node.slide(new_head_slider)
-  <span class="keyword">end</span>
-
-  new_head_slider.<span class="global">next</span> = new_tail
-  texio.write_nl(<span class="string">"No. of nodes after shaping: "</span>..node.length(new_head))
-  show_nodes(new_head, <span class="keyword">true</span>)
-  <span class="keyword">return</span> new_head
-<span class="keyword">end</span>
-
-<span class="comment">-- Callback function
-</span><span class="keyword">local</span> <span class="keyword">function</span> show_and_process_nodes(head)
-  texio.write_nl(<span class="string">"No. of nodes: "</span>..node.length(head))
-  show_nodes(head)
-  <span class="keyword">return</span> process_nodes(head)
-<span class="keyword">end</span>
-
-<span class="comment">-- Register shaping callback
-</span>callback.register(<span class="string">"pre_linebreak_filter"</span>, show_and_process_nodes)</pre>
-
-
-</div> <!-- id="content" -->
-</div> <!-- id="main" -->
-<div id="about">
-<i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.5</a></i>
-<i style="float:right;">Last updated 2016-08-31 21:59:58 </i>
-</div> <!-- id="about" -->
-</div> <!-- id="container" -->
-</body>
-</html>

Deleted: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/ot_font_loader.lua.html
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/ot_font_loader.lua.html	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/ot_font_loader.lua.html	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,139 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
-   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html>
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
-<head>
-    <title>luaharfbuzz Documentation</title>
-    <link rel="stylesheet" href="../ldoc.css" type="text/css" />
-</head>
-<body>
-
-<div id="container">
-
-<div id="product">
-	<div id="product_logo"></div>
-	<div id="product_name"><big><b></b></big></div>
-	<div id="product_description"></div>
-</div> <!-- id="product" -->
-
-
-<div id="main">
-
-
-<!-- Menu -->
-
-<div id="navigation">
-<br/>
-<h1>luaharfbuzz</h1>
-
-
-
-
-<h2>Examples</h2>
-<ul class="nowrap">
-  <li><a href="../examples/core_types.lua.html">core_types.lua</a></li>
-  <li><a href="../examples/custom_callbacks.lua.html">custom_callbacks.lua</a></li>
-  <li><a href="../examples/harfbuzz_setup.lua.html">harfbuzz_setup.lua</a></li>
-  <li><strong>ot_font_loader.lua</strong></li>
-  <li><a href="../examples/package_path_searcher.lua.html">package_path_searcher.lua</a></li>
-</ul>
-<h2>Modules</h2>
-<ul class="nowrap">
-  <li><a href="../index.html">harfbuzz</a></li>
-</ul>
-
-</div>
-
-<div id="content">
-
-    <h2>ot_font_loader.lua</h2>
-<pre>
-<span class="keyword">local</span> harfbuzz = <span class="global">require</span>(<span class="string">'harfbuzz'</span>)
-
-<span class="comment">-- Load OpenType font.
-</span><span class="comment">-- https://tug.org/TUGboat/tb33-1/tb103isambert.pdf
-</span><span class="keyword">local</span> <span class="keyword">function</span> read_font (name, size, fontid)
-  <span class="keyword">if</span> size < <span class="number">0</span> <span class="keyword">then</span>
-    size = size * tex.sp(<span class="string">"10pt"</span>) / -<span class="number">1000</span>
-  <span class="keyword">end</span>
-
-  <span class="comment">-- Load file using fontloader.open
-</span>  <span class="keyword">local</span> f = fontloader.open (name)
-  <span class="keyword">local</span> fonttable = fontloader.to_table(f)
-  fontloader.close(f)
-
-  <span class="keyword">local</span> metrics = {
-    name = fonttable.fontname,
-    fullname = fonttable.fontname..fontid,
-    psname = fonttable.fontname,
-    <span class="global">type</span> = <span class="string">"real"</span>,
-    filename = name,
-    format = <span class="global">string</span>.match(<span class="global">string</span>.lower(name), <span class="string">"otf$"</span>) <span class="keyword">and</span> <span class="string">"opentype"</span> <span class="keyword">or</span> <span class="global">string</span>.match(<span class="global">string</span>.lower(name), <span class="string">"ttf$"</span>) <span class="keyword">and</span> <span class="string">"truetype"</span>,
-    embedding = <span class="string">'subset'</span>,
-    size = size,
-    designsize = fonttable.design_size*<span class="number">6553.6</span>,
-    cidinfo = fonttable.cidinfo,
-    units_per_em = fonttable.units_per_em
-  }
-
-  <span class="comment">-- Scaling for font metrics
-</span>  <span class="keyword">local</span> mag = size / fonttable.units_per_em
-
-  <span class="comment">-- Find glyph for 0x20, and get width for spacing glue.
-</span>  <span class="keyword">local</span> space_glyph = fonttable.map.map[<span class="number">0x20</span>]
-  <span class="keyword">local</span> space_glyph_table = fonttable.glyphs[space_glyph]
-  <span class="keyword">local</span> space_glyph_width = space_glyph_table.width * mag
-
-  metrics.parameters = {
-    slant = <span class="number">0</span>,
-    space = space_glyph_width,
-    space_stretch = <span class="number">1.5</span> * space_glyph_width,
-    space_shrink = <span class="number">0.5</span> * space_glyph_width,
-    x_height = fonttable.pfminfo.os2_xheight * mag,
-    quad = <span class="number">1.0</span> * size,
-    extra_space = <span class="number">0</span>
-  }
-
-  <span class="comment">-- Save backmap in TeX font, so we can get char code from glyph index
-</span>  <span class="comment">-- obtainded from Harfbuzz
-</span>  metrics.backmap = fonttable.map.backmap
-
-  metrics.characters = { }
-  <span class="keyword">for</span> char, glyph <span class="keyword">in</span> <span class="global">pairs</span>(fonttable.map.map) <span class="keyword">do</span>
-    <span class="keyword">local</span> glyph_table = fonttable.glyphs[glyph]
-    metrics.characters[char] = {
-      index = glyph,
-      width = glyph_table.width * mag,
-      name = glyph_table.name,
-    }
-    <span class="keyword">if</span> glyph_table.boundingbox[<span class="number">4</span>] <span class="keyword">then</span>
-      metrics.characters[char].height = glyph_table.boundingbox[<span class="number">4</span>] * mag
-    <span class="keyword">end</span>
-    <span class="keyword">if</span> glyph_table.boundingbox[<span class="number">2</span>] <span class="keyword">then</span>
-      metrics.characters[char].depth = -glyph_table.boundingbox[<span class="number">2</span>] * mag
-    <span class="keyword">end</span>
-  <span class="keyword">end</span>
-
-  <span class="comment">-- Store Harfbuzz data in the font to retrieve it in the shaping routine.
-</span>  <span class="keyword">local</span> face = harfbuzz.Face.new(name)
-  metrics.harfbuzz = {
-    face = face,
-    font = harfbuzz.Font.new(face)
-  }
-
-  <span class="keyword">return</span> metrics
-<span class="keyword">end</span>
-
-<span class="comment">-- Register OpenType font loader in define_font callback.
-</span>callback.register(<span class="string">'define_font'</span>, read_font, <span class="string">"font loader"</span>)</pre>
-
-
-</div> <!-- id="content" -->
-</div> <!-- id="main" -->
-<div id="about">
-<i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.5</a></i>
-<i style="float:right;">Last updated 2016-08-31 21:59:58 </i>
-</div> <!-- id="about" -->
-</div> <!-- id="container" -->
-</body>
-</html>

Deleted: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/package_path_searcher.lua.html
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/package_path_searcher.lua.html	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/examples/package_path_searcher.lua.html	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,104 +0,0 @@
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
-   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html>
-<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
-<head>
-    <title>luaharfbuzz Documentation</title>
-    <link rel="stylesheet" href="../ldoc.css" type="text/css" />
-</head>
-<body>
-
-<div id="container">
-
-<div id="product">
-	<div id="product_logo"></div>
-	<div id="product_name"><big><b></b></big></div>
-	<div id="product_description"></div>
-</div> <!-- id="product" -->
-
-
-<div id="main">
-
-
-<!-- Menu -->
-
-<div id="navigation">
-<br/>
-<h1>luaharfbuzz</h1>
-
-
-
-
-<h2>Examples</h2>
-<ul class="nowrap">
-  <li><a href="../examples/core_types.lua.html">core_types.lua</a></li>
-  <li><a href="../examples/custom_callbacks.lua.html">custom_callbacks.lua</a></li>
-  <li><a href="../examples/harfbuzz_setup.lua.html">harfbuzz_setup.lua</a></li>
-  <li><a href="../examples/ot_font_loader.lua.html">ot_font_loader.lua</a></li>
-  <li><strong>package_path_searcher.lua</strong></li>
-</ul>
-<h2>Modules</h2>
-<ul class="nowrap">
-  <li><a href="../index.html">harfbuzz</a></li>
-</ul>
-
-</div>
-
-<div id="content">
-
-    <h2>package_path_searcher.lua</h2>
-<pre>
-<span class="comment">-- Allows Lua modules to be loaded from package.path and package.cpath.
-</span><span class="comment">--
-</span><span class="comment">-- This behavior is overridden by default in LuaTeX. This module reverts the
-</span><span class="comment">-- packaging searching logic to use package.path and package.cpath first,
-</span><span class="comment">-- failing which it tries to use the overridden loading logic (which uses
-</span><span class="comment">-- kpse).
-</span><span class="comment">--
-</span><span class="comment">-- Package Loading References:
-</span><span class="comment">-- 1. http://www.lua.org/manual/5.2/manual.html#pdf-package.searchers
-</span><span class="comment">-- 2. LuaTeX Manual, Section 3.2, Lua behavior
-</span>
-<span class="keyword">local</span> make_loader = <span class="keyword">function</span>(path, pos,loadfunc)
-  <span class="keyword">local</span> default_loader = <span class="global">package</span>.searchers[pos]
-  <span class="keyword">local</span> loader = <span class="keyword">function</span>(name)
-    <span class="keyword">local</span> file = <span class="global">package</span>.searchpath(name,path)
-    <span class="keyword">if</span> <span class="keyword">not</span> file <span class="keyword">then</span>
-      <span class="keyword">local</span> msg = <span class="string">"\n\t[lualoader] Search failed"</span>
-      <span class="keyword">local</span> ret = default_loader(name)
-      <span class="keyword">if</span> <span class="global">type</span>(ret) == <span class="string">"string"</span> <span class="keyword">then</span>
-        <span class="keyword">return</span> msg ..ret
-        <span class="keyword">elseif</span> <span class="global">type</span>(ret) == <span class="string">"nil"</span> <span class="keyword">then</span>
-          <span class="keyword">return</span> msg
-        <span class="keyword">else</span>
-          <span class="keyword">return</span> ret
-        <span class="keyword">end</span>
-      <span class="keyword">end</span>
-      <span class="keyword">local</span> loader,err = loadfunc(file)
-      <span class="keyword">if</span> <span class="keyword">not</span> loader <span class="keyword">then</span>
-        <span class="keyword">return</span> <span class="string">"\n\t[lualoader] Loading error:\n\t"</span>..err
-      <span class="keyword">end</span>
-      <span class="keyword">return</span> loader
-  <span class="keyword">end</span>
-    <span class="global">package</span>.searchers[pos] = loader
-<span class="keyword">end</span>
-
-<span class="keyword">local</span> binary_loader = <span class="keyword">function</span>(file)
-  <span class="keyword">local</span> base = file:match(<span class="string">"/([^%.]+)%.[%w]+$"</span>)
-  <span class="keyword">local</span> symbol = base:gsub(<span class="string">"%."</span>,<span class="string">"_"</span>)
-  <span class="keyword">return</span> <span class="global">package</span>.loadlib(file, <span class="string">"luaopen_"</span>..symbol)
-<span class="keyword">end</span>
-
-make_loader(<span class="global">package</span>.path,<span class="number">2</span>,<span class="global">loadfile</span>)
-make_loader(<span class="global">package</span>.cpath,<span class="number">3</span>, binary_loader)</pre>
-
-
-</div> <!-- id="content" -->
-</div> <!-- id="main" -->
-<div id="about">
-<i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.5</a></i>
-<i style="float:right;">Last updated 2016-08-31 21:59:58 </i>
-</div> <!-- id="about" -->
-</div> <!-- id="container" -->
-</body>
-</html>

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/index.html
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/index.html	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/docs/index.html	2020-02-15 12:45:08 UTC (rev 53789)
@@ -66,9 +66,9 @@
 <p>
 
 <ul>
-    <li><a href="http://github.com/deepakjois/luaharfbuzz/wiki">Wiki</a></li>
-    <li><a href="https://github.com/deepakjois/luaharfbuzz">Source on Github</a></li>
-    <li><a href="https://github.com/deepakjois/luaharfbuzz/blob/master/status/done.txt">API Coverage Status</a></li>
+    <li><a href="http://github.com/ufytex/luaharfbuzz/wiki">Wiki</a></li>
+    <li><a href="https://github.com/ufytex/luaharfbuzz">Source on Github</a></li>
+    <li><a href="https://github.com/ufytex/luaharfbuzz/blob/master/status/done.txt">API Coverage Status</a></li>
 </ul>
 </p>
     <h3>Info:</h3>
@@ -651,7 +651,7 @@
     <li><code>language</code>: A <code>Language</code> object representing the language.</li>
     <li><code>features</code>: features to enable, specified as either of the following.
     <ul>
-        <li>comma-separated list of features. See <a href="https://github.com/deepakjois/luaharfbuzz/wiki/Feature-Strings">feature string syntax reference</a></li>
+        <li>comma-separated list of features. See <a href="https://github.com/ufytex/luaharfbuzz/wiki/Feature-Strings">feature string syntax reference</a></li>
         <li>table of <code>Feature</code> objects</li>
     </ul></li>
 </ul>
@@ -1774,7 +1774,7 @@
     <h3>Parameters:</h3>
     <ul>
         <li><span class="parameter">feature_string</span>
-         See <a href="https://github.com/deepakjois/luaharfbuzz/wiki/Feature-Strings">feature string syntax reference</a>
+         See <a href="https://github.com/ufytex/luaharfbuzz/wiki/Feature-Strings">feature string syntax reference</a>
         </li>
     </ul>
 
@@ -2822,7 +2822,7 @@
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2019-05-01 16:42:35 </i>
+<i style="float:right;">Last updated 2019-07-31 18:39:39 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

Added: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/fonts/TwitterColorEmoji-SVGinOT.ttf
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/fonts/TwitterColorEmoji-SVGinOT.ttf
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/fonts/TwitterColorEmoji-SVGinOT.ttf	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/fonts/TwitterColorEmoji-SVGinOT.ttf	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/fonts/TwitterColorEmoji-SVGinOT.ttf
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Deleted: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/luaharfbuzz-1.0.0-1.rockspec
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/luaharfbuzz-1.0.0-1.rockspec	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/luaharfbuzz-1.0.0-1.rockspec	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,51 +0,0 @@
-package = "luaharfbuzz"
-version = "1.0.0-1"
-source = {
-   url = "git://github.com/deepakjois/luaharfbuzz",
-   tag = "v1.0.0"
-}
-description = {
-   summary = "Lua bindings for the Harfbuzz text shaping library",
-   homepage = "https://github.com/deepakjois/luaharfbuzz",
-   license = "MIT",
-   maintainer = "Deepak Jois <deepak.jois at gmail.com>"
-}
-dependencies = {
-   "lua >= 5.2"
-}
-external_dependencies = {
-   HARFBUZZ = {
-      header = "harfbuzz/hb.h"
-   }
-}
-build = {
-   type = "builtin",
-   modules = {
-      harfbuzz = "src/harfbuzz.lua",
-      luaharfbuzz = {
-         incdirs = {
-            "$(HARFBUZZ_INCDIR)/harfbuzz"
-         },
-         libdirs = {
-            "$(HARFBUZZ_LIBDIR)"
-         },
-         libraries = {
-            "harfbuzz"
-         },
-         sources = {
-            "src/luaharfbuzz/luaharfbuzz.c",
-            "src/luaharfbuzz/blob.c",
-            "src/luaharfbuzz/face.c",
-            "src/luaharfbuzz/font.c",
-            "src/luaharfbuzz/buffer.c",
-            "src/luaharfbuzz/feature.c",
-            "src/luaharfbuzz/tag.c",
-            "src/luaharfbuzz/unicode.c",
-            "src/luaharfbuzz/script.c",
-            "src/luaharfbuzz/direction.c",
-            "src/luaharfbuzz/language.c",
-            "src/luaharfbuzz/class_utils.c"
-         }
-      }
-   }
-}

Added: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/luaharfbuzz-1.1.0-1.rockspec
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/luaharfbuzz-1.1.0-1.rockspec	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/luaharfbuzz-1.1.0-1.rockspec	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,46 @@
+package = "luaharfbuzz"
+version = "1.1.0-1"
+source = {
+  url = "git://github.com/ufytex/luaharfbuzz",
+  tag = "v1.1.0"
+}
+description = {
+  summary = "Lua bindings for the Harfbuzz text shaping library",
+  homepage = "https://github.com/ufytex/luaharfbuzz",
+  license = "MIT",
+  maintainer = "Deepak Jois <deepak.jois at gmail.com>"
+}
+dependencies = {
+  "lua >= 5.2"
+}
+build = {
+  type = "builtin",
+  modules = {
+    harfbuzz ="src/harfbuzz.lua",
+    luaharfbuzz= {
+      sources = {
+      "src/luaharfbuzz/luaharfbuzz.c",
+      "src/luaharfbuzz/blob.c",
+      "src/luaharfbuzz/face.c",
+      "src/luaharfbuzz/font.c",
+      "src/luaharfbuzz/buffer.c",
+      "src/luaharfbuzz/feature.c",
+      "src/luaharfbuzz/tag.c",
+      "src/luaharfbuzz/ot.c",
+      "src/luaharfbuzz/unicode.c",
+      "src/luaharfbuzz/script.c",
+      "src/luaharfbuzz/direction.c",
+      "src/luaharfbuzz/language.c",
+      "src/luaharfbuzz/class_utils.c"
+      },
+      libraries = {"harfbuzz"},
+      incdirs = {"$(HARFBUZZ_INCDIR)/harfbuzz"},
+      libdirs = {"$(HARFBUZZ_LIBDIR)"}
+    }
+  }
+}
+external_dependencies = {
+   HARFBUZZ = {
+      header = "harfbuzz/hb.h"
+   }
+}

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/luaharfbuzz-scm-1.rockspec
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/luaharfbuzz-scm-1.rockspec	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/luaharfbuzz-scm-1.rockspec	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,3 +1,4 @@
+rockspec_format = "3.0"
 package = "luaharfbuzz"
 version = "scm-1"
 source = {
@@ -7,7 +8,9 @@
   summary = "Lua bindings for the Harfbuzz text shaping library",
   homepage = "https://github.com/ufytex/luaharfbuzz",
   license = "MIT",
-  maintainer = "Deepak Jois <deepak.jois at gmail.com>"
+  maintainer = "Deepak Jois <deepak.jois at gmail.com>",
+  issues_url = "https://github.com/ufytex/luaharfbuzz/issues",
+  labels = {"unicode", "fonts"}
 }
 dependencies = {
   "lua >= 5.2"

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/spec/buffer_spec.lua
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/spec/buffer_spec.lua	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/spec/buffer_spec.lua	2020-02-15 12:45:08 UTC (rev 53789)
@@ -167,6 +167,61 @@
     b:set_cluster_level(harfbuzz.Buffer.CLUSTER_LEVEL_CHARACTERS)
     assert.are_equal(harfbuzz.Buffer.CLUSTER_LEVEL_CHARACTERS, b:get_cluster_level())
   end)
+
+  it("can get the replacement glyph for invisible characters of the buffer", function()
+    local b = harfbuzz.Buffer.new()
+    assert.are_equal(0, b:get_invisible_glyph())
+  end)
+
+  it("can set the replacement glyph for invisible characters of the buffer", function()
+    local b = harfbuzz.Buffer.new()
+    b:set_invisible_glyph(3)
+    assert.are_equal(3, b:get_invisible_glyph())
+  end)
+
+  it("can get the replacement codepoint of the buffer", function()
+    local b = harfbuzz.Buffer.new()
+    assert.are_equal(0xFFFD, b:get_replacement_codepoint())
+  end)
+
+  it("can set the replacement codepoint of the buffer", function()
+    local b = harfbuzz.Buffer.new()
+    b:set_replacement_codepoint(0xFFFF)
+    assert.are_equal(0xFFFF, b:get_replacement_codepoint())
+    b:add_utf8("\xFF")
+    local glyphs = b:get_glyphs()
+    assert.are_equal(1, #glyphs)
+    assert.are_equal(0xFFFF, glyphs[1].codepoint)
+  end)
+
+  it("can get the flags of the buffer", function()
+    local b = harfbuzz.Buffer.new()
+    assert.are_equal(harfbuzz.Buffer.FLAG_DEFAULT, b:get_flags())
+  end)
+
+  it("can set the flags of the buffer", function()
+    local b = harfbuzz.Buffer.new()
+    b:set_flags(harfbuzz.Buffer.FLAG_DEFAULT | harfbuzz.Buffer.FLAG_BOT)
+    assert.are_equal(harfbuzz.Buffer.FLAG_DEFAULT | harfbuzz.Buffer.FLAG_BOT, b:get_flags())
+  end)
+
+  it("can clear the buffer", function()
+    local b = harfbuzz.Buffer.new()
+    b:add_utf8("abc")
+    b:set_flags(harfbuzz.Buffer.FLAG_DEFAULT | harfbuzz.Buffer.FLAG_BOT)
+    b:clear_contents()
+    assert.are_equal(0, b:get_length())
+    assert.are_equal(harfbuzz.Buffer.FLAG_DEFAULT | harfbuzz.Buffer.FLAG_BOT, b:get_flags())
+  end)
+
+  it("can reset the buffer", function()
+    local b = harfbuzz.Buffer.new()
+    b:add_utf8("abc")
+    b:set_flags(harfbuzz.Buffer.FLAG_DEFAULT | harfbuzz.Buffer.FLAG_BOT)
+    b:reset()
+    assert.are_equal(0, b:get_length())
+    assert.are_equal(harfbuzz.Buffer.FLAG_DEFAULT, b:get_flags())
+  end)
 end)
 
 

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/spec/harfbuzz_spec.lua
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/spec/harfbuzz_spec.lua	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/spec/harfbuzz_spec.lua	2020-02-15 12:45:08 UTC (rev 53789)
@@ -140,12 +140,28 @@
       assert.are_same(layers,f:ot_color_glyph_get_layers(100))
     end)
 
-    it("can check color layers", function()
+    it("can check PNG glyph support", function()
       local f = harfbuzz.Face.new('fonts/notocoloremoji-subset.ttf')
       assert.are_equal(false,face:ot_color_has_png())
       assert.are_equal(true,f:ot_color_has_png())
     end)
 
+    it("can check SVG glyph support", function()
+      local f = harfbuzz.Face.new('fonts/TwitterColorEmoji-SVGinOT.ttf')
+      assert.are_equal(false,face:ot_color_has_svg())
+      assert.are_equal(true,f:ot_color_has_svg())
+    end)
+
+    it("can return glyph color png", function()
+      local f = harfbuzz.Face.new('fonts/TwitterColorEmoji-SVGinOT.ttf')
+
+      assert.are_equal(nil,face:ot_color_glyph_get_svg(100))
+      assert.are_equal(nil,f:ot_color_glyph_get_svg(0))
+      assert.are_same(751,f:ot_color_glyph_get_svg(5):get_length())
+      assert.are_same(804,f:ot_color_glyph_get_svg(6):get_length())
+      assert.are_same("<?xml version='1.0' encoding='UTF-8'?>",f:ot_color_glyph_get_svg(5):get_data():sub(1, 38))
+    end)
+
     it("can return script tags", function()
       local t
       local tags = {
@@ -320,6 +336,30 @@
       local f = harfbuzz.Feature.new(fs)
       assert.are_equal(fs, tostring(f))
     end)
+
+    it("has visible fields", function()
+      local f = harfbuzz.Feature.new('-kern')
+      print(getmetatable(f).__index)
+      assert.are_equal(tostring(f.tag), 'kern')
+      assert.are_equal(f.value, 0)
+      assert.are_equal(f.start, nil)
+      assert.are_equal(f._end, nil)
+
+      f = harfbuzz.Feature.new('aalt[3:5]=4')
+      assert.are_equal(tostring(f.tag), 'aalt')
+      assert.are_equal(f.value, 4)
+      assert.are_equal(f.start, 3)
+      assert.are_equal(f._end, 5)
+    end)
+
+    it("has editable fields", function()
+      local f = harfbuzz.Feature.new('-kern')
+      f.tag, f.value, f.start, f._end = harfbuzz.Tag.new"aalt", 4, 3, 5
+      assert.are_equal(tostring(f), "aalt[3:5]=4")
+
+      f.tag, f.value, f.start, f._end = harfbuzz.Tag.new"harf", 0, nil, nil
+      assert.are_equal(tostring(f), "-harf")
+    end)
   end)
 
   describe("harfbuzz.Tag", function()

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/harfbuzz.luadoc
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/harfbuzz.luadoc	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/harfbuzz.luadoc	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,8 +1,8 @@
 -----------
 -- Lua bindings to Harfbuzz.
--- * [Wiki](http://github.com/deepakjois/luaharfbuzz/wiki)
--- * [Source on Github](https://github.com/deepakjois/luaharfbuzz)
--- * [API Coverage Status](https://github.com/deepakjois/luaharfbuzz/blob/master/status/done.txt)
+-- * [Wiki](http://github.com/ufytex/luaharfbuzz/wiki)
+-- * [Source on Github](https://github.com/ufytex/luaharfbuzz)
+-- * [API Coverage Status](https://github.com/ufytex/luaharfbuzz/blob/master/status/done.txt)
 --
 -- @author Deepak Jois <<deepak.jois at gmail.com>>
 -- @copyright 2016
@@ -23,7 +23,7 @@
 --  * `script`: A `Script` object representing the script.
 --  * `language`: A `Language` object representing the language.
 --  * `features`: features to enable, specified as either of the following.
---    - comma-separated list of features. See [feature string syntax reference](https://github.com/deepakjois/luaharfbuzz/wiki/Feature-Strings)
+--    - comma-separated list of features. See [feature string syntax reference](https://github.com/ufytex/luaharfbuzz/wiki/Feature-Strings)
 --    - table of `Feature` objects
 --  @function shape
 
@@ -291,7 +291,7 @@
 --  @type Feature
 
 --- Wraps `hb_feature_from_string`
---  @param feature_string See [feature string syntax reference](https://github.com/deepakjois/luaharfbuzz/wiki/Feature-Strings)
+--  @param feature_string See [feature string syntax reference](https://github.com/ufytex/luaharfbuzz/wiki/Feature-Strings)
 --  @function Feature.new
 
 --- Wraps `hb_feature_to_string`.

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/buffer.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/buffer.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/buffer.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,27 +1,20 @@
 #include "luaharfbuzz.h"
 
 #ifdef LuajitTeX
-static void lua_len (lua_State *L, int i) {
-  switch (lua_type(L, i)) {
-    case LUA_TSTRING:
-      lua_pushnumber(L, (lua_Number)lua_objlen(L, i));
-      break;
-    case LUA_TTABLE:
-      if (!luaL_callmeta(L, i, "__len"))
-        lua_pushnumber(L, (lua_Number)lua_objlen(L, i));
-      break;
-    case LUA_TUSERDATA:
-      if (luaL_callmeta(L, i, "__len"))
-        break;
-      /* FALLTHROUGH */
-    default:
-      luaL_error(L, "attempt to get length of a %s value",
-                 lua_typename(L, lua_type(L, i)));
-  }
+
+static int lua_absindex (lua_State *L, int i) {
+  if (i < 0 && i > LUA_REGISTRYINDEX)
+    i += lua_gettop(L) + 1;
+  return i;
 }
+static int lua_geti (lua_State *L, int index, lua_Integer i) {
+  index = lua_absindex(L, index);
+  lua_pushinteger(L, i);
+  lua_gettable(L, index);
+  return lua_type(L, -1);
+}
 #endif
 
-
 static int buffer_new(lua_State *L) {
   Buffer *b;
 
@@ -59,6 +52,22 @@
   return 0;
 }
 
+static int buffer_get_flags(lua_State *L) {
+  Buffer *b = (Buffer *)luaL_checkudata(L, 1, "harfbuzz.Buffer");
+
+  lua_pushinteger(L, hb_buffer_get_flags(*b));
+  return 1;
+}
+
+static int buffer_set_flags(lua_State *L) {
+  Buffer *b = (Buffer *)luaL_checkudata(L, 1, "harfbuzz.Buffer");
+
+  unsigned int l = luaL_checkinteger(L, 2);
+
+  hb_buffer_set_flags(*b, l);
+  return 0;
+}
+
 static int buffer_get_language(lua_State *L) {
   Buffer *b = (Buffer *)luaL_checkudata(L, 1, "harfbuzz.Buffer");
 
@@ -97,25 +106,56 @@
   return 0;
 }
 
+static int buffer_get_invisible_glyph(lua_State *L) {
+  Buffer *b = (Buffer *)luaL_checkudata(L, 1, "harfbuzz.Buffer");
+
+  lua_pushinteger(L, hb_buffer_get_invisible_glyph(*b));
+  return 1;
+}
+
+static int buffer_set_invisible_glyph(lua_State *L) {
+  Buffer *b = (Buffer *)luaL_checkudata(L, 1, "harfbuzz.Buffer");
+
+  hb_codepoint_t cp = (hb_codepoint_t) luaL_checkinteger(L, 2);
+
+  hb_buffer_set_invisible_glyph(*b, cp);
+  return 0;
+}
+
+static int buffer_get_replacement_codepoint(lua_State *L) {
+  Buffer *b = (Buffer *)luaL_checkudata(L, 1, "harfbuzz.Buffer");
+
+  lua_pushinteger(L, hb_buffer_get_replacement_codepoint(*b));
+  return 1;
+}
+
+static int buffer_set_replacement_codepoint(lua_State *L) {
+  Buffer *b = (Buffer *)luaL_checkudata(L, 1, "harfbuzz.Buffer");
+
+  hb_codepoint_t cp = (hb_codepoint_t) luaL_checkinteger(L, 2);
+
+  hb_buffer_set_replacement_codepoint(*b, cp);
+  return 0;
+}
+
 static int buffer_add_codepoints(lua_State *L) {
   Buffer *b = (Buffer *)luaL_checkudata(L, 1, "harfbuzz.Buffer");
   unsigned int item_offset;
   int item_length;
+  int i;
 
   luaL_checktype(L, 2, LUA_TTABLE);
   item_offset = luaL_optinteger(L, 3, 0);
   item_length = luaL_optinteger(L, 4, -1);
 
-  lua_len (L, 2);
-  unsigned int n = luaL_checkinteger(L, -1);
-  lua_pop(L, 1);
+  int n = lua_rawlen(L, 2);
 
   hb_codepoint_t *text = (hb_codepoint_t *) malloc(n * sizeof(hb_codepoint_t));
 
-  lua_pushnil(L); int i = 0;
-  while (lua_next(L, 2) != 0) {
+  for (i = 0; i != n; ++i) {
+    lua_geti(L, 2, i + 1);
     hb_codepoint_t c = (hb_codepoint_t) luaL_checkinteger(L, -1);
-    text[i++] = c;
+    text[i] = c;
     lua_pop(L, 1);
   }
 
@@ -126,6 +166,20 @@
   return 0;
 }
 
+static int buffer_clear_contents(lua_State *L) {
+  Buffer *b = (Buffer *)luaL_checkudata(L, 1, "harfbuzz.Buffer");
+
+  hb_buffer_clear_contents(*b);
+  return 0;
+}
+
+static int buffer_reset(lua_State *L) {
+  Buffer *b = (Buffer *)luaL_checkudata(L, 1, "harfbuzz.Buffer");
+
+  hb_buffer_reset(*b);
+  return 0;
+}
+
 static int buffer_add_utf8(lua_State *L) {
   Buffer *b = (Buffer *)luaL_checkudata(L, 1, "harfbuzz.Buffer");
   const char *text;
@@ -238,14 +292,22 @@
   { "__gc", buffer_destroy },
   { "add_utf8", buffer_add_utf8 },
   { "add_codepoints", buffer_add_codepoints },
+  { "clear_contents", buffer_clear_contents },
   { "set_direction", buffer_set_direction },
   { "get_direction", buffer_get_direction },
+  { "set_flags", buffer_set_flags },
+  { "get_flags", buffer_get_flags },
   { "set_language", buffer_set_language },
   { "get_language", buffer_get_language },
   { "set_script", buffer_set_script },
   { "get_script", buffer_get_script },
+  { "set_invisible_glyph", buffer_set_invisible_glyph },
+  { "get_invisible_glyph", buffer_get_invisible_glyph },
+  { "set_replacement_codepoint", buffer_set_replacement_codepoint },
+  { "get_replacement_codepoint", buffer_get_replacement_codepoint },
   { "get_glyphs", buffer_get_glyphs },
   { "guess_segment_properties", buffer_guess_segment_properties },
+  { "reset", buffer_reset },
   { "reverse", buffer_reverse },
   { "get_length", buffer_get_length },
   { "get_cluster_level", buffer_get_cluster_level },
@@ -264,6 +326,12 @@
   { "CLUSTER_LEVEL_MONOTONE_CHARACTERS", HB_BUFFER_CLUSTER_LEVEL_MONOTONE_CHARACTERS },
   { "CLUSTER_LEVEL_CHARACTERS", HB_BUFFER_CLUSTER_LEVEL_CHARACTERS },
   { "CLUSTER_LEVEL_DEFAULT", HB_BUFFER_CLUSTER_LEVEL_DEFAULT },
+  { "FLAG_DEFAULT", HB_BUFFER_FLAG_DEFAULT },
+  { "FLAG_BOT", HB_BUFFER_FLAG_BOT },
+  { "FLAG_EOT", HB_BUFFER_FLAG_EOT },
+  { "FLAG_PRESERVE_DEFAULT_IGNORABLES", HB_BUFFER_FLAG_PRESERVE_DEFAULT_IGNORABLES },
+  { "FLAG_REMOVE_DEFAULT_IGNORABLES", HB_BUFFER_FLAG_REMOVE_DEFAULT_IGNORABLES },
+  { "FLAG_DO_NOT_INSERT_DOTTED_CIRCLE", HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE },
   { "GLYPH_FLAG_UNSAFE_TO_BREAK", HB_GLYPH_FLAG_UNSAFE_TO_BREAK },
   { "GLYPH_FLAG_DEFINED", HB_GLYPH_FLAG_DEFINED },
   { NULL, 0 }

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/face.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/face.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/face.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -398,6 +398,31 @@
   return 1;
 }
 
+static int face_ot_color_has_svg(lua_State *L) {
+  Face *f = (Face *)luaL_checkudata(L, 1, "harfbuzz.Face");
+
+  lua_pushboolean(L, hb_ot_color_has_svg(*f));
+  return 1;
+}
+
+static int face_ot_color_glyph_get_svg(lua_State *L) {
+  Face *f = (Face *)luaL_checkudata(L, 1, "harfbuzz.Face");
+  hb_codepoint_t gid = (hb_codepoint_t) luaL_checkinteger(L, 2);
+  hb_blob_t* blob = hb_ot_color_glyph_reference_svg(*f, gid);
+
+  if (hb_blob_get_length(blob) != 0) {
+    Blob *b = (Blob *)lua_newuserdata(L, sizeof(*b));
+    luaL_getmetatable(L, "harfbuzz.Blob");
+    lua_setmetatable(L, -2);
+
+    *b = blob;
+  } else {
+    lua_pushnil(L);
+  }
+
+  return 1;
+}
+
 static int face_destroy(lua_State *L) {
   Face *f = (Face *)luaL_checkudata(L, 1, "harfbuzz.Face");
 
@@ -419,6 +444,8 @@
   { "ot_color_has_layers", face_ot_color_has_layers },
   { "ot_color_glyph_get_layers", face_ot_color_glyph_get_layers },
   { "ot_color_has_png", face_ot_color_has_png },
+  { "ot_color_has_svg", face_ot_color_has_svg },
+  { "ot_color_glyph_get_svg", face_ot_color_glyph_get_svg },
   { "ot_layout_get_script_tags", face_ot_layout_get_script_tags },
   { "ot_layout_get_language_tags", face_ot_layout_get_language_tags },
   { "ot_layout_get_feature_tags", face_ot_layout_get_feature_tags },

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/feature.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/feature.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/feature.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -26,7 +26,63 @@
   return 1;
 }
 
+static const char *feature_tag_ptr;
+static const char *feature_value_ptr;
+static const char *feature_start_ptr;
+static const char *feature_end_ptr;
+
+static int feature_index(lua_State *L) {
+  Feature* f = (Feature *)luaL_checkudata(L, 1, "harfbuzz.Feature");
+  const char *key = lua_tostring(L, 2);
+
+  if (key == feature_tag_ptr) {
+    Tag *tag = (Tag *)lua_newuserdata(L, sizeof(*tag));
+    luaL_getmetatable(L, "harfbuzz.Tag");
+    lua_setmetatable(L, -2);
+    *tag = f->tag;
+  } else if (key == feature_value_ptr) {
+    lua_pushinteger(L, f->value);
+  } else if (key == feature_start_ptr) {
+    if (f->start == HB_FEATURE_GLOBAL_START)
+      lua_pushnil(L);
+    else
+      lua_pushinteger(L, f->start);
+  } else if (key == feature_end_ptr) {
+    if (f->end == HB_FEATURE_GLOBAL_END)
+      lua_pushnil(L);
+    else
+      lua_pushinteger(L, f->end);
+  } else {
+    lua_pushnil(L);
+  }
+  return 1;
+}
+
+static int feature_newindex(lua_State *L) {
+  Feature* f = (Feature *)luaL_checkudata(L, 1, "harfbuzz.Feature");
+  const char *key = lua_tostring(L, 2);
+
+  if (key == feature_tag_ptr) {
+    f->tag = *(Tag *)luaL_checkudata(L, 3, "harfbuzz.Tag");
+  } else if (key == feature_value_ptr) {
+    f->value = luaL_checkinteger(L, 3);
+  } else if (key == feature_start_ptr) {
+    if (lua_toboolean(L, 3))
+      f->start = luaL_checkinteger(L, 3);
+    else
+      f->start = HB_FEATURE_GLOBAL_START;
+  } else if (key == feature_end_ptr) {
+    if (lua_toboolean(L, 3))
+      f->end = luaL_checkinteger(L, 3);
+    else
+      f->end = HB_FEATURE_GLOBAL_END;
+  }
+  return 0;
+}
+
 static const struct luaL_Reg feature_methods[] = {
+  { "__index", feature_index },
+  { "__newindex", feature_newindex },
   { "__tostring", feature_to_string },
   { NULL, NULL },
 };
@@ -37,5 +93,18 @@
 };
 
 int register_feature(lua_State *L) {
+  lua_pushliteral(L, "tag");
+  feature_tag_ptr = lua_tostring(L, -1);
+  (void) luaL_ref (L, LUA_REGISTRYINDEX);
+  lua_pushliteral(L, "value");
+  feature_value_ptr = lua_tostring(L, -1);
+  (void) luaL_ref (L, LUA_REGISTRYINDEX);
+  lua_pushliteral(L, "start");
+  feature_start_ptr = lua_tostring(L, -1);
+  (void) luaL_ref (L, LUA_REGISTRYINDEX);
+  lua_pushliteral(L, "_end"); /* _end instead of end to avoid Lua keyword */
+  feature_end_ptr = lua_tostring(L, -1);
+  (void) luaL_ref (L, LUA_REGISTRYINDEX);
+
   return register_class(L, "harfbuzz.Feature", feature_methods, feature_functions, NULL);
 }

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/font.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/font.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/font.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -184,7 +184,7 @@
     luaL_getmetatable(L, "harfbuzz.Blob");
     lua_setmetatable(L, -2);
 
-    *b = hb_ot_color_glyph_reference_png(*f, gid);
+    *b = blob;
   } else {
     lua_pushnil(L);
   }

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/luaharfbuzz.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/luaharfbuzz.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/src/luaharfbuzz/luaharfbuzz.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,9 +1,22 @@
 #include "luaharfbuzz.h"
+#ifdef LuajitTeX
+static int lua_absindex (lua_State *L, int i) {
+  if (i < 0 && i > LUA_REGISTRYINDEX)
+    i += lua_gettop(L) + 1;
+  return i;
+}
+static int lua_geti (lua_State *L, int index, lua_Integer i) {
+  index = lua_absindex(L, index);
+  lua_pushinteger(L, i);
+  lua_gettable(L, index);
+  return lua_type(L, -1);
+}
+#endif
 
 int shape_full (lua_State *L) {
-  int i = 0;
   Font *font = (Font *)luaL_checkudata(L, 1, "harfbuzz.Font");
   Buffer *buf = (Buffer *)luaL_checkudata(L, 2, "harfbuzz.Buffer");
+  unsigned int i;
   luaL_checktype(L, 3, LUA_TTABLE);
   luaL_checktype(L, 4, LUA_TTABLE);
 
@@ -10,10 +23,10 @@
   unsigned int num_features = lua_rawlen(L, 3);
   Feature *features = (Feature *) malloc (num_features * sizeof(hb_feature_t));
 
-  lua_pushnil(L);
-  while (lua_next(L, 3) != 0) {
+  for (i = 0; i != num_features; ++i) {
+    lua_geti(L, 3, i + 1);
     Feature* f = (Feature *)luaL_checkudata(L, -1, "harfbuzz.Feature");
-    features[i++] = *f;
+    features[i] = *f;
     lua_pop(L, 1);
   }
 
@@ -20,11 +33,10 @@
   const char **shapers = NULL;
   size_t num_shapers = lua_rawlen(L, 4);
   if (num_shapers) {
-    i = 0;
     shapers = (const char**) calloc (num_shapers + 1, sizeof(char*));
-    lua_pushnil(L);
-    while (lua_next(L, 4) != 0) {
-      shapers[i++] = luaL_checkstring(L, -1);
+    for (i = 0; i != num_shapers; ++i) {
+      lua_geti(L, 4, i + 1);
+      shapers[i] = luaL_checkstring(L, -1);
       lua_pop(L, 1);
     }
   }

Modified: trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/status/full_api.txt
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/status/full_api.txt	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luaharfbuzz/status/full_api.txt	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,4 +1,12 @@
+hb_aat_layout_feature_type_get_name_id
+hb_aat_layout_feature_type_get_selector_infos
+hb_aat_layout_get_feature_types
+hb_aat_layout_has_positioning
+hb_aat_layout_has_substitution
+hb_aat_layout_has_tracking
+hb_blob_copy_writable_or_fail
 hb_blob_create
+hb_blob_create_from_file
 hb_blob_create_sub_blob
 hb_blob_destroy
 hb_blob_get_data
@@ -17,10 +25,12 @@
 hb_buffer_add_utf32
 hb_buffer_add_utf8
 hb_buffer_allocation_successful
+hb_buffer_append
 hb_buffer_clear_contents
 hb_buffer_create
 hb_buffer_deserialize_glyphs
 hb_buffer_destroy
+hb_buffer_diff
 hb_buffer_get_cluster_level
 hb_buffer_get_content_type
 hb_buffer_get_direction
@@ -28,6 +38,7 @@
 hb_buffer_get_flags
 hb_buffer_get_glyph_infos
 hb_buffer_get_glyph_positions
+hb_buffer_get_invisible_glyph
 hb_buffer_get_language
 hb_buffer_get_length
 hb_buffer_get_replacement_codepoint
@@ -51,6 +62,7 @@
 hb_buffer_set_content_type
 hb_buffer_set_direction
 hb_buffer_set_flags
+hb_buffer_set_invisible_glyph
 hb_buffer_set_language
 hb_buffer_set_length
 hb_buffer_set_message_func
@@ -59,11 +71,18 @@
 hb_buffer_set_segment_properties
 hb_buffer_set_unicode_funcs
 hb_buffer_set_user_data
-hb_coretext_face_create
-hb_coretext_face_get_cg_font
-hb_coretext_font_get_ct_font
+hb_color_get_alpha
+hb_color_get_blue
+hb_color_get_green
+hb_color_get_red
 hb_direction_from_string
 hb_direction_to_string
+hb_face_builder_add_table
+hb_face_builder_create
+hb_face_collect_unicodes
+hb_face_collect_variation_selectors
+hb_face_collect_variation_unicodes
+hb_face_count
 hb_face_create
 hb_face_create_for_tables
 hb_face_destroy
@@ -70,6 +89,7 @@
 hb_face_get_empty
 hb_face_get_glyph_count
 hb_face_get_index
+hb_face_get_table_tags
 hb_face_get_upem
 hb_face_get_user_data
 hb_face_is_immutable
@@ -101,13 +121,16 @@
 hb_font_funcs_set_glyph_from_name_func
 hb_font_funcs_set_glyph_func
 hb_font_funcs_set_glyph_h_advance_func
+hb_font_funcs_set_glyph_h_advances_func
 hb_font_funcs_set_glyph_h_kerning_func
 hb_font_funcs_set_glyph_h_origin_func
 hb_font_funcs_set_glyph_name_func
 hb_font_funcs_set_glyph_v_advance_func
+hb_font_funcs_set_glyph_v_advances_func
 hb_font_funcs_set_glyph_v_kerning_func
 hb_font_funcs_set_glyph_v_origin_func
 hb_font_funcs_set_nominal_glyph_func
+hb_font_funcs_set_nominal_glyphs_func
 hb_font_funcs_set_user_data
 hb_font_funcs_set_variation_glyph_func
 hb_font_get_empty
@@ -115,6 +138,7 @@
 hb_font_get_face
 hb_font_get_glyph
 hb_font_get_glyph_advance_for_direction
+hb_font_get_glyph_advances_for_direction
 hb_font_get_glyph_contour_point
 hb_font_get_glyph_contour_point_for_origin
 hb_font_get_glyph_extents
@@ -121,6 +145,7 @@
 hb_font_get_glyph_extents_for_origin
 hb_font_get_glyph_from_name
 hb_font_get_glyph_h_advance
+hb_font_get_glyph_h_advances
 hb_font_get_glyph_h_kerning
 hb_font_get_glyph_h_origin
 hb_font_get_glyph_kerning_for_direction
@@ -127,6 +152,7 @@
 hb_font_get_glyph_name
 hb_font_get_glyph_origin_for_direction
 hb_font_get_glyph_v_advance
+hb_font_get_glyph_v_advances
 hb_font_get_glyph_v_kerning
 hb_font_get_glyph_v_origin
 hb_font_get_h_extents
@@ -133,11 +159,12 @@
 hb_font_get_nominal_glyph
 hb_font_get_parent
 hb_font_get_ppem
+hb_font_get_ptem
 hb_font_get_scale
 hb_font_get_user_data
-hb_font_get_v_extents
 hb_font_get_var_coords_normalized
 hb_font_get_variation_glyph
+hb_font_get_v_extents
 hb_font_glyph_from_string
 hb_font_glyph_to_string
 hb_font_is_immutable
@@ -148,6 +175,7 @@
 hb_font_set_funcs_data
 hb_font_set_parent
 hb_font_set_ppem
+hb_font_set_ptem
 hb_font_set_scale
 hb_font_set_user_data
 hb_font_set_var_coords_design
@@ -157,6 +185,7 @@
 hb_ft_face_create
 hb_ft_face_create_cached
 hb_ft_face_create_referenced
+hb_ft_font_changed
 hb_ft_font_create
 hb_ft_font_create_referenced
 hb_ft_font_get_face
@@ -167,15 +196,80 @@
 hb_glib_get_unicode_funcs
 hb_glib_script_from_script
 hb_glib_script_to_script
-hb_icu_get_unicode_funcs
-hb_icu_script_from_script
-hb_icu_script_to_script
+hb_glyph_info_get_glyph_flags
+hb_gobject_aat_layout_feature_selector_get_type
+hb_gobject_aat_layout_feature_type_get_type
+hb_gobject_blob_get_type
+hb_gobject_buffer_cluster_level_get_type
+hb_gobject_buffer_content_type_get_type
+hb_gobject_buffer_diff_flags_get_type
+hb_gobject_buffer_flags_get_type
+hb_gobject_buffer_get_type
+hb_gobject_buffer_serialize_flags_get_type
+hb_gobject_buffer_serialize_format_get_type
+hb_gobject_direction_get_type
+hb_gobject_face_get_type
+hb_gobject_feature_get_type
+hb_gobject_font_funcs_get_type
+hb_gobject_font_get_type
+hb_gobject_glyph_flags_get_type
+hb_gobject_glyph_info_get_type
+hb_gobject_glyph_position_get_type
+hb_gobject_map_get_type
+hb_gobject_memory_mode_get_type
+hb_gobject_ot_color_palette_flags_get_type
+hb_gobject_ot_layout_glyph_class_get_type
+hb_gobject_ot_math_constant_get_type
+hb_gobject_ot_math_glyph_part_flags_get_type
+hb_gobject_ot_math_glyph_part_get_type
+hb_gobject_ot_math_glyph_variant_get_type
+hb_gobject_ot_math_kern_get_type
+hb_gobject_ot_var_axis_flags_get_type
+hb_gobject_script_get_type
+hb_gobject_segment_properties_get_type
+hb_gobject_set_get_type
+hb_gobject_shape_plan_get_type
+hb_gobject_unicode_combining_class_get_type
+hb_gobject_unicode_funcs_get_type
+hb_gobject_unicode_general_category_get_type
+hb_gobject_user_data_key_get_type
+hb_graphite2_face_get_gr_face
+hb_graphite2_font_get_gr_font
 hb_language_from_string
 hb_language_get_default
 hb_language_to_string
+hb_map_allocation_successful
+hb_map_clear
+hb_map_create
+hb_map_del
+hb_map_destroy
+hb_map_get
+hb_map_get_empty
+hb_map_get_population
+hb_map_get_user_data
+hb_map_has
+hb_map_is_empty
+hb_map_reference
+hb_map_set
+hb_map_set_user_data
+hb_ot_color_glyph_get_layers
+hb_ot_color_glyph_reference_png
+hb_ot_color_glyph_reference_svg
+hb_ot_color_has_layers
+hb_ot_color_has_palettes
+hb_ot_color_has_png
+hb_ot_color_has_svg
+hb_ot_color_palette_color_get_name_id
+hb_ot_color_palette_get_colors
+hb_ot_color_palette_get_count
+hb_ot_color_palette_get_flags
+hb_ot_color_palette_get_name_id
 hb_ot_font_set_funcs
+hb_ot_layout_collect_features
 hb_ot_layout_collect_lookups
+hb_ot_layout_feature_get_characters
 hb_ot_layout_feature_get_lookups
+hb_ot_layout_feature_get_name_ids
 hb_ot_layout_feature_with_variations_get_lookups
 hb_ot_layout_get_attach_points
 hb_ot_layout_get_glyph_class
@@ -191,10 +285,12 @@
 hb_ot_layout_language_get_required_feature
 hb_ot_layout_language_get_required_feature_index
 hb_ot_layout_lookup_collect_glyphs
+hb_ot_layout_lookups_substitute_closure
 hb_ot_layout_lookup_substitute_closure
 hb_ot_layout_lookup_would_substitute
 hb_ot_layout_script_find_language
 hb_ot_layout_script_get_language_tags
+hb_ot_layout_script_select_language
 hb_ot_layout_table_choose_script
 hb_ot_layout_table_find_feature_variations
 hb_ot_layout_table_find_script
@@ -201,6 +297,7 @@
 hb_ot_layout_table_get_feature_tags
 hb_ot_layout_table_get_lookup_count
 hb_ot_layout_table_get_script_tags
+hb_ot_layout_table_select_script
 hb_ot_math_get_constant
 hb_ot_math_get_glyph_assembly
 hb_ot_math_get_glyph_italics_correction
@@ -210,16 +307,28 @@
 hb_ot_math_get_min_connector_overlap
 hb_ot_math_has_data
 hb_ot_math_is_glyph_extended_shape
+hb_ot_name_get_utf16
+hb_ot_name_get_utf32
+hb_ot_name_get_utf8
+hb_ot_name_list_names
 hb_ot_shape_glyphs_closure
 hb_ot_shape_plan_collect_lookups
 hb_ot_tag_from_language
+hb_ot_tags_from_script
+hb_ot_tags_from_script_and_language
+hb_ot_tags_to_script_and_language
 hb_ot_tag_to_language
 hb_ot_tag_to_script
-hb_ot_tags_from_script
 hb_ot_var_find_axis
+hb_ot_var_find_axis_info
 hb_ot_var_get_axes
 hb_ot_var_get_axis_count
+hb_ot_var_get_axis_infos
+hb_ot_var_get_named_instance_count
 hb_ot_var_has_data
+hb_ot_var_named_instance_get_design_coords
+hb_ot_var_named_instance_get_postscript_name_id
+hb_ot_var_named_instance_get_subfamily_name_id
 hb_ot_var_normalize_coords
 hb_ot_var_normalize_variations
 hb_script_from_iso15924_tag
@@ -246,8 +355,11 @@
 hb_set_invert
 hb_set_is_empty
 hb_set_is_equal
+hb_set_is_subset
 hb_set_next
 hb_set_next_range
+hb_set_previous
+hb_set_previous_range
 hb_set_reference
 hb_set_set
 hb_set_set_user_data
@@ -268,6 +380,20 @@
 hb_shape_plan_get_user_data
 hb_shape_plan_reference
 hb_shape_plan_set_user_data
+hb_subset
+hb_subset_input_create_or_fail
+hb_subset_input_destroy
+hb_subset_input_drop_tables_set
+hb_subset_input_get_desubroutinize
+hb_subset_input_get_drop_hints
+hb_subset_input_get_retain_gids
+hb_subset_input_glyph_set
+hb_subset_input_nameid_set
+hb_subset_input_reference
+hb_subset_input_set_desubroutinize
+hb_subset_input_set_drop_hints
+hb_subset_input_set_retain_gids
+hb_subset_input_unicode_set
 hb_tag_from_string
 hb_tag_to_string
 hb_unicode_combining_class

Modified: trunk/Build/source/texk/web2c/luatexdir/luamd5/md5lib.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luamd5/md5lib.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luamd5/md5lib.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -162,7 +162,7 @@
 
 /* not now .. doesn't compile anyway
 
-#include "../luapplib/util/utilmd5.h"
+#include "../luapplib/src/util/utilmd5.h"
 
 static int pdfelib_md_5(lua_State * L)
 {
@@ -194,7 +194,7 @@
 
 /* We could use a different file but this is as easy. */
 
-#include "../luapplib/util/utilsha.h"
+#include "../luapplib/src/util/utilsha.h"
 
 static int sha2_256(lua_State * L)
 {
@@ -202,7 +202,7 @@
         uint8_t result[SHA256_DIGEST_LENGTH];
         size_t size = 0;
         const char *data = lua_tolstring(L,1,&size);
-        sha256(data,size,result);
+        sha256_digest(data,size,result,SHA_BYTES);
         lua_pushlstring(L,(const char *)result,SHA256_DIGEST_LENGTH);
         return 1;
     }
@@ -215,7 +215,7 @@
         size_t size = 0;
         uint8_t result[SHA384_DIGEST_LENGTH];
         const char *data = lua_tolstring(L,1,&size);
-        sha384(data,size,result);
+        sha384_digest(data,size,result,SHA_BYTES);
         lua_pushlstring(L,(const char *)result,SHA384_DIGEST_LENGTH);
         return 1;
     }
@@ -228,7 +228,7 @@
         uint8_t result[SHA512_DIGEST_LENGTH];
         size_t size = 0;
         const char *data = lua_tolstring(L,1,&size);
-        sha512(data,size,result);
+        sha512_digest(data,size,result,SHA_BYTES);
         lua_pushlstring(L,(const char *)result,SHA512_DIGEST_LENGTH);
         return 1;
     }

Modified: trunk/Build/source/texk/web2c/luatexdir/luapeg/lpeg.c
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapeg/lpeg.c	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapeg/lpeg.c	2020-02-15 12:45:08 UTC (rev 53789)
@@ -394,7 +394,7 @@
 */
 /* luajit aarch64  */
 /* https://github.com/LuaJIT/LuaJIT/pull/230#issuecomment-260205661 */
-/* We play safe on arm64  assuming a virtual address bits VA_BITS >47, 
+/* We play safe on arm64  assuming a virtual address bits VA_BITS >47,*/
 /* even if a  Linux kernel  can be configured with VA_BITS < 47 */
 /* and lightuserdata is ok then.  Anyway, */
 /* replacing lightuserdata with full userdata seems ok wrt performance. */

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/.gitattributes
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/.gitattributes	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/.gitattributes	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,10 @@
+*.c text=auto eol=lf
+*.h text=auto eol=lf
+Makefile text=auto eol=lf
+
+*.rst binary
+*.png binary
+*.jpg binary
+*.css binary
+*.html binary
+*.js binary
\ No newline at end of file

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/.gitignore
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/.gitignore	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/.gitignore	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,8 @@
+src/build/*
+src/CMakeFiles/*
+src/CMakeCache.txt
+src/.vs/*
+src/.cproject
+src/.project
+src/.settings
+zlib/*
\ No newline at end of file

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/.gitmodules
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/.gitmodules	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/.gitmodules	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,3 @@
+[submodule "zlib"]
+	path = zlib
+	url = git://github.com/madler/zlib.git

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/.travis.yml
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/.travis.yml	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/.travis.yml	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,20 @@
+language: c
+
+script:
+  - mkdir build
+  - cd build
+  - cmake ..
+  - make -j 2
+  - make -j 2 test
+
+matrix:
+  include:
+    - os: linux
+      compiler: clang
+    - os: linux
+      compiler: gcc
+    - os: osx
+      osx_image: xcode10.2
+  allow_failures:
+    - os: osx
+      osx_image: xcode8

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/CMakeLists.txt
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/CMakeLists.txt	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/CMakeLists.txt	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.5)
+
+add_subdirectory(zlib)
+add_subdirectory(src)
+
+enable_testing()

Deleted: trunk/Build/source/texk/web2c/luatexdir/luapplib/Makefile.orig
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/Makefile.orig	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/Makefile.orig	2020-02-15 12:45:08 UTC (rev 53789)
@@ -1,89 +0,0 @@
-
-ifeq ($(ARCH),)
-	ARCH=x64
-endif
-
-UNAME:=$(shell uname)
-ifeq ($(UNAME),Linux)
-	BUILDSUFFIX=_ux_$(ARCH)
-	SOEXT=.so
-	EXEEXT=
-	STATICCOPTS=
-#	SHAREDCOPTS=-fPIC
-	LFLAGS=
-	LIBS=-lm
-else
-	BUILDSUFFIX=_win_$(ARCH)
-	SOEXT=.dll
-	EXEEXT=.exe
-	STATICCOPTS=
-#	SHAREDCOPTS=-DPPDLL
-	LFLAGS = -Wl,--output-def,$@.def,--out-implib,$@.a
-	LIBS=
-endif
-
-CC=gcc
-W=-Wall -Wunused -Wimplicit -Wreturn-type -Wdeclaration-after-statement -Wno-unknown-pragmas -Wmissing-prototypes -Wmissing-declarations -Wparentheses -Wswitch -Wtrigraphs -Wcast-qual -Wcast-align -Wwrite-strings -Wold-style-definition -Wpointer-arith
-#W=-Wall
-CFLAGS=$(W) -O2
-
-OBJEXT=$(BUILDSUFFIX).o
-
-PPUTILS=utilmem utillog utilnumber utiliof utilmd5 utilsha utilcrypt
-PPFILTERS=utilbasexx utilflate utillzw utilfpred
-PPMODULES=ppheap pparray ppdict ppstream ppcrypt ppxref ppload
-
-OUTDIR=build
-UTILSDIR=util
-
-PPSTATICUTILSOBJ=$(patsubst %, $(OUTDIR)/%$(OBJEXT), $(PPUTILS))
-PPSTATICFILTERSOBJ=$(patsubst %, $(OUTDIR)/%$(OBJEXT), $(PPFILTERS))
-PPSTATICOBJ=$(patsubst %, $(OUTDIR)/%$(OBJEXT), $(PPMODULES))
-PPSTATICLIB=$(OUTDIR)/libpp.static$(BUILDSUFFIX).a
-
-# dependencies
-FLATEDIR=zlib
-FLATELIB=$(FLATEDIR)/libz.static$(BUILDSUFFIX).a
-PPSTATICDEPS=$(FLATELIB)
-
-# test programm
-PPTEST1=$(OUTDIR)/pptest1$(EXEEXT)
-PPTEST2=$(OUTDIR)/pptest2$(EXEEXT)
-PPTEST3=$(OUTDIR)/pptest3$(EXEEXT)
-
-# includes
-INC=-I $(UTILSDIR)
-AUX=-I $(FLATEDIR)
-
-default: md $(PPSTATICLIB) $(PPTEST1) $(PPTEST2) $(PPTEST3)
-
-md:
-	@[ -d $(OUTDIR) ] || mkdir -p $(OUTDIR)
-
-$(PPSTATICOBJ): $(OUTDIR)/%$(OBJEXT): %.c %.h
-	$(CC) $(CFLAGS) $(STATICCOPTS) $(INC) -o $@ -c $<
-
-$(PPSTATICUTILSOBJ): $(OUTDIR)/%$(OBJEXT): $(UTILSDIR)/%.c $(UTILSDIR)/%.h
-	$(CC) $(CFLAGS) $(STATICCOPTS) $(INC) -o $@ -c $<
-
-$(PPSTATICFILTERSOBJ): $(OUTDIR)/%$(OBJEXT): $(UTILSDIR)/%.c $(UTILSDIR)/%.h
-	$(CC) $(CFLAGS) $(STATICCOPTS) $(INC) $(AUX) -o $@ -c $<
-
-$(PPSTATICLIB): $(PPSTATICOBJ) $(PPSTATICUTILSOBJ) $(PPSTATICFILTERSOBJ)
-	ar rcs $@ $^
-	strip -N print_hex $@
-
-$(PPTEST1): $(PPSTATICLIB) pptest1.c
-	$(CC) $(CFLAGS) $(STATICCOPTS) -o $(OUTDIR)/pptest1$(OBJEXT) -c pptest1.c
-	$(CC) -static-libgcc $(CFLAGS) -o $(PPTEST1) $(OUTDIR)/pptest1$(OBJEXT) $(PPSTATICLIB) $(PPSTATICDEPS) $(LIBS)
-
-$(PPTEST2): $(PPSTATICLIB) pptest2.c
-	$(CC) $(CFLAGS) $(STATICCOPTS) -o $(OUTDIR)/pptest2$(OBJEXT) -c pptest2.c
-	$(CC) -static-libgcc $(CFLAGS) -o $(PPTEST2) $(OUTDIR)/pptest2$(OBJEXT) $(PPSTATICLIB) $(PPSTATICDEPS) $(LIBS)
-
-$(PPTEST3): $(PPSTATICLIB) pptest3.c
-	$(CC) $(CFLAGS) $(STATICCOPTS) -I util -o $(OUTDIR)/pptest3$(OBJEXT) -c pptest3.c
-	$(CC) -static-libgcc $(CFLAGS) -o $(PPTEST3) $(OUTDIR)/pptest3$(OBJEXT) $(PPSTATICLIB) $(PPSTATICDEPS) $(LIBS)
-
-clean:
-	rm -f $(OUTDIR)/*$(OBJEXT) $(OUTDIR)/*.a $(OUTDIR)/*$(EXEEXT)

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/README.md
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/README.md	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/README.md	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,9 @@
+## pplib - pdf disassembling library for LuaTeX
+
+This is `plib` - PDF disassembling library for LuaTeX (http://luatex.org)
+
+The library has no LuaTeX dependency, it depends only on `zlib`.
+However, `pplib` was tailor-made for LuaTeX and its functionals are
+somewhat limited (eg. read-only PDF support).
+
+Author: Paweł Jackowski p.jackowski at gust.org.pl

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/azure-pipelines.yml
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/azure-pipelines.yml	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/azure-pipelines.yml	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,36 @@
+# C/C++ with GCC
+# Build your C/C++ project with GCC using make.
+# Add steps that publish test results, save build artifacts, deploy, and more:
+# https://docs.microsoft.com/azure/devops/pipelines/apps/c-cpp/gcc
+
+trigger:
+- master
+
+jobs:
+
+- job: Build
+
+  strategy:
+    matrix:
+      linux:
+        imageName: "ubuntu-16.04"
+      mac:
+        imageName: "macos-10.13"
+      windows:
+        imageName: "vs2017-win2016"
+    maxParallel: 3
+
+  pool:
+    vmImage: $(imageName)
+
+  steps:
+  - checkout: self
+    submodules: recursive
+  - task: CMake at 1
+    displayName: 'CMake ..'
+    inputs:
+      cmakeArgs: '..'
+  - task: CMake at 1
+    displayName: 'CMake --build . --config Debug'
+    inputs:
+      cmakeArgs: '--build . --config Debug'

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/Makefile
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/Makefile	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/Makefile	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,20 @@
+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line.
+SPHINXOPTS    =
+SPHINXBUILD   = sphinx-build
+SPHINXPROJ    = pplib
+SOURCEDIR     = .
+BUILDDIR      = _build
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
\ No newline at end of file

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/environment.pickle
===================================================================
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===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/environment.pickle	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/environment.pickle	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/environment.pickle
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
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===================================================================
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===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi-1.x.doctree	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi-1.x.doctree	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi-1.x.doctree
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
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===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi-2.x.doctree
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi-2.x.doctree	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi-2.x.doctree	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi-2.x.doctree
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi.doctree
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi.doctree
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi.doctree	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi.doctree	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppapi.doctree
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppcode.doctree
===================================================================
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===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppcode.doctree	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppcode.doctree	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppcode.doctree
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/pplib.doctree
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/pplib.doctree
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/pplib.doctree	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/pplib.doctree	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/pplib.doctree
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppnew.doctree
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppnew.doctree
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppnew.doctree	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppnew.doctree	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/doctrees/ppnew.doctree
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/.buildinfo
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/.buildinfo	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/.buildinfo	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,4 @@
+# Sphinx build info version 1
+# This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done.
+config: 5a0a9f8c8bb0798c3d499fe9e55f5963
+tags: 645f666f9bcd5a90fca523b33c5a78b7

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppapi-1.x.rst.txt
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppapi-1.x.rst.txt	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppapi-1.x.rst.txt	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,937 @@
+
+``pplib`` 1.x
+=============
+
+``pplib`` is a library for raw PDF access. It parses PDF documents and provides an interface to access document structures in C.
+
+C-API
+=====
+
+Types
+-----
+
+``pplib`` defines several C-types to represent PDF types:
+
+- ``ppint`` - signed integer (``int64_t``)
+- ``ppnum`` - real number (double)
+- ``ppname`` - PDF name
+- ``ppstring`` - PDF string
+- ``pparray`` - PDF array
+- ``ppdict`` - PDF dict
+- ``ppstream`` - PDF stream
+- ``ppref`` - PDF indirect reference
+- ``ppobj`` - a container of all above
+
+Among ``ppint`` and ``ppnum``, we also use ``ppuint`` - unsigned integer (machine word, alias to ``size_t``).
+
+Other API types:
+
+- ``ppdoc`` - PDF document
+- ``ppxref`` - cross-references table
+- ``ppcontext`` - ... later
+- ``pprect`` - rectangle
+- ``ppmatrix`` - matrix
+
+Integer, number, name and string are treated as simple types.
+Names and strings are actually C-structures, but exposed to API as typedefs to ``const char *``.
+Other types (array, dict, stream, reference, object container, xref, PDF) are C-structures,
+and you operate it their pointers. So when you declare a simple type variable you say::
+
+  ppuint u;
+  ppnum n;
+  ppname name;
+  ppstring string;
+  ...
+
+And when you declare a compound type you operate on pointers::
+
+  ppobj *obj;
+  pparray *array;
+  ppdict *dict;
+  ppstream *stream;
+  ppref *ref;
+  ppdoc *pdf;
+
+Some of those C-types are defined in library header ``ppapi.h`` (complete types). Some others are incomplete
+(eg. you can't say ``sizeof(ppdoc)`` or ``sizeof(ppxref)``). This is to avoid unnecesary dependencies in
+the header. [At some points it's not clear to me what to hide and what to expose, will see.] The library itself
+uses ``pplib.h`` but for auxilary applications including a standalone ``ppapi.h`` header should be enough.
+
+``pplib`` was designed having **read-only** PDF access in mind. Even if some structure is completelly exposed,
+so that you can directly access its members, you should treat them as read-only. I don't make them ``const`` because
+then all variable declarations would need to be ``const``, which is annoying, and I'd need some trickery in the library
+internals to unconst. Besides, nothing is really const for C type casts.
+
+Object
+------
+
+A common container for all elementary PDF object types is ``ppobj`` structure. ``ppobj`` has a type identifier
+(integer) and union of values::
+
+  struct ppobj {
+    ppobjtp type;
+    union {
+      ppint integer;
+      ppnum number;
+      ppname name;
+      ppstring string;
+      pparray *array;
+      ppdict *dict;
+      ppstream *stream;
+      ppref *ref;
+      void *any;
+    };
+  };
+
+Object type is one of constants (enum)::
+
+  PPNONE
+  PPNULL
+  PPBOOL
+  PPINT
+  PPNUM
+  PPNAME
+  PPSTRING
+  PPARRAY
+  PPDICT
+  PPSTREAM
+  PPREF
+
+The type determines the structure member you're allowed to access::
+
+  ppobj *obj;
+  ...
+  switch (obj->type)
+  {
+    case PPNONE: // shouldn't actually happen, indicates some failure
+      break;
+    case PPNULL: // valid PDF null object, no value
+      break;
+    case PPBOOL: // do something with obj->integer (ppint), value 0 or 1
+      break;
+    case PPINT:  // do something with obj->integer (ppint)
+      break;
+    case PPNUM:  // do something with obj->number (ppnum)
+      break;
+    case PPNAME: // do something with obj->name (ppname)
+      break;
+    case PPSTRING: // do something with obj->string (ppstring)
+      break;
+    case PPARRAY: // do something with obj->array (pparray *)
+      break;
+    case PPDICT: // do something with obj->dict (ppdict *)
+      break;
+    case PPSTREAM: // do something with obj->stream (ppstream *)
+      break;
+    case PPREF: // do something with obj->ref (ppref *)
+      break;
+  }
+
+More often then not you know exactly what type of object value is expected, in which case
+you may use one of the following macros::
+
+  // returns 1 if o->type is PPNULL
+  int ppobj_get_null(o)         \
+
+  // if o->type is PPBOOL, sets int v to 0 or 1 and returns 1, 0 otherwise
+  int ppobj_get_bool(o, v)
+
+  // if o->type is PPINT, sets ppint v and returns 1, 0 otherwise
+  int ppobj_get_int(o, v)
+
+  // if o->type is PPINT and >= 0, sets ppuint v and returns 1, 0 otherwise
+  int ppobj_get_uint(o, v)
+
+  // if o->type is PPNUM or PPINT, sets ppnum v and returns 1, 0 otherwise
+  int ppobj_get_num(o, v)
+
+  // if o->type is PPNAME returns the name, NULL otherwise
+  ppname ppobj_get_name(o)
+
+  // if o->type is PPSTRING returns the string, NULL otherwise
+  ppstring ppobj_get_string(o)
+
+  // if o->type is PPARRAY returns the array, NULL otherwise
+  pparray * ppobj_get_array(o)
+
+  // if o->type is PPDICT returns the dict, NULL otherwise
+  ppdict * ppobj_get_dict(o)
+
+  // if o->type is PPSTREAM returns the stream, NULL otherwise
+  ppstream * ppobj_get_stream(o)
+
+  // if o->type is PPREF returns the reference, NULL otherwise
+  ppref * ppobj_get_ref(o)
+
+Note the coercion from integer to real number, but not reverse. In practise, whenever you expect a real number,
+you should also handle integer (eg. '1' used instead of '1.0').
+
+It is a common case that the object is given as an indirect reference, but what you actually
+want is not the reference, but the object referred by it. Here is a helper for it::
+
+  // if o->type is PPREF, returns what the reference points, otherwise returns o
+  ppobj * ppobj_rget_obj(o)
+
+Also every ``ppobj_get_*`` macro has ``ppobj_rget_*`` counterpart that makes a check
+for the expected type, but if the object is PPREF, it jumps to the target object.
+So for example ``ppobj_rget_dict(obj)`` will return dict if ``obj`` is of type PPDICT
+or if it is of type PPREF and ``obj->ref`` hosts an object of type PPDICT.
+
+Names
+-----
+
+PDF names are represented as ``ppname``.
+I find it convenient to have ``ppname`` type pretending ``const char *``. This allows to use ``ppname``
+in all C-style string functions like ``printf("%s", name)``.
+
+Be aware, however, that ``ppname`` is actually a C-structure. It is perfectly ok to cast ``ppname`` to ``const char *``::
+
+  ppname name;
+  ...
+  (const char *)name;
+
+But reverse is forbidden::
+
+  const char *cstr = "cstring";
+  ...
+  (ppname)cstr; // expect segmentation fault soon
+
+For convenient use in C, names are ``'\0'`` terminated. But to get the length of name better always use
+``ppname_size()`` macro. ``ppname`` object knows its size, don't use ``strlen()``::
+
+  size_t ppname_size(ppname name); // macro, returns length of name in bytes
+
+In current implementation names are not hashed anyhow, so name-to-name comparison is not smarter than ``memcmp()``.
+Use macros::
+
+  int ppname_is(ppname name, "literal");    // to compare ppname with C-literal string
+  int ppname_eq(ppname name, ppname other); // to compare ppname with a different name
+
+If you'll use ``pplib`` to parse contents streams, you may need to distinguish names from operators
+(more precisely executable names). Names in PDF are preceeded by '/', executable names aren't. In both
+cases PDF parser will produce ``ppname`` but can be distingushed with::
+
+  int ppname_exec(ppname name); // returns non-zero if name is executable
+
+Names are kept in their raw form, with possible PDF specific escapes (in text below we call it **encoded** form).
+Leading '/' is omitted, though. One may need a decoded name, with no PDF escapes.
+A pair of functions provides a simple interface to switch between those two forms::
+
+  ppname ppname_decoded (ppname name); // returns decoded (unescaped) form of the name
+  ppname ppname_encoded (ppname name); // returns encoded (escaped) form of the name
+
+In pretty most cases PDF names contains only letters (no special characters, no escapes), so decoded and encoded forms are identical.
+In that case both functions simply return the argument. It is ok to call ``ppname_decoded()`` on already decoded form
+and ``ppname_encoded()`` on already encoded form. Both forms are produced by PDF objects parser, so accessing ``ppname`` alter ego
+in whatever direction needs no extra decoding or allocation costs.
+
+String
+------
+
+PDF strings have the same internal construction as names, so most of names description above applies to strings as well.
+``ppstring`` is a typedef of ``const char *``, roughly ``'\0'`` terminiated C-string. To get the size of the string::
+
+  size_t ppstring_size(ppstring string); // macro, returns the length of the string in bytes
+
+Strings are provided in their raw form, preserving PDF specific escapes, but with no
+``()`` or ``<>`` delims. To distinguish plain strings from hex strings::
+
+  int ppstring_hex(ppstring string); // macro, returns non zero if hex string
+
+Or if you prefer::
+
+  switch (ppstring_type(string))
+  {
+    case PPSTRING_PLAIN: // literal string, surrounded by ``(`` and ``)`` in PDF
+      break;
+    case PPSTRING_BASE16: // hex string, surrounded by ``<`` and ``>`` in PDF
+      break;
+    case PPSTRING_BASE85: // base85 string surrounded by ``<~`` and ``~>`` in PDF
+      break;
+  }
+
+The last is actually Postscript specific, not used in PDF, but I think it might appear in contents streams...
+No matter how the string is given in PDF (plain or hex), here are two functions to
+switch between encoded and decoded strings forms::
+
+  ppstring ppstring_decoded (ppstring string); // returns decoded string possibly with PDF escapes
+  ppstring ppstring_encoded (ppstring string); // returns encoded string with no PDF escapes
+
+For hex strings, encoded form contains hex digits, while decoded form contains arbitrary bytes (the result of hex decoding).
+Plain strings usually contains printable ASCII characters, but they might contain any binary data.
+As with names, objects parser produces both forms. The raw form with PDF escapes (or raw hex form) is considered the main one.
+Eg. when you access ``obj->string`` you always get the encoded form. At any moment you can switch to its alter ego.
+
+No matter if the string is plain or hex, if its first two bytes (decoded) are UTF16 BOM, the string
+is considered unicode. ``ppstring`` object *knows* it is unicode or not::
+
+  switch (ppstring_utf(string))
+  {
+    case PPSTRING_UTF16LE: // unicode string, utf16le
+      break;
+    case PPSTRING_UTF16BE: // unicode string, utf16be
+      break;
+    default:               // no unicode
+  }
+
+Or simply::
+
+  if (ppstring_utf(string) != 0) {
+    // handle unicode string
+  }
+
+If the string is unicode, BOM remains the part of the string  -- ``pplib`` parser does not strip it.
+Unicode or not, encoded or decoded, strings are always C-arrays of bytes and ``ppstring_size()``
+always returns the size in bytes.
+
+Array
+-----
+
+PDF arrays are represented as ``pparray`` type, which is C-array of ``ppobj`` structures.
+To get the size::
+
+  size_t pparray_size(pparray *array) // macro, returns the number of array items
+
+To get ``ppobj *`` at a given index::
+
+  ppobj * pparray_at(array, index)  // macro, returns ppobj * (no index check)
+  ppobj * pparray_get(array, index) // macro, returns ppobj * or NULL (with index check)
+  ppobj * pparray_get_obj (pparray *array, size_t index);  // function equiv to pparray_get()
+
+Iterating over array elements::
+
+  pparray *array;
+  size_t index, size;
+  ppobj *obj;
+  for (size = pparray_size(array), pparray_first(array, index, obj); index < size; pparray_next(index, obj))
+  {
+    // do something with index and obj
+  }
+
+There is no magic first/next macros, just iteration over pointers. One could also use something like::
+
+  for (index = 0, size = array->size; index < size; ++index)
+  {
+    obj = pparray_at(array, index);
+    // do something with index and obj
+  }
+
+When getting values from array and expecting a result of known type, use one of the following::
+
+  int pparray_get_bool (pparray *array, size_t index, int *v);    // get boolean value
+  int pparray_get_int (pparray *array, size_t index, ppint *v);   // get ppint value
+  int pparray_get_uint (pparray *array, size_t index, ppuint *v); // get ppuint value
+  int pparray_get_num (pparray *array, size_t index, ppnum *v);   // get ppnum value
+  ppname pparray_get_name (pparray *array, size_t index);         // get ppname value
+  ppstring pparray_get_string (pparray *array, size_t index);     // get ppstring value
+  pparray * pparray_get_array (pparray *array, size_t index);     // get pparray * value
+  ppdict * pparray_get_dict (pparray *array, size_t index);       // get ppdict * value
+  ppref * pparray_get_ref (pparray *array, size_t index);         // get ppref * value
+
+As with ``ppobj_get_*`` suite, numeric types getters set the value of a given type and returns 1, if the type matches.
+Otherwise sets nothing and returns 0. Other getters return the value if the type matches, or NULL.
+
+Every function from ``pparray_get_*`` suite have its ``pparray_rget_*`` counterpart that
+that dereferences indirect objects (as explained for ``ppobj_rget_*`` getters). Note that
+there is no ``pparray_get_stream()`` function, as streams in PDF are always indirect.
+To get the stream from array use::
+
+  ppstream * pparray_rget_stream (pparray *array, size_t index);
+
+Dict
+----
+
+PDF dicts are represented as ``ppdict`` structure, which is C-array of ``ppobj`` with parallel
+C-array of ``ppname`` pointers. To get the size of a dict::
+
+  size_t ppdict_size(ppdict *dict) // macro, returns the number of key-val pairs
+
+To get the value at a given index (integer)::
+
+  ppobj * ppdict_at(ppdict *dict, index) // macro, no index check
+
+To get the name (key) at a given index::
+
+  ppname ppdict_key(ppdict *dict, index) // macro, no index check
+
+To iterate over dict key-val pairs::
+
+  ppdict *dict;
+  ppname *pkey;
+  ppobj *obj;
+
+  for (ppdict_first(dict, pkey, obj); *pkey != NULL; ppdict_next(pkey, obj))
+  {
+    // do something with *pkey and obj
+  }
+
+There is no magic in first/next macros, just iteration through keys and values lists pointers.
+For convenient iteration, a list of keys is terminated with NULL, so in the code above ``*pkey != NULL``
+is used as the loop condition. One may also iterate via indices::
+
+  ppdict *dict;
+  size_t index, size;
+  ppname key;
+  ppobj *obj;
+  for (index = 0, size = ppdict_size(dict); index < size; ++index)
+  {
+    key = ppdict_key(dict, index);
+    obj = ppdict_at(dict, index);
+    // do something with key and obj
+  }
+
+To get the object associated with a given name, use one of the following::
+
+  ppobj * ppdict_get_obj (ppdict *dict, const char *name);
+  int ppdict_get_bool (ppdict *dict, const char *name, int *v);
+  int ppdict_get_int (ppdict *dict, const char *name, ppint *v);
+  int ppdict_get_uint (ppdict *dict, const char *name, ppuint *v);
+  int ppdict_get_num (ppdict *dict, const char *name, ppnum *v);
+  ppname ppdict_get_name (ppdict *dict, const char *name);
+  ppstring ppdict_get_string (ppdict *dict, const char *name);
+  pparray * ppdict_get_array (ppdict *dict, const char *name);
+  ppdict * ppdict_get_dict (ppdict *dict, const char *name);
+  ppref * ppdict_get_ref (ppdict *dict, const char *name);
+
+Note that all getters accepts ``const char *`` as key, so it is ok to say::
+
+  ppdict_rget_dict(dict, "Resources");
+
+as well as::
+
+  ppdic_rget_dict(dict, name); // ppname name
+
+Every ``ppdict_get_*`` getter has ``ppdict_rget_*`` counterpart that dereferences
+indirect objects if necessary. Note that there is no ``ppdict_get_stream()`` function,
+but there is::
+
+  ppstream * ppdict_rget_stream (ppdict *dict, const char *name);
+
+So far dicts comes with no names mapping, so by-name dict accessors perform a linear search
+through the keys list. PDF dicts are usually small, so it is fast enough.
+Building names lookup for every dict in PDF makes no sense I think, as ``pplib`` applications
+will query just several dicts I guess.. However, some apps may extensively query
+resources, which may refer to hundreds of objects (eg. images). So some mapping for dicts
+is still considered.
+
+Stream
+------
+
+PDF streams are represented as ``ppstream`` objects. To get the stream dict::
+
+  ppdict * ppstream_dict(ppstream *stream) // macro
+
+To read the stream data::
+
+  uint8_t * ppstream_first (ppstream *stream, size_t *size, int decode);
+  uint8_t * ppstream_next (ppstream *stream, size_t *size);
+  void ppstream_done (ppstream *stream);
+
+Both ``first` and ``next`` functions return a chunk of stream data and sets the ``size`` of the chunk.
+``decode`` parameter tell the reader to decompress the stream (1) or return raw (0). A call to ``ppstream_next()``
+must be preceeded by ``ppstream_first()``. Once you're done with the stream, you have to call ``ppstream_done()``,
+no matter if the stream has been read to the end or not. The stream data iterator in use::
+
+  uint8_t *data;
+  size_t size;
+  ppstream *stream;
+  int decode = 1; // 1 - get decompressed, 0 - get raw
+
+  for (data = ppstream_first(stream, &size, decode); data != NULL; data = ppstream_next(stream, &size))
+  {
+    // do something with data and its size
+  }
+  ppstream_done(stream);
+
+Every subsequent iterator call invalidates the previous reader output, so you have to utilize the returned chunk
+of data just after you ot that. So the following is wrong::
+
+  data1 = ppstream_first(stream, &size, 1);
+  data2 = ppstream_next(stream, &size);
+  data3 = ppstream_next(stream, &size);
+  some_output(data1, size);
+  some_output(data2, size);
+
+The reader calls usually return the same pointer to internal buffer, just filled with a different data.
+``pplib`` allocates reasonably large buffer and fills that buffer on subsequent calls to the reader.
+
+If the source stream has no compression, using both ``decode == 1`` and ``decode == 0`` should give the same result.
+You can check if the stream is actually compressed with::
+
+  ppstream_compressed(stream) // macro, returns non zero if /Filter is present
+
+It might be necessary to load the entire stream data at once::
+
+  uint8_t * ppstream_all (ppstream *stream, size_t *size, int decode);
+
+If the initial buffer size is insufficient, it grows until the entire stream data is loaded. You must call
+``ppstream_done(stream)`` after using returned data.
+
+``ppstream_done()`` doesn't invalidate the stream object, it just closes its internal reader.
+The stream itself remains a valid object (eg. one can read it again if necessary),
+but the reader buffer is released. It is actually not freed but kept for future the reuse with that on some other stream,
+but you still need to mark it ready for reuse to avoid allocating a separate buffer for every stream you're going to read.
+
+Stream data readers will return ``NULL`` if you haven't close the previous reader process  with ``ppstream_done()``. All below is wrong::
+
+  data1 = ppstream_all(stream, &size, 1);
+  data2 = ppstream_all(stream, &size, 1); // data2 == NULL
+  // or
+  data1 = ppstream_first(stream, &size, 1);
+  data2 = ppstream_first(stream, &size, 1); // data2 == NULL
+  // or
+  data1 = ppstream_first(stream, &size, 1);
+  data2 = ppstream_all(stream, &size, 1); // data2 == NULL
+
+To avoid unnecessary dependencies, ``pplib`` does not support image filters (``/DCT``, ``/JPX``, ``/JBIG``, ``/CCITT``).
+But it is ok to read the stream with ``decode`` set to 1 on such streams. ``pplib`` assumes that the image is the
+final/target stream form and just returns it as-is. Eg. in the case of JPEG (``/DCT`` filtered) image both calls should
+give the same results::
+
+  ppstream_all(jpegstream, &jpegsize, 0); // don't decode, return what's there
+  ppstream_all(jpegstream, &jpegsize, 1); // decode but found image filter, effectively the same
+
+A bit more about streams memory. As mentioned, ``pplib`` allocates buffers for stream readers. After ``ppstream_done()``,
+the stream no longer *owns* the buffer space. But the buffer may remain allocated, to be reused with future readers.
+``pplib`` keeps a pool of several buffers. This means, that when you use stream readers, ``pplib`` eats
+some memory (1MB or so) that is not freed, even if no streams are used. And even if you free all objects.
+If you suffer from this, you can optionally use a pair of functions::
+
+  void ppstream_init_buffers (void);
+  void ppstream_free_buffers (void);
+
+The first initializes buffers pool, unless done so far. Currently ``pplib`` cares of it before opening every stream reader,
+so it is not obligatory. The second frees a pool of buffers. The intended use is to call ``ppstream_init_buffers()`` once
+as kind of library initializer and to call ``ppstream_free_buffers()`` once, as the library finalizer.
+
+Filters
+-------
+
+In version v1.00 (20190916) ``ppstream`` API has been extended with filters information.
+``ppstream`` knows its filter(s) and keps it as ``stream->filter``::
+
+  // ppstream *stream;
+  ppstream_filter *info = &stream->filter;
+
+``ppstream_filter`` is the following structure::
+
+  typedef struct {
+    ppstreamtp *filters; // c-array of filter identifiers (enum integers)
+    ppdict **params;     // c-array of ppdict pointers
+    size_t count;        // number of filters, length of the arrays (typically 1)
+  } ppstream_filter;
+
+If ``count > 0`` then ``filters`` member is not NULL. Filters array keeps integer constants::
+
+  PPSTREAM_BASE16    /* /ASCIIHexDecode  */
+  PPSTREAM_BASE85    /* /ASCII85Decode   */
+  PPSTREAM_RUNLENGTH /* /RunLengthDecode */
+  PPSTREAM_FLATE     /* /FlateDecode     */
+  PPSTREAM_LZW       /* /LZWDecode       */
+  PPSTREAM_CCITT     /* /CCITTFaxDecode  */
+  PPSTREAM_DCT       /* /DCTDecode       */
+  PPSTREAM_JBIG2     /* /JBIG2Decode     */
+  PPSTREAM_JPX       /* /JPXDecode       */
+  PPSTREAM_CRYPT     /* /Crypt           */
+
+Params array keeps corresponding filter parameters (``/DecodeParms``) if present. ``params`` member is not NULL
+if ``count > 0`` and the stream dict has ``/DecodeParms`` entry. Even if ``params`` is there,
+for every N-th filter, ``params[N]`` may be NULL (corresponding to PDF ``null``).
+
+``stream->filter`` keeps the source stream filter information, which may not correspond to the result of stream readers
+(``ppstream_first()``, ``ppstream_next()``, ``ppstream_all()``). The get the filters info relevant to the result from readers::
+
+  void ppstream_filter_info (ppstream *stream, ppstream_filter *info, int decode);
+
+The function fills ``ppstream_filter`` structure according to the expected result from stream readers (example 3 shows
+how to use it to reconstruct ``/Filter`` and ``/DecodeParms`` when copying the stream to some other PDF).
+
+To convert filter identifier (``ppstreamtp``) to a corresponding PDF filter name::
+
+  const char * ppstream_filter_name[];
+
+To covert ``ppname`` to filter identifier::
+
+  int ppstream_filter_type (ppname filtername, ppstreamtp *filtertype);
+  // returns 1 and sets filtertype if filtername is the proper filter name
+
+Additional information about the stream can be fetched from macros::
+
+  ppstream_compressed(stream) /* stream->flags & (PPSTREAM_FILTER|PPSTREAM_IMAGE) */
+  ppstream_filtered(stream)   /* stream->flags & PPSTREAM_FILTER */
+  ppstream_image(stream)      /* stream->flags * PPSTREAM_IMAGE */
+
+``stream->flags`` is a binary sum of the following::
+
+  PPSTREAM_FILTER        /* set iff the stream filters list has one of: BASE16, BASE85, RUNLENGTH, FLATE, LZW */
+  PPSTREAM_IMAGE         /* set iff the stream filters list has one of: CCITT, DCT, JBIG2, JPX */
+  PPSTREAM_ENCRYPTED     /* set iff the stream is encrypted */
+  PPSTREAM_ENCRYPTED_OWN /* set iff the stream has own CRYPT filter */
+
+Note that ``PPSTREAM_COMPRESSED`` is not there any longer, use ``ppstream_compressed()`` instead.
+And there is some more, see ``ppapi.h``.
+
+Ref
+---
+
+Indirect objects are represented as ``ppref`` structure. To get the object that the
+reference refers to::
+
+  ppobj * ppref_obj(ppref *ref) // macro
+
+``ppref`` structure also keeps the reference number and version, a pointer to cross reference table it belongs
+to and others, but I guess you won't need anything but the referenced object. ``pplib`` parser resolves references
+on-fly. So if there is a dict with indirect objects::
+
+  <<
+    /Type /Page
+    /Resources 123 0 R
+    ...
+  >>
+
+the parser will produce ``ppdict`` with ``Resources`` key pointing the proper ``ppref *`` value.
+If you need more, access ``ppref`` members::
+
+  struct ppref {
+    ppobj object;           // target object
+    ppuint number, version; // identifiers
+    size_t offset;          // file offset (useless for you, may be zero for compressed objects)
+    ppuint length;          // the length of the original object data
+    ppxref *xref;           // cross reference table it belongs to
+  };
+
+
+XRef
+----
+
+Cross reference table is exposed as ``ppxref`` (incomplete type, you can only oprate on its pointer).
+To get top document xref::
+
+  ppxref * ppdoc_xref (ppdoc *pdf);
+
+To get previous (older) xref::
+
+  ppxref * ppxref_prev (ppxref *xref);
+
+To find an object of a given refnumber::
+
+  ppref * ppxref_find (ppxref *xref, ppuint refnumber);
+
+[Note: since pplib v0.98 in case of documents with incremental update, ``ppxref_find()`` returns
+the newest available version of a given object rather than the object in a given body.]
+
+PDF
+---
+
+PDF document is represented as ``ppdoc`` structure (incomplete type, you can only operate on its pointer).
+To load a document from file::
+
+  ppdoc * ppdoc_load (const char *filename);
+
+To load a document from memory data::
+
+  ppdoc * ppdoc_mem (const void *data, size_t size);
+
+The data is assumed to be a buffer allocated with ``malloc`` - it is freed when destroying ``ppdoc``.
+
+Both loaders returns ``NULL`` on failure.
+
+To free ``ppdoc`` and all objects it refers to::
+
+  void ppdoc_free (ppdoc *pdf);
+
+So far we haven't mention about any explicit object reclaimers. There are no dedicated ``free`` functions
+for other objects. You don't allocate or free objects yourself. ``ppdoc`` object is an owner of all
+beings it refers to. It also means that every object described so far is alive as long as the containing
+``ppdoc`` is alive.
+
+To access main PDF dicts::
+
+  ppdict * ppdoc_trailer(ppdoc *pdf); // returns top xref trailer dict
+  ppdict * ppdoc_catalog(ppdoc *pdf); // returns catalog referred from the trailer
+  ppdict * ppdoc_info(ppdoc *pdf);    // returns info dict referred from the trailer
+
+To get the PDF version::
+
+  const char * ppdoc_version_string (ppdoc *pdf);    // version string
+  int ppdoc_version_number (ppdoc *pdf, int *minor); // minor and major numbers
+
+To get the file size of the source PDF document::
+
+  size_t ppdoc_file_size (ppdoc *pdf);
+
+To get the number of objects in all xrefs::
+
+  ppuint ppdoc_objects (ppdoc *pdf);
+
+To get the approx usage of memory::
+
+  size_t ppdoc_memory (ppdoc *pdf, size_t *waste);
+
+Encryption
+----------
+
+``pplib`` handles encrypted (password protected) documents. If a document is encrypted, most of strings and streams are ciphered.
+In that form they are unreadable and rather useless, you can't even rewrite such strings/streams as-is to a different PDF output.
+It is a common practise to *protect* documents with an empty password. Such documents remain readable in Acrobat (just opens them without prompting
+for a password), but some features (eg. printing) may restricted by the application.
+
+When ``pplib`` detects encryption, it follows Acrobat approach and first tries an empty password. If it succeeds, ``pplib`` proceeeds normally, providing
+an access to decrypted strings and streams, as if they weren't ciphered. If the document is protected with non-empty password, ``pplib`` gives
+a way to provide a password and proceed. Until you provide a password, ``ppdoc`` object returned by ``ppdoc_load()`` function has all object wntries
+set to ``null``.
+
+After loading a document you should check encryption status with::
+
+  ppcrypt_status ppdoc_crypt_status (ppdoc *pdf);
+
+``ppcrypt_status`` (integer) may have the following values:
+
+  ``PPCRYPT_NONE`` - no encryption, go ahead
+  ``PPCRYPT_DONE`` - encryption present but password succeeded, go ahead
+  ``PPCRYPT_PASS`` - encryption present, need non-empty password
+  ``PPCRYPT_FAIL`` - invalid or unsupported encryption (eg. undocumented in pdf spec)
+
+If a password is needed, you can provide one with::
+
+  ppcrypt_status ppdoc_crypt_pass (ppdoc *pdf, const void *userpass, size_t userpasslength,
+                                               const void *ownerpass, size_t ownerpasslength);
+
+Well, yes, there are actually two passwords in encrypted documents. Relation between them is obscure to me, but enough
+to know that having one of them is enough to decrypt the document. If you know the password, you probably mean
+``userpass``, in which case you should put ``NULL`` as ``ownerpass``. The function returns ``PPCRYPT_DONE`` if the password
+succeeds and the previous status otherwise. Your custom loader function may look like that::
+
+  ppdoc *pdf;
+  pdf = ppdoc_load("file.pdf");
+  if (pdf == NULL)
+    return NULL;
+  switch (ppdoc_crypt_status(pdf))
+  {
+    case PPCRYPT_NONE:
+    case PPCRYPT_DONE:
+      return pdf;
+    case PPCRYPT_PASS:
+      if (ppdoc_crypt_pass(pdf, "dummy", 5, NULL, 0) == PPCRYPT_DONE ||
+          ppdoc_crypt_pass(pdf, NULL, 0, "dummy", 5) == PPCRYPT_DONE)
+        return pdf;
+      printf("sorry, password needed\n");
+      ppdoc_free(pdf);
+      return NULL;
+    case PPCRYPT_FAIL:
+      printf("sorry, encryption failed\n");
+      ppdoc_free(pdf);
+      return NULL;
+  }
+
+[If you get ``PPCRYPT_FAIL`` it might mean *I failed*, so treat as a bug.]
+
+If you'd like to know what permissions are given/restricted to encrypted document::
+
+  ppint ppdoc_permissions (ppdoc *pdf);
+
+Returned value can be queried with the following binary flags (you can verify with Acrobat *File -> Properties -> Security* tab)::
+
+  PPDOC_ALLOW_PRINT       // printing
+  PPDOC_ALLOW_MODIFY      // filling form fields, signing, creating template pages
+  PPDOC_ALLOW_COPY        // copying, copying for accessibility
+  PPDOC_ALLOW_ANNOTS      // filling form fields, copying, signing
+  PPDOC_ALLOW_EXTRACT     // contents copying for accessibility
+  PPDOC_ALLOW_ASSEMBLY    // (no effect)
+  PPDOC_ALLOW_PRINT_HIRES // (no effect)
+
+``pplib`` does absolutelly nothing with permissions, it cares only to decrypt the document. As mentioned, encryption applies to strings
+and streams. ``pplib`` decrypt strings when parsing document objects, so the result you get is *normal* (not ciphered).
+Streams are decrypted whenever you access them. Even if you ask for a raw stream data, you'll get a raw (compressed) stream, but decrypted.
+So except the check to ``ppdoc_crypt_status()``, you shouldn't bother about encryption.
+
+In encrypted documents most of streams are encrypted. To check if a given stream is encrypted::
+
+  ppstream_encrypted(stream) // macro, returns non-zero if encrypted
+
+Encryption is independent from compression, don't confuse with ``ppstream_compressed()``
+
+Pages
+-----
+
+Several helpers to deal with pages. To get the number of pages::
+
+  ppuint ppdoc_page_count (ppdoc *pdf);
+
+To access the root pages tree node::
+
+  ppref * ppdoc_pages(ppdoc *pdf);
+
+To get the page reference at a given index::
+
+  ppref * ppdoc_page (ppdoc *pdf, ppuint index);
+
+``index`` is a page number. First page has number 1. For index out of bounds ``ppdoc_page()`` returns NULL.
+Iterating over pages using index from 1 to ``ppdoc_page_count()`` and calling ``ppdoc_page()`` on each iteration
+would be suboptimal. Here is a dedicted iterator for this::
+
+  ppref *  ppdoc_first_page (ppdoc *pdf);
+  ppref * ppdoc_next_page (ppdoc *pdf);
+
+The iterator in use::
+
+  ppdoc *pdf;
+  ppref *ref;
+  ppdict *dict;
+  int pageno;
+
+  pdf = ppdoc_load("file.pdf");
+  for (ref = ppdoc_first_page(pdf), pageno = 1; ref != NULL; ref = ppdoc_next_page(pdf), ++pageno)
+  {
+    dict = ppref_obj(obj)->dict; // take for granted it is a dict
+    // do something with the page dict
+  }
+
+Functions related to pages return ``ppref *`` ensured to contain dict object, so you don't need sanity
+type checks here.
+
+Contents
+--------
+
+PDF page contents can be given as a stream or array of streams. Here is a convenience iterator over page
+contents streams::
+
+  ppstream * ppcontents_first (ppdict *dict);
+  ppstream * ppcontents_next (ppdict *dict, ppstream *stream);
+
+A complete example of contents stream parser use is given below (example 2).
+But before we get there, we need to introduce ``ppcontext`` object. Conceptually,
+``ppcontext`` is an owner (memory handler) of objects created on demand (beyond the ``ppdoc``).
+So far used only with contents stream parser, which might produce quite some data that we want
+to release just after used. To create a new context::
+
+  pcontext * ppcontext_new (void);
+
+It initializes a new context and its internal memory heap, taking about 64kB on start. After that,
+the context is ready to produce objects (contents parsing functions below). Once objects produced
+from a given context are no longer needed::
+
+  void ppcontext_done (ppcontext *context);
+
+It restores the context to its initial state, as after ``ppcontext_new()``. It means that the context
+is ready to produce another bunch of beings (in the example below, all objects from the next page contents).
+Once the context is not needed anymore::
+
+  void ppcontext_free (ppcontext *context);
+
+Now, contents stream parser functions take the context as an argument. Iterator form of contents stream parser
+that allows to process the contents operator by operator::
+
+  ppobj * ppcontents_first_op (ppcontext *context, ppstream *stream, size_t *psize, ppname *pname);
+  ppobj * ppcontents_next_op (ppcontext *context, ppstream *stream, size_t *psize, ppname *pname);
+
+Returned ``ppobj *`` is a pointer to operands list. ``*psize`` is the number of operands on stack.
+The operator itself is stored as ``*pname``.
+
+To parse the entire contents stream at once with no stop at every operator::
+
+  ppobj * ppcontents_parse (ppcontext *context, ppstream *stream, size_t *psize);
+
+Returns probably quite long list of all parsed objects (operands and operatos) in one piece.
+The number of objects is stored to ``*psize``.
+
+[Contents may contain so called inline images, that breaks a simple scheme of operands / operator syntax::
+
+  BI <keyval pairs> ID <binary image data> EI
+
+Contents parser treats this genuine triplet as a single piece, producing two operands (dict and string)
+followed by ``EI`` operator name.]
+
+Boxes
+-----
+
+Boxes (rectangles) in PDF are roughly 4-number arrays, but with a special intent.
+``pplib`` provides a basic interface for these special arrays::
+
+  typedef struct {
+    ppnum lx, ly, rx, ry;
+  } pprect;
+
+This type is used only by helper functions - PDF parser is not aware of the rectangle type.
+To convert ``pparray`` to ``pprect``::
+
+  pprect * pparray_to_rect (pparray *array, pprect *rect); // returns rect or NULL
+
+In example::
+
+  pprect rect;
+  if (pparray_to_rect(array, &rect) != NULL)
+   ; // do something with rect
+
+To get some image bounding box::
+
+  pprect * ppdict_get_rect (ppdict *dict, const char *name, pprect *rect);
+  // eg. ppdict_get_rect(imagedict, "BBox", &rect)
+
+To get some page box::
+
+  pprect * ppdict_get_box (ppdict *dict, const char *name, pprect *rect);
+  // eg. ppdict_get_box(pagedict, "MediaBox", &rect)
+
+The later not only checks the pagedict, but also goes through parent page nodes.
+
+Transforms
+----------
+
+Transformations are given as 6-number arrays, but with a special intent.
+``pplib`` provides a basic interface for these special arrays::
+
+  typedef struct {
+    ppnum xx, xy, yx, yy, x, y;
+  } ppmatrix;
+
+This type is used only by helper functions - PDF parser is not aware of the matrix type.
+To convert ``pparray`` to ``ppmatrix``::
+
+  ppmatrix * pparray_to_matrix (pparray *array, ppmatrix *matrix);
+
+In example::
+
+  ppmatrix matrix;
+  if (pparray_to_matrix(array, &matrix) != NULL)
+    ; // do something with matrix
+
+To get the matrix from dict::
+
+  ppmatrix * ppdict_get_matrix (ppdict *dict, const char *name, ppmatrix *matrix);
+  // eg. ppdict_get_matrix(imagedict, "Matrix", &matrix)
+
+Errors handling
+---------------
+
+``pplib`` is not verbose, but might happen that it needs to log some error message, eg. when parsing
+of some PDF boject fails due to invalid offsets. By default, ``pplib`` prints the message to stdout, eg.::
+
+  invalid 123 0 R object at offset 123123
+
+To replace the default logger, you can provide your own::
+
+  void pplog_callback (pplogger_callback logger, void *alien);
+
+``pplogger_callback`` is a function::
+
+  void your_callback (const char *message, void *alien);
+
+In example, to redirect messages to stderr you may define a function::
+
+  void your_callback (const char *message, void *alien)
+  {
+    fprintf((FILE *)alien, "\nooops: %s\n", message);
+  }
+
+Then set the callback somewhere before loading documents::
+
+  pplog_callback(your_callback, stderr);
+
+(example 2 uses that).
+
+To set the default log messages prefix, eg. ``pplib:``, use::
+
+  int pplog_prefix (const char *prefix)
+
+Default is empty. The function succeeds if provided prefix is reasonably short (less then 32 bytes).

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppapi-2.x.rst.txt
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppapi-2.x.rst.txt	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppapi-2.x.rst.txt	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,937 @@
+
+``pplib`` 2.x
+=============
+
+``pplib`` is a library for raw PDF access. It parses PDF documents and provides an interface to access document structures in C.
+
+C-API
+=====
+
+Types
+-----
+
+``pplib`` defines several C-types to represent PDF types:
+
+- ``ppbyte`` - char
+- ``ppint`` - signed integer (``int64_t``)
+- ``ppnum`` - real number (double)
+- ``ppname`` - PDF name
+- ``ppstring`` - PDF string
+- ``pparray`` - PDF array
+- ``ppdict`` - PDF dict
+- ``ppstream`` - PDF stream
+- ``ppref`` - PDF indirect reference
+- ``ppobj`` - a container of all above
+
+Among ``ppint`` and ``ppnum``, we also use ``ppuint`` - unsigned integer (machine word, alias to ``size_t``).
+
+Other API types:
+
+- ``ppdoc`` - PDF document
+- ``ppxref`` - cross-references table
+- ``ppcontext`` - ... later
+- ``pprect`` - rectangle
+- ``ppmatrix`` - matrix
+
+Integer and number are as simple types. Names and strings used to be aliases to ``char *``
+in ``pplib 1.x``, now they are structures; all related API functions operate on pointers.
+Other types (array, dict, stream, reference, object container, xref, doc) are C-structures,
+and you operate it their pointers. So when you declare a simple type variable you say::
+
+  ppuint u;
+  ppnum n;
+  ...
+
+And when you declare a compound type you operate on pointers::
+
+  ppobj *obj;
+  ppname *name;
+  ppstring *string;
+  pparray *array;
+  ppdict *dict;
+  ppstream *stream;
+  ppref *ref;
+  ppdoc *pdf;
+
+Most of those C-types are defined in library header ``ppapi.h`` (complete types). Some others are incomplete
+(eg. you can't say ``sizeof(ppdoc)`` or ``sizeof(ppxref)``). This is to avoid unnecesary dependencies in
+the header. The library itself uses ``pplib.h`` header but for auxilary applications including a standalone
+``ppapi.h`` header should be enough.
+
+``pplib`` was designed having **read-only** PDF access in mind. Even if some structure is completelly exposed,
+so that you can directly access its members, you should treat them as read-only. I don't make them ``const`` because
+then all variable declarations would need to be ``const``, which is annoying, and I'd need some trickery in the library
+internals to unconst. Besides, nothing is really const for C type casts.
+
+Object
+------
+
+A common container for all elementary PDF object types is ``ppobj`` structure. ``ppobj`` has a type identifier
+(integer) and union of values::
+
+  struct ppobj {
+    ppobjtp type;
+    union {
+      ppint integer;
+      ppnum number;
+      ppname *name;
+      ppstring *string;
+      pparray *array;
+      ppdict *dict;
+      ppstream *stream;
+      ppref *ref;
+      void *any;
+    };
+  };
+
+Object type is one of constants (enum)::
+
+  PPNONE
+  PPNULL
+  PPBOOL
+  PPINT
+  PPNUM
+  PPNAME
+  PPSTRING
+  PPARRAY
+  PPDICT
+  PPSTREAM
+  PPREF
+
+The type determines the structure member you're allowed to access::
+
+  ppobj *obj;
+  ...
+  switch (obj->type)
+  {
+    case PPNONE: // shouldn't actually happen, indicates some failure
+      break;
+    case PPNULL: // valid PDF null object, no value
+      break;
+    case PPBOOL: // do something with obj->integer (ppint), value 0 or 1
+      break;
+    case PPINT:  // do something with obj->integer (ppint)
+      break;
+    case PPNUM:  // do something with obj->number (ppnum)
+      break;
+    case PPNAME: // do something with obj->name (ppname *)
+      break;
+    case PPSTRING: // do something with obj->string (ppstring *)
+      break;
+    case PPARRAY: // do something with obj->array (pparray *)
+      break;
+    case PPDICT: // do something with obj->dict (ppdict *)
+      break;
+    case PPSTREAM: // do something with obj->stream (ppstream *)
+      break;
+    case PPREF: // do something with obj->ref (ppref *)
+      break;
+  }
+
+More often then not you know exactly what type of object value is expected, in which case
+you may use one of the following macros::
+
+  // returns 1 if o->type is PPNULL
+  int ppobj_get_null(o)         \
+
+  // if o->type is PPBOOL, sets int v to 0 or 1 and returns 1, 0 otherwise
+  int ppobj_get_bool(o, v)
+
+  // if o->type is PPINT, sets ppint v and returns 1, 0 otherwise
+  int ppobj_get_int(o, v)
+
+  // if o->type is PPINT and >= 0, sets ppuint v and returns 1, 0 otherwise
+  int ppobj_get_uint(o, v)
+
+  // if o->type is PPNUM or PPINT, sets ppnum v and returns 1, 0 otherwise
+  int ppobj_get_num(o, v)
+
+  // if o->type is PPNAME returns the name, NULL otherwise
+  ppname * ppobj_get_name(o)
+
+  // if o->type is PPSTRING returns the string, NULL otherwise
+  ppstring * ppobj_get_string(o)
+
+  // if o->type is PPARRAY returns the array, NULL otherwise
+  pparray * ppobj_get_array(o)
+
+  // if o->type is PPDICT returns the dict, NULL otherwise
+  ppdict * ppobj_get_dict(o)
+
+  // if o->type is PPSTREAM returns the stream, NULL otherwise
+  ppstream * ppobj_get_stream(o)
+
+  // if o->type is PPREF returns the reference, NULL otherwise
+  ppref * ppobj_get_ref(o)
+
+Note the coercion from integer to real number, but not reverse. In practise, whenever you expect a real number,
+you should also handle integer (eg. '1' used instead of '1.0' is pretty common in PDF).
+
+It is a common case that the object is given as an indirect reference, but what you actually
+want is not the reference, but the object referred by it. Here is a helper for it::
+
+  // if o->type is PPREF, returns what the reference points, otherwise returns o
+  ppobj * ppobj_rget_obj(o)
+
+Also every ``ppobj_get_*`` macro has ``ppobj_rget_*`` counterpart that makes a check
+for the expected type, but if the object is PPREF, it jumps to the target object.
+So for example ``ppobj_rget_dict(obj)`` will return dict if ``obj`` is of type PPDICT
+or if it is of type PPREF and ``obj->ref`` hosts an object of type PPDICT.
+
+Names
+-----
+
+PDF names are represented as ``ppname`` pointer (``ppname`` used to be an alias to ``char *``, now it is a structure).
+To access the name data::
+
+  ppbyte * ppname_data(name) // name->data, bytes array
+
+For convenient use in C, names are ``'\0'`` terminated. But to get the length of name better always use
+``ppname_size()`` macro. ``ppname`` object knows its size, don't use ``strlen()``::
+
+  size_t ppname_size(ppname name); // name->size, the length of name in bytes
+
+In current implementation names are not hashed anyhow, so name-to-name comparison is not smarter than ``memcmp()``.
+Use macros::
+
+  int ppname_is(ppname name, "literal");    // to compare ppname with C-literal string
+  int ppname_eq(ppname name, ppname other); // to compare ppname with a different name
+
+If you use ``pplib`` to parse contents streams, you may need to distinguish names from operators
+(more precisely executable names). Names in PDF are preceeded by '/', executable names aren't. In both
+cases PDF parser will produce ``ppname`` but the result can be distingushed with::
+
+  int ppname_exec(ppname name); // macro, returns non-zero if the name is executable
+
+Names are kept in their raw form, with possible PDF specific escapes (in text below we call it **encoded** form).
+Leading '/' is omitted. One may need a decoded name, with no PDF escapes.
+A pair of functions provides a simple interface to switch between those two forms::
+
+  // these helpers rely on name->alterego member
+  ppname * ppname_decoded (ppname *name); // returns decoded (unescaped) form of the name
+  ppname * ppname_encoded (ppname *name); // returns encoded (escaped) form of the name
+  ppbyte * ppname_decoded_data (ppname *name);
+  ppbyte * ppname_encoded_data (ppname *name);
+
+In pretty most cases a PDF name contains only letters (no special characters, no escapes), so decoded and encoded forms are identical.
+In that case both functions simply return the argument. It is ok to call ``ppname_decoded()`` on already decoded form
+and ``ppname_encoded()`` on already encoded form. Both forms are produced by PDF objects parser, so accessing ``ppname`` alter ego
+in whatever direction needs no extra decoding or allocation costs (the cost is paid by parser).
+
+String
+------
+
+PDF strings have the same internal construction as names, so most of names description above applies to strings as well.
+``ppstring`` is a structure (used to be an alias to ``char *``). ``string->data`` is ``\0``-terminated c-array of ``ppbytes``.
+To get the data::
+
+  ppbyte * ppstring_data(ppstring *string); // string->data, macro
+
+To get the size of the string::
+
+  size_t ppstring_size(ppstring *string); // macro, returns the length of the string in bytes
+
+Strings are provided in their raw form, preserving PDF specific escapes, but with no
+``()`` or ``<>`` delims. To distinguish plain strings from hex strings::
+
+  int ppstring_hex(ppstring string); // macro, returns non zero if hex string
+
+Or if you prefer::
+
+  switch (ppstring_type(string))
+  {
+    case PPSTRING_PLAIN: // literal string, surrounded by ``(`` and ``)`` in PDF
+      break;
+    case PPSTRING_BASE16: // hex string, surrounded by ``<`` and ``>`` in PDF
+      break;
+    case PPSTRING_BASE85: // base85 string surrounded by ``<~`` and ``~>`` in PDF
+      break;
+  }
+
+The last is actually Postscript specific, not used in PDF, but I think it might appear in contents streams...
+No matter how the string is given in PDF (plain or hex), here are two functions to
+switch between encoded and decoded strings forms::
+
+  ppstring * ppstring_decoded (ppstring *string); // returns decoded string possibly with PDF escapes
+  ppstring * ppstring_encoded (ppstring *string); // returns encoded string with no PDF escapes
+  ppbyte * ppstring_decoded_data (ppstring *string);
+  ppbyte * ppstring_encoded_data (ppstring *string);
+
+For hex strings, encoded form contains hex digits, while decoded form contains arbitrary bytes (the result of hex decoding).
+Plain strings usually contains printable ASCII characters, but they might contain any binary data.
+As with names, objects parser produces both forms. The raw form with PDF escapes (or raw hex form) the main one.
+Eg. when you access ``obj->string`` you always get the encoded form. At any moment you can switch to its alter ego.
+
+No matter if the string is plain or hex, if its first two bytes (decoded) are UTF16 BOM, the string is unicode.
+``ppstring`` object *knows* it is unicode or not::
+
+  switch (ppstring_utf(string))
+  {
+    case PPSTRING_UTF16LE: // unicode string, utf16le
+      break;
+    case PPSTRING_UTF16BE: // unicode string, utf16be
+      break;
+    default:               // no unicode
+  }
+
+Or simply::
+
+  if (ppstring_utf(string) != 0) {
+    // handle unicode string
+  }
+
+If the string is unicode, BOM remains the part of the string  -- ``pplib`` parser does not strip it.
+Unicode or not, encoded or decoded, strings are always C-arrays of bytes and ``ppstring_size()``
+always returns the size in bytes.
+
+Array
+-----
+
+PDF arrays are represented as ``pparray`` type, which is C-array of ``ppobj`` structures.
+To get the size::
+
+  size_t pparray_size(pparray *array) // macro, returns the number of array items
+
+To get ``ppobj *`` at a given index::
+
+  ppobj * pparray_at(array, index)  // macro, returns ppobj * (no index check)
+  ppobj * pparray_get(array, index) // macro, returns ppobj * or NULL (with index check)
+  ppobj * pparray_get_obj (pparray *array, size_t index);  // function equiv to pparray_get()
+
+Iterating over array elements::
+
+  pparray *array;
+  size_t index, size;
+  ppobj *obj;
+  for (size = pparray_size(array), pparray_first(array, index, obj); index < size; pparray_next(index, obj))
+  {
+    // do something with index and obj
+  }
+
+There is no magic first/next macros, just iteration over pointers. One could also use something like::
+
+  for (index = 0, size = array->size; index < size; ++index)
+  {
+    obj = pparray_at(array, index);
+    // do something with index and obj
+  }
+
+When getting values from array and expecting a result of known type, use one of the following::
+
+  int pparray_get_bool (pparray *array, size_t index, int *v);    // get boolean value
+  int pparray_get_int (pparray *array, size_t index, ppint *v);   // get ppint value
+  int pparray_get_uint (pparray *array, size_t index, ppuint *v); // get ppuint value
+  int pparray_get_num (pparray *array, size_t index, ppnum *v);   // get ppnum value
+  ppname * pparray_get_name (pparray *array, size_t index);       // get ppname * value
+  ppstring * pparray_get_string (pparray *array, size_t index);   // get ppstring * value
+  pparray * pparray_get_array (pparray *array, size_t index);     // get pparray * value
+  ppdict * pparray_get_dict (pparray *array, size_t index);       // get ppdict * value
+  ppref * pparray_get_ref (pparray *array, size_t index);         // get ppref * value
+
+As with ``ppobj_get_*`` suite, numeric types getters set the value of a given type and returns 1, if the type matches.
+Otherwise sets nothing and returns 0. Other getters return the value if the type matches, or NULL.
+
+Every function from ``pparray_get_*`` suite have its ``pparray_rget_*`` counterpart
+that dereferences indirect objects (as explained for ``ppobj_rget_*`` getters). Note that
+there is no ``pparray_get_stream()`` function, as streams in PDF are always indirect
+(may only reside in ``ref->object.stream``). To get the stream from array use::
+
+  ppstream * pparray_rget_stream (pparray *array, size_t index);
+
+Dict
+----
+
+PDF dicts are represented as ``ppdict`` structure, which is C-array of ``ppobj`` with parallel
+C-array of ``ppname`` pointers. To get the size of a dict::
+
+  size_t ppdict_size(ppdict *dict) // macro, returns the number of key-val pairs
+
+To get the value at a given index (integer)::
+
+  ppobj * ppdict_at(ppdict *dict, index) // macro, no index bounds check
+
+To get the name (key) at a given index::
+
+  ppname * ppdict_key(ppdict *dict, index) // macro, no index bounds check
+
+To iterate over dict key-val pairs::
+
+  ppdict *dict;
+  ppname **pkey;
+  ppobj *obj;
+
+  for (ppdict_first(dict, pkey, obj); *pkey != NULL; ppdict_next(pkey, obj))
+  {
+    // do something with *pkey and obj
+  }
+
+There is no magic in first/next macros, just iteration through keys and values lists pointers.
+For convenient iteration, a list of keys is terminated with NULL, so in the code above ``*pkey != NULL``
+is used as the loop condition. One may also iterate via indices::
+
+  ppdict *dict;
+  size_t index, size;
+  ppname *key;
+  ppobj *obj;
+  for (index = 0, size = ppdict_size(dict); index < size; ++index)
+  {
+    key = ppdict_key(dict, index);
+    obj = ppdict_at(dict, index);
+    // do something with key and obj
+  }
+
+To get the object associated with a given name, use one of the following::
+
+  ppobj * ppdict_get_obj (ppdict *dict, const char *name);
+  int ppdict_get_bool (ppdict *dict, const char *name, int *v);
+  int ppdict_get_int (ppdict *dict, const char *name, ppint *v);
+  int ppdict_get_uint (ppdict *dict, const char *name, ppuint *v);
+  int ppdict_get_num (ppdict *dict, const char *name, ppnum *v);
+  ppname ppdict_get_name (ppdict *dict, const char *name);
+  ppstring ppdict_get_string (ppdict *dict, const char *name);
+  pparray * ppdict_get_array (ppdict *dict, const char *name);
+  ppdict * ppdict_get_dict (ppdict *dict, const char *name);
+  ppref * ppdict_get_ref (ppdict *dict, const char *name);
+
+Note that all getters accepts ``const char *`` as key, so it is ok to say::
+
+  ppdict_rget_dict(dict, "Resources");
+
+(the most common use I guess). But to use ``ppname`` object as a key, one have to
+use data member::
+
+  ppdic_rget_dict(dict, name->data); // ppname *name
+
+Every ``ppdict_get_*`` getter has ``ppdict_rget_*`` counterpart that dereferences
+indirect objects if necessary. Note that there is no ``ppdict_get_stream()`` function,
+but there is::
+
+  ppstream * ppdict_rget_stream (ppdict *dict, const char *name);
+
+So far dicts comes with no names mapping, so by-name dict accessors perform a linear search
+through the keys list. PDF dicts are usually small.
+
+Stream
+------
+
+PDF streams are represented as ``ppstream`` objects. To get the stream dict::
+
+  ppdict * ppstream_dict(ppstream *stream) // macro
+
+To read the stream data::
+
+  uint8_t * ppstream_first (ppstream *stream, size_t *size, int decode);
+  uint8_t * ppstream_next (ppstream *stream, size_t *size);
+  void ppstream_done (ppstream *stream);
+
+Both ``first` and ``next`` functions return a chunk of stream data and sets the ``size`` of the chunk.
+``decode`` parameter tell the reader to decompress the stream (1) or return raw (0). A call to ``ppstream_next()``
+must be preceeded by ``ppstream_first()``. Once you're done with the stream, you have to call ``ppstream_done()``,
+no matter if the stream has been read to the end or not. The stream data iterator in use::
+
+  uint8_t *data;
+  size_t size;
+  ppstream *stream;
+  int decode = 1; // 1 - get decompressed, 0 - get raw
+
+  for (data = ppstream_first(stream, &size, decode); data != NULL; data = ppstream_next(stream, &size))
+  {
+    // do something with data and its size
+  }
+  ppstream_done(stream);
+
+Every subsequent iterator call invalidates the previous reader output, so you have to utilize the returned chunk
+of data just after you ot that. So the following is wrong::
+
+  data1 = ppstream_first(stream, &size, 1);
+  data2 = ppstream_next(stream, &size);
+  data3 = ppstream_next(stream, &size);
+  some_output(data1, size);
+  some_output(data2, size);
+
+The reader calls usually return the same pointer to internal buffer, just filled with a different data.
+``pplib`` allocates reasonably large buffer and fills that buffer on subsequent calls to the reader.
+
+If the source stream has no compression, using both ``decode == 1`` and ``decode == 0`` should give the same result.
+You can check if the stream is actually compressed with::
+
+  ppstream_compressed(stream) // macro, returns non zero if /Filter is present
+
+It might be necessary to load the entire stream data at once::
+
+  uint8_t * ppstream_all (ppstream *stream, size_t *size, int decode);
+
+If the initial buffer size is insufficient, it grows until the entire stream data is loaded. You must call
+``ppstream_done(stream)`` after using returned data.
+
+``ppstream_done()`` doesn't invalidate the stream object, it just closes its internal reader.
+The stream itself remains a valid object (eg. one can read it again if necessary),
+but the reader buffer is released. It is actually not freed but kept for future the reuse with that on some other stream,
+but you still need to mark it ready for reuse to avoid allocating a separate buffer for every stream you're going to read.
+
+Stream data readers will return ``NULL`` if you haven't close the previous reader process  with ``ppstream_done()``. All below is wrong::
+
+  data1 = ppstream_all(stream, &size, 1);
+  data2 = ppstream_all(stream, &size, 1); // data2 == NULL
+  // or
+  data1 = ppstream_first(stream, &size, 1);
+  data2 = ppstream_first(stream, &size, 1); // data2 == NULL
+  // or
+  data1 = ppstream_first(stream, &size, 1);
+  data2 = ppstream_all(stream, &size, 1); // data2 == NULL
+
+To avoid unnecessary dependencies, ``pplib`` does not support image filters (``/DCT``, ``/JPX``, ``/JBIG``, ``/CCITT``).
+But it is ok to read the stream with ``decode`` set to 1 on such streams. ``pplib`` assumes that the image is the
+final/target stream form and just returns it as-is. Eg. in the case of JPEG (``/DCT`` filtered) image both calls should
+give the same results::
+
+  ppstream_all(jpegstream, &jpegsize, 0); // don't decode, return what's there
+  ppstream_all(jpegstream, &jpegsize, 1); // decode but found image filter, effectively the same
+
+A bit more about streams memory. As mentioned, ``pplib`` allocates buffers for stream readers. After ``ppstream_done()``,
+the stream no longer *owns* the buffer space. But the buffer may remain allocated, to be reused with future readers.
+``pplib`` keeps a pool of several buffers. This means, that when you use stream readers, ``pplib`` eats
+some memory (1MB or so) that is not freed, even if no streams are used. And even if you free all objects.
+If you suffer from this, you can optionally use a pair of functions::
+
+  void ppstream_init_buffers (void);
+  void ppstream_free_buffers (void);
+
+The first initializes buffers pool, unless done so far. Currently ``pplib`` cares of it before opening every stream reader,
+so it is not obligatory. The second frees a pool of buffers. The intended use is to call ``ppstream_init_buffers()`` once
+as kind of library initializer and to call ``ppstream_free_buffers()`` once, as the library finalizer.
+
+Filters
+-------
+
+``ppstream`` knows its filter(s) and keps it as ``stream->filter``::
+
+  // ppstream *stream;
+  ppstream_filter *info = &stream->filter;
+
+``ppstream_filter`` is the following structure::
+
+  typedef struct {
+    ppstreamtp *filters; // c-array of filter identifiers (enum integers)
+    ppdict **params;     // c-array of ppdict pointers
+    size_t count;        // number of filters, length of the arrays (typically 1)
+  } ppstream_filter;
+
+If ``count > 0`` then ``filters`` member is not NULL. Filters array keeps integer constants::
+
+  PPSTREAM_BASE16    /* /ASCIIHexDecode  */
+  PPSTREAM_BASE85    /* /ASCII85Decode   */
+  PPSTREAM_RUNLENGTH /* /RunLengthDecode */
+  PPSTREAM_FLATE     /* /FlateDecode     */
+  PPSTREAM_LZW       /* /LZWDecode       */
+  PPSTREAM_CCITT     /* /CCITTFaxDecode  */
+  PPSTREAM_DCT       /* /DCTDecode       */
+  PPSTREAM_JBIG2     /* /JBIG2Decode     */
+  PPSTREAM_JPX       /* /JPXDecode       */
+  PPSTREAM_CRYPT     /* /Crypt           */
+
+Params array keeps corresponding filter parameters (``/DecodeParms``) if present. ``params`` member is not NULL
+if ``count > 0`` and the stream dict has ``/DecodeParms`` entry. Even if ``params`` is there,
+for every N-th filter, ``params[N]`` may be NULL (corresponding to PDF ``null``).
+
+``stream->filter`` keeps the source stream filter information, which may not correspond to the result of stream readers
+(``ppstream_first()``, ``ppstream_next()``, ``ppstream_all()``). The get the filters info relevant to the result from readers::
+
+  void ppstream_filter_info (ppstream *stream, ppstream_filter *info, int decode);
+
+The function fills ``ppstream_filter`` structure according to the expected result from stream readers (example 3 shows
+how to use it to reconstruct ``/Filter`` and ``/DecodeParms`` when copying the stream to some other PDF).
+
+To convert filter identifier (``ppstreamtp``) to a corresponding PDF filter name::
+
+  const char * ppstream_filter_name[];
+
+To covert ``ppname`` to filter identifier::
+
+  int ppstream_filter_type (ppname filtername, ppstreamtp *filtertype);
+  // returns 1 and sets filtertype if filtername is the proper filter name
+
+Additional information about the stream can be fetched from macros::
+
+  ppstream_compressed(stream) /* stream->flags & (PPSTREAM_FILTER|PPSTREAM_IMAGE) */
+  ppstream_filtered(stream)   /* stream->flags & PPSTREAM_FILTER */
+  ppstream_image(stream)      /* stream->flags * PPSTREAM_IMAGE */
+
+``stream->flags`` is a binary sum of the following::
+
+  PPSTREAM_FILTER        /* set iff the stream filters list has one of: BASE16, BASE85, RUNLENGTH, FLATE, LZW */
+  PPSTREAM_IMAGE         /* set iff the stream filters list has one of: CCITT, DCT, JBIG2, JPX */
+  PPSTREAM_ENCRYPTED     /* set iff the stream is encrypted */
+  PPSTREAM_ENCRYPTED_OWN /* set iff the stream has own CRYPT filter */
+
+Note that ``PPSTREAM_COMPRESSED`` is not there any longer, use ``ppstream_compressed()`` instead.
+And there is some more, see ``ppapi.h``.
+
+Ref
+---
+
+Indirect objects are represented as ``ppref`` structure. To get the object that the
+reference refers to::
+
+  ppobj * ppref_obj(ppref *ref) // macro
+
+``ppref`` structure also keeps the reference number and version, a pointer to cross reference table it belongs
+to and others, but I guess you won't need anything but the referenced object. ``pplib`` parser resolves references
+on-fly. So if there is a dict with indirect objects::
+
+  <<
+    /Type /Page
+    /Resources 123 0 R
+    ...
+  >>
+
+the parser will produce ``ppdict`` with ``Resources`` key pointing the proper ``ppref *`` value.
+If you need more, access ``ppref`` members::
+
+  struct ppref {
+    ppobj object;           // target object
+    ppuint number, version; // identifiers
+    size_t offset;          // file offset (useless for you, may be zero for compressed objects)
+    ppuint length;          // the length of the original object data
+    ppxref *xref;           // cross reference table it belongs to
+  };
+
+
+XRef
+----
+
+Cross reference table is exposed as ``ppxref`` (incomplete type, you can only oprate on its pointer).
+To get top document xref::
+
+  ppxref * ppdoc_xref (ppdoc *pdf);
+
+To get previous (older) xref::
+
+  ppxref * ppxref_prev (ppxref *xref);
+
+To find an object of a given refnumber::
+
+  ppref * ppxref_find (ppxref *xref, ppuint refnumber);
+
+[Note: since pplib v0.98 in case of documents with incremental update, ``ppxref_find()`` returns
+the newest available version of a given object rather than the object in a given body.]
+
+PDF
+---
+
+PDF document is represented as ``ppdoc`` structure (incomplete type, you can only operate on its pointer).
+To load a document from file::
+
+  ppdoc * ppdoc_load (const char *filename);
+
+To load a document from file handle::
+
+  ppdoc * ppdoc_filehandle (FILE *file, int closefile); // closefile 1 to fclose() on end
+
+To load a document from memory data::
+
+  ppdoc * ppdoc_mem (const void *data, size_t size);
+
+The data is assumed to be a buffer allocated with ``malloc`` - it is freed when destroying ``ppdoc``.
+
+Both loaders returns ``NULL`` on failure.
+
+To free ``ppdoc`` and all objects it refers to::
+
+  void ppdoc_free (ppdoc *pdf);
+
+So far we haven't mention about any explicit object reclaimers. There are no dedicated ``free`` functions
+for other objects. You don't allocate or free objects yourself. ``ppdoc`` object is an owner of all
+beings it refers to. It also means that every object described so far is alive as long as the containing
+``ppdoc`` is alive.
+
+To access main PDF dicts::
+
+  ppdict * ppdoc_trailer(ppdoc *pdf); // returns top xref trailer dict
+  ppdict * ppdoc_catalog(ppdoc *pdf); // returns catalog referred from the trailer
+  ppdict * ppdoc_info(ppdoc *pdf);    // returns info dict referred from the trailer
+
+To get the PDF version::
+
+  const char * ppdoc_version_string (ppdoc *pdf);    // version string
+  int ppdoc_version_number (ppdoc *pdf, int *minor); // minor and major numbers
+
+To get the file size of the source PDF document::
+
+  size_t ppdoc_file_size (ppdoc *pdf);
+
+To get the number of objects in all xrefs::
+
+  ppuint ppdoc_objects (ppdoc *pdf);
+
+To get the approx usage of memory::
+
+  size_t ppdoc_memory (ppdoc *pdf, size_t *waste);
+
+Encryption
+----------
+
+``pplib`` handles encrypted (password protected) documents. If a document is encrypted, most of strings and streams are ciphered.
+In that form they are unreadable and rather useless, you can't even rewrite such strings/streams as-is to a different PDF output.
+It is a common practise to *protect* documents with an empty password. Such documents remain readable in Acrobat (just opens them without prompting
+for a password), but some features (eg. printing) may restricted by the application.
+
+When ``pplib`` detects encryption, it follows Acrobat approach and first tries an empty password. If it succeeds, ``pplib`` proceeeds normally, providing
+an access to decrypted strings and streams, as if they weren't ciphered. If the document is protected with non-empty password, ``pplib`` gives
+a way to provide a password and proceed. Until you provide a password, ``ppdoc`` object returned by ``ppdoc_load()`` function has all object wntries
+set to ``null``.
+
+After loading a document you should check encryption status with::
+
+  ppcrypt_status ppdoc_crypt_status (ppdoc *pdf);
+
+``ppcrypt_status`` (integer) may have the following values:
+
+  ``PPCRYPT_NONE`` - no encryption, go ahead
+  ``PPCRYPT_DONE`` - encryption present but password succeeded, go ahead
+  ``PPCRYPT_PASS`` - encryption present, need non-empty password
+  ``PPCRYPT_FAIL`` - invalid or unsupported encryption (eg. undocumented in pdf spec)
+
+If a password is needed, you can provide one with::
+
+  ppcrypt_status ppdoc_crypt_pass (ppdoc *pdf, const void *userpass, size_t userpasslength,
+                                               const void *ownerpass, size_t ownerpasslength);
+
+Well, yes, there are actually two passwords in encrypted documents. Relation between them is obscure to me, but enough
+to know that having one of them is enough to decrypt the document. If you know the password, you probably mean
+``userpass``, in which case you should put ``NULL`` as ``ownerpass``. The function returns ``PPCRYPT_DONE`` if the password
+succeeds and the previous status otherwise. Your custom loader function may look like that::
+
+  ppdoc *pdf;
+  pdf = ppdoc_load("file.pdf");
+  if (pdf == NULL)
+    return NULL;
+  switch (ppdoc_crypt_status(pdf))
+  {
+    case PPCRYPT_NONE:
+    case PPCRYPT_DONE:
+      return pdf;
+    case PPCRYPT_PASS:
+      if (ppdoc_crypt_pass(pdf, "dummy", 5, NULL, 0) == PPCRYPT_DONE ||
+          ppdoc_crypt_pass(pdf, NULL, 0, "dummy", 5) == PPCRYPT_DONE)
+        return pdf;
+      printf("sorry, password needed\n");
+      ppdoc_free(pdf);
+      return NULL;
+    case PPCRYPT_FAIL:
+      printf("sorry, encryption failed\n");
+      ppdoc_free(pdf);
+      return NULL;
+  }
+
+[If you get ``PPCRYPT_FAIL`` it might mean *I failed*, so treat as a bug.]
+
+If you'd like to know what permissions are given/restricted to encrypted document::
+
+  ppint ppdoc_permissions (ppdoc *pdf);
+
+Returned value can be queried with the following binary flags (you can verify with Acrobat *File -> Properties -> Security* tab)::
+
+  PPDOC_ALLOW_PRINT       // printing
+  PPDOC_ALLOW_MODIFY      // filling form fields, signing, creating template pages
+  PPDOC_ALLOW_COPY        // copying, copying for accessibility
+  PPDOC_ALLOW_ANNOTS      // filling form fields, copying, signing
+  PPDOC_ALLOW_EXTRACT     // contents copying for accessibility
+  PPDOC_ALLOW_ASSEMBLY    // (no effect)
+  PPDOC_ALLOW_PRINT_HIRES // (no effect)
+
+``pplib`` does absolutelly nothing with permissions, it cares only to decrypt the document. As mentioned, encryption applies to strings
+and streams. ``pplib`` decrypt strings when parsing document objects, so the result you get is *normal* (not ciphered).
+Streams are decrypted whenever you access them. Even if you ask for a raw stream data, you'll get a raw (compressed) stream, but decrypted.
+So except the check to ``ppdoc_crypt_status()``, you shouldn't bother about encryption.
+
+In encrypted documents most of streams are encrypted. To check if a given stream is encrypted::
+
+  ppstream_encrypted(stream) // macro, returns non-zero if encrypted
+
+Encryption is independent from compression, don't confuse with ``ppstream_compressed()``
+
+Pages
+-----
+
+Several helpers to deal with pages. To get the number of pages::
+
+  ppuint ppdoc_page_count (ppdoc *pdf);
+
+To access the root pages tree node::
+
+  ppref * ppdoc_pages(ppdoc *pdf);
+
+To get the page reference at a given index::
+
+  ppref * ppdoc_page (ppdoc *pdf, ppuint index);
+
+``index`` is a page number. First page has number 1. For index out of bounds ``ppdoc_page()`` returns NULL.
+Iterating over pages using index from 1 to ``ppdoc_page_count()`` and calling ``ppdoc_page()`` on each iteration
+would be suboptimal. Here is a dedicted iterator for this::
+
+  ppref *  ppdoc_first_page (ppdoc *pdf);
+  ppref * ppdoc_next_page (ppdoc *pdf);
+
+The iterator in use::
+
+  ppdoc *pdf;
+  ppref *ref;
+  ppdict *dict;
+  int pageno;
+
+  pdf = ppdoc_load("file.pdf");
+  for (ref = ppdoc_first_page(pdf), pageno = 1; ref != NULL; ref = ppdoc_next_page(pdf), ++pageno)
+  {
+    dict = ppref_obj(obj)->dict; // take for granted it is a dict
+    // do something with the page dict
+  }
+
+Functions related to pages return ``ppref *`` ensured to contain dict object, so you don't need sanity
+type checks here.
+
+Contents
+--------
+
+PDF page contents can be given as a stream or array of streams. Here is a convenience iterator over page
+contents streams::
+
+  ppstream * ppcontents_first (ppdict *dict);
+  ppstream * ppcontents_next (ppdict *dict, ppstream *stream);
+
+A complete example of contents stream parser use is given below (example 2).
+But before we get there, we need to introduce ``ppcontext`` object. Conceptually,
+``ppcontext`` is an owner (memory handler) of objects created on demand (beyond the ``ppdoc``).
+So far used only with contents stream parser, which might produce quite some data that we want
+to release just after used. To create a new context::
+
+  pcontext * ppcontext_new (void);
+
+It initializes a new context and its internal memory heap, taking about 64kB on start. After that,
+the context is ready to produce objects (contents parsing functions below). Once objects produced
+from a given context are no longer needed::
+
+  void ppcontext_done (ppcontext *context);
+
+It restores the context to its initial state, as after ``ppcontext_new()``. It means that the context
+is ready to produce another bunch of beings (in the example below, all objects from the next page contents).
+Once the context is not needed anymore::
+
+  void ppcontext_free (ppcontext *context);
+
+Now, contents stream parser functions take the context as an argument. Iterator form of contents stream parser
+that allows to process the contents operator by operator::
+
+  ppobj * ppcontents_first_op (ppcontext *context, ppstream *stream, size_t *psize, ppname *pname);
+  ppobj * ppcontents_next_op (ppcontext *context, ppstream *stream, size_t *psize, ppname *pname);
+
+Returned ``ppobj *`` is a pointer to operands list. ``*psize`` is the number of operands on stack.
+The operator itself is stored as ``*pname``.
+
+To parse the entire contents stream at once with no stop at every operator::
+
+  ppobj * ppcontents_parse (ppcontext *context, ppstream *stream, size_t *psize);
+
+Returns probably quite long list of all parsed objects (operands and operatos) in one piece.
+The number of objects is stored to ``*psize``.
+
+[Contents may contain so called inline images, that breaks a simple scheme of operands / operator syntax::
+
+  BI <keyval pairs> ID <binary image data> EI
+
+Contents parser treats this genuine triplet as a single piece, producing two operands (dict and string)
+followed by ``EI`` operator name.]
+
+Boxes
+-----
+
+Boxes (rectangles) in PDF are roughly 4-number arrays, but with a special intent.
+``pplib`` provides a basic interface for these special arrays::
+
+  typedef struct {
+    ppnum lx, ly, rx, ry;
+  } pprect;
+
+This type is used only by helper functions - PDF parser is not aware of the rectangle type.
+To convert ``pparray`` to ``pprect``::
+
+  pprect * pparray_to_rect (pparray *array, pprect *rect); // returns rect or NULL
+
+In example::
+
+  pprect rect;
+  if (pparray_to_rect(array, &rect) != NULL)
+   ; // do something with rect
+
+To get some image bounding box::
+
+  pprect * ppdict_get_rect (ppdict *dict, const char *name, pprect *rect);
+  // eg. ppdict_get_rect(imagedict, "BBox", &rect)
+
+To get some page box::
+
+  pprect * ppdict_get_box (ppdict *dict, const char *name, pprect *rect);
+  // eg. ppdict_get_box(pagedict, "MediaBox", &rect)
+
+The later not only checks the pagedict, but also goes through parent page nodes.
+
+Transforms
+----------
+
+Transformations are given as 6-number arrays, but with a special intent.
+``pplib`` provides a basic interface for these special arrays::
+
+  typedef struct {
+    ppnum xx, xy, yx, yy, x, y;
+  } ppmatrix;
+
+This type is used only by helper functions - PDF parser is not aware of the matrix type.
+To convert ``pparray`` to ``ppmatrix``::
+
+  ppmatrix * pparray_to_matrix (pparray *array, ppmatrix *matrix);
+
+In example::
+
+  ppmatrix matrix;
+  if (pparray_to_matrix(array, &matrix) != NULL)
+    ; // do something with matrix
+
+To get the matrix from dict::
+
+  ppmatrix * ppdict_get_matrix (ppdict *dict, const char *name, ppmatrix *matrix);
+  // eg. ppdict_get_matrix(imagedict, "Matrix", &matrix)
+
+Errors handling
+---------------
+
+``pplib`` is not verbose, but might happen that it needs to log some error message, eg. when parsing
+of some PDF boject fails due to invalid offsets. By default, ``pplib`` prints the message to stdout, eg.::
+
+  invalid 123 0 R object at offset 123123
+
+To replace the default logger, you can provide your own::
+
+  void pplog_callback (pplogger_callback logger, void *alien);
+
+``pplogger_callback`` is a function::
+
+  void your_callback (const char *message, void *alien);
+
+In example, to redirect messages to stderr you may define a function::
+
+  void your_callback (const char *message, void *alien)
+  {
+    fprintf((FILE *)alien, "\nooops: %s\n", message);
+  }
+
+Then set the callback somewhere before loading documents::
+
+  pplog_callback(your_callback, stderr);
+
+(example 2 uses that).
+
+To set the default log messages prefix, eg. ``pplib:``, use::
+
+  int pplog_prefix (const char *prefix)
+
+Default is empty. The function succeeds if provided prefix is reasonably short (less then 32 bytes).

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppapi.rst.txt
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppapi.rst.txt	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppapi.rst.txt	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,937 @@
+
+``pplib``
+=========
+
+``pplib`` is a library for raw PDF access. It parses PDF documents and provides an interface to access document structures in C.
+
+C-API
+=====
+
+Types
+-----
+
+``pplib`` defines several C-types to represent PDF types:
+
+- ``ppint`` - signed integer (``int64_t``)
+- ``ppnum`` - real number (double)
+- ``ppname`` - PDF name
+- ``ppstring`` - PDF string
+- ``pparray`` - PDF array
+- ``ppdict`` - PDF dict
+- ``ppstream`` - PDF stream
+- ``ppref`` - PDF indirect reference
+- ``ppobj`` - a container of all above
+
+Among ``ppint`` and ``ppnum``, we also use ``ppuint`` - unsigned integer (machine word, alias to ``size_t``).
+
+Other API types:
+
+- ``ppdoc`` - PDF document
+- ``ppxref`` - cross-references table
+- ``ppcontext`` - ... later
+- ``pprect`` - rectangle
+- ``ppmatrix`` - matrix
+
+Integer, number, name and string are treated as simple types.
+Names and strings are actually C-structures, but exposed to API as typedefs to ``const char *``.
+Other types (array, dict, stream, reference, object container, xref, PDF) are C-structures,
+and you operate it their pointers. So when you declare a simple type variable you say::
+
+  ppuint u;
+  ppnum n;
+  ppname name;
+  ppstring string;
+  ...
+
+And when you declare a compound type you operate on pointers::
+
+  ppobj *obj;
+  pparray *array;
+  ppdict *dict;
+  ppstream *stream;
+  ppref *ref;
+  ppdoc *pdf;
+
+Some of those C-types are defined in library header ``ppapi.h`` (complete types). Some others are incomplete
+(eg. you can't say ``sizeof(ppdoc)`` or ``sizeof(ppxref)``). This is to avoid unnecesary dependencies in
+the header. [At some points it's not clear to me what to hide and what to expose, will see.] The library itself
+uses ``pplib.h`` but for auxilary applications including a standalone ``ppapi.h`` header should be enough.
+
+``pplib`` was designed having **read-only** PDF access in mind. Even if some structure is completelly exposed,
+so that you can directly access its members, you should treat them as read-only. I don't make them ``const`` because
+then all variable declarations would need to be ``const``, which is annoying, and I'd need some trickery in the library
+internals to unconst. Besides, nothing is really const for C type casts.
+
+Object
+------
+
+A common container for all elementary PDF object types is ``ppobj`` structure. ``ppobj`` has a type identifier
+(integer) and union of values::
+
+  struct ppobj {
+    ppobjtp type;
+    union {
+      ppint integer;
+      ppnum number;
+      ppname name;
+      ppstring string;
+      pparray *array;
+      ppdict *dict;
+      ppstream *stream;
+      ppref *ref;
+      void *any;
+    };
+  };
+
+Object type is one of constants (enum)::
+
+  PPNONE
+  PPNULL
+  PPBOOL
+  PPINT
+  PPNUM
+  PPNAME
+  PPSTRING
+  PPARRAY
+  PPDICT
+  PPSTREAM
+  PPREF
+
+The type determines the structure member you're allowed to access::
+
+  ppobj *obj;
+  ...
+  switch (obj->type)
+  {
+    case PPNONE: // shouldn't actually happen, indicates some failure
+      break;
+    case PPNULL: // valid PDF null object, no value
+      break;
+    case PPBOOL: // do something with obj->integer (ppint), value 0 or 1
+      break;
+    case PPINT:  // do something with obj->integer (ppint)
+      break;
+    case PPNUM:  // do something with obj->number (ppnum)
+      break;
+    case PPNAME: // do something with obj->name (ppname)
+      break;
+    case PPSTRING: // do something with obj->string (ppstring)
+      break;
+    case PPARRAY: // do something with obj->array (pparray *)
+      break;
+    case PPDICT: // do something with obj->dict (ppdict *)
+      break;
+    case PPSTREAM: // do something with obj->stream (ppstream *)
+      break;
+    case PPREF: // do something with obj->ref (ppref *)
+      break;
+  }
+
+More often then not you know exactly what type of object value is expected, in which case
+you may use one of the following macros::
+
+  // returns 1 if o->type is PPNULL
+  int ppobj_get_null(o)         \
+
+  // if o->type is PPBOOL, sets int v to 0 or 1 and returns 1, 0 otherwise
+  int ppobj_get_bool(o, v)
+
+  // if o->type is PPINT, sets ppint v and returns 1, 0 otherwise
+  int ppobj_get_int(o, v)
+
+  // if o->type is PPINT and >= 0, sets ppuint v and returns 1, 0 otherwise
+  int ppobj_get_uint(o, v)
+
+  // if o->type is PPNUM or PPINT, sets ppnum v and returns 1, 0 otherwise
+  int ppobj_get_num(o, v)
+
+  // if o->type is PPNAME returns the name, NULL otherwise
+  ppname ppobj_get_name(o)
+
+  // if o->type is PPSTRING returns the string, NULL otherwise
+  ppstring ppobj_get_string(o)
+
+  // if o->type is PPARRAY returns the array, NULL otherwise
+  pparray * ppobj_get_array(o)
+
+  // if o->type is PPDICT returns the dict, NULL otherwise
+  ppdict * ppobj_get_dict(o)
+
+  // if o->type is PPSTREAM returns the stream, NULL otherwise
+  ppstream * ppobj_get_stream(o)
+
+  // if o->type is PPREF returns the reference, NULL otherwise
+  ppref * ppobj_get_ref(o)
+
+Note the coercion from integer to real number, but not reverse. In practise, whenever you expect a real number,
+you should also handle integer (eg. '1' used instead of '1.0').
+
+It is a common case that the object is given as an indirect reference, but what you actually
+want is not the reference, but the object referred by it. Here is a helper for it::
+
+  // if o->type is PPREF, returns what the reference points, otherwise returns o
+  ppobj * ppobj_rget_obj(o)
+
+Also every ``ppobj_get_*`` macro has ``ppobj_rget_*`` counterpart that makes a check
+for the expected type, but if the object is PPREF, it jumps to the target object.
+So for example ``ppobj_rget_dict(obj)`` will return dict if ``obj`` is of type PPDICT
+or if it is of type PPREF and ``obj->ref`` hosts an object of type PPDICT.
+
+Names
+-----
+
+PDF names are represented as ``ppname``.
+I find it convenient to have ``ppname`` type pretending ``const char *``. This allows to use ``ppname``
+in all C-style string functions like ``printf("%s", name)``.
+
+Be aware, however, that ``ppname`` is actually a C-structure. It is perfectly ok to cast ``ppname`` to ``const char *``::
+
+  ppname name;
+  ...
+  (const char *)name;
+
+But reverse is forbidden::
+
+  const char *cstr = "cstring";
+  ...
+  (ppname)cstr; // expect segmentation fault soon
+
+For convenient use in C, names are ``'\0'`` terminated. But to get the length of name better always use
+``ppname_size()`` macro. ``ppname`` object knows its size, don't use ``strlen()``::
+
+  size_t ppname_size(ppname name); // macro, returns length of name in bytes
+
+In current implementation names are not hashed anyhow, so name-to-name comparison is not smarter than ``memcmp()``.
+Use macros::
+
+  int ppname_is(ppname name, "literal");    // to compare ppname with C-literal string
+  int ppname_eq(ppname name, ppname other); // to compare ppname with a different name
+
+If you'll use ``pplib`` to parse contents streams, you may need to distinguish names from operators
+(more precisely executable names). Names in PDF are preceeded by '/', executable names aren't. In both
+cases PDF parser will produce ``ppname`` but can be distingushed with::
+
+  int ppname_exec(ppname name); // returns non-zero if name is executable
+
+Names are kept in their raw form, with possible PDF specific escapes (in text below we call it **encoded** form).
+Leading '/' is omitted, though. One may need a decoded name, with no PDF escapes.
+A pair of functions provides a simple interface to switch between those two forms::
+
+  ppname ppname_decoded (ppname name); // returns decoded (unescaped) form of the name
+  ppname ppname_encoded (ppname name); // returns encoded (escaped) form of the name
+
+In pretty most cases PDF names contains only letters (no special characters, no escapes), so decoded and encoded forms are identical.
+In that case both functions simply return the argument. It is ok to call ``ppname_decoded()`` on already decoded form
+and ``ppname_encoded()`` on already encoded form. Both forms are produced by PDF objects parser, so accessing ``ppname`` alter ego
+in whatever direction needs no extra decoding or allocation costs.
+
+String
+------
+
+PDF strings have the same internal construction as names, so most of names description above applies to strings as well.
+``ppstring`` is a typedef of ``const char *``, roughly ``'\0'`` terminiated C-string. To get the size of the string::
+
+  size_t ppstring_size(ppstring string); // macro, returns the length of the string in bytes
+
+Strings are provided in their raw form, preserving PDF specific escapes, but with no
+``()`` or ``<>`` delims. To distinguish plain strings from hex strings::
+
+  int ppstring_hex(ppstring string); // macro, returns non zero if hex string
+
+Or if you prefer::
+
+  switch (ppstring_type(string))
+  {
+    case PPSTRING_PLAIN: // literal string, surrounded by ``(`` and ``)`` in PDF
+      break;
+    case PPSTRING_BASE16: // hex string, surrounded by ``<`` and ``>`` in PDF
+      break;
+    case PPSTRING_BASE85: // base85 string surrounded by ``<~`` and ``~>`` in PDF
+      break;
+  }
+
+The last is actually Postscript specific, not used in PDF, but I think it might appear in contents streams...
+No matter how the string is given in PDF (plain or hex), here are two functions to
+switch between encoded and decoded strings forms::
+
+  ppstring ppstring_decoded (ppstring string); // returns decoded string possibly with PDF escapes
+  ppstring ppstring_encoded (ppstring string); // returns encoded string with no PDF escapes
+
+For hex strings, encoded form contains hex digits, while decoded form contains arbitrary bytes (the result of hex decoding).
+Plain strings usually contains printable ASCII characters, but they might contain any binary data.
+As with names, objects parser produces both forms. The raw form with PDF escapes (or raw hex form) is considered the main one.
+Eg. when you access ``obj->string`` you always get the encoded form. At any moment you can switch to its alter ego.
+
+No matter if the string is plain or hex, if its first two bytes (decoded) are UTF16 BOM, the string
+is considered unicode. ``ppstring`` object *knows* it is unicode or not::
+
+  switch (ppstring_utf(string))
+  {
+    case PPSTRING_UTF16LE: // unicode string, utf16le
+      break;
+    case PPSTRING_UTF16BE: // unicode string, utf16be
+      break;
+    default:               // no unicode
+  }
+
+Or simply::
+
+  if (ppstring_utf(string) != 0) {
+    // handle unicode string
+  }
+
+If the string is unicode, BOM remains the part of the string  -- ``pplib`` parser does not strip it.
+Unicode or not, encoded or decoded, strings are always C-arrays of bytes and ``ppstring_size()``
+always returns the size in bytes.
+
+Array
+-----
+
+PDF arrays are represented as ``pparray`` type, which is C-array of ``ppobj`` structures.
+To get the size::
+
+  size_t pparray_size(pparray *array) // macro, returns the number of array items
+
+To get ``ppobj *`` at a given index::
+
+  ppobj * pparray_at(array, index)  // macro, returns ppobj * (no index check)
+  ppobj * pparray_get(array, index) // macro, returns ppobj * or NULL (with index check)
+  ppobj * pparray_get_obj (pparray *array, size_t index);  // function equiv to pparray_get()
+
+Iterating over array elements::
+
+  pparray *array;
+  size_t index, size;
+  ppobj *obj;
+  for (size = pparray_size(array), pparray_first(array, index, obj); index < size; pparray_next(index, obj))
+  {
+    // do something with index and obj
+  }
+
+There is no magic first/next macros, just iteration over pointers. One could also use something like::
+
+  for (index = 0, size = array->size; index < size; ++index)
+  {
+    obj = pparray_at(array, index);
+    // do something with index and obj
+  }
+
+When getting values from array and expecting a result of known type, use one of the following::
+
+  int pparray_get_bool (pparray *array, size_t index, int *v);    // get boolean value
+  int pparray_get_int (pparray *array, size_t index, ppint *v);   // get ppint value
+  int pparray_get_uint (pparray *array, size_t index, ppuint *v); // get ppuint value
+  int pparray_get_num (pparray *array, size_t index, ppnum *v);   // get ppnum value
+  ppname pparray_get_name (pparray *array, size_t index);         // get ppname value
+  ppstring pparray_get_string (pparray *array, size_t index);     // get ppstring value
+  pparray * pparray_get_array (pparray *array, size_t index);     // get pparray * value
+  ppdict * pparray_get_dict (pparray *array, size_t index);       // get ppdict * value
+  ppref * pparray_get_ref (pparray *array, size_t index);         // get ppref * value
+
+As with ``ppobj_get_*`` suite, numeric types getters set the value of a given type and returns 1, if the type matches.
+Otherwise sets nothing and returns 0. Other getters return the value if the type matches, or NULL.
+
+Every function from ``pparray_get_*`` suite have its ``pparray_rget_*`` counterpart that
+that dereferences indirect objects (as explained for ``ppobj_rget_*`` getters). Note that
+there is no ``pparray_get_stream()`` function, as streams in PDF are always indirect.
+To get the stream from array use::
+
+  ppstream * pparray_rget_stream (pparray *array, size_t index);
+
+Dict
+----
+
+PDF dicts are represented as ``ppdict`` structure, which is C-array of ``ppobj`` with parallel
+C-array of ``ppname`` pointers. To get the size of a dict::
+
+  size_t ppdict_size(ppdict *dict) // macro, returns the number of key-val pairs
+
+To get the value at a given index (integer)::
+
+  ppobj * ppdict_at(ppdict *dict, index) // macro, no index check
+
+To get the name (key) at a given index::
+
+  ppname ppdict_key(ppdict *dict, index) // macro, no index check
+
+To iterate over dict key-val pairs::
+
+  ppdict *dict;
+  ppname *pkey;
+  ppobj *obj;
+
+  for (ppdict_first(dict, pkey, obj); *pkey != NULL; ppdict_next(pkey, obj))
+  {
+    // do something with *pkey and obj
+  }
+
+There is no magic in first/next macros, just iteration through keys and values lists pointers.
+For convenient iteration, a list of keys is terminated with NULL, so in the code above ``*pkey != NULL``
+is used as the loop condition. One may also iterate via indices::
+
+  ppdict *dict;
+  size_t index, size;
+  ppname key;
+  ppobj *obj;
+  for (index = 0, size = ppdict_size(dict); index < size; ++index)
+  {
+    key = ppdict_key(dict, index);
+    obj = ppdict_at(dict, index);
+    // do something with key and obj
+  }
+
+To get the object associated with a given name, use one of the following::
+
+  ppobj * ppdict_get_obj (ppdict *dict, const char *name);
+  int ppdict_get_bool (ppdict *dict, const char *name, int *v);
+  int ppdict_get_int (ppdict *dict, const char *name, ppint *v);
+  int ppdict_get_uint (ppdict *dict, const char *name, ppuint *v);
+  int ppdict_get_num (ppdict *dict, const char *name, ppnum *v);
+  ppname ppdict_get_name (ppdict *dict, const char *name);
+  ppstring ppdict_get_string (ppdict *dict, const char *name);
+  pparray * ppdict_get_array (ppdict *dict, const char *name);
+  ppdict * ppdict_get_dict (ppdict *dict, const char *name);
+  ppref * ppdict_get_ref (ppdict *dict, const char *name);
+
+Note that all getters accepts ``const char *`` as key, so it is ok to say::
+
+  ppdict_rget_dict(dict, "Resources");
+
+as well as::
+
+  ppdic_rget_dict(dict, name); // ppname name
+
+Every ``ppdict_get_*`` getter has ``ppdict_rget_*`` counterpart that dereferences
+indirect objects if necessary. Note that there is no ``ppdict_get_stream()`` function,
+but there is::
+
+  ppstream * ppdict_rget_stream (ppdict *dict, const char *name);
+
+So far dicts comes with no names mapping, so by-name dict accessors perform a linear search
+through the keys list. PDF dicts are usually small, so it is fast enough.
+Building names lookup for every dict in PDF makes no sense I think, as ``pplib`` applications
+will query just several dicts I guess.. However, some apps may extensively query
+resources, which may refer to hundreds of objects (eg. images). So some mapping for dicts
+is still considered.
+
+Stream
+------
+
+PDF streams are represented as ``ppstream`` objects. To get the stream dict::
+
+  ppdict * ppstream_dict(ppstream *stream) // macro
+
+To read the stream data::
+
+  uint8_t * ppstream_first (ppstream *stream, size_t *size, int decode);
+  uint8_t * ppstream_next (ppstream *stream, size_t *size);
+  void ppstream_done (ppstream *stream);
+
+Both ``first` and ``next`` functions return a chunk of stream data and sets the ``size`` of the chunk.
+``decode`` parameter tell the reader to decompress the stream (1) or return raw (0). A call to ``ppstream_next()``
+must be preceeded by ``ppstream_first()``. Once you're done with the stream, you have to call ``ppstream_done()``,
+no matter if the stream has been read to the end or not. The stream data iterator in use::
+
+  uint8_t *data;
+  size_t size;
+  ppstream *stream;
+  int decode = 1; // 1 - get decompressed, 0 - get raw
+
+  for (data = ppstream_first(stream, &size, decode); data != NULL; data = ppstream_next(stream, &size))
+  {
+    // do something with data and its size
+  }
+  ppstream_done(stream);
+
+Every subsequent iterator call invalidates the previous reader output, so you have to utilize the returned chunk
+of data just after you ot that. So the following is wrong::
+
+  data1 = ppstream_first(stream, &size, 1);
+  data2 = ppstream_next(stream, &size);
+  data3 = ppstream_next(stream, &size);
+  some_output(data1, size);
+  some_output(data2, size);
+
+The reader calls usually return the same pointer to internal buffer, just filled with a different data.
+``pplib`` allocates reasonably large buffer and fills that buffer on subsequent calls to the reader.
+
+If the source stream has no compression, using both ``decode == 1`` and ``decode == 0`` should give the same result.
+You can check if the stream is actually compressed with::
+
+  ppstream_compressed(stream) // macro, returns non zero if /Filter is present
+
+It might be necessary to load the entire stream data at once::
+
+  uint8_t * ppstream_all (ppstream *stream, size_t *size, int decode);
+
+If the initial buffer size is insufficient, it grows until the entire stream data is loaded. You must call
+``ppstream_done(stream)`` after using returned data.
+
+``ppstream_done()`` doesn't invalidate the stream object, it just closes its internal reader.
+The stream itself remains a valid object (eg. one can read it again if necessary),
+but the reader buffer is released. It is actually not freed but kept for future the reuse with that on some other stream,
+but you still need to mark it ready for reuse to avoid allocating a separate buffer for every stream you're going to read.
+
+Stream data readers will return ``NULL`` if you haven't close the previous reader process  with ``ppstream_done()``. All below is wrong::
+
+  data1 = ppstream_all(stream, &size, 1);
+  data2 = ppstream_all(stream, &size, 1); // data2 == NULL
+  // or
+  data1 = ppstream_first(stream, &size, 1);
+  data2 = ppstream_first(stream, &size, 1); // data2 == NULL
+  // or
+  data1 = ppstream_first(stream, &size, 1);
+  data2 = ppstream_all(stream, &size, 1); // data2 == NULL
+
+To avoid unnecessary dependencies, ``pplib`` does not support image filters (``/DCT``, ``/JPX``, ``/JBIG``, ``/CCITT``).
+But it is ok to read the stream with ``decode`` set to 1 on such streams. ``pplib`` assumes that the image is the
+final/target stream form and just returns it as-is. Eg. in the case of JPEG (``/DCT`` filtered) image both calls should
+give the same results::
+
+  ppstream_all(jpegstream, &jpegsize, 0); // don't decode, return what's there
+  ppstream_all(jpegstream, &jpegsize, 1); // decode but found image filter, effectively the same
+
+A bit more about streams memory. As mentioned, ``pplib`` allocates buffers for stream readers. After ``ppstream_done()``,
+the stream no longer *owns* the buffer space. But the buffer may remain allocated, to be reused with future readers.
+``pplib`` keeps a pool of several buffers. This means, that when you use stream readers, ``pplib`` eats
+some memory (1MB or so) that is not freed, even if no streams are used. And even if you free all objects.
+If you suffer from this, you can optionally use a pair of functions::
+
+  void ppstream_init_buffers (void);
+  void ppstream_free_buffers (void);
+
+The first initializes buffers pool, unless done so far. Currently ``pplib`` cares of it before opening every stream reader,
+so it is not obligatory. The second frees a pool of buffers. The intended use is to call ``ppstream_init_buffers()`` once
+as kind of library initializer and to call ``ppstream_free_buffers()`` once, as the library finalizer.
+
+Filters
+-------
+
+In version v1.00 (20190916) ``ppstream`` API has been extended with filters information.
+``ppstream`` knows its filter(s) and keps it as ``stream->filter``::
+
+  // ppstream *stream;
+  ppstream_filter *info = &stream->filter;
+
+``ppstream_filter`` is the following structure::
+
+  typedef struct {
+    ppstreamtp *filters; // c-array of filter identifiers (enum integers)
+    ppdict **params;     // c-array of ppdict pointers
+    size_t count;        // number of filters, length of the arrays (typically 1)
+  } ppstream_filter;
+
+If ``count > 0`` then ``filters`` member is not NULL. Filters array keeps integer constants::
+
+  PPSTREAM_BASE16    /* /ASCIIHexDecode  */
+  PPSTREAM_BASE85    /* /ASCII85Decode   */
+  PPSTREAM_RUNLENGTH /* /RunLengthDecode */
+  PPSTREAM_FLATE     /* /FlateDecode     */
+  PPSTREAM_LZW       /* /LZWDecode       */
+  PPSTREAM_CCITT     /* /CCITTFaxDecode  */
+  PPSTREAM_DCT       /* /DCTDecode       */
+  PPSTREAM_JBIG2     /* /JBIG2Decode     */
+  PPSTREAM_JPX       /* /JPXDecode       */
+  PPSTREAM_CRYPT     /* /Crypt           */
+
+Params array keeps corresponding filter parameters (``/DecodeParms``) if present. ``params`` member is not NULL
+if ``count > 0`` and the stream dict has ``/DecodeParms`` entry. Even if ``params`` is there,
+for every N-th filter, ``params[N]`` may be NULL (corresponding to PDF ``null``).
+
+``stream->filter`` keeps the source stream filter information, which may not correspond to the result of stream readers
+(``ppstream_first()``, ``ppstream_next()``, ``ppstream_all()``). The get the filters info relevant to the result from readers::
+
+  void ppstream_filter_info (ppstream *stream, ppstream_filter *info, int decode);
+
+The function fills ``ppstream_filter`` structure according to the expected result from stream readers (example 3 shows
+how to use it to reconstruct ``/Filter`` and ``/DecodeParms`` when copying the stream to some other PDF).
+
+To convert filter identifier (``ppstreamtp``) to a corresponding PDF filter name::
+
+  const char * ppstream_filter_name[];
+
+To covert ``ppname`` to filter identifier::
+
+  int ppstream_filter_type (ppname filtername, ppstreamtp *filtertype);
+  // returns 1 and sets filtertype if filtername is the proper filter name
+
+Additional information about the stream can be fetched from macros::
+
+  ppstream_compressed(stream) /* stream->flags & (PPSTREAM_FILTER|PPSTREAM_IMAGE) */
+  ppstream_filtered(stream)   /* stream->flags & PPSTREAM_FILTER */
+  ppstream_image(stream)      /* stream->flags * PPSTREAM_IMAGE */
+
+``stream->flags`` is a binary sum of the following::
+
+  PPSTREAM_FILTER        /* set iff the stream filters list has one of: BASE16, BASE85, RUNLENGTH, FLATE, LZW */
+  PPSTREAM_IMAGE         /* set iff the stream filters list has one of: CCITT, DCT, JBIG2, JPX */
+  PPSTREAM_ENCRYPTED     /* set iff the stream is encrypted */
+  PPSTREAM_ENCRYPTED_OWN /* set iff the stream has own CRYPT filter */
+
+Note that ``PPSTREAM_COMPRESSED`` is not there any longer, use ``ppstream_compressed()`` instead.
+And there is some more, see ``ppapi.h``.
+
+Ref
+---
+
+Indirect objects are represented as ``ppref`` structure. To get the object that the
+reference refers to::
+
+  ppobj * ppref_obj(ppref *ref) // macro
+
+``ppref`` structure also keeps the reference number and version, a pointer to cross reference table it belongs
+to and others, but I guess you won't need anything but the referenced object. ``pplib`` parser resolves references
+on-fly. So if there is a dict with indirect objects::
+
+  <<
+    /Type /Page
+    /Resources 123 0 R
+    ...
+  >>
+
+the parser will produce ``ppdict`` with ``Resources`` key pointing the proper ``ppref *`` value.
+If you need more, access ``ppref`` members::
+
+  struct ppref {
+    ppobj object;           // target object
+    ppuint number, version; // identifiers
+    size_t offset;          // file offset (useless for you, may be zero for compressed objects)
+    ppuint length;          // the length of the original object data
+    ppxref *xref;           // cross reference table it belongs to
+  };
+
+
+XRef
+----
+
+Cross reference table is exposed as ``ppxref`` (incomplete type, you can only oprate on its pointer).
+To get top document xref::
+
+  ppxref * ppdoc_xref (ppdoc *pdf);
+
+To get previous (older) xref::
+
+  ppxref * ppxref_prev (ppxref *xref);
+
+To find an object of a given refnumber::
+
+  ppref * ppxref_find (ppxref *xref, ppuint refnumber);
+
+[Note: since pplib v0.98 in case of documents with incremental update, ``ppxref_find()`` returns
+the newest available version of a given object rather than the object in a given body.]
+
+PDF
+---
+
+PDF document is represented as ``ppdoc`` structure (incomplete type, you can only operate on its pointer).
+To load a document from file::
+
+  ppdoc * ppdoc_load (const char *filename);
+
+To load a document from memory data::
+
+  ppdoc * ppdoc_mem (const void *data, size_t size);
+
+The data is assumed to be a buffer allocated with ``malloc`` - it is freed when destroying ``ppdoc``.
+
+Both loaders returns ``NULL`` on failure.
+
+To free ``ppdoc`` and all objects it refers to::
+
+  void ppdoc_free (ppdoc *pdf);
+
+So far we haven't mention about any explicit object reclaimers. There are no dedicated ``free`` functions
+for other objects. You don't allocate or free objects yourself. ``ppdoc`` object is an owner of all
+beings it refers to. It also means that every object described so far is alive as long as the containing
+``ppdoc`` is alive.
+
+To access main PDF dicts::
+
+  ppdict * ppdoc_trailer(ppdoc *pdf); // returns top xref trailer dict
+  ppdict * ppdoc_catalog(ppdoc *pdf); // returns catalog referred from the trailer
+  ppdict * ppdoc_info(ppdoc *pdf);    // returns info dict referred from the trailer
+
+To get the PDF version::
+
+  const char * ppdoc_version_string (ppdoc *pdf);    // version string
+  int ppdoc_version_number (ppdoc *pdf, int *minor); // minor and major numbers
+
+To get the file size of the source PDF document::
+
+  size_t ppdoc_file_size (ppdoc *pdf);
+
+To get the number of objects in all xrefs::
+
+  ppuint ppdoc_objects (ppdoc *pdf);
+
+To get the approx usage of memory::
+
+  size_t ppdoc_memory (ppdoc *pdf, size_t *waste);
+
+Encryption
+----------
+
+``pplib`` handles encrypted (password protected) documents. If a document is encrypted, most of strings and streams are ciphered.
+In that form they are unreadable and rather useless, you can't even rewrite such strings/streams as-is to a different PDF output.
+It is a common practise to *protect* documents with an empty password. Such documents remain readable in Acrobat (just opens them without prompting
+for a password), but some features (eg. printing) may restricted by the application.
+
+When ``pplib`` detects encryption, it follows Acrobat approach and first tries an empty password. If it succeeds, ``pplib`` proceeeds normally, providing
+an access to decrypted strings and streams, as if they weren't ciphered. If the document is protected with non-empty password, ``pplib`` gives
+a way to provide a password and proceed. Until you provide a password, ``ppdoc`` object returned by ``ppdoc_load()`` function has all object wntries
+set to ``null``.
+
+After loading a document you should check encryption status with::
+
+  ppcrypt_status ppdoc_crypt_status (ppdoc *pdf);
+
+``ppcrypt_status`` (integer) may have the following values:
+
+  ``PPCRYPT_NONE`` - no encryption, go ahead
+  ``PPCRYPT_DONE`` - encryption present but password succeeded, go ahead
+  ``PPCRYPT_PASS`` - encryption present, need non-empty password
+  ``PPCRYPT_FAIL`` - invalid or unsupported encryption (eg. undocumented in pdf spec)
+
+If a password is needed, you can provide one with::
+
+  ppcrypt_status ppdoc_crypt_pass (ppdoc *pdf, const void *userpass, size_t userpasslength,
+                                               const void *ownerpass, size_t ownerpasslength);
+
+Well, yes, there are actually two passwords in encrypted documents. Relation between them is obscure to me, but enough
+to know that having one of them is enough to decrypt the document. If you know the password, you probably mean
+``userpass``, in which case you should put ``NULL`` as ``ownerpass``. The function returns ``PPCRYPT_DONE`` if the password
+succeeds and the previous status otherwise. Your custom loader function may look like that::
+
+  ppdoc *pdf;
+  pdf = ppdoc_load("file.pdf");
+  if (pdf == NULL)
+    return NULL;
+  switch (ppdoc_crypt_status(pdf))
+  {
+    case PPCRYPT_NONE:
+    case PPCRYPT_DONE:
+      return pdf;
+    case PPCRYPT_PASS:
+      if (ppdoc_crypt_pass(pdf, "dummy", 5, NULL, 0) == PPCRYPT_DONE ||
+          ppdoc_crypt_pass(pdf, NULL, 0, "dummy", 5) == PPCRYPT_DONE)
+        return pdf;
+      printf("sorry, password needed\n");
+      ppdoc_free(pdf);
+      return NULL;
+    case PPCRYPT_FAIL:
+      printf("sorry, encryption failed\n");
+      ppdoc_free(pdf);
+      return NULL;
+  }
+
+[If you get ``PPCRYPT_FAIL`` it might mean *I failed*, so treat as a bug.]
+
+If you'd like to know what permissions are given/restricted to encrypted document::
+
+  ppint ppdoc_permissions (ppdoc *pdf);
+
+Returned value can be queried with the following binary flags (you can verify with Acrobat *File -> Properties -> Security* tab)::
+
+  PPDOC_ALLOW_PRINT       // printing
+  PPDOC_ALLOW_MODIFY      // filling form fields, signing, creating template pages
+  PPDOC_ALLOW_COPY        // copying, copying for accessibility
+  PPDOC_ALLOW_ANNOTS      // filling form fields, copying, signing
+  PPDOC_ALLOW_EXTRACT     // contents copying for accessibility
+  PPDOC_ALLOW_ASSEMBLY    // (no effect)
+  PPDOC_ALLOW_PRINT_HIRES // (no effect)
+
+``pplib`` does absolutelly nothing with permissions, it cares only to decrypt the document. As mentioned, encryption applies to strings
+and streams. ``pplib`` decrypt strings when parsing document objects, so the result you get is *normal* (not ciphered).
+Streams are decrypted whenever you access them. Even if you ask for a raw stream data, you'll get a raw (compressed) stream, but decrypted.
+So except the check to ``ppdoc_crypt_status()``, you shouldn't bother about encryption.
+
+In encrypted documents most of streams are encrypted. To check if a given stream is encrypted::
+
+  ppstream_encrypted(stream) // macro, returns non-zero if encrypted
+
+Encryption is independent from compression, don't confuse with ``ppstream_compressed()``
+
+Pages
+-----
+
+Several helpers to deal with pages. To get the number of pages::
+
+  ppuint ppdoc_page_count (ppdoc *pdf);
+
+To access the root pages tree node::
+
+  ppref * ppdoc_pages(ppdoc *pdf);
+
+To get the page reference at a given index::
+
+  ppref * ppdoc_page (ppdoc *pdf, ppuint index);
+
+``index`` is a page number. First page has number 1. For index out of bounds ``ppdoc_page()`` returns NULL.
+Iterating over pages using index from 1 to ``ppdoc_page_count()`` and calling ``ppdoc_page()`` on each iteration
+would be suboptimal. Here is a dedicted iterator for this::
+
+  ppref *  ppdoc_first_page (ppdoc *pdf);
+  ppref * ppdoc_next_page (ppdoc *pdf);
+
+The iterator in use::
+
+  ppdoc *pdf;
+  ppref *ref;
+  ppdict *dict;
+  int pageno;
+
+  pdf = ppdoc_load("file.pdf");
+  for (ref = ppdoc_first_page(pdf), pageno = 1; ref != NULL; ref = ppdoc_next_page(pdf), ++pageno)
+  {
+    dict = ppref_obj(obj)->dict; // take for granted it is a dict
+    // do something with the page dict
+  }
+
+Functions related to pages return ``ppref *`` ensured to contain dict object, so you don't need sanity
+type checks here.
+
+Contents
+--------
+
+PDF page contents can be given as a stream or array of streams. Here is a convenience iterator over page
+contents streams::
+
+  ppstream * ppcontents_first (ppdict *dict);
+  ppstream * ppcontents_next (ppdict *dict, ppstream *stream);
+
+A complete example of contents stream parser use is given below (example 2).
+But before we get there, we need to introduce ``ppcontext`` object. Conceptually,
+``ppcontext`` is an owner (memory handler) of objects created on demand (beyond the ``ppdoc``).
+So far used only with contents stream parser, which might produce quite some data that we want
+to release just after used. To create a new context::
+
+  pcontext * ppcontext_new (void);
+
+It initializes a new context and its internal memory heap, taking about 64kB on start. After that,
+the context is ready to produce objects (contents parsing functions below). Once objects produced
+from a given context are no longer needed::
+
+  void ppcontext_done (ppcontext *context);
+
+It restores the context to its initial state, as after ``ppcontext_new()``. It means that the context
+is ready to produce another bunch of beings (in the example below, all objects from the next page contents).
+Once the context is not needed anymore::
+
+  void ppcontext_free (ppcontext *context);
+
+Now, contents stream parser functions take the context as an argument. Iterator form of contents stream parser
+that allows to process the contents operator by operator::
+
+  ppobj * ppcontents_first_op (ppcontext *context, ppstream *stream, size_t *psize, ppname *pname);
+  ppobj * ppcontents_next_op (ppcontext *context, ppstream *stream, size_t *psize, ppname *pname);
+
+Returned ``ppobj *`` is a pointer to operands list. ``*psize`` is the number of operands on stack.
+The operator itself is stored as ``*pname``.
+
+To parse the entire contents stream at once with no stop at every operator::
+
+  ppobj * ppcontents_parse (ppcontext *context, ppstream *stream, size_t *psize);
+
+Returns probably quite long list of all parsed objects (operands and operatos) in one piece.
+The number of objects is stored to ``*psize``.
+
+[Contents may contain so called inline images, that breaks a simple scheme of operands / operator syntax::
+
+  BI <keyval pairs> ID <binary image data> EI
+
+Contents parser treats this genuine triplet as a single piece, producing two operands (dict and string)
+followed by ``EI`` operator name.]
+
+Boxes
+-----
+
+Boxes (rectangles) in PDF are roughly 4-number arrays, but with a special intent.
+``pplib`` provides a basic interface for these special arrays::
+
+  typedef struct {
+    ppnum lx, ly, rx, ry;
+  } pprect;
+
+This type is used only by helper functions - PDF parser is not aware of the rectangle type.
+To convert ``pparray`` to ``pprect``::
+
+  pprect * pparray_to_rect (pparray *array, pprect *rect); // returns rect or NULL
+
+In example::
+
+  pprect rect;
+  if (pparray_to_rect(array, &rect) != NULL)
+   ; // do something with rect
+
+To get some image bounding box::
+
+  pprect * ppdict_get_rect (ppdict *dict, const char *name, pprect *rect);
+  // eg. ppdict_get_rect(imagedict, "BBox", &rect)
+
+To get some page box::
+
+  pprect * ppdict_get_box (ppdict *dict, const char *name, pprect *rect);
+  // eg. ppdict_get_box(pagedict, "MediaBox", &rect)
+
+The later not only checks the pagedict, but also goes through parent page nodes.
+
+Transforms
+----------
+
+Transformations are given as 6-number arrays, but with a special intent.
+``pplib`` provides a basic interface for these special arrays::
+
+  typedef struct {
+    ppnum xx, xy, yx, yy, x, y;
+  } ppmatrix;
+
+This type is used only by helper functions - PDF parser is not aware of the matrix type.
+To convert ``pparray`` to ``ppmatrix``::
+
+  ppmatrix * pparray_to_matrix (pparray *array, ppmatrix *matrix);
+
+In example::
+
+  ppmatrix matrix;
+  if (pparray_to_matrix(array, &matrix) != NULL)
+    ; // do something with matrix
+
+To get the matrix from dict::
+
+  ppmatrix * ppdict_get_matrix (ppdict *dict, const char *name, ppmatrix *matrix);
+  // eg. ppdict_get_matrix(imagedict, "Matrix", &matrix)
+
+Errors handling
+---------------
+
+``pplib`` is not verbose, but might happen that it needs to log some error message, eg. when parsing
+of some PDF boject fails due to invalid offsets. By default, ``pplib`` prints the message to stdout, eg.::
+
+  invalid 123 0 R object at offset 123123
+
+To replace the default logger, you can provide your own::
+
+  void pplog_callback (pplogger_callback logger, void *alien);
+
+``pplogger_callback`` is a function::
+
+  void your_callback (const char *message, void *alien);
+
+In example, to redirect messages to stderr you may define a function::
+
+  void your_callback (const char *message, void *alien)
+  {
+    fprintf((FILE *)alien, "\nooops: %s\n", message);
+  }
+
+Then set the callback somewhere before loading documents::
+
+  pplog_callback(your_callback, stderr);
+
+(example 2 uses that).
+
+To set the default log messages prefix, eg. ``pplib:``, use::
+
+  int pplog_prefix (const char *prefix)
+
+Default is empty. The function succeeds if provided prefix is reasonably short (less then 32 bytes).

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppcode.rst.txt
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppcode.rst.txt	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppcode.rst.txt	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,101 @@
+Examples
+========
+
+Example 1
+---------
+
+.. literalinclude:: ../src/pptest1.c
+
+Example 2
+---------
+
+.. literalinclude:: ../src/pptest2.c
+
+Example 3
+---------
+
+.. literalinclude:: ../src/pptest3.c
+
+ppapi.h
+-------
+
+.. literalinclude:: ../src/ppapi.h
+
+
+Changes
+=======
+
+v0.97
+-----
+First release integrated with luatex sources, plus portability changes from Luigi.
+
+v0.98
+-----
+Changed references resolving in case of incremental updates; tech notes ppxref_find() in ppxref.c.
+
+v0.99
+-----
+Fixed streams handling; null characters should NOT be gobbled after "stream" keyword
+
+v1.00
+-----
+Fixed streams handling (Luigi); object streams updated before other streams
+Revised streams handling, ppstream API extended
+
+v1.01
+-----
+Fixed names handling (thanks Hans); digits after '#' weren't skipped
+
+v1.02
+-----
+Fixed page finder (thanks Luigi)
+
+v1.03
+-----
+Fixed TIFF predictor (thanks folks)
+
+v1.04
+-----
+Fixed TIFF predictor for ARM
+
+v1.05
+-----
+Attempt to fix parsing inline images crap
+
+v2.00
+-----
+Deep rework on allocators.
+Deep rework on strings and names.
+
+v2.01
+-----
+Fixed invalid stream buffer handling; ``iof_discard()`` no longer reclaims the source (``filter->next``) filter.
+Sanity alignment adjustments in ``iof_heap``.
+
+v2.02
+-----
+Fixed incorrect encoding of strings alterego with octal escaping, thanks Luigi.
+On Hans request added ``ppdoc_filehandle()`` function and ``ppdoc_file()`` macro for loading ppdoc from ``FILE *``.
+
+v2.03
+-----
+Fixed alloc/free of ``ppdoc`` heap; ``ppdoc`` is now mallocated, no longer taken from its own heap. Again, thanks Luigi.
+Fixed warnings about dereferencing type-puned pointers, and some others.
+
+v2.04
+-----
+Byte lookups for names/strings loaders are now int8_t, as char might be signed.
+ppdoc_first_page() / ppdoc_next_page() iterator now handles a case when /Kids array is empty.
+Fixed generating keys for encrypted streams; ppstring_internal() returns the string of the proper size.
+More stream tests in pptest3.c.
+Some rework on md5 and sha2.
+
+v2.05
+-----
+uint8_t instead of ppbyte in internals; ppbyte intent is "the most natural 8-bit integer", so it is 'char',
+but internally we almost always need uint8_t (char may be signed or not..)
+
+TODO
+====
+- external streams (egzotic)
+

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/pplib.rst.txt
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/pplib.rst.txt	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/pplib.rst.txt	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,15 @@
+.. pplib documentation master file, created by
+   sphinx-quickstart on Thu Jun 07 14:23:51 2018.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+pplib
+=====
+
+.. toctree::
+   :maxdepth: 2
+
+   ppnew
+   ppapi-2.x
+   ppapi-1.x
+   ppcode

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppnew.rst.txt
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppnew.rst.txt	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_sources/ppnew.rst.txt	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,103 @@
+
+1.x vs 2.x
+==========
+
+Allocation
+----------
+
+Allocation mechanisms has been revised. All objects are still allocated from a private storage (called heap),
+but now the heap serves properly aligned memory chunks. Implementation of the heap is (hopefully) platform
+independent, so all ``ARM_COMPLIANT`` checks has been removed. Some details work differently on 32/64-bit
+machines, this distinction seems inevitable. Allocation related code has been moved to ``util/utilmem*.c`` files.
+
+[There are actually 3 different allocators - **heap**, **stock**, and **pool** - each of which has 4 variants
+for 1, 2, 4 and 8 bytes alignment. So far ``pplib`` uses only the **heap**, but I want to have this part
+in a single place for a while. More notes about allocators in ``utilmemallc.h``.]
+
+``pplib`` uses two heaps:
+
+* bytes heap - providing 2-bytes aligned memory chunks for byte data
+* structures heap - providing 8-bytes aligned chunks for all structures
+
+2-bytes alignment of byte data is caused by implementation details / limits, ``pplib`` doesn't make a use of it
+(could be unaligned as well). All the structures are stored in 8-bytes aligned chunks on both 32 and 64-bit machines
+(in some structures we use ``double`` and ``int64_t``, which generally needs 8-bytes).
+
+Strings And Names
+-----------------
+
+So far, both ``ppname`` and ``ppstring`` were aliases to ``char *`` with an extra structure hidden just below
+the data address. The idea was to make a string or name usable whenever chars array can, at the cost of some
+pointers trickery. Both names and strings keep an information about pdf-encoded data, as well as plain bytes data.
+I implemented this feature once ``pplib 1.0`` was almost done, and to avoid a revolution, I made that with yet
+another trick. This all was dirty and caused lots of alignment issues.
+
+Now ``ppstring`` and ``ppname`` are **structures**, keeping data and size members, pretty much like ``pparray``::
+
+  struct ppname {
+    ppbyte *data;
+    size_t size;
+    ppname *alterego;
+    int flags;
+  };
+
+  struct ppstring {
+    ppbyte *data;
+    size_t size;
+    ppstring *alterego;
+    int flags;
+  };
+
+Data member is a pointer to (2-bytes aligned) bytes array -- ``ppbyte *``. ``ppbyte`` is an alias to ``char``.
+``pplib`` makes no assumptions about ``ppbyte`` signedness. [I'd prefer to have ``uint8_t``, but better
+keep that in sync with ``ppdict_get_*`` suite, which accepts ``char *``. Using ``"string literals"`` 
+with ``ppdict_get`` function is the most common case, I guess.]
+
+``ppname_size()`` and ``ppstring_size() `` now have
+trivial ``ppname_data()`` and ``ppstring_data()`` counterparts::
+
+  #define ppname_size(name) ((name)->size)
+  #define ppname_data(name) ((name)->data)
+
+  #define ppstring_size(string) ((string)->size)
+  #define ppstring_data(string) ((string)->data)
+
+Switching between encoded / decoded variants is made via explicit ``alterego`` member. If encoded and decoded forms
+are identical, then ``self->alfterego == self`` (never NULL). Helper functions for that::
+
+  PPAPI ppname * ppname_decoded (ppname *name);
+  PPAPI ppname * ppname_encoded (ppname *name);
+
+  PPAPI ppbyte * ppname_decoded_data (ppname *name);
+  PPAPI ppbyte * ppname_encoded_data (ppname *name);
+
+  PPAPI ppstring * ppstring_decoded (ppstring *string);
+  PPAPI ppstring * ppstring_encoded (ppstring *string);
+
+  PPAPI ppbyte * ppstring_decoded_data (ppstring *string);
+  PPAPI ppbyte * ppstring_encoded_data (ppstring *string);
+
+Since ``ppname`` and ``ppstring`` are now structures, all API functions returning name/string or taking name/string
+as an argument, now take **a pointer to name/string**. Watch out for ``ppdict_get_*`` functions suite. They still accept
+``const char *`` key as an argument, but ``ppname`` type can no longer be used there::
+
+  ppname key;
+  ppdict_get_something(dict, key);      // wrong
+  ppdict_get_something(dict, key.data); // ok
+
+  ppname *pkey;
+  ppdict_get_something(dict, (const char *)pkey); // wrong
+  ppdict_get_something(dict, pkey->data);         // ok
+
+Consequently, functions / macros that used pointer to ``ppname`` (``ppdict_first()`` / ``ppdict_next()``),
+now needs ``ppname **pname``.
+
+Cleanups
+--------
+
+Some of unused utils were removed. There is still some code in utils part that is not used by the library,
+but I need this tollbox in many other places and don't want to maintain two versions.
+
+Some unification in integer types; ``size_t`` seems to be the best choice for and integer representing machine
+word (``unsigned long`` is not long enough on windows), less utils dependencies, less compiler warnings.
+

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+application/octet-stream
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--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/background_b01.png	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/background_b01.png	2020-02-15 12:45:08 UTC (rev 53789)

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Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/basic.css
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/basic.css	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/basic.css	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,676 @@
+/*
+ * basic.css
+ * ~~~~~~~~~
+ *
+ * Sphinx stylesheet -- basic theme.
+ *
+ * :copyright: Copyright 2007-2019 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+/* -- main layout ----------------------------------------------------------- */
+
+div.clearer {
+    clear: both;
+}
+
+/* -- relbar ---------------------------------------------------------------- */
+
+div.related {
+    width: 100%;
+    font-size: 90%;
+}
+
+div.related h3 {
+    display: none;
+}
+
+div.related ul {
+    margin: 0;
+    padding: 0 0 0 10px;
+    list-style: none;
+}
+
+div.related li {
+    display: inline;
+}
+
+div.related li.right {
+    float: right;
+    margin-right: 5px;
+}
+
+/* -- sidebar --------------------------------------------------------------- */
+
+div.sphinxsidebarwrapper {
+    padding: 10px 5px 0 10px;
+}
+
+div.sphinxsidebar {
+    float: left;
+    width: 230px;
+    margin-left: -100%;
+    font-size: 90%;
+    word-wrap: break-word;
+    overflow-wrap : break-word;
+}
+
+div.sphinxsidebar ul {
+    list-style: none;
+}
+
+div.sphinxsidebar ul ul,
+div.sphinxsidebar ul.want-points {
+    margin-left: 20px;
+    list-style: square;
+}
+
+div.sphinxsidebar ul ul {
+    margin-top: 0;
+    margin-bottom: 0;
+}
+
+div.sphinxsidebar form {
+    margin-top: 10px;
+}
+
+div.sphinxsidebar input {
+    border: 1px solid #98dbcc;
+    font-family: sans-serif;
+    font-size: 1em;
+}
+
+div.sphinxsidebar #searchbox form.search {
+    overflow: hidden;
+}
+
+div.sphinxsidebar #searchbox input[type="text"] {
+    float: left;
+    width: 80%;
+    padding: 0.25em;
+    box-sizing: border-box;
+}
+
+div.sphinxsidebar #searchbox input[type="submit"] {
+    float: left;
+    width: 20%;
+    border-left: none;
+    padding: 0.25em;
+    box-sizing: border-box;
+}
+
+
+img {
+    border: 0;
+    max-width: 100%;
+}
+
+/* -- search page ----------------------------------------------------------- */
+
+ul.search {
+    margin: 10px 0 0 20px;
+    padding: 0;
+}
+
+ul.search li {
+    padding: 5px 0 5px 20px;
+    background-image: url(file.png);
+    background-repeat: no-repeat;
+    background-position: 0 7px;
+}
+
+ul.search li a {
+    font-weight: bold;
+}
+
+ul.search li div.context {
+    color: #888;
+    margin: 2px 0 0 30px;
+    text-align: left;
+}
+
+ul.keywordmatches li.goodmatch a {
+    font-weight: bold;
+}
+
+/* -- index page ------------------------------------------------------------ */
+
+table.contentstable {
+    width: 90%;
+    margin-left: auto;
+    margin-right: auto;
+}
+
+table.contentstable p.biglink {
+    line-height: 150%;
+}
+
+a.biglink {
+    font-size: 1.3em;
+}
+
+span.linkdescr {
+    font-style: italic;
+    padding-top: 5px;
+    font-size: 90%;
+}
+
+/* -- general index --------------------------------------------------------- */
+
+table.indextable {
+    width: 100%;
+}
+
+table.indextable td {
+    text-align: left;
+    vertical-align: top;
+}
+
+table.indextable ul {
+    margin-top: 0;
+    margin-bottom: 0;
+    list-style-type: none;
+}
+
+table.indextable > tbody > tr > td > ul {
+    padding-left: 0em;
+}
+
+table.indextable tr.pcap {
+    height: 10px;
+}
+
+table.indextable tr.cap {
+    margin-top: 10px;
+    background-color: #f2f2f2;
+}
+
+img.toggler {
+    margin-right: 3px;
+    margin-top: 3px;
+    cursor: pointer;
+}
+
+div.modindex-jumpbox {
+    border-top: 1px solid #ddd;
+    border-bottom: 1px solid #ddd;
+    margin: 1em 0 1em 0;
+    padding: 0.4em;
+}
+
+div.genindex-jumpbox {
+    border-top: 1px solid #ddd;
+    border-bottom: 1px solid #ddd;
+    margin: 1em 0 1em 0;
+    padding: 0.4em;
+}
+
+/* -- domain module index --------------------------------------------------- */
+
+table.modindextable td {
+    padding: 2px;
+    border-collapse: collapse;
+}
+
+/* -- general body styles --------------------------------------------------- */
+
+div.body {
+    min-width: 450px;
+    max-width: 800px;
+}
+
+div.body p, div.body dd, div.body li, div.body blockquote {
+    -moz-hyphens: auto;
+    -ms-hyphens: auto;
+    -webkit-hyphens: auto;
+    hyphens: auto;
+}
+
+a.headerlink {
+    visibility: hidden;
+}
+
+h1:hover > a.headerlink,
+h2:hover > a.headerlink,
+h3:hover > a.headerlink,
+h4:hover > a.headerlink,
+h5:hover > a.headerlink,
+h6:hover > a.headerlink,
+dt:hover > a.headerlink,
+caption:hover > a.headerlink,
+p.caption:hover > a.headerlink,
+div.code-block-caption:hover > a.headerlink {
+    visibility: visible;
+}
+
+div.body p.caption {
+    text-align: inherit;
+}
+
+div.body td {
+    text-align: left;
+}
+
+.first {
+    margin-top: 0 !important;
+}
+
+p.rubric {
+    margin-top: 30px;
+    font-weight: bold;
+}
+
+img.align-left, .figure.align-left, object.align-left {
+    clear: left;
+    float: left;
+    margin-right: 1em;
+}
+
+img.align-right, .figure.align-right, object.align-right {
+    clear: right;
+    float: right;
+    margin-left: 1em;
+}
+
+img.align-center, .figure.align-center, object.align-center {
+  display: block;
+  margin-left: auto;
+  margin-right: auto;
+}
+
+.align-left {
+    text-align: left;
+}
+
+.align-center {
+    text-align: center;
+}
+
+.align-right {
+    text-align: right;
+}
+
+/* -- sidebars -------------------------------------------------------------- */
+
+div.sidebar {
+    margin: 0 0 0.5em 1em;
+    border: 1px solid #ddb;
+    padding: 7px 7px 0 7px;
+    background-color: #ffe;
+    width: 40%;
+    float: right;
+}
+
+p.sidebar-title {
+    font-weight: bold;
+}
+
+/* -- topics ---------------------------------------------------------------- */
+
+div.topic {
+    border: 1px solid #ccc;
+    padding: 7px 7px 0 7px;
+    margin: 10px 0 10px 0;
+}
+
+p.topic-title {
+    font-size: 1.1em;
+    font-weight: bold;
+    margin-top: 10px;
+}
+
+/* -- admonitions ----------------------------------------------------------- */
+
+div.admonition {
+    margin-top: 10px;
+    margin-bottom: 10px;
+    padding: 7px;
+}
+
+div.admonition dt {
+    font-weight: bold;
+}
+
+div.admonition dl {
+    margin-bottom: 0;
+}
+
+p.admonition-title {
+    margin: 0px 10px 5px 0px;
+    font-weight: bold;
+}
+
+div.body p.centered {
+    text-align: center;
+    margin-top: 25px;
+}
+
+/* -- tables ---------------------------------------------------------------- */
+
+table.docutils {
+    border: 0;
+    border-collapse: collapse;
+}
+
+table.align-center {
+    margin-left: auto;
+    margin-right: auto;
+}
+
+table caption span.caption-number {
+    font-style: italic;
+}
+
+table caption span.caption-text {
+}
+
+table.docutils td, table.docutils th {
+    padding: 1px 8px 1px 5px;
+    border-top: 0;
+    border-left: 0;
+    border-right: 0;
+    border-bottom: 1px solid #aaa;
+}
+
+table.footnote td, table.footnote th {
+    border: 0 !important;
+}
+
+th {
+    text-align: left;
+    padding-right: 5px;
+}
+
+table.citation {
+    border-left: solid 1px gray;
+    margin-left: 1px;
+}
+
+table.citation td {
+    border-bottom: none;
+}
+
+/* -- figures --------------------------------------------------------------- */
+
+div.figure {
+    margin: 0.5em;
+    padding: 0.5em;
+}
+
+div.figure p.caption {
+    padding: 0.3em;
+}
+
+div.figure p.caption span.caption-number {
+    font-style: italic;
+}
+
+div.figure p.caption span.caption-text {
+}
+
+/* -- field list styles ----------------------------------------------------- */
+
+table.field-list td, table.field-list th {
+    border: 0 !important;
+}
+
+.field-list ul {
+    margin: 0;
+    padding-left: 1em;
+}
+
+.field-list p {
+    margin: 0;
+}
+
+.field-name {
+    -moz-hyphens: manual;
+    -ms-hyphens: manual;
+    -webkit-hyphens: manual;
+    hyphens: manual;
+}
+
+/* -- hlist styles ---------------------------------------------------------- */
+
+table.hlist td {
+    vertical-align: top;
+}
+
+
+/* -- other body styles ----------------------------------------------------- */
+
+ol.arabic {
+    list-style: decimal;
+}
+
+ol.loweralpha {
+    list-style: lower-alpha;
+}
+
+ol.upperalpha {
+    list-style: upper-alpha;
+}
+
+ol.lowerroman {
+    list-style: lower-roman;
+}
+
+ol.upperroman {
+    list-style: upper-roman;
+}
+
+dl {
+    margin-bottom: 15px;
+}
+
+dd p {
+    margin-top: 0px;
+}
+
+dd ul, dd table {
+    margin-bottom: 10px;
+}
+
+dd {
+    margin-top: 3px;
+    margin-bottom: 10px;
+    margin-left: 30px;
+}
+
+dt:target, span.highlighted {
+    background-color: #fbe54e;
+}
+
+rect.highlighted {
+    fill: #fbe54e;
+}
+
+dl.glossary dt {
+    font-weight: bold;
+    font-size: 1.1em;
+}
+
+.optional {
+    font-size: 1.3em;
+}
+
+.sig-paren {
+    font-size: larger;
+}
+
+.versionmodified {
+    font-style: italic;
+}
+
+.system-message {
+    background-color: #fda;
+    padding: 5px;
+    border: 3px solid red;
+}
+
+.footnote:target  {
+    background-color: #ffa;
+}
+
+.line-block {
+    display: block;
+    margin-top: 1em;
+    margin-bottom: 1em;
+}
+
+.line-block .line-block {
+    margin-top: 0;
+    margin-bottom: 0;
+    margin-left: 1.5em;
+}
+
+.guilabel, .menuselection {
+    font-family: sans-serif;
+}
+
+.accelerator {
+    text-decoration: underline;
+}
+
+.classifier {
+    font-style: oblique;
+}
+
+abbr, acronym {
+    border-bottom: dotted 1px;
+    cursor: help;
+}
+
+/* -- code displays --------------------------------------------------------- */
+
+pre {
+    overflow: auto;
+    overflow-y: hidden;  /* fixes display issues on Chrome browsers */
+}
+
+span.pre {
+    -moz-hyphens: none;
+    -ms-hyphens: none;
+    -webkit-hyphens: none;
+    hyphens: none;
+}
+
+td.linenos pre {
+    padding: 5px 0px;
+    border: 0;
+    background-color: transparent;
+    color: #aaa;
+}
+
+table.highlighttable {
+    margin-left: 0.5em;
+}
+
+table.highlighttable td {
+    padding: 0 0.5em 0 0.5em;
+}
+
+div.code-block-caption {
+    padding: 2px 5px;
+    font-size: small;
+}
+
+div.code-block-caption code {
+    background-color: transparent;
+}
+
+div.code-block-caption + div > div.highlight > pre {
+    margin-top: 0;
+}
+
+div.code-block-caption span.caption-number {
+    padding: 0.1em 0.3em;
+    font-style: italic;
+}
+
+div.code-block-caption span.caption-text {
+}
+
+div.literal-block-wrapper {
+    padding: 1em 1em 0;
+}
+
+div.literal-block-wrapper div.highlight {
+    margin: 0;
+}
+
+code.descname {
+    background-color: transparent;
+    font-weight: bold;
+    font-size: 1.2em;
+}
+
+code.descclassname {
+    background-color: transparent;
+}
+
+code.xref, a code {
+    background-color: transparent;
+    font-weight: bold;
+}
+
+h1 code, h2 code, h3 code, h4 code, h5 code, h6 code {
+    background-color: transparent;
+}
+
+.viewcode-link {
+    float: right;
+}
+
+.viewcode-back {
+    float: right;
+    font-family: sans-serif;
+}
+
+div.viewcode-block:target {
+    margin: -1px -10px;
+    padding: 0 10px;
+}
+
+/* -- math display ---------------------------------------------------------- */
+
+img.math {
+    vertical-align: middle;
+}
+
+div.body div.math p {
+    text-align: center;
+}
+
+span.eqno {
+    float: right;
+}
+
+span.eqno a.headerlink {
+    position: relative;
+    left: 0px;
+    z-index: 1;
+}
+
+div.math:hover a.headerlink {
+    visibility: visible;
+}
+
+/* -- printout stylesheet --------------------------------------------------- */
+
+ at media print {
+    div.document,
+    div.documentwrapper,
+    div.bodywrapper {
+        margin: 0 !important;
+        width: 100%;
+    }
+
+    div.sphinxsidebar,
+    div.related,
+    div.footer,
+    #top-link {
+        display: none;
+    }
+}
\ No newline at end of file

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/bizstyle.css
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/bizstyle.css	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/bizstyle.css	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,490 @@
+/*
+ * bizstyle.css_t
+ * ~~~~~~~~~~~~~~
+ *
+ * Sphinx stylesheet -- business style theme.
+ *
+ * :copyright: Copyright 2011-2014 by Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+ at import url("basic.css");
+
+/* -- page layout ----------------------------------------------------------- */
+
+body {
+    font-family: 'Lucida Grande', 'Lucida Sans Unicode', 'Geneva',
+                 'Verdana', sans-serif;
+    font-size: 14px;
+    letter-spacing: -0.01em;
+    line-height: 150%;
+    text-align: center;
+    background-color: white;
+    background-image: url(background_b01.png);
+    color: black;
+    padding: 0;
+    border-right: 1px solid #336699;
+    border-left: 1px solid #336699;
+
+    margin: 0px 40px 0px 40px;
+}
+
+div.document {
+    background-color: white;
+    text-align: left;
+    background-repeat: repeat-x;
+
+    -moz-box-shadow: 2px 2px 5px #000;
+    -webkit-box-shadow: 2px 2px 5px #000;
+}
+
+div.bodywrapper {
+    margin: 0 0 0 240px;
+    border-left: 1px solid #ccc;
+}
+
+div.body {
+    margin: 0;
+    padding: 0.5em 20px 20px 20px;
+}
+
+div.related {
+    font-size: 1em;
+
+    -moz-box-shadow: 2px 2px 5px #000;
+    -webkit-box-shadow: 2px 2px 5px #000;
+}
+
+div.related ul {
+    background-color: #336699;
+    height: 100%;
+    overflow: hidden;
+    border-top: 1px solid #ddd;
+    border-bottom: 1px solid #ddd;
+}
+
+div.related ul li {
+    color: white;
+    margin: 0;
+    padding: 0;
+    height: 2em;
+    float: left;
+}
+
+div.related ul li.right {
+    float: right;
+    margin-right: 5px;
+}
+
+div.related ul li a {
+    margin: 0;
+    padding: 0 5px 0 5px;
+    line-height: 1.75em;
+    color: #fff;
+}
+
+div.related ul li a:hover {
+    color: #fff;
+    text-decoration: underline;
+}
+
+div.sphinxsidebarwrapper {
+    padding: 0;
+}
+
+div.sphinxsidebar {
+    margin: 0;
+    padding: 0.5em 12px 12px 12px;
+    width: 210px;
+    font-size: 1em;
+    text-align: left;
+}
+
+div.sphinxsidebar h3, div.sphinxsidebar h4 {
+    margin: 1em 0 0.5em 0;
+    font-size: 1em;
+    padding: 0.1em 0 0.1em 0.5em;
+    color: white;
+    border: 1px solid #336699;
+    background-color: #336699;
+}
+
+div.sphinxsidebar h3 a {
+    color: white;
+}
+
+div.sphinxsidebar ul {
+    padding-left: 1.5em;
+    margin-top: 7px;
+    padding: 0;
+    line-height: 130%;
+}
+
+div.sphinxsidebar ul ul {
+    margin-left: 20px;
+}
+
+div.sphinxsidebar input {
+    border: 1px solid #336699;
+}
+
+div.footer {
+    background-color: white;
+    color: #336699;
+    padding: 3px 8px 3px 0;
+    clear: both;
+    font-size: 0.8em;
+    text-align: right;
+    border-bottom: 1px solid #336699;
+
+    -moz-box-shadow: 2px 2px 5px #000;
+    -webkit-box-shadow: 2px 2px 5px #000;
+}
+
+div.footer a {
+    color: #336699;
+    text-decoration: underline;
+}
+
+/* -- body styles ----------------------------------------------------------- */
+
+p {
+    margin: 0.8em 0 0.5em 0;
+}
+
+a {
+    color: #336699;
+    text-decoration: none;
+}
+
+a:hover {
+    color: #336699;
+    text-decoration: underline;
+}
+
+div.body a {
+    text-decoration: underline;
+}
+
+h1, h2, h3 {
+    color: #336699;
+}
+
+h1 {
+    margin: 0;
+    padding: 0.7em 0 0.3em 0;
+    font-size: 1.5em;
+}
+
+h2 {
+    margin: 1.3em 0 0.2em 0;
+    font-size: 1.35em;
+    padding-bottom: .5em;
+    border-bottom: 1px solid #336699;
+}
+
+h3 {
+    margin: 1em 0 -0.3em 0;
+    font-size: 1.2em;
+    padding-bottom: .3em;
+    border-bottom: 1px solid #CCCCCC;
+}
+
+div.body h1 a, div.body h2 a, div.body h3 a,
+div.body h4 a, div.body h5 a, div.body h6 a {
+    color: black!important;
+}
+
+h1 a.anchor, h2 a.anchor, h3 a.anchor,
+h4 a.anchor, h5 a.anchor, h6 a.anchor {
+    display: none;
+    margin: 0 0 0 0.3em;
+    padding: 0 0.2em 0 0.2em;
+    color: #aaa!important;
+}
+
+h1:hover a.anchor, h2:hover a.anchor, h3:hover a.anchor, h4:hover a.anchor,
+h5:hover a.anchor, h6:hover a.anchor {
+    display: inline;
+}
+
+h1 a.anchor:hover, h2 a.anchor:hover, h3 a.anchor:hover, h4 a.anchor:hover,
+h5 a.anchor:hover, h6 a.anchor:hover {
+    color: #777;
+    background-color: #eee;
+}
+
+a.headerlink {
+    color: #c60f0f!important;
+    font-size: 1em;
+    margin-left: 6px;
+    padding: 0 4px 0 4px;
+    text-decoration: none!important;
+}
+
+a.headerlink:hover {
+    background-color: #ccc;
+    color: white!important;
+}
+
+cite, code, tt {
+    font-family: 'Consolas', 'Deja Vu Sans Mono',
+                 'Bitstream Vera Sans Mono', monospace;
+    font-size: 0.95em;
+    letter-spacing: 0.01em;
+}
+
+code {
+    background-color: #F2F2F2;
+    border-bottom: 1px solid #ddd;
+    color: #333;
+}
+
+code.descname, code.descclassname, code.xref {
+    border: 0;
+}
+
+hr {
+    border: 1px solid #abc;
+    margin: 2em;
+}
+
+a code {
+    border: 0;
+    color: #CA7900;
+}
+
+a code:hover {
+    color: #2491CF;
+}
+
+pre {
+    background-color: transparent !important;
+    font-family: 'Consolas', 'Deja Vu Sans Mono',
+                 'Bitstream Vera Sans Mono', monospace;
+    font-size: 0.95em;
+    letter-spacing: 0.015em;
+    line-height: 120%;
+    padding: 0.5em;
+    border-right: 5px solid #ccc;
+    border-left: 5px solid #ccc;
+}
+
+pre a {
+    color: inherit;
+    text-decoration: underline;
+}
+
+td.linenos pre {
+    padding: 0.5em 0;
+}
+
+div.quotebar {
+    background-color: #f8f8f8;
+    max-width: 250px;
+    float: right;
+    padding: 2px 7px;
+    border: 1px solid #ccc;
+}
+
+div.topic {
+    background-color: #f8f8f8;
+}
+
+table {
+    border-collapse: collapse;
+    margin: 0 -0.5em 0 -0.5em;
+}
+
+table td, table th {
+    padding: 0.2em 0.5em 0.2em 0.5em;
+}
+
+div.admonition {
+    font-size: 0.9em;
+    margin: 1em 0 1em 0;
+    border: 3px solid #cccccc;
+    background-color: #f7f7f7;
+    padding: 0;
+}
+
+div.admonition p {
+    margin: 0.5em 1em 0.5em 1em;
+    padding: 0;
+}
+
+div.admonition li p {
+    margin-left: 0;
+}
+
+div.admonition pre, div.warning pre {
+    margin: 0;
+}
+
+div.highlight {
+    margin: 0.4em 1em;
+}
+
+div.admonition p.admonition-title {
+    margin: 0;
+    padding: 0.1em 0 0.1em 0.5em;
+    color: white;
+    border-bottom: 3px solid #cccccc;
+    font-weight: bold;
+    background-color: #165e83;
+}
+
+div.danger    { border: 3px solid #f0908d; background-color: #f0cfa0; }
+div.error     { border: 3px solid #f0908d; background-color: #ede4cd; }
+div.warning   { border: 3px solid #f8b862; background-color: #f0cfa0; }
+div.caution   { border: 3px solid #f8b862; background-color: #ede4cd; }
+div.attention { border: 3px solid #f8b862; background-color: #f3f3f3; }
+div.important { border: 3px solid #f0cfa0; background-color: #ede4cd; }
+div.note      { border: 3px solid #f0cfa0; background-color: #f3f3f3; }
+div.hint      { border: 3px solid #bed2c3; background-color: #f3f3f3; }
+div.tip       { border: 3px solid #bed2c3; background-color: #f3f3f3; }
+
+div.danger p.admonition-title, div.error p.admonition-title {
+    background-color: #b7282e;
+    border-bottom: 3px solid #f0908d;
+}
+
+div.caution p.admonition-title,
+div.warning p.admonition-title,
+div.attention p.admonition-title {
+    background-color: #f19072;
+    border-bottom: 3px solid #f8b862;
+}
+
+div.note p.admonition-title, div.important p.admonition-title {
+    background-color: #f8b862;
+    border-bottom: 3px solid #f0cfa0;
+}
+
+div.hint p.admonition-title, div.tip p.admonition-title {
+    background-color: #7ebea5;
+    border-bottom: 3px solid #bed2c3;
+}
+
+div.admonition ul, div.admonition ol,
+div.warning ul, div.warning ol {
+    margin: 0.1em 0.5em 0.5em 3em;
+    padding: 0;
+}
+
+div.versioninfo {
+    margin: 1em 0 0 0;
+    border: 1px solid #ccc;
+    background-color: #DDEAF0;
+    padding: 8px;
+    line-height: 1.3em;
+    font-size: 0.9em;
+}
+
+.viewcode-back {
+    font-family: 'Lucida Grande', 'Lucida Sans Unicode', 'Geneva',
+                 'Verdana', sans-serif;
+}
+
+div.viewcode-block:target {
+    background-color: #f4debf;
+    border-top: 1px solid #ac9;
+    border-bottom: 1px solid #ac9;
+}
+
+p.versionchanged span.versionmodified {
+    font-size: 0.9em;
+    margin-right: 0.2em;
+    padding: 0.1em;
+    background-color: #DCE6A0;
+}
+
+/* -- table styles ---------------------------------------------------------- */
+
+table.docutils {
+    margin: 1em 0;
+    padding: 0;
+    border: 1px solid white;
+    background-color: #f7f7f7;
+}
+
+table.docutils td, table.docutils th {
+    padding: 1px 8px 1px 5px;
+    border-top: 0;
+    border-left: 0;
+    border-right: 1px solid white;
+    border-bottom: 1px solid white;
+}
+
+table.docutils td p {
+    margin-top: 0;
+    margin-bottom: 0.3em;
+}
+
+table.field-list td, table.field-list th {
+    border: 0 !important;
+    word-break: break-word;
+}
+
+table.footnote td, table.footnote th {
+    border: 0 !important;
+}
+
+th {
+    color: white;
+    text-align: left;
+    padding-right: 5px;
+    background-color: #82A0BE;
+}
+
+div.literal-block-wrapper div.code-block-caption {
+    background-color: #EEE;
+    border-style: solid;
+    border-color: #CCC;
+    border-width: 1px 5px;
+}
+
+/* WIDE DESKTOP STYLE */
+ at media only screen and (min-width: 1176px) {
+body {
+    margin: 0 40px 0 40px;
+}
+}
+
+/* TABLET STYLE */
+ at media only screen and (min-width: 768px) and (max-width: 991px) {
+body {
+    margin: 0 40px 0 40px;
+}
+}
+
+/* MOBILE LAYOUT (PORTRAIT/320px) */
+ at media only screen and (max-width: 767px) {
+body {
+    margin: 0;
+}
+div.bodywrapper {
+    margin: 0;
+    width: 100%;
+    border: none;
+}
+div.sphinxsidebar {
+    display: none;
+}
+}
+
+/* MOBILE LAYOUT (LANDSCAPE/480px) */
+ at media only screen and (min-width: 480px) and (max-width: 767px) {
+body {
+    margin: 0 20px 0 20px;
+}
+}
+
+/* RETINA OVERRIDES */
+ at media
+only screen and (-webkit-min-device-pixel-ratio: 2),
+only screen and (min-device-pixel-ratio: 2) {
+}
+
+/* -- end ------------------------------------------------------------------- */
\ No newline at end of file

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/bizstyle.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/bizstyle.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/bizstyle.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,41 @@
+//
+// bizstyle.js
+// ~~~~~~~~~~~
+//
+// Sphinx javascript -- for bizstyle theme.
+//
+// This theme was created by referring to 'sphinxdoc'
+//
+// :copyright: Copyright 2012-2014 by Sphinx team, see AUTHORS.
+// :license: BSD, see LICENSE for details.
+//
+$(document).ready(function(){
+    if (navigator.userAgent.indexOf('iPhone') > 0 ||
+        navigator.userAgent.indexOf('Android') > 0) {
+        $("li.nav-item-0 a").text("Top");
+    }
+
+    $("div.related:first ul li:not(.right) a").slice(1).each(function(i, item){
+        if (item.text.length > 20) {
+            var tmpstr = item.text
+            $(item).attr("title", tmpstr);
+            $(item).text(tmpstr.substr(0, 17) + "...");
+        }
+    });
+    $("div.related:last ul li:not(.right) a").slice(1).each(function(i, item){
+        if (item.text.length > 20) {
+            var tmpstr = item.text
+            $(item).attr("title", tmpstr);
+            $(item).text(tmpstr.substr(0, 17) + "...");
+        }
+    });
+});
+
+$(window).resize(function(){
+    if ($(window).width() <= 776) {
+        $("li.nav-item-0 a").text("Top");
+    }
+    else {
+        $("li.nav-item-0 a").text("pplib 0.1 documentation");
+    }
+});
\ No newline at end of file

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment-bright.png
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment-bright.png
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment-bright.png	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment-bright.png	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment-bright.png
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment-close.png
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment-close.png
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment-close.png	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment-close.png	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment-close.png
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment.png
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment.png
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment.png	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment.png	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/comment.png
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/css3-mediaqueries.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/css3-mediaqueries.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/css3-mediaqueries.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1 @@
+if(typeof Object.create!=="function"){Object.create=function(e){function t(){}t.prototype=e;return new t}}var ua={toString:function(){return navigator.userAgent},test:function(e){return this.toString().toLowerCase().indexOf(e.toLowerCase())>-1}};ua.version=(ua.toString().toLowerCase().match(/[\s\S]+(?:rv|it|ra|ie)[\/: ]([\d.]+)/)||[])[1];ua.webkit=ua.test("webkit");ua.gecko=ua.test("gecko")&&!ua.webkit;ua.opera=ua.test("opera");ua.ie=ua.test("msie")&&!ua.opera;ua.ie6=ua.ie&&document.compatMode&&typeof document.documentElement.style.maxHeight==="undefined";ua.ie7=ua.ie&&document.documentElement&&typeof document.documentElement.style.maxHeight!=="undefined"&&typeof XDomainRequest==="undefined";ua.ie8=ua.ie&&typeof XDomainRequest!=="undefined";var domReady=function(){var e=[];var t=function(){if(!arguments.callee.done){arguments.callee.done=true;for(var t=0;t<e.length;t++){e[t]()}}};if(document.addEventListener){document.addEventListener("DOMContentLoaded",t,false)}if(ua.ie){(function(){try{document.documentElement.doScroll("left")}catch(e){setTimeout(arguments.callee,50);return}t()})();document.onreadystatechange=function(){if(document.readyState==="complete"){document.onreadystatechange=null;t()}}}if(ua.webkit&&document.readyState){(function(){if(document.readyState!=="loading"){t()}else{setTimeout(arguments.callee,10)}})()}window.onload=t;return function(t){if(typeof t==="function"){e[e.length]=t}return t}}();var cssHelper=function(){var e={BLOCKS:/[^\s{;][^{;]*\{(?:[^{}]*\{[^{}]*\}[^{}]*|[^{}]*)*\}/g,BLOCKS_INSIDE:/[^\s{][^{]*\{[^{}]*\}/g,DECLARATIONS:/[a-zA-Z\-]+[^;]*:[^;]+;/g,RELATIVE_URLS:/url\(['"]?([^\/\)'"][^:\)'"]+)['"]?\)/g,REDUNDANT_COMPONENTS:/(?:\/\*([^*\\\\]|\*(?!\/))+\*\/|@import[^;]+;)/g,REDUNDANT_WHITESPACE:/\s*(,|:|;|\{|\})\s*/g,WHITESPACE_IN_PARENTHESES:/\(\s*(\S*)\s*\)/g,MORE_WHITESPACE:/\s{2,}/g,FINAL_SEMICOLONS:/;\}/g,NOT_WHITESPACE:/\S+/g};var t,n=false;var r=[];var s=function(e){if(typeof e==="function"){r[r.length]=e}};var o=function(){for(var e=0;e<r.length;e++){r[e](t)}};var u=!
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 window.onresize||function(){};return function(){e();s()}}()};var m=document.documentElement;m.style.marginLeft="-32767px";setTimeout(function(){m.style.marginLeft=""},5e3);return function(){if(!i()){cssHelper.addListener("newStyleParsed",function(e){c(e.cssHelperParsed.stylesheet)});cssHelper.addListener("cssMediaQueriesTested",function(){if(ua.ie){m.style.width="1px"}setTimeout(function(){m.style.width="";m.style.marginLeft=""},0);cssHelper.removeListener("cssMediaQueriesTested",arguments.callee)});s();p()}else{m.style.marginLeft=""}v()}}());try{document.execCommand("BackgroundImageCache",false,true)}catch(e){}

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/css3-mediaqueries_src.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/css3-mediaqueries_src.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/css3-mediaqueries_src.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,1104 @@
+/*
+css3-mediaqueries.js - CSS Helper and CSS3 Media Queries Enabler
+
+author: Wouter van der Graaf <wouter at dynora nl>
+version: 1.0 (20110330)
+license: MIT
+website: http://code.google.com/p/css3-mediaqueries-js/
+
+W3C spec: http://www.w3.org/TR/css3-mediaqueries/
+
+Note: use of embedded <style> is not recommended when using media queries, because IE  has no way of returning the raw literal css text from a <style> element.
+*/
+
+
+// true prototypal inheritance (http://javascript.crockford.com/prototypal.html)
+if (typeof Object.create !== 'function') {
+	Object.create = function (o) {
+		function F() {}
+		F.prototype = o;
+		return new F();
+	};
+}
+
+
+// user agent sniffing shortcuts
+var ua = {
+	toString: function () {
+		return navigator.userAgent;
+	},
+	test: function (s) {
+		return this.toString().toLowerCase().indexOf(s.toLowerCase()) > -1;
+	}
+};
+ua.version = (ua.toString().toLowerCase().match(/[\s\S]+(?:rv|it|ra|ie)[\/: ]([\d.]+)/) || [])[1];
+ua.webkit = ua.test('webkit');
+ua.gecko = ua.test('gecko') && !ua.webkit;
+ua.opera = ua.test('opera');
+ua.ie = ua.test('msie') && !ua.opera;
+ua.ie6 = ua.ie && document.compatMode && typeof document.documentElement.style.maxHeight === 'undefined';
+ua.ie7 = ua.ie && document.documentElement && typeof document.documentElement.style.maxHeight !== 'undefined' && typeof XDomainRequest === 'undefined';
+ua.ie8 = ua.ie && typeof XDomainRequest !== 'undefined';
+
+
+
+// initialize when DOM content is loaded
+var domReady = function () {
+	var fns = [];
+	var init = function () {
+		if (!arguments.callee.done) { // run init functions once
+			arguments.callee.done = true;
+			for (var i = 0; i < fns.length; i++) {
+				fns[i]();
+			}
+		}
+	};
+
+	// listeners for different browsers
+	if (document.addEventListener) {
+		document.addEventListener('DOMContentLoaded', init, false);
+	}
+	if (ua.ie) {
+		(function () {
+			try {
+				// throws errors until after ondocumentready
+				document.documentElement.doScroll('left');
+			}
+			catch (e) {
+				setTimeout(arguments.callee, 50);
+				return;
+			}
+			// no errors, fire
+			init();
+		})();
+		// trying to always fire before onload
+		document.onreadystatechange = function () {
+			if (document.readyState === 'complete') {
+				document.onreadystatechange = null;
+				init();
+			}
+		};
+	}
+	if (ua.webkit && document.readyState) {
+		(function () {
+			if (document.readyState !== 'loading') {
+				init();
+			}
+			else {
+				setTimeout(arguments.callee, 10);
+			}
+		})();
+	}
+	window.onload = init; // fallback
+
+	return function (fn) { // add fn to init functions
+		if (typeof fn === 'function') {
+			fns[fns.length] = fn;
+		}
+		return fn;
+	};
+}();
+
+
+
+// helper library for parsing css to objects
+var cssHelper = function () {
+
+	var regExp = {
+		BLOCKS: /[^\s{;][^{;]*\{(?:[^{}]*\{[^{}]*\}[^{}]*|[^{}]*)*\}/g,
+		BLOCKS_INSIDE: /[^\s{][^{]*\{[^{}]*\}/g,
+		DECLARATIONS: /[a-zA-Z\-]+[^;]*:[^;]+;/g,
+		RELATIVE_URLS: /url\(['"]?([^\/\)'"][^:\)'"]+)['"]?\)/g,
+		// strip whitespace and comments, @import is evil
+		REDUNDANT_COMPONENTS: /(?:\/\*([^*\\\\]|\*(?!\/))+\*\/|@import[^;]+;)/g,
+		REDUNDANT_WHITESPACE: /\s*(,|:|;|\{|\})\s*/g,
+        WHITESPACE_IN_PARENTHESES: /\(\s*(\S*)\s*\)/g,
+		MORE_WHITESPACE: /\s{2,}/g,
+		FINAL_SEMICOLONS: /;\}/g,
+		NOT_WHITESPACE: /\S+/g
+	};
+
+	var parsed, parsing = false;
+
+	var waiting = [];
+	var wait = function (fn) {
+		if (typeof fn === 'function') {
+			waiting[waiting.length] = fn;
+		}
+	};
+	var ready = function () {
+		for (var i = 0; i < waiting.length; i++) {
+			waiting[i](parsed);
+		}
+	};
+	var events = {};
+	var broadcast = function (n, v) {
+		if (events[n]) {
+			var listeners = events[n].listeners;
+			if (listeners) {
+				for (var i = 0; i < listeners.length; i++) {
+					listeners[i](v);
+				}
+			}
+		}
+	};
+
+	var requestText = function (url, fnSuccess, fnFailure) {
+		if (ua.ie && !window.XMLHttpRequest) {
+			window.XMLHttpRequest = function () {
+				return new ActiveXObject('Microsoft.XMLHTTP');
+			};
+		}
+		if (!XMLHttpRequest) {
+			return '';
+		}
+		var r = new XMLHttpRequest();
+		try {
+			r.open('get', url, true);
+			r.setRequestHeader('X_REQUESTED_WITH', 'XMLHttpRequest');
+		}
+		catch (e) {
+			fnFailure();
+			return;
+		}
+		var done = false;
+		setTimeout(function () {
+			done = true;
+		}, 5000);
+		document.documentElement.style.cursor = 'progress';
+		r.onreadystatechange = function () {
+			if (r.readyState === 4 && !done) {
+				if (!r.status && location.protocol === 'file:' ||
+						(r.status >= 200 && r.status < 300) ||
+						r.status === 304 ||
+						navigator.userAgent.indexOf('Safari') > -1 && typeof r.status === 'undefined') {
+					fnSuccess(r.responseText);
+				}
+				else {
+					fnFailure();
+				}
+				document.documentElement.style.cursor = '';
+				r = null; // avoid memory leaks
+			}
+		};
+		r.send('');
+	};
+
+	var sanitize = function (text) {
+		text = text.replace(regExp.REDUNDANT_COMPONENTS, '');
+		text = text.replace(regExp.REDUNDANT_WHITESPACE, '$1');
+        text = text.replace(regExp.WHITESPACE_IN_PARENTHESES, '($1)');
+		text = text.replace(regExp.MORE_WHITESPACE, ' ');
+		text = text.replace(regExp.FINAL_SEMICOLONS, '}'); // optional final semicolons
+		return text;
+	};
+
+	var objects = {
+	    stylesheet: function (el) {
+	        var o = {};
+	        var amqs = [], mqls = [], rs = [], rsw = [];
+	        var s = el.cssHelperText;
+
+	        // add attribute media queries
+	        var attr = el.getAttribute('media');
+	        if (attr) {
+	            var qts = attr.toLowerCase().split(',')
+	        }
+	        else {
+	            var qts = ['all'] // imply 'all'
+            }
+	        for (var i = 0; i < qts.length; i++) {
+	            amqs[amqs.length] = objects.mediaQuery(qts[i], o);
+	        }
+
+	        // add media query lists and rules (top down order)
+		    var blocks = s.match(regExp.BLOCKS); // @charset is not a block
+		    if (blocks !== null) {
+			    for (var i = 0; i < blocks.length; i++) {
+				    if (blocks[i].substring(0, 7) === '@media ') { // media query (list)
+					    var mql = objects.mediaQueryList(blocks[i], o);
+					    rs = rs.concat(mql.getRules());
+					    mqls[mqls.length] = mql;
+				    }
+				    else { // regular rule set, page context (@page) or font description (@font-face)
+					    rs[rs.length] = rsw[rsw.length] = objects.rule(blocks[i], o, null);
+				    }
+			    }
+		    }
+
+	        o.element = el;
+	        o.getCssText = function () {
+	            return s;
+	        };
+	        o.getAttrMediaQueries = function () {
+	            return amqs;
+	        };
+	        o.getMediaQueryLists = function () {
+	            return mqls;
+	        };
+	        o.getRules = function () {
+	            return rs;
+	        };
+	        o.getRulesWithoutMQ = function () {
+	            return rsw;
+	        };
+	        return o;
+	    },
+
+		mediaQueryList: function (s, stsh) {
+			var o = {};
+			var idx = s.indexOf('{');
+			var lt = s.substring(0, idx);
+			s = s.substring(idx + 1, s.length - 1);
+			var mqs = [], rs = [];
+
+			// add media queries
+			var qts = lt.toLowerCase().substring(7).split(',');
+			for (var i = 0; i < qts.length; i++) { // parse each media query
+				mqs[mqs.length] = objects.mediaQuery(qts[i], o);
+			}
+
+			// add rule sets
+			var rts = s.match(regExp.BLOCKS_INSIDE);
+			if (rts !== null) {
+				for (i = 0; i < rts.length; i++) {
+					rs[rs.length] = objects.rule(rts[i], stsh, o);
+				}
+			}
+
+			o.type = 'mediaQueryList';
+			o.getMediaQueries = function () {
+				return mqs;
+			};
+			o.getRules = function () {
+				return rs;
+			};
+			o.getListText = function () {
+				return lt;
+			};
+			o.getCssText = function () {
+				return s;
+			};
+			return o;
+		},
+
+		mediaQuery: function (s, listOrSheet) {
+			s = s || '';
+			var mql, stsh;
+			if (listOrSheet.type === 'mediaQueryList') {
+			    mql = listOrSheet;
+		    }
+		    else {
+		        stsh = listOrSheet;
+		    }
+			var not = false, type;
+			var expr = [];
+			var valid = true;
+			var tokens = s.match(regExp.NOT_WHITESPACE);
+
+
+
+			for (var i = 0; i < tokens.length; i++) {
+				var token = tokens[i];
+				if (!type && (token === 'not' || token === 'only')) { // 'not' and 'only' keywords
+					// keyword 'only' does nothing, as if it was not present
+					if (token === 'not') {
+						not = true;
+					}
+				}
+				else if (!type) { // media type
+					type = token;
+				}
+				else if (token.charAt(0) === '(') { // media feature expression
+					var pair = token.substring(1, token.length - 1).split(':');
+					expr[expr.length] = {
+						mediaFeature: pair[0],
+						value: pair[1] || null
+					};
+				}
+			}
+
+			return {
+			    getQueryText: function () {
+			        return s;
+			    },
+			    getAttrStyleSheet: function () {
+			        return stsh || null;
+			    },
+				getList: function () {
+					return mql || null;
+				},
+				getValid: function () {
+					return valid;
+				},
+				getNot: function () {
+					return not;
+				},
+				getMediaType: function () {
+					return type;
+				},
+				getExpressions: function () {
+					return expr;
+				}
+			};
+		},
+
+		rule: function (s, stsh, mql) {
+			var o = {};
+			var idx = s.indexOf('{');
+			var st = s.substring(0, idx);
+			var ss = st.split(',');
+			var ds = [];
+			var dts = s.substring(idx + 1, s.length - 1).split(';');
+			for (var i = 0; i < dts.length; i++) {
+				ds[ds.length] = objects.declaration(dts[i], o);
+			}
+
+			o.getStylesheet = function () {
+			    return stsh || null;
+			};
+			o.getMediaQueryList = function () {
+				return mql || null;
+			};
+			o.getSelectors = function () {
+				return ss;
+			};
+			o.getSelectorText = function () {
+				return st;
+			};
+			o.getDeclarations = function () {
+				return ds;
+			};
+			o.getPropertyValue = function (n) {
+				for (var i = 0; i < ds.length; i++) {
+					if (ds[i].getProperty() === n) {
+						return ds[i].getValue();
+					}
+				}
+				return null;
+			};
+			return o;
+		},
+
+		declaration: function (s, r) {
+			var idx = s.indexOf(':');
+			var p = s.substring(0, idx);
+			var v = s.substring(idx + 1);
+			return {
+				getRule: function () {
+					return r || null;
+				},
+				getProperty: function () {
+					return p;
+				},
+				getValue: function () {
+					return v;
+				}
+			};
+		}
+	};
+
+	var parseText = function (el) {
+		if (typeof el.cssHelperText !== 'string') {
+			return;
+		}
+		var o = {
+		    stylesheet: null,
+			mediaQueryLists: [],
+			rules: [],
+			selectors: {},
+			declarations: [],
+			properties: {}
+		};
+
+		// build stylesheet object
+		var stsh = o.stylesheet = objects.stylesheet(el);
+
+		// collect media query lists
+		var mqls = o.mediaQueryLists = stsh.getMediaQueryLists();
+
+		// collect all rules
+		var ors = o.rules = stsh.getRules();
+
+		// collect all selectors
+		var oss = o.selectors;
+		var collectSelectors = function (r) {
+			var ss = r.getSelectors();
+			for (var i = 0; i < ss.length; i++) {
+				var n = ss[i];
+				if (!oss[n]) {
+					oss[n] = [];
+				}
+				oss[n][oss[n].length] = r;
+			}
+		};
+		for (var i = 0; i < ors.length; i++) {
+			collectSelectors(ors[i]);
+		}
+
+		// collect all declarations
+		var ods = o.declarations;
+		for (i = 0; i < ors.length; i++) {
+			ods = o.declarations = ods.concat(ors[i].getDeclarations());
+		}
+
+		// collect all properties
+		var ops = o.properties;
+		for (i = 0; i < ods.length; i++) {
+			var n = ods[i].getProperty();
+			if (!ops[n]) {
+				ops[n] = [];
+			}
+			ops[n][ops[n].length] = ods[i];
+		}
+
+		el.cssHelperParsed = o;
+		parsed[parsed.length] = el;
+		return o;
+	};
+
+	var parseEmbedded = function (el, s) {
+	    return;
+	    // This function doesn't work because of a bug in IE, where innerHTML gives us parsed css instead of raw literal.
+		el.cssHelperText = sanitize(s || el.innerHTML);
+		return parseText(el);
+	};
+
+	var parse = function () {
+		parsing = true;
+		parsed = [];
+		var linked = [];
+		var finish = function () {
+			for (var i = 0; i < linked.length; i++) {
+				parseText(linked[i]);
+			}
+			var styles = document.getElementsByTagName('style');
+			for (i = 0; i < styles.length; i++) {
+				parseEmbedded(styles[i]);
+			}
+			parsing = false;
+			ready();
+		};
+		var links = document.getElementsByTagName('link');
+		for (var i = 0; i < links.length; i++) {
+			var link = links[i];
+			if (link.getAttribute('rel').indexOf('style') > -1 && link.href && link.href.length !== 0 && !link.disabled) {
+				linked[linked.length] = link;
+			}
+		}
+		if (linked.length > 0) {
+			var c = 0;
+			var checkForFinish = function () {
+				c++;
+				if (c === linked.length) { // parse in right order, so after last link is read
+					finish();
+				}
+			};
+			var processLink = function (link) {
+				var href = link.href;
+				requestText(href, function (text) {
+					// fix url's
+					text = sanitize(text).replace(regExp.RELATIVE_URLS, 'url(' + href.substring(0, href.lastIndexOf('/')) + '/$1)');
+					link.cssHelperText = text;
+					checkForFinish();
+				}, checkForFinish);
+			};
+			for (i = 0; i < linked.length; i++) {
+				processLink(linked[i]);
+			}
+		}
+		else {
+			finish();
+		}
+	};
+
+	var types = {
+	    stylesheets: 'array',
+		mediaQueryLists: 'array',
+		rules: 'array',
+		selectors: 'object',
+		declarations: 'array',
+		properties: 'object'
+	};
+
+	var collections = {
+	    stylesheets: null,
+		mediaQueryLists: null,
+		rules: null,
+		selectors: null,
+		declarations: null,
+		properties: null
+	};
+
+	var addToCollection = function (name, v) {
+		if (collections[name] !== null) {
+			if (types[name] === 'array') {
+				return (collections[name] = collections[name].concat(v));
+			}
+			else {
+				var c = collections[name];
+				for (var n in v) {
+					if (v.hasOwnProperty(n)) {
+						if (!c[n]) {
+							c[n] = v[n];
+						}
+						else {
+							c[n] = c[n].concat(v[n]);
+						}
+					}
+				}
+				return c;
+			}
+		}
+	};
+
+	var collect = function (name) {
+		collections[name] = (types[name] === 'array') ? [] : {};
+		for (var i = 0; i < parsed.length; i++) {
+		    var pname = name === 'stylesheets' ? 'stylesheet' : name; // the exception
+			addToCollection(name, parsed[i].cssHelperParsed[pname]);
+		}
+		return collections[name];
+	};
+
+	// viewport size
+	var getViewportSize = function (d) {
+		if (typeof window.innerWidth != 'undefined') {
+			return window['inner' + d];
+		}
+		else if (typeof document.documentElement !== 'undefined'
+				&& typeof document.documentElement.clientWidth !== 'undefined'
+				&& document.documentElement.clientWidth != 0) {
+			return document.documentElement['client' + d];
+		}
+	};
+
+	// public static functions
+	return {
+		addStyle: function (s, mediaTypes, process) {
+			var el = document.createElement('style');
+			el.setAttribute('type', 'text/css');
+			if (mediaTypes && mediaTypes.length > 0) {
+			    el.setAttribute('media', mediaTypes.join(','));
+			}
+			document.getElementsByTagName('head')[0].appendChild(el);
+			if (el.styleSheet) { // IE
+				el.styleSheet.cssText = s;
+			}
+			else {
+				el.appendChild(document.createTextNode(s));
+			}
+			el.addedWithCssHelper = true;
+			if (typeof process === 'undefined' || process === true) {
+				cssHelper.parsed(function (parsed) {
+					var o = parseEmbedded(el, s);
+					for (var n in o) {
+						if (o.hasOwnProperty(n)) {
+							addToCollection(n, o[n]);
+						}
+					}
+					broadcast('newStyleParsed', el);
+				});
+			}
+			else {
+				el.parsingDisallowed = true;
+			}
+			return el;
+		},
+
+		removeStyle: function (el) {
+			return el.parentNode.removeChild(el);
+		},
+
+		parsed: function (fn) {
+			if (parsing) {
+				wait(fn);
+			}
+			else {
+				if (typeof parsed !== 'undefined') {
+					if (typeof fn === 'function') {
+						fn(parsed);
+					}
+				}
+				else {
+					wait(fn);
+					parse();
+				}
+			}
+		},
+
+		stylesheets: function (fn) {
+		    cssHelper.parsed(function (parsed) {
+		        fn(collections.stylesheets || collect('stylesheets'));
+		    });
+		},
+
+		mediaQueryLists: function (fn) {
+			cssHelper.parsed(function (parsed) {
+				fn(collections.mediaQueryLists || collect('mediaQueryLists'));
+			});
+		},
+
+		rules: function (fn) {
+			cssHelper.parsed(function (parsed) {
+				fn(collections.rules || collect('rules'));
+			});
+		},
+
+		selectors: function (fn) {
+			cssHelper.parsed(function (parsed) {
+				fn(collections.selectors || collect('selectors'));
+			});
+		},
+
+		declarations: function (fn) {
+			cssHelper.parsed(function (parsed) {
+				fn(collections.declarations || collect('declarations'));
+			});
+		},
+
+		properties: function (fn) {
+			cssHelper.parsed(function (parsed) {
+				fn(collections.properties || collect('properties'));
+			});
+		},
+
+		broadcast: broadcast,
+
+		addListener: function (n, fn) { // in case n is 'styleadd': added function is called everytime style is added and parsed
+			if (typeof fn === 'function') {
+				if (!events[n]) {
+					events[n] = {
+						listeners: []
+					};
+				}
+				events[n].listeners[events[n].listeners.length] = fn;
+			}
+		},
+
+		removeListener: function (n, fn) {
+			if (typeof fn === 'function' && events[n]) {
+				var ls = events[n].listeners;
+				for (var i = 0; i < ls.length; i++) {
+					if (ls[i] === fn) {
+						ls.splice(i, 1);
+						i -= 1;
+					}
+				}
+			}
+		},
+
+		getViewportWidth: function () {
+			return getViewportSize('Width');
+		},
+
+		getViewportHeight: function () {
+			return getViewportSize('Height');
+		}
+	};
+}();
+
+
+
+// function to test and apply parsed media queries against browser capabilities
+domReady(function enableCssMediaQueries() {
+	var meter;
+
+	var regExp = {
+		LENGTH_UNIT: /[0-9]+(em|ex|px|in|cm|mm|pt|pc)$/,
+		RESOLUTION_UNIT: /[0-9]+(dpi|dpcm)$/,
+		ASPECT_RATIO: /^[0-9]+\/[0-9]+$/,
+		ABSOLUTE_VALUE: /^[0-9]*(\.[0-9]+)*$/
+	};
+
+	var styles = [];
+
+	var nativeSupport = function () {
+		// check support for media queries
+		var id = 'css3-mediaqueries-test';
+		var el = document.createElement('div');
+		el.id = id;
+		var style = cssHelper.addStyle('@media all and (width) { #' + id +
+			' { width: 1px !important; } }', [], false); // false means don't parse this temp style
+		document.body.appendChild(el);
+		var ret = el.offsetWidth === 1;
+		style.parentNode.removeChild(style);
+		el.parentNode.removeChild(el);
+		nativeSupport = function () {
+			return ret;
+		};
+		return ret;
+	};
+
+	var createMeter = function () { // create measuring element
+		meter = document.createElement('div');
+		meter.style.cssText = 'position:absolute;top:-9999em;left:-9999em;' +
+			'margin:0;border:none;padding:0;width:1em;font-size:1em;'; // cssText is needed for IE, works for the others
+		document.body.appendChild(meter);
+		// meter must have browser default font size of 16px
+		if (meter.offsetWidth !== 16) {
+			meter.style.fontSize = 16 / meter.offsetWidth + 'em';
+		}
+		meter.style.width = '';
+	};
+
+	var measure = function (value) {
+		meter.style.width = value;
+		var amount = meter.offsetWidth;
+		meter.style.width = '';
+		return amount;
+	};
+
+	var testMediaFeature = function (feature, value) {
+		// non-testable features: monochrome|min-monochrome|max-monochrome|scan|grid
+		var l = feature.length;
+		var min = (feature.substring(0, 4) === 'min-');
+		var max = (!min && feature.substring(0, 4) === 'max-');
+
+		if (value !== null) { // determine value type and parse to usable amount
+			var valueType;
+			var amount;
+			if (regExp.LENGTH_UNIT.exec(value)) {
+				valueType = 'length';
+				amount = measure(value);
+			}
+			else if (regExp.RESOLUTION_UNIT.exec(value)) {
+				valueType = 'resolution';
+				amount = parseInt(value, 10);
+				var unit = value.substring((amount + '').length);
+			}
+			else if (regExp.ASPECT_RATIO.exec(value)) {
+				valueType = 'aspect-ratio';
+				amount = value.split('/');
+			}
+			else if (regExp.ABSOLUTE_VALUE) {
+				valueType = 'absolute';
+				amount = value;
+			}
+			else {
+				valueType = 'unknown';
+			}
+		}
+
+		var width, height;
+		if ('device-width' === feature.substring(l - 12, l)) { // screen width
+			width = screen.width;
+			if (value !== null) {
+				if (valueType === 'length') {
+					return ((min && width >= amount) || (max && width < amount) || (!min && !max && width === amount));
+				}
+				else {
+					return false;
+				}
+			}
+			else { // test width without value
+				return width > 0;
+			}
+		}
+		else if ('device-height' === feature.substring(l - 13, l)) { // screen height
+			height = screen.height;
+			if (value !== null) {
+				if (valueType === 'length') {
+					return ((min && height >= amount) || (max && height < amount) || (!min && !max && height === amount));
+				}
+				else {
+					return false;
+				}
+			}
+			else { // test height without value
+				return height > 0;
+			}
+		}
+		else if ('width' === feature.substring(l - 5, l)) { // viewport width
+			width = document.documentElement.clientWidth || document.body.clientWidth; // the latter for IE quirks mode
+			if (value !== null) {
+				if (valueType === 'length') {
+					return ((min && width >= amount) || (max && width < amount) || (!min && !max && width === amount));
+				}
+				else {
+					return false;
+				}
+			}
+			else { // test width without value
+				return width > 0;
+			}
+		}
+		else if ('height' === feature.substring(l - 6, l)) { // viewport height
+			height = document.documentElement.clientHeight || document.body.clientHeight; // the latter for IE quirks mode
+			if (value !== null) {
+				if (valueType === 'length') {
+					return ((min && height >= amount) || (max && height < amount) || (!min && !max && height === amount));
+				}
+				else {
+					return false;
+				}
+			}
+			else { // test height without value
+				return height > 0;
+			}
+		}
+		else if ('device-aspect-ratio' === feature.substring(l - 19, l)) { // screen aspect ratio
+			return valueType === 'aspect-ratio' && screen.width * amount[1] === screen.height * amount[0];
+		}
+		else if ('color-index' === feature.substring(l - 11, l)) { // number of colors
+			var colors = Math.pow(2, screen.colorDepth);
+			if (value !== null) {
+				if (valueType === 'absolute') {
+					return ((min && colors >= amount) || (max && colors < amount) || (!min && !max && colors === amount));
+				}
+				else {
+					return false;
+				}
+			}
+			else { // test height without value
+				return colors > 0;
+			}
+		}
+		else if ('color' === feature.substring(l - 5, l)) { // bits per color component
+			var color = screen.colorDepth;
+			if (value !== null) {
+				if (valueType === 'absolute') {
+					return ((min && color >= amount) || (max && color < amount) || (!min && !max && color === amount));
+				}
+				else {
+					return false;
+				}
+			}
+			else { // test height without value
+				return color > 0;
+			}
+		}
+		else if ('resolution' === feature.substring(l - 10, l)) {
+			var res;
+			if (unit === 'dpcm') {
+				res = measure('1cm');
+			}
+			else {
+				res = measure('1in');
+			}
+			if (value !== null) {
+				if (valueType === 'resolution') {
+					return ((min && res >= amount) || (max && res < amount) || (!min && !max && res === amount));
+				}
+				else {
+					return false;
+				}
+			}
+			else { // test height without value
+				return res > 0;
+			}
+		}
+		else {
+			return false;
+		}
+	};
+
+	var testMediaQuery = function (mq) {
+		var test = mq.getValid();
+		var expressions = mq.getExpressions();
+		var l = expressions.length;
+		if (l > 0) {
+			for (var i = 0; i < l && test; i++) {
+				test = testMediaFeature(expressions[i].mediaFeature, expressions[i].value);
+			}
+			var not = mq.getNot();
+			return (test && !not || not && !test);
+		}
+		return test;
+	};
+
+	var testMediaQueryList = function (mql, ts) {
+	    // ts is null or an array with any media type but 'all'.
+		var mqs = mql.getMediaQueries();
+		var t = {};
+		for (var i = 0; i < mqs.length; i++) {
+		    var type = mqs[i].getMediaType();
+		    if (mqs[i].getExpressions().length === 0) {
+		        continue;
+		        // TODO: Browser check! Assuming old browsers do apply the bare media types, even in a list with media queries.
+		    }
+		    var typeAllowed = true;
+		    if (type !== 'all' && ts && ts.length > 0) {
+		        typeAllowed = false;
+		        for (var j = 0; j < ts.length; j++) {
+		            if (ts[j] === type) {
+		                typeAllowed = true;
+                    }
+		        }
+		    }
+			if (typeAllowed && testMediaQuery(mqs[i])) {
+				t[type] = true;
+			}
+		}
+		var s = [], c = 0;
+		for (var n in t) {
+			if (t.hasOwnProperty(n)) {
+				if (c > 0) {
+					s[c++] = ',';
+				}
+				s[c++] = n;
+			}
+		}
+		if (s.length > 0) {
+			styles[styles.length] = cssHelper.addStyle('@media ' + s.join('') + '{' + mql.getCssText() + '}', ts, false);
+		}
+	};
+
+	var testMediaQueryLists = function (mqls, ts) {
+		for (var i = 0; i < mqls.length; i++) {
+			testMediaQueryList(mqls[i], ts);
+		}
+	};
+
+	var testStylesheet = function (stsh) {
+	    var amqs = stsh.getAttrMediaQueries();
+	    var allPassed = false;
+	    var t = {};
+		for (var i = 0; i < amqs.length; i++) {
+			if (testMediaQuery(amqs[i])) {
+				t[amqs[i].getMediaType()] = amqs[i].getExpressions().length > 0;
+			}
+		}
+		var ts = [], tswe = [];
+		for (var n in t) {
+			if (t.hasOwnProperty(n)) {
+				ts[ts.length] = n;
+				if (t[n]) {
+				    tswe[tswe.length] = n
+				}
+			    if (n === 'all') {
+			        allPassed = true;
+                }
+			}
+		}
+		if (tswe.length > 0) { // types with query expressions that passed the test
+		    styles[styles.length] = cssHelper.addStyle(stsh.getCssText(), tswe, false);
+		}
+		var mqls = stsh.getMediaQueryLists();
+		if (allPassed) {
+		    // If 'all' in media attribute passed the test, then test all @media types in linked CSS and create style with those types.
+		    testMediaQueryLists(mqls);
+		}
+		else {
+		    // Or else, test only media attribute types that passed the test and also 'all'.
+		    // For positive '@media all', create style with attribute types that passed their test.
+		    testMediaQueryLists(mqls, ts);
+	    }
+    };
+
+	var testStylesheets = function (stshs) {
+	    for (var i = 0; i < stshs.length; i++) {
+	        testStylesheet(stshs[i]);
+	    }
+	    if (ua.ie) {
+			// force repaint in IE
+			document.documentElement.style.display = 'block';
+			setTimeout(function () {
+				document.documentElement.style.display = '';
+			}, 0);
+			// delay broadcast somewhat for IE
+			setTimeout(function () {
+				cssHelper.broadcast('cssMediaQueriesTested');
+			}, 100);
+		}
+		else {
+			cssHelper.broadcast('cssMediaQueriesTested');
+		}
+	};
+
+	var test = function () {
+		for (var i = 0; i < styles.length; i++) {
+			cssHelper.removeStyle(styles[i]);
+		}
+		styles = [];
+		cssHelper.stylesheets(testStylesheets);
+	};
+
+	var scrollbarWidth = 0;
+	var checkForResize = function () {
+		var cvpw = cssHelper.getViewportWidth();
+		var cvph = cssHelper.getViewportHeight();
+
+		// determine scrollbar width in IE, see resizeHandler
+		if (ua.ie) {
+			var el = document.createElement('div');
+			el.style.position = 'absolute';
+			el.style.top = '-9999em';
+			el.style.overflow = 'scroll';
+			document.body.appendChild(el);
+			scrollbarWidth = el.offsetWidth - el.clientWidth;
+			document.body.removeChild(el);
+		}
+
+		var timer;
+		var resizeHandler = function () {
+			var vpw = cssHelper.getViewportWidth();
+			var vph = cssHelper.getViewportHeight();
+			// check whether vp size has really changed, because IE also triggers resize event when body size changes
+			// 20px allowance to accomodate short appearance of scrollbars in IE in some cases
+			if (Math.abs(vpw - cvpw) > scrollbarWidth || Math.abs(vph - cvph) > scrollbarWidth) {
+				cvpw = vpw;
+				cvph = vph;
+				clearTimeout(timer);
+				timer = setTimeout(function () {
+					if (!nativeSupport()) {
+						test();
+					}
+					else {
+						cssHelper.broadcast('cssMediaQueriesTested');
+					}
+				}, 500);
+			}
+		};
+
+		window.onresize = function () {
+			var x = window.onresize || function () {}; // save original
+			return function () {
+				x();
+				resizeHandler();
+			};
+		}();
+	};
+
+	// prevent jumping of layout by hiding everything before painting <body>
+    var docEl = document.documentElement;
+	docEl.style.marginLeft = '-32767px';
+
+	// make sure it comes back after a while
+	setTimeout(function () {
+		docEl.style.marginLeft = '';
+	}, 5000);
+
+	return function () {
+		if (!nativeSupport()) { // if browser doesn't support media queries
+			cssHelper.addListener('newStyleParsed', function (el) {
+				testStylesheet(el.cssHelperParsed.stylesheet);
+			});
+			// return visibility after media queries are tested
+			cssHelper.addListener('cssMediaQueriesTested', function () {
+				// force repaint in IE by changing width
+				if (ua.ie) {
+					docEl.style.width = '1px';
+				}
+				setTimeout(function () {
+					docEl.style.width = ''; // undo width
+					docEl.style.marginLeft = ''; // undo hide
+				}, 0);
+				// remove this listener to prevent following execution
+				cssHelper.removeListener('cssMediaQueriesTested', arguments.callee);
+			});
+			createMeter();
+			test();
+		}
+		else {
+			docEl.style.marginLeft = ''; // undo visibility hidden
+		}
+		checkForResize();
+	};
+}());
+
+
+// bonus: hotfix for IE6 SP1 (bug KB823727)
+try {
+	document.execCommand('BackgroundImageCache', false, true);
+} catch (e) {}

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/doctools.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/doctools.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/doctools.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,315 @@
+/*
+ * doctools.js
+ * ~~~~~~~~~~~
+ *
+ * Sphinx JavaScript utilities for all documentation.
+ *
+ * :copyright: Copyright 2007-2019 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+/**
+ * select a different prefix for underscore
+ */
+$u = _.noConflict();
+
+/**
+ * make the code below compatible with browsers without
+ * an installed firebug like debugger
+if (!window.console || !console.firebug) {
+  var names = ["log", "debug", "info", "warn", "error", "assert", "dir",
+    "dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace",
+    "profile", "profileEnd"];
+  window.console = {};
+  for (var i = 0; i < names.length; ++i)
+    window.console[names[i]] = function() {};
+}
+ */
+
+/**
+ * small helper function to urldecode strings
+ */
+jQuery.urldecode = function(x) {
+  return decodeURIComponent(x).replace(/\+/g, ' ');
+};
+
+/**
+ * small helper function to urlencode strings
+ */
+jQuery.urlencode = encodeURIComponent;
+
+/**
+ * This function returns the parsed url parameters of the
+ * current request. Multiple values per key are supported,
+ * it will always return arrays of strings for the value parts.
+ */
+jQuery.getQueryParameters = function(s) {
+  if (typeof s === 'undefined')
+    s = document.location.search;
+  var parts = s.substr(s.indexOf('?') + 1).split('&');
+  var result = {};
+  for (var i = 0; i < parts.length; i++) {
+    var tmp = parts[i].split('=', 2);
+    var key = jQuery.urldecode(tmp[0]);
+    var value = jQuery.urldecode(tmp[1]);
+    if (key in result)
+      result[key].push(value);
+    else
+      result[key] = [value];
+  }
+  return result;
+};
+
+/**
+ * highlight a given string on a jquery object by wrapping it in
+ * span elements with the given class name.
+ */
+jQuery.fn.highlightText = function(text, className) {
+  function highlight(node, addItems) {
+    if (node.nodeType === 3) {
+      var val = node.nodeValue;
+      var pos = val.toLowerCase().indexOf(text);
+      if (pos >= 0 &&
+          !jQuery(node.parentNode).hasClass(className) &&
+          !jQuery(node.parentNode).hasClass("nohighlight")) {
+        var span;
+        var isInSVG = jQuery(node).closest("body, svg, foreignObject").is("svg");
+        if (isInSVG) {
+          span = document.createElementNS("http://www.w3.org/2000/svg", "tspan");
+        } else {
+          span = document.createElement("span");
+          span.className = className;
+        }
+        span.appendChild(document.createTextNode(val.substr(pos, text.length)));
+        node.parentNode.insertBefore(span, node.parentNode.insertBefore(
+          document.createTextNode(val.substr(pos + text.length)),
+          node.nextSibling));
+        node.nodeValue = val.substr(0, pos);
+        if (isInSVG) {
+          var bbox = span.getBBox();
+          var rect = document.createElementNS("http://www.w3.org/2000/svg", "rect");
+       	  rect.x.baseVal.value = bbox.x;
+          rect.y.baseVal.value = bbox.y;
+          rect.width.baseVal.value = bbox.width;
+          rect.height.baseVal.value = bbox.height;
+          rect.setAttribute('class', className);
+          var parentOfText = node.parentNode.parentNode;
+          addItems.push({
+              "parent": node.parentNode,
+              "target": rect});
+        }
+      }
+    }
+    else if (!jQuery(node).is("button, select, textarea")) {
+      jQuery.each(node.childNodes, function() {
+        highlight(this, addItems);
+      });
+    }
+  }
+  var addItems = [];
+  var result = this.each(function() {
+    highlight(this, addItems);
+  });
+  for (var i = 0; i < addItems.length; ++i) {
+    jQuery(addItems[i].parent).before(addItems[i].target);
+  }
+  return result;
+};
+
+/*
+ * backward compatibility for jQuery.browser
+ * This will be supported until firefox bug is fixed.
+ */
+if (!jQuery.browser) {
+  jQuery.uaMatch = function(ua) {
+    ua = ua.toLowerCase();
+
+    var match = /(chrome)[ \/]([\w.]+)/.exec(ua) ||
+      /(webkit)[ \/]([\w.]+)/.exec(ua) ||
+      /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) ||
+      /(msie) ([\w.]+)/.exec(ua) ||
+      ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) ||
+      [];
+
+    return {
+      browser: match[ 1 ] || "",
+      version: match[ 2 ] || "0"
+    };
+  };
+  jQuery.browser = {};
+  jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true;
+}
+
+/**
+ * Small JavaScript module for the documentation.
+ */
+var Documentation = {
+
+  init : function() {
+    this.fixFirefoxAnchorBug();
+    this.highlightSearchWords();
+    this.initIndexTable();
+    if (DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) {
+      this.initOnKeyListeners();
+    }
+  },
+
+  /**
+   * i18n support
+   */
+  TRANSLATIONS : {},
+  PLURAL_EXPR : function(n) { return n === 1 ? 0 : 1; },
+  LOCALE : 'unknown',
+
+  // gettext and ngettext don't access this so that the functions
+  // can safely bound to a different name (_ = Documentation.gettext)
+  gettext : function(string) {
+    var translated = Documentation.TRANSLATIONS[string];
+    if (typeof translated === 'undefined')
+      return string;
+    return (typeof translated === 'string') ? translated : translated[0];
+  },
+
+  ngettext : function(singular, plural, n) {
+    var translated = Documentation.TRANSLATIONS[singular];
+    if (typeof translated === 'undefined')
+      return (n == 1) ? singular : plural;
+    return translated[Documentation.PLURALEXPR(n)];
+  },
+
+  addTranslations : function(catalog) {
+    for (var key in catalog.messages)
+      this.TRANSLATIONS[key] = catalog.messages[key];
+    this.PLURAL_EXPR = new Function('n', 'return +(' + catalog.plural_expr + ')');
+    this.LOCALE = catalog.locale;
+  },
+
+  /**
+   * add context elements like header anchor links
+   */
+  addContextElements : function() {
+    $('div[id] > :header:first').each(function() {
+      $('<a class="headerlink">\u00B6</a>').
+      attr('href', '#' + this.id).
+      attr('title', _('Permalink to this headline')).
+      appendTo(this);
+    });
+    $('dt[id]').each(function() {
+      $('<a class="headerlink">\u00B6</a>').
+      attr('href', '#' + this.id).
+      attr('title', _('Permalink to this definition')).
+      appendTo(this);
+    });
+  },
+
+  /**
+   * workaround a firefox stupidity
+   * see: https://bugzilla.mozilla.org/show_bug.cgi?id=645075
+   */
+  fixFirefoxAnchorBug : function() {
+    if (document.location.hash && $.browser.mozilla)
+      window.setTimeout(function() {
+        document.location.href += '';
+      }, 10);
+  },
+
+  /**
+   * highlight the search words provided in the url in the text
+   */
+  highlightSearchWords : function() {
+    var params = $.getQueryParameters();
+    var terms = (params.highlight) ? params.highlight[0].split(/\s+/) : [];
+    if (terms.length) {
+      var body = $('div.body');
+      if (!body.length) {
+        body = $('body');
+      }
+      window.setTimeout(function() {
+        $.each(terms, function() {
+          body.highlightText(this.toLowerCase(), 'highlighted');
+        });
+      }, 10);
+      $('<p class="highlight-link"><a href="javascript:Documentation.' +
+        'hideSearchWords()">' + _('Hide Search Matches') + '</a></p>')
+          .appendTo($('#searchbox'));
+    }
+  },
+
+  /**
+   * init the domain index toggle buttons
+   */
+  initIndexTable : function() {
+    var togglers = $('img.toggler').click(function() {
+      var src = $(this).attr('src');
+      var idnum = $(this).attr('id').substr(7);
+      $('tr.cg-' + idnum).toggle();
+      if (src.substr(-9) === 'minus.png')
+        $(this).attr('src', src.substr(0, src.length-9) + 'plus.png');
+      else
+        $(this).attr('src', src.substr(0, src.length-8) + 'minus.png');
+    }).css('display', '');
+    if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) {
+        togglers.click();
+    }
+  },
+
+  /**
+   * helper function to hide the search marks again
+   */
+  hideSearchWords : function() {
+    $('#searchbox .highlight-link').fadeOut(300);
+    $('span.highlighted').removeClass('highlighted');
+  },
+
+  /**
+   * make the url absolute
+   */
+  makeURL : function(relativeURL) {
+    return DOCUMENTATION_OPTIONS.URL_ROOT + '/' + relativeURL;
+  },
+
+  /**
+   * get the current relative url
+   */
+  getCurrentURL : function() {
+    var path = document.location.pathname;
+    var parts = path.split(/\//);
+    $.each(DOCUMENTATION_OPTIONS.URL_ROOT.split(/\//), function() {
+      if (this === '..')
+        parts.pop();
+    });
+    var url = parts.join('/');
+    return path.substring(url.lastIndexOf('/') + 1, path.length - 1);
+  },
+
+  initOnKeyListeners: function() {
+    $(document).keyup(function(event) {
+      var activeElementType = document.activeElement.tagName;
+      // don't navigate when in search box or textarea
+      if (activeElementType !== 'TEXTAREA' && activeElementType !== 'INPUT' && activeElementType !== 'SELECT') {
+        switch (event.keyCode) {
+          case 37: // left
+            var prevHref = $('link[rel="prev"]').prop('href');
+            if (prevHref) {
+              window.location.href = prevHref;
+              return false;
+            }
+          case 39: // right
+            var nextHref = $('link[rel="next"]').prop('href');
+            if (nextHref) {
+              window.location.href = nextHref;
+              return false;
+            }
+        }
+      }
+    });
+  }
+};
+
+// quick alias for translations
+_ = Documentation.gettext;
+
+$(document).ready(function() {
+  Documentation.init();
+});

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/documentation_options.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/documentation_options.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/documentation_options.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,10 @@
+var DOCUMENTATION_OPTIONS = {
+    URL_ROOT: document.getElementById("documentation_options").getAttribute('data-url_root'),
+    VERSION: '0.1',
+    LANGUAGE: 'None',
+    COLLAPSE_INDEX: false,
+    FILE_SUFFIX: '.html',
+    HAS_SOURCE: true,
+    SOURCELINK_SUFFIX: '.txt',
+    NAVIGATION_WITH_KEYS: false,
+};
\ No newline at end of file

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/down-pressed.png
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/down-pressed.png
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/down-pressed.png	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/down-pressed.png	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/down-pressed.png
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/down.png
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/down.png
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/down.png	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/down.png	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/down.png
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/file.png
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/file.png
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/file.png	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/file.png	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/file.png
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/jquery-3.2.1.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/jquery-3.2.1.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/jquery-3.2.1.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,10253 @@
+/*!
+ * jQuery JavaScript Library v3.2.1
+ * https://jquery.com/
+ *
+ * Includes Sizzle.js
+ * https://sizzlejs.com/
+ *
+ * Copyright JS Foundation and other contributors
+ * Released under the MIT license
+ * https://jquery.org/license
+ *
+ * Date: 2017-03-20T18:59Z
+ */
+( function( global, factory ) {
+
+	"use strict";
+
+	if ( typeof module === "object" && typeof module.exports === "object" ) {
+
+		// For CommonJS and CommonJS-like environments where a proper `window`
+		// is present, execute the factory and get jQuery.
+		// For environments that do not have a `window` with a `document`
+		// (such as Node.js), expose a factory as module.exports.
+		// This accentuates the need for the creation of a real `window`.
+		// e.g. var jQuery = require("jquery")(window);
+		// See ticket #14549 for more info.
+		module.exports = global.document ?
+			factory( global, true ) :
+			function( w ) {
+				if ( !w.document ) {
+					throw new Error( "jQuery requires a window with a document" );
+				}
+				return factory( w );
+			};
+	} else {
+		factory( global );
+	}
+
+// Pass this if window is not defined yet
+} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) {
+
+// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1
+// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode
+// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common
+// enough that all such attempts are guarded in a try block.
+"use strict";
+
+var arr = [];
+
+var document = window.document;
+
+var getProto = Object.getPrototypeOf;
+
+var slice = arr.slice;
+
+var concat = arr.concat;
+
+var push = arr.push;
+
+var indexOf = arr.indexOf;
+
+var class2type = {};
+
+var toString = class2type.toString;
+
+var hasOwn = class2type.hasOwnProperty;
+
+var fnToString = hasOwn.toString;
+
+var ObjectFunctionString = fnToString.call( Object );
+
+var support = {};
+
+
+
+	function DOMEval( code, doc ) {
+		doc = doc || document;
+
+		var script = doc.createElement( "script" );
+
+		script.text = code;
+		doc.head.appendChild( script ).parentNode.removeChild( script );
+	}
+/* global Symbol */
+// Defining this global in .eslintrc.json would create a danger of using the global
+// unguarded in another place, it seems safer to define global only for this module
+
+
+
+var
+	version = "3.2.1",
+
+	// Define a local copy of jQuery
+	jQuery = function( selector, context ) {
+
+		// The jQuery object is actually just the init constructor 'enhanced'
+		// Need init if jQuery is called (just allow error to be thrown if not included)
+		return new jQuery.fn.init( selector, context );
+	},
+
+	// Support: Android <=4.0 only
+	// Make sure we trim BOM and NBSP
+	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,
+
+	// Matches dashed string for camelizing
+	rmsPrefix = /^-ms-/,
+	rdashAlpha = /-([a-z])/g,
+
+	// Used by jQuery.camelCase as callback to replace()
+	fcamelCase = function( all, letter ) {
+		return letter.toUpperCase();
+	};
+
+jQuery.fn = jQuery.prototype = {
+
+	// The current version of jQuery being used
+	jquery: version,
+
+	constructor: jQuery,
+
+	// The default length of a jQuery object is 0
+	length: 0,
+
+	toArray: function() {
+		return slice.call( this );
+	},
+
+	// Get the Nth element in the matched element set OR
+	// Get the whole matched element set as a clean array
+	get: function( num ) {
+
+		// Return all the elements in a clean array
+		if ( num == null ) {
+			return slice.call( this );
+		}
+
+		// Return just the one element from the set
+		return num < 0 ? this[ num + this.length ] : this[ num ];
+	},
+
+	// Take an array of elements and push it onto the stack
+	// (returning the new matched element set)
+	pushStack: function( elems ) {
+
+		// Build a new jQuery matched element set
+		var ret = jQuery.merge( this.constructor(), elems );
+
+		// Add the old object onto the stack (as a reference)
+		ret.prevObject = this;
+
+		// Return the newly-formed element set
+		return ret;
+	},
+
+	// Execute a callback for every element in the matched set.
+	each: function( callback ) {
+		return jQuery.each( this, callback );
+	},
+
+	map: function( callback ) {
+		return this.pushStack( jQuery.map( this, function( elem, i ) {
+			return callback.call( elem, i, elem );
+		} ) );
+	},
+
+	slice: function() {
+		return this.pushStack( slice.apply( this, arguments ) );
+	},
+
+	first: function() {
+		return this.eq( 0 );
+	},
+
+	last: function() {
+		return this.eq( -1 );
+	},
+
+	eq: function( i ) {
+		var len = this.length,
+			j = +i + ( i < 0 ? len : 0 );
+		return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] );
+	},
+
+	end: function() {
+		return this.prevObject || this.constructor();
+	},
+
+	// For internal use only.
+	// Behaves like an Array's method, not like a jQuery method.
+	push: push,
+	sort: arr.sort,
+	splice: arr.splice
+};
+
+jQuery.extend = jQuery.fn.extend = function() {
+	var options, name, src, copy, copyIsArray, clone,
+		target = arguments[ 0 ] || {},
+		i = 1,
+		length = arguments.length,
+		deep = false;
+
+	// Handle a deep copy situation
+	if ( typeof target === "boolean" ) {
+		deep = target;
+
+		// Skip the boolean and the target
+		target = arguments[ i ] || {};
+		i++;
+	}
+
+	// Handle case when target is a string or something (possible in deep copy)
+	if ( typeof target !== "object" && !jQuery.isFunction( target ) ) {
+		target = {};
+	}
+
+	// Extend jQuery itself if only one argument is passed
+	if ( i === length ) {
+		target = this;
+		i--;
+	}
+
+	for ( ; i < length; i++ ) {
+
+		// Only deal with non-null/undefined values
+		if ( ( options = arguments[ i ] ) != null ) {
+
+			// Extend the base object
+			for ( name in options ) {
+				src = target[ name ];
+				copy = options[ name ];
+
+				// Prevent never-ending loop
+				if ( target === copy ) {
+					continue;
+				}
+
+				// Recurse if we're merging plain objects or arrays
+				if ( deep && copy && ( jQuery.isPlainObject( copy ) ||
+					( copyIsArray = Array.isArray( copy ) ) ) ) {
+
+					if ( copyIsArray ) {
+						copyIsArray = false;
+						clone = src && Array.isArray( src ) ? src : [];
+
+					} else {
+						clone = src && jQuery.isPlainObject( src ) ? src : {};
+					}
+
+					// Never move original objects, clone them
+					target[ name ] = jQuery.extend( deep, clone, copy );
+
+				// Don't bring in undefined values
+				} else if ( copy !== undefined ) {
+					target[ name ] = copy;
+				}
+			}
+		}
+	}
+
+	// Return the modified object
+	return target;
+};
+
+jQuery.extend( {
+
+	// Unique for each copy of jQuery on the page
+	expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ),
+
+	// Assume jQuery is ready without the ready module
+	isReady: true,
+
+	error: function( msg ) {
+		throw new Error( msg );
+	},
+
+	noop: function() {},
+
+	isFunction: function( obj ) {
+		return jQuery.type( obj ) === "function";
+	},
+
+	isWindow: function( obj ) {
+		return obj != null && obj === obj.window;
+	},
+
+	isNumeric: function( obj ) {
+
+		// As of jQuery 3.0, isNumeric is limited to
+		// strings and numbers (primitives or objects)
+		// that can be coerced to finite numbers (gh-2662)
+		var type = jQuery.type( obj );
+		return ( type === "number" || type === "string" ) &&
+
+			// parseFloat NaNs numeric-cast false positives ("")
+			// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
+			// subtraction forces infinities to NaN
+			!isNaN( obj - parseFloat( obj ) );
+	},
+
+	isPlainObject: function( obj ) {
+		var proto, Ctor;
+
+		// Detect obvious negatives
+		// Use toString instead of jQuery.type to catch host objects
+		if ( !obj || toString.call( obj ) !== "[object Object]" ) {
+			return false;
+		}
+
+		proto = getProto( obj );
+
+		// Objects with no prototype (e.g., `Object.create( null )`) are plain
+		if ( !proto ) {
+			return true;
+		}
+
+		// Objects with prototype are plain iff they were constructed by a global Object function
+		Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor;
+		return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString;
+	},
+
+	isEmptyObject: function( obj ) {
+
+		/* eslint-disable no-unused-vars */
+		// See https://github.com/eslint/eslint/issues/6125
+		var name;
+
+		for ( name in obj ) {
+			return false;
+		}
+		return true;
+	},
+
+	type: function( obj ) {
+		if ( obj == null ) {
+			return obj + "";
+		}
+
+		// Support: Android <=2.3 only (functionish RegExp)
+		return typeof obj === "object" || typeof obj === "function" ?
+			class2type[ toString.call( obj ) ] || "object" :
+			typeof obj;
+	},
+
+	// Evaluates a script in a global context
+	globalEval: function( code ) {
+		DOMEval( code );
+	},
+
+	// Convert dashed to camelCase; used by the css and data modules
+	// Support: IE <=9 - 11, Edge 12 - 13
+	// Microsoft forgot to hump their vendor prefix (#9572)
+	camelCase: function( string ) {
+		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
+	},
+
+	each: function( obj, callback ) {
+		var length, i = 0;
+
+		if ( isArrayLike( obj ) ) {
+			length = obj.length;
+			for ( ; i < length; i++ ) {
+				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
+					break;
+				}
+			}
+		} else {
+			for ( i in obj ) {
+				if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) {
+					break;
+				}
+			}
+		}
+
+		return obj;
+	},
+
+	// Support: Android <=4.0 only
+	trim: function( text ) {
+		return text == null ?
+			"" :
+			( text + "" ).replace( rtrim, "" );
+	},
+
+	// results is for internal usage only
+	makeArray: function( arr, results ) {
+		var ret = results || [];
+
+		if ( arr != null ) {
+			if ( isArrayLike( Object( arr ) ) ) {
+				jQuery.merge( ret,
+					typeof arr === "string" ?
+					[ arr ] : arr
+				);
+			} else {
+				push.call( ret, arr );
+			}
+		}
+
+		return ret;
+	},
+
+	inArray: function( elem, arr, i ) {
+		return arr == null ? -1 : indexOf.call( arr, elem, i );
+	},
+
+	// Support: Android <=4.0 only, PhantomJS 1 only
+	// push.apply(_, arraylike) throws on ancient WebKit
+	merge: function( first, second ) {
+		var len = +second.length,
+			j = 0,
+			i = first.length;
+
+		for ( ; j < len; j++ ) {
+			first[ i++ ] = second[ j ];
+		}
+
+		first.length = i;
+
+		return first;
+	},
+
+	grep: function( elems, callback, invert ) {
+		var callbackInverse,
+			matches = [],
+			i = 0,
+			length = elems.length,
+			callbackExpect = !invert;
+
+		// Go through the array, only saving the items
+		// that pass the validator function
+		for ( ; i < length; i++ ) {
+			callbackInverse = !callback( elems[ i ], i );
+			if ( callbackInverse !== callbackExpect ) {
+				matches.push( elems[ i ] );
+			}
+		}
+
+		return matches;
+	},
+
+	// arg is for internal usage only
+	map: function( elems, callback, arg ) {
+		var length, value,
+			i = 0,
+			ret = [];
+
+		// Go through the array, translating each of the items to their new values
+		if ( isArrayLike( elems ) ) {
+			length = elems.length;
+			for ( ; i < length; i++ ) {
+				value = callback( elems[ i ], i, arg );
+
+				if ( value != null ) {
+					ret.push( value );
+				}
+			}
+
+		// Go through every key on the object,
+		} else {
+			for ( i in elems ) {
+				value = callback( elems[ i ], i, arg );
+
+				if ( value != null ) {
+					ret.push( value );
+				}
+			}
+		}
+
+		// Flatten any nested arrays
+		return concat.apply( [], ret );
+	},
+
+	// A global GUID counter for objects
+	guid: 1,
+
+	// Bind a function to a context, optionally partially applying any
+	// arguments.
+	proxy: function( fn, context ) {
+		var tmp, args, proxy;
+
+		if ( typeof context === "string" ) {
+			tmp = fn[ context ];
+			context = fn;
+			fn = tmp;
+		}
+
+		// Quick check to determine if target is callable, in the spec
+		// this throws a TypeError, but we will just return undefined.
+		if ( !jQuery.isFunction( fn ) ) {
+			return undefined;
+		}
+
+		// Simulated bind
+		args = slice.call( arguments, 2 );
+		proxy = function() {
+			return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
+		};
+
+		// Set the guid of unique handler to the same of original handler, so it can be removed
+		proxy.guid = fn.guid = fn.guid || jQuery.guid++;
+
+		return proxy;
+	},
+
+	now: Date.now,
+
+	// jQuery.support is not used in Core but other projects attach their
+	// properties to it so it needs to exist.
+	support: support
+} );
+
+if ( typeof Symbol === "function" ) {
+	jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ];
+}
+
+// Populate the class2type map
+jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ),
+function( i, name ) {
+	class2type[ "[object " + name + "]" ] = name.toLowerCase();
+} );
+
+function isArrayLike( obj ) {
+
+	// Support: real iOS 8.2 only (not reproducible in simulator)
+	// `in` check used to prevent JIT error (gh-2145)
+	// hasOwn isn't used here due to false negatives
+	// regarding Nodelist length in IE
+	var length = !!obj && "length" in obj && obj.length,
+		type = jQuery.type( obj );
+
+	if ( type === "function" || jQuery.isWindow( obj ) ) {
+		return false;
+	}
+
+	return type === "array" || length === 0 ||
+		typeof length === "number" && length > 0 && ( length - 1 ) in obj;
+}
+var Sizzle =
+/*!
+ * Sizzle CSS Selector Engine v2.3.3
+ * https://sizzlejs.com/
+ *
+ * Copyright jQuery Foundation and other contributors
+ * Released under the MIT license
+ * http://jquery.org/license
+ *
+ * Date: 2016-08-08
+ */
+(function( window ) {
+
+var i,
+	support,
+	Expr,
+	getText,
+	isXML,
+	tokenize,
+	compile,
+	select,
+	outermostContext,
+	sortInput,
+	hasDuplicate,
+
+	// Local document vars
+	setDocument,
+	document,
+	docElem,
+	documentIsHTML,
+	rbuggyQSA,
+	rbuggyMatches,
+	matches,
+	contains,
+
+	// Instance-specific data
+	expando = "sizzle" + 1 * new Date(),
+	preferredDoc = window.document,
+	dirruns = 0,
+	done = 0,
+	classCache = createCache(),
+	tokenCache = createCache(),
+	compilerCache = createCache(),
+	sortOrder = function( a, b ) {
+		if ( a === b ) {
+			hasDuplicate = true;
+		}
+		return 0;
+	},
+
+	// Instance methods
+	hasOwn = ({}).hasOwnProperty,
+	arr = [],
+	pop = arr.pop,
+	push_native = arr.push,
+	push = arr.push,
+	slice = arr.slice,
+	// Use a stripped-down indexOf as it's faster than native
+	// https://jsperf.com/thor-indexof-vs-for/5
+	indexOf = function( list, elem ) {
+		var i = 0,
+			len = list.length;
+		for ( ; i < len; i++ ) {
+			if ( list[i] === elem ) {
+				return i;
+			}
+		}
+		return -1;
+	},
+
+	booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",
+
+	// Regular expressions
+
+	// http://www.w3.org/TR/css3-selectors/#whitespace
+	whitespace = "[\\x20\\t\\r\\n\\f]",
+
+	// http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
+	identifier = "(?:\\\\.|[\\w-]|[^\0-\\xa0])+",
+
+	// Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
+	attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
+		// Operator (capture 2)
+		"*([*^$|!~]?=)" + whitespace +
+		// "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
+		"*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace +
+		"*\\]",
+
+	pseudos = ":(" + identifier + ")(?:\\((" +
+		// To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
+		// 1. quoted (capture 3; capture 4 or capture 5)
+		"('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
+		// 2. simple (capture 6)
+		"((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
+		// 3. anything else (capture 2)
+		".*" +
+		")\\)|)",
+
+	// Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
+	rwhitespace = new RegExp( whitespace + "+", "g" ),
+	rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ),
+
+	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
+	rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ),
+
+	rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ),
+
+	rpseudo = new RegExp( pseudos ),
+	ridentifier = new RegExp( "^" + identifier + "$" ),
+
+	matchExpr = {
+		"ID": new RegExp( "^#(" + identifier + ")" ),
+		"CLASS": new RegExp( "^\\.(" + identifier + ")" ),
+		"TAG": new RegExp( "^(" + identifier + "|[*])" ),
+		"ATTR": new RegExp( "^" + attributes ),
+		"PSEUDO": new RegExp( "^" + pseudos ),
+		"CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
+			"*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
+			"*(\\d+)|))" + whitespace + "*\\)|)", "i" ),
+		"bool": new RegExp( "^(?:" + booleans + ")$", "i" ),
+		// For use in libraries implementing .is()
+		// We use this for POS matching in `select`
+		"needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
+			whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
+	},
+
+	rinputs = /^(?:input|select|textarea|button)$/i,
+	rheader = /^h\d$/i,
+
+	rnative = /^[^{]+\{\s*\[native \w/,
+
+	// Easily-parseable/retrievable ID or TAG or CLASS selectors
+	rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,
+
+	rsibling = /[+~]/,
+
+	// CSS escapes
+	// http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
+	runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ),
+	funescape = function( _, escaped, escapedWhitespace ) {
+		var high = "0x" + escaped - 0x10000;
+		// NaN means non-codepoint
+		// Support: Firefox<24
+		// Workaround erroneous numeric interpretation of +"0x"
+		return high !== high || escapedWhitespace ?
+			escaped :
+			high < 0 ?
+				// BMP codepoint
+				String.fromCharCode( high + 0x10000 ) :
+				// Supplemental Plane codepoint (surrogate pair)
+				String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 );
+	},
+
+	// CSS string/identifier serialization
+	// https://drafts.csswg.org/cssom/#common-serializing-idioms
+	rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g,
+	fcssescape = function( ch, asCodePoint ) {
+		if ( asCodePoint ) {
+
+			// U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
+			if ( ch === "\0" ) {
+				return "\uFFFD";
+			}
+
+			// Control characters and (dependent upon position) numbers get escaped as code points
+			return ch.slice( 0, -1 ) + "\\" + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " ";
+		}
+
+		// Other potentially-special ASCII characters get backslash-escaped
+		return "\\" + ch;
+	},
+
+	// Used for iframes
+	// See setDocument()
+	// Removing the function wrapper causes a "Permission Denied"
+	// error in IE
+	unloadHandler = function() {
+		setDocument();
+	},
+
+	disabledAncestor = addCombinator(
+		function( elem ) {
+			return elem.disabled === true && ("form" in elem || "label" in elem);
+		},
+		{ dir: "parentNode", next: "legend" }
+	);
+
+// Optimize for push.apply( _, NodeList )
+try {
+	push.apply(
+		(arr = slice.call( preferredDoc.childNodes )),
+		preferredDoc.childNodes
+	);
+	// Support: Android<4.0
+	// Detect silently failing push.apply
+	arr[ preferredDoc.childNodes.length ].nodeType;
+} catch ( e ) {
+	push = { apply: arr.length ?
+
+		// Leverage slice if possible
+		function( target, els ) {
+			push_native.apply( target, slice.call(els) );
+		} :
+
+		// Support: IE<9
+		// Otherwise append directly
+		function( target, els ) {
+			var j = target.length,
+				i = 0;
+			// Can't trust NodeList.length
+			while ( (target[j++] = els[i++]) ) {}
+			target.length = j - 1;
+		}
+	};
+}
+
+function Sizzle( selector, context, results, seed ) {
+	var m, i, elem, nid, match, groups, newSelector,
+		newContext = context && context.ownerDocument,
+
+		// nodeType defaults to 9, since context defaults to document
+		nodeType = context ? context.nodeType : 9;
+
+	results = results || [];
+
+	// Return early from calls with invalid selector or context
+	if ( typeof selector !== "string" || !selector ||
+		nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) {
+
+		return results;
+	}
+
+	// Try to shortcut find operations (as opposed to filters) in HTML documents
+	if ( !seed ) {
+
+		if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) {
+			setDocument( context );
+		}
+		context = context || document;
+
+		if ( documentIsHTML ) {
+
+			// If the selector is sufficiently simple, try using a "get*By*" DOM method
+			// (excepting DocumentFragment context, where the methods don't exist)
+			if ( nodeType !== 11 && (match = rquickExpr.exec( selector )) ) {
+
+				// ID selector
+				if ( (m = match[1]) ) {
+
+					// Document context
+					if ( nodeType === 9 ) {
+						if ( (elem = context.getElementById( m )) ) {
+
+							// Support: IE, Opera, Webkit
+							// TODO: identify versions
+							// getElementById can match elements by name instead of ID
+							if ( elem.id === m ) {
+								results.push( elem );
+								return results;
+							}
+						} else {
+							return results;
+						}
+
+					// Element context
+					} else {
+
+						// Support: IE, Opera, Webkit
+						// TODO: identify versions
+						// getElementById can match elements by name instead of ID
+						if ( newContext && (elem = newContext.getElementById( m )) &&
+							contains( context, elem ) &&
+							elem.id === m ) {
+
+							results.push( elem );
+							return results;
+						}
+					}
+
+				// Type selector
+				} else if ( match[2] ) {
+					push.apply( results, context.getElementsByTagName( selector ) );
+					return results;
+
+				// Class selector
+				} else if ( (m = match[3]) && support.getElementsByClassName &&
+					context.getElementsByClassName ) {
+
+					push.apply( results, context.getElementsByClassName( m ) );
+					return results;
+				}
+			}
+
+			// Take advantage of querySelectorAll
+			if ( support.qsa &&
+				!compilerCache[ selector + " " ] &&
+				(!rbuggyQSA || !rbuggyQSA.test( selector )) ) {
+
+				if ( nodeType !== 1 ) {
+					newContext = context;
+					newSelector = selector;
+
+				// qSA looks outside Element context, which is not what we want
+				// Thanks to Andrew Dupont for this workaround technique
+				// Support: IE <=8
+				// Exclude object elements
+				} else if ( context.nodeName.toLowerCase() !== "object" ) {
+
+					// Capture the context ID, setting it first if necessary
+					if ( (nid = context.getAttribute( "id" )) ) {
+						nid = nid.replace( rcssescape, fcssescape );
+					} else {
+						context.setAttribute( "id", (nid = expando) );
+					}
+
+					// Prefix every selector in the list
+					groups = tokenize( selector );
+					i = groups.length;
+					while ( i-- ) {
+						groups[i] = "#" + nid + " " + toSelector( groups[i] );
+					}
+					newSelector = groups.join( "," );
+
+					// Expand context for sibling selectors
+					newContext = rsibling.test( selector ) && testContext( context.parentNode ) ||
+						context;
+				}
+
+				if ( newSelector ) {
+					try {
+						push.apply( results,
+							newContext.querySelectorAll( newSelector )
+						);
+						return results;
+					} catch ( qsaError ) {
+					} finally {
+						if ( nid === expando ) {
+							context.removeAttribute( "id" );
+						}
+					}
+				}
+			}
+		}
+	}
+
+	// All others
+	return select( selector.replace( rtrim, "$1" ), context, results, seed );
+}
+
+/**
+ * Create key-value caches of limited size
+ * @returns {function(string, object)} Returns the Object data after storing it on itself with
+ *	property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
+ *	deleting the oldest entry
+ */
+function createCache() {
+	var keys = [];
+
+	function cache( key, value ) {
+		// Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
+		if ( keys.push( key + " " ) > Expr.cacheLength ) {
+			// Only keep the most recent entries
+			delete cache[ keys.shift() ];
+		}
+		return (cache[ key + " " ] = value);
+	}
+	return cache;
+}
+
+/**
+ * Mark a function for special use by Sizzle
+ * @param {Function} fn The function to mark
+ */
+function markFunction( fn ) {
+	fn[ expando ] = true;
+	return fn;
+}
+
+/**
+ * Support testing using an element
+ * @param {Function} fn Passed the created element and returns a boolean result
+ */
+function assert( fn ) {
+	var el = document.createElement("fieldset");
+
+	try {
+		return !!fn( el );
+	} catch (e) {
+		return false;
+	} finally {
+		// Remove from its parent by default
+		if ( el.parentNode ) {
+			el.parentNode.removeChild( el );
+		}
+		// release memory in IE
+		el = null;
+	}
+}
+
+/**
+ * Adds the same handler for all of the specified attrs
+ * @param {String} attrs Pipe-separated list of attributes
+ * @param {Function} handler The method that will be applied
+ */
+function addHandle( attrs, handler ) {
+	var arr = attrs.split("|"),
+		i = arr.length;
+
+	while ( i-- ) {
+		Expr.attrHandle[ arr[i] ] = handler;
+	}
+}
+
+/**
+ * Checks document order of two siblings
+ * @param {Element} a
+ * @param {Element} b
+ * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
+ */
+function siblingCheck( a, b ) {
+	var cur = b && a,
+		diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
+			a.sourceIndex - b.sourceIndex;
+
+	// Use IE sourceIndex if available on both nodes
+	if ( diff ) {
+		return diff;
+	}
+
+	// Check if b follows a
+	if ( cur ) {
+		while ( (cur = cur.nextSibling) ) {
+			if ( cur === b ) {
+				return -1;
+			}
+		}
+	}
+
+	return a ? 1 : -1;
+}
+
+/**
+ * Returns a function to use in pseudos for input types
+ * @param {String} type
+ */
+function createInputPseudo( type ) {
+	return function( elem ) {
+		var name = elem.nodeName.toLowerCase();
+		return name === "input" && elem.type === type;
+	};
+}
+
+/**
+ * Returns a function to use in pseudos for buttons
+ * @param {String} type
+ */
+function createButtonPseudo( type ) {
+	return function( elem ) {
+		var name = elem.nodeName.toLowerCase();
+		return (name === "input" || name === "button") && elem.type === type;
+	};
+}
+
+/**
+ * Returns a function to use in pseudos for :enabled/:disabled
+ * @param {Boolean} disabled true for :disabled; false for :enabled
+ */
+function createDisabledPseudo( disabled ) {
+
+	// Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable
+	return function( elem ) {
+
+		// Only certain elements can match :enabled or :disabled
+		// https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled
+		// https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled
+		if ( "form" in elem ) {
+
+			// Check for inherited disabledness on relevant non-disabled elements:
+			// * listed form-associated elements in a disabled fieldset
+			//   https://html.spec.whatwg.org/multipage/forms.html#category-listed
+			//   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled
+			// * option elements in a disabled optgroup
+			//   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled
+			// All such elements have a "form" property.
+			if ( elem.parentNode && elem.disabled === false ) {
+
+				// Option elements defer to a parent optgroup if present
+				if ( "label" in elem ) {
+					if ( "label" in elem.parentNode ) {
+						return elem.parentNode.disabled === disabled;
+					} else {
+						return elem.disabled === disabled;
+					}
+				}
+
+				// Support: IE 6 - 11
+				// Use the isDisabled shortcut property to check for disabled fieldset ancestors
+				return elem.isDisabled === disabled ||
+
+					// Where there is no isDisabled, check manually
+					/* jshint -W018 */
+					elem.isDisabled !== !disabled &&
+						disabledAncestor( elem ) === disabled;
+			}
+
+			return elem.disabled === disabled;
+
+		// Try to winnow out elements that can't be disabled before trusting the disabled property.
+		// Some victims get caught in our net (label, legend, menu, track), but it shouldn't
+		// even exist on them, let alone have a boolean value.
+		} else if ( "label" in elem ) {
+			return elem.disabled === disabled;
+		}
+
+		// Remaining elements are neither :enabled nor :disabled
+		return false;
+	};
+}
+
+/**
+ * Returns a function to use in pseudos for positionals
+ * @param {Function} fn
+ */
+function createPositionalPseudo( fn ) {
+	return markFunction(function( argument ) {
+		argument = +argument;
+		return markFunction(function( seed, matches ) {
+			var j,
+				matchIndexes = fn( [], seed.length, argument ),
+				i = matchIndexes.length;
+
+			// Match elements found at the specified indexes
+			while ( i-- ) {
+				if ( seed[ (j = matchIndexes[i]) ] ) {
+					seed[j] = !(matches[j] = seed[j]);
+				}
+			}
+		});
+	});
+}
+
+/**
+ * Checks a node for validity as a Sizzle context
+ * @param {Element|Object=} context
+ * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
+ */
+function testContext( context ) {
+	return context && typeof context.getElementsByTagName !== "undefined" && context;
+}
+
+// Expose support vars for convenience
+support = Sizzle.support = {};
+
+/**
+ * Detects XML nodes
+ * @param {Element|Object} elem An element or a document
+ * @returns {Boolean} True iff elem is a non-HTML XML node
+ */
+isXML = Sizzle.isXML = function( elem ) {
+	// documentElement is verified for cases where it doesn't yet exist
+	// (such as loading iframes in IE - #4833)
+	var documentElement = elem && (elem.ownerDocument || elem).documentElement;
+	return documentElement ? documentElement.nodeName !== "HTML" : false;
+};
+
+/**
+ * Sets document-related variables once based on the current document
+ * @param {Element|Object} [doc] An element or document object to use to set the document
+ * @returns {Object} Returns the current document
+ */
+setDocument = Sizzle.setDocument = function( node ) {
+	var hasCompare, subWindow,
+		doc = node ? node.ownerDocument || node : preferredDoc;
+
+	// Return early if doc is invalid or already selected
+	if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) {
+		return document;
+	}
+
+	// Update global variables
+	document = doc;
+	docElem = document.documentElement;
+	documentIsHTML = !isXML( document );
+
+	// Support: IE 9-11, Edge
+	// Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
+	if ( preferredDoc !== document &&
+		(subWindow = document.defaultView) && subWindow.top !== subWindow ) {
+
+		// Support: IE 11, Edge
+		if ( subWindow.addEventListener ) {
+			subWindow.addEventListener( "unload", unloadHandler, false );
+
+		// Support: IE 9 - 10 only
+		} else if ( subWindow.attachEvent ) {
+			subWindow.attachEvent( "onunload", unloadHandler );
+		}
+	}
+
+	/* Attributes
+	---------------------------------------------------------------------- */
+
+	// Support: IE<8
+	// Verify that getAttribute really returns attributes and not properties
+	// (excepting IE8 booleans)
+	support.attributes = assert(function( el ) {
+		el.className = "i";
+		return !el.getAttribute("className");
+	});
+
+	/* getElement(s)By*
+	---------------------------------------------------------------------- */
+
+	// Check if getElementsByTagName("*") returns only elements
+	support.getElementsByTagName = assert(function( el ) {
+		el.appendChild( document.createComment("") );
+		return !el.getElementsByTagName("*").length;
+	});
+
+	// Support: IE<9
+	support.getElementsByClassName = rnative.test( document.getElementsByClassName );
+
+	// Support: IE<10
+	// Check if getElementById returns elements by name
+	// The broken getElementById methods don't pick up programmatically-set names,
+	// so use a roundabout getElementsByName test
+	support.getById = assert(function( el ) {
+		docElem.appendChild( el ).id = expando;
+		return !document.getElementsByName || !document.getElementsByName( expando ).length;
+	});
+
+	// ID filter and find
+	if ( support.getById ) {
+		Expr.filter["ID"] = function( id ) {
+			var attrId = id.replace( runescape, funescape );
+			return function( elem ) {
+				return elem.getAttribute("id") === attrId;
+			};
+		};
+		Expr.find["ID"] = function( id, context ) {
+			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
+				var elem = context.getElementById( id );
+				return elem ? [ elem ] : [];
+			}
+		};
+	} else {
+		Expr.filter["ID"] =  function( id ) {
+			var attrId = id.replace( runescape, funescape );
+			return function( elem ) {
+				var node = typeof elem.getAttributeNode !== "undefined" &&
+					elem.getAttributeNode("id");
+				return node && node.value === attrId;
+			};
+		};
+
+		// Support: IE 6 - 7 only
+		// getElementById is not reliable as a find shortcut
+		Expr.find["ID"] = function( id, context ) {
+			if ( typeof context.getElementById !== "undefined" && documentIsHTML ) {
+				var node, i, elems,
+					elem = context.getElementById( id );
+
+				if ( elem ) {
+
+					// Verify the id attribute
+					node = elem.getAttributeNode("id");
+					if ( node && node.value === id ) {
+						return [ elem ];
+					}
+
+					// Fall back on getElementsByName
+					elems = context.getElementsByName( id );
+					i = 0;
+					while ( (elem = elems[i++]) ) {
+						node = elem.getAttributeNode("id");
+						if ( node && node.value === id ) {
+							return [ elem ];
+						}
+					}
+				}
+
+				return [];
+			}
+		};
+	}
+
+	// Tag
+	Expr.find["TAG"] = support.getElementsByTagName ?
+		function( tag, context ) {
+			if ( typeof context.getElementsByTagName !== "undefined" ) {
+				return context.getElementsByTagName( tag );
+
+			// DocumentFragment nodes don't have gEBTN
+			} else if ( support.qsa ) {
+				return context.querySelectorAll( tag );
+			}
+		} :
+
+		function( tag, context ) {
+			var elem,
+				tmp = [],
+				i = 0,
+				// By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too
+				results = context.getElementsByTagName( tag );
+
+			// Filter out possible comments
+			if ( tag === "*" ) {
+				while ( (elem = results[i++]) ) {
+					if ( elem.nodeType === 1 ) {
+						tmp.push( elem );
+					}
+				}
+
+				return tmp;
+			}
+			return results;
+		};
+
+	// Class
+	Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) {
+		if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) {
+			return context.getElementsByClassName( className );
+		}
+	};
+
+	/* QSA/matchesSelector
+	---------------------------------------------------------------------- */
+
+	// QSA and matchesSelector support
+
+	// matchesSelector(:active) reports false when true (IE9/Opera 11.5)
+	rbuggyMatches = [];
+
+	// qSa(:focus) reports false when true (Chrome 21)
+	// We allow this because of a bug in IE8/9 that throws an error
+	// whenever `document.activeElement` is accessed on an iframe
+	// So, we allow :focus to pass through QSA all the time to avoid the IE error
+	// See https://bugs.jquery.com/ticket/13378
+	rbuggyQSA = [];
+
+	if ( (support.qsa = rnative.test( document.querySelectorAll )) ) {
+		// Build QSA regex
+		// Regex strategy adopted from Diego Perini
+		assert(function( el ) {
+			// Select is set to empty string on purpose
+			// This is to test IE's treatment of not explicitly
+			// setting a boolean content attribute,
+			// since its presence should be enough
+			// https://bugs.jquery.com/ticket/12359
+			docElem.appendChild( el ).innerHTML = "<a id='" + expando + "'></a>" +
+				"<select id='" + expando + "-\r\\' msallowcapture=''>" +
+				"<option selected=''></option></select>";
+
+			// Support: IE8, Opera 11-12.16
+			// Nothing should be selected when empty strings follow ^= or $= or *=
+			// The test attribute must be unknown in Opera but "safe" for WinRT
+			// https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section
+			if ( el.querySelectorAll("[msallowcapture^='']").length ) {
+				rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" );
+			}
+
+			// Support: IE8
+			// Boolean attributes and "value" are not treated correctly
+			if ( !el.querySelectorAll("[selected]").length ) {
+				rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" );
+			}
+
+			// Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+
+			if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) {
+				rbuggyQSA.push("~=");
+			}
+
+			// Webkit/Opera - :checked should return selected option elements
+			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+			// IE8 throws error here and will not see later tests
+			if ( !el.querySelectorAll(":checked").length ) {
+				rbuggyQSA.push(":checked");
+			}
+
+			// Support: Safari 8+, iOS 8+
+			// https://bugs.webkit.org/show_bug.cgi?id=136851
+			// In-page `selector#id sibling-combinator selector` fails
+			if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) {
+				rbuggyQSA.push(".#.+[+~]");
+			}
+		});
+
+		assert(function( el ) {
+			el.innerHTML = "<a href='' disabled='disabled'></a>" +
+				"<select disabled='disabled'><option/></select>";
+
+			// Support: Windows 8 Native Apps
+			// The type and name attributes are restricted during .innerHTML assignment
+			var input = document.createElement("input");
+			input.setAttribute( "type", "hidden" );
+			el.appendChild( input ).setAttribute( "name", "D" );
+
+			// Support: IE8
+			// Enforce case-sensitivity of name attribute
+			if ( el.querySelectorAll("[name=d]").length ) {
+				rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" );
+			}
+
+			// FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
+			// IE8 throws error here and will not see later tests
+			if ( el.querySelectorAll(":enabled").length !== 2 ) {
+				rbuggyQSA.push( ":enabled", ":disabled" );
+			}
+
+			// Support: IE9-11+
+			// IE's :disabled selector does not pick up the children of disabled fieldsets
+			docElem.appendChild( el ).disabled = true;
+			if ( el.querySelectorAll(":disabled").length !== 2 ) {
+				rbuggyQSA.push( ":enabled", ":disabled" );
+			}
+
+			// Opera 10-11 does not throw on post-comma invalid pseudos
+			el.querySelectorAll("*,:x");
+			rbuggyQSA.push(",.*:");
+		});
+	}
+
+	if ( (support.matchesSelector = rnative.test( (matches = docElem.matches ||
+		docElem.webkitMatchesSelector ||
+		docElem.mozMatchesSelector ||
+		docElem.oMatchesSelector ||
+		docElem.msMatchesSelector) )) ) {
+
+		assert(function( el ) {
+			// Check to see if it's possible to do matchesSelector
+			// on a disconnected node (IE 9)
+			support.disconnectedMatch = matches.call( el, "*" );
+
+			// This should fail with an exception
+			// Gecko does not error, returns false instead
+			matches.call( el, "[s!='']:x" );
+			rbuggyMatches.push( "!=", pseudos );
+		});
+	}
+
+	rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") );
+	rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") );
+
+	/* Contains
+	---------------------------------------------------------------------- */
+	hasCompare = rnative.test( docElem.compareDocumentPosition );
+
+	// Element contains another
+	// Purposefully self-exclusive
+	// As in, an element does not contain itself
+	contains = hasCompare || rnative.test( docElem.contains ) ?
+		function( a, b ) {
+			var adown = a.nodeType === 9 ? a.documentElement : a,
+				bup = b && b.parentNode;
+			return a === bup || !!( bup && bup.nodeType === 1 && (
+				adown.contains ?
+					adown.contains( bup ) :
+					a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16
+			));
+		} :
+		function( a, b ) {
+			if ( b ) {
+				while ( (b = b.parentNode) ) {
+					if ( b === a ) {
+						return true;
+					}
+				}
+			}
+			return false;
+		};
+
+	/* Sorting
+	---------------------------------------------------------------------- */
+
+	// Document order sorting
+	sortOrder = hasCompare ?
+	function( a, b ) {
+
+		// Flag for duplicate removal
+		if ( a === b ) {
+			hasDuplicate = true;
+			return 0;
+		}
+
+		// Sort on method existence if only one input has compareDocumentPosition
+		var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
+		if ( compare ) {
+			return compare;
+		}
+
+		// Calculate position if both inputs belong to the same document
+		compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ?
+			a.compareDocumentPosition( b ) :
+
+			// Otherwise we know they are disconnected
+			1;
+
+		// Disconnected nodes
+		if ( compare & 1 ||
+			(!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) {
+
+			// Choose the first element that is related to our preferred document
+			if ( a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) {
+				return -1;
+			}
+			if ( b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) {
+				return 1;
+			}
+
+			// Maintain original order
+			return sortInput ?
+				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
+				0;
+		}
+
+		return compare & 4 ? -1 : 1;
+	} :
+	function( a, b ) {
+		// Exit early if the nodes are identical
+		if ( a === b ) {
+			hasDuplicate = true;
+			return 0;
+		}
+
+		var cur,
+			i = 0,
+			aup = a.parentNode,
+			bup = b.parentNode,
+			ap = [ a ],
+			bp = [ b ];
+
+		// Parentless nodes are either documents or disconnected
+		if ( !aup || !bup ) {
+			return a === document ? -1 :
+				b === document ? 1 :
+				aup ? -1 :
+				bup ? 1 :
+				sortInput ?
+				( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) :
+				0;
+
+		// If the nodes are siblings, we can do a quick check
+		} else if ( aup === bup ) {
+			return siblingCheck( a, b );
+		}
+
+		// Otherwise we need full lists of their ancestors for comparison
+		cur = a;
+		while ( (cur = cur.parentNode) ) {
+			ap.unshift( cur );
+		}
+		cur = b;
+		while ( (cur = cur.parentNode) ) {
+			bp.unshift( cur );
+		}
+
+		// Walk down the tree looking for a discrepancy
+		while ( ap[i] === bp[i] ) {
+			i++;
+		}
+
+		return i ?
+			// Do a sibling check if the nodes have a common ancestor
+			siblingCheck( ap[i], bp[i] ) :
+
+			// Otherwise nodes in our document sort first
+			ap[i] === preferredDoc ? -1 :
+			bp[i] === preferredDoc ? 1 :
+			0;
+	};
+
+	return document;
+};
+
+Sizzle.matches = function( expr, elements ) {
+	return Sizzle( expr, null, null, elements );
+};
+
+Sizzle.matchesSelector = function( elem, expr ) {
+	// Set document vars if needed
+	if ( ( elem.ownerDocument || elem ) !== document ) {
+		setDocument( elem );
+	}
+
+	// Make sure that attribute selectors are quoted
+	expr = expr.replace( rattributeQuotes, "='$1']" );
+
+	if ( support.matchesSelector && documentIsHTML &&
+		!compilerCache[ expr + " " ] &&
+		( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
+		( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {
+
+		try {
+			var ret = matches.call( elem, expr );
+
+			// IE 9's matchesSelector returns false on disconnected nodes
+			if ( ret || support.disconnectedMatch ||
+					// As well, disconnected nodes are said to be in a document
+					// fragment in IE 9
+					elem.document && elem.document.nodeType !== 11 ) {
+				return ret;
+			}
+		} catch (e) {}
+	}
+
+	return Sizzle( expr, document, null, [ elem ] ).length > 0;
+};
+
+Sizzle.contains = function( context, elem ) {
+	// Set document vars if needed
+	if ( ( context.ownerDocument || context ) !== document ) {
+		setDocument( context );
+	}
+	return contains( context, elem );
+};
+
+Sizzle.attr = function( elem, name ) {
+	// Set document vars if needed
+	if ( ( elem.ownerDocument || elem ) !== document ) {
+		setDocument( elem );
+	}
+
+	var fn = Expr.attrHandle[ name.toLowerCase() ],
+		// Don't get fooled by Object.prototype properties (jQuery #13807)
+		val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ?
+			fn( elem, name, !documentIsHTML ) :
+			undefined;
+
+	return val !== undefined ?
+		val :
+		support.attributes || !documentIsHTML ?
+			elem.getAttribute( name ) :
+			(val = elem.getAttributeNode(name)) && val.specified ?
+				val.value :
+				null;
+};
+
+Sizzle.escape = function( sel ) {
+	return (sel + "").replace( rcssescape, fcssescape );
+};
+
+Sizzle.error = function( msg ) {
+	throw new Error( "Syntax error, unrecognized expression: " + msg );
+};
+
+/**
+ * Document sorting and removing duplicates
+ * @param {ArrayLike} results
+ */
+Sizzle.uniqueSort = function( results ) {
+	var elem,
+		duplicates = [],
+		j = 0,
+		i = 0;
+
+	// Unless we *know* we can detect duplicates, assume their presence
+	hasDuplicate = !support.detectDuplicates;
+	sortInput = !support.sortStable && results.slice( 0 );
+	results.sort( sortOrder );
+
+	if ( hasDuplicate ) {
+		while ( (elem = results[i++]) ) {
+			if ( elem === results[ i ] ) {
+				j = duplicates.push( i );
+			}
+		}
+		while ( j-- ) {
+			results.splice( duplicates[ j ], 1 );
+		}
+	}
+
+	// Clear input after sorting to release objects
+	// See https://github.com/jquery/sizzle/pull/225
+	sortInput = null;
+
+	return results;
+};
+
+/**
+ * Utility function for retrieving the text value of an array of DOM nodes
+ * @param {Array|Element} elem
+ */
+getText = Sizzle.getText = function( elem ) {
+	var node,
+		ret = "",
+		i = 0,
+		nodeType = elem.nodeType;
+
+	if ( !nodeType ) {
+		// If no nodeType, this is expected to be an array
+		while ( (node = elem[i++]) ) {
+			// Do not traverse comment nodes
+			ret += getText( node );
+		}
+	} else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) {
+		// Use textContent for elements
+		// innerText usage removed for consistency of new lines (jQuery #11153)
+		if ( typeof elem.textContent === "string" ) {
+			return elem.textContent;
+		} else {
+			// Traverse its children
+			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
+				ret += getText( elem );
+			}
+		}
+	} else if ( nodeType === 3 || nodeType === 4 ) {
+		return elem.nodeValue;
+	}
+	// Do not include comment or processing instruction nodes
+
+	return ret;
+};
+
+Expr = Sizzle.selectors = {
+
+	// Can be adjusted by the user
+	cacheLength: 50,
+
+	createPseudo: markFunction,
+
+	match: matchExpr,
+
+	attrHandle: {},
+
+	find: {},
+
+	relative: {
+		">": { dir: "parentNode", first: true },
+		" ": { dir: "parentNode" },
+		"+": { dir: "previousSibling", first: true },
+		"~": { dir: "previousSibling" }
+	},
+
+	preFilter: {
+		"ATTR": function( match ) {
+			match[1] = match[1].replace( runescape, funescape );
+
+			// Move the given value to match[3] whether quoted or unquoted
+			match[3] = ( match[3] || match[4] || match[5] || "" ).replace( runescape, funescape );
+
+			if ( match[2] === "~=" ) {
+				match[3] = " " + match[3] + " ";
+			}
+
+			return match.slice( 0, 4 );
+		},
+
+		"CHILD": function( match ) {
+			/* matches from matchExpr["CHILD"]
+				1 type (only|nth|...)
+				2 what (child|of-type)
+				3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
+				4 xn-component of xn+y argument ([+-]?\d*n|)
+				5 sign of xn-component
+				6 x of xn-component
+				7 sign of y-component
+				8 y of y-component
+			*/
+			match[1] = match[1].toLowerCase();
+
+			if ( match[1].slice( 0, 3 ) === "nth" ) {
+				// nth-* requires argument
+				if ( !match[3] ) {
+					Sizzle.error( match[0] );
+				}
+
+				// numeric x and y parameters for Expr.filter.CHILD
+				// remember that false/true cast respectively to 0/1
+				match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) );
+				match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" );
+
+			// other types prohibit arguments
+			} else if ( match[3] ) {
+				Sizzle.error( match[0] );
+			}
+
+			return match;
+		},
+
+		"PSEUDO": function( match ) {
+			var excess,
+				unquoted = !match[6] && match[2];
+
+			if ( matchExpr["CHILD"].test( match[0] ) ) {
+				return null;
+			}
+
+			// Accept quoted arguments as-is
+			if ( match[3] ) {
+				match[2] = match[4] || match[5] || "";
+
+			// Strip excess characters from unquoted arguments
+			} else if ( unquoted && rpseudo.test( unquoted ) &&
+				// Get excess from tokenize (recursively)
+				(excess = tokenize( unquoted, true )) &&
+				// advance to the next closing parenthesis
+				(excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) {
+
+				// excess is a negative index
+				match[0] = match[0].slice( 0, excess );
+				match[2] = unquoted.slice( 0, excess );
+			}
+
+			// Return only captures needed by the pseudo filter method (type and argument)
+			return match.slice( 0, 3 );
+		}
+	},
+
+	filter: {
+
+		"TAG": function( nodeNameSelector ) {
+			var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase();
+			return nodeNameSelector === "*" ?
+				function() { return true; } :
+				function( elem ) {
+					return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
+				};
+		},
+
+		"CLASS": function( className ) {
+			var pattern = classCache[ className + " " ];
+
+			return pattern ||
+				(pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) &&
+				classCache( className, function( elem ) {
+					return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== "undefined" && elem.getAttribute("class") || "" );
+				});
+		},
+
+		"ATTR": function( name, operator, check ) {
+			return function( elem ) {
+				var result = Sizzle.attr( elem, name );
+
+				if ( result == null ) {
+					return operator === "!=";
+				}
+				if ( !operator ) {
+					return true;
+				}
+
+				result += "";
+
+				return operator === "=" ? result === check :
+					operator === "!=" ? result !== check :
+					operator === "^=" ? check && result.indexOf( check ) === 0 :
+					operator === "*=" ? check && result.indexOf( check ) > -1 :
+					operator === "$=" ? check && result.slice( -check.length ) === check :
+					operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 :
+					operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" :
+					false;
+			};
+		},
+
+		"CHILD": function( type, what, argument, first, last ) {
+			var simple = type.slice( 0, 3 ) !== "nth",
+				forward = type.slice( -4 ) !== "last",
+				ofType = what === "of-type";
+
+			return first === 1 && last === 0 ?
+
+				// Shortcut for :nth-*(n)
+				function( elem ) {
+					return !!elem.parentNode;
+				} :
+
+				function( elem, context, xml ) {
+					var cache, uniqueCache, outerCache, node, nodeIndex, start,
+						dir = simple !== forward ? "nextSibling" : "previousSibling",
+						parent = elem.parentNode,
+						name = ofType && elem.nodeName.toLowerCase(),
+						useCache = !xml && !ofType,
+						diff = false;
+
+					if ( parent ) {
+
+						// :(first|last|only)-(child|of-type)
+						if ( simple ) {
+							while ( dir ) {
+								node = elem;
+								while ( (node = node[ dir ]) ) {
+									if ( ofType ?
+										node.nodeName.toLowerCase() === name :
+										node.nodeType === 1 ) {
+
+										return false;
+									}
+								}
+								// Reverse direction for :only-* (if we haven't yet done so)
+								start = dir = type === "only" && !start && "nextSibling";
+							}
+							return true;
+						}
+
+						start = [ forward ? parent.firstChild : parent.lastChild ];
+
+						// non-xml :nth-child(...) stores cache data on `parent`
+						if ( forward && useCache ) {
+
+							// Seek `elem` from a previously-cached index
+
+							// ...in a gzip-friendly way
+							node = parent;
+							outerCache = node[ expando ] || (node[ expando ] = {});
+
+							// Support: IE <9 only
+							// Defend against cloned attroperties (jQuery gh-1709)
+							uniqueCache = outerCache[ node.uniqueID ] ||
+								(outerCache[ node.uniqueID ] = {});
+
+							cache = uniqueCache[ type ] || [];
+							nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
+							diff = nodeIndex && cache[ 2 ];
+							node = nodeIndex && parent.childNodes[ nodeIndex ];
+
+							while ( (node = ++nodeIndex && node && node[ dir ] ||
+
+								// Fallback to seeking `elem` from the start
+								(diff = nodeIndex = 0) || start.pop()) ) {
+
+								// When found, cache indexes on `parent` and break
+								if ( node.nodeType === 1 && ++diff && node === elem ) {
+									uniqueCache[ type ] = [ dirruns, nodeIndex, diff ];
+									break;
+								}
+							}
+
+						} else {
+							// Use previously-cached element index if available
+							if ( useCache ) {
+								// ...in a gzip-friendly way
+								node = elem;
+								outerCache = node[ expando ] || (node[ expando ] = {});
+
+								// Support: IE <9 only
+								// Defend against cloned attroperties (jQuery gh-1709)
+								uniqueCache = outerCache[ node.uniqueID ] ||
+									(outerCache[ node.uniqueID ] = {});
+
+								cache = uniqueCache[ type ] || [];
+								nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ];
+								diff = nodeIndex;
+							}
+
+							// xml :nth-child(...)
+							// or :nth-last-child(...) or :nth(-last)?-of-type(...)
+							if ( diff === false ) {
+								// Use the same loop as above to seek `elem` from the start
+								while ( (node = ++nodeIndex && node && node[ dir ] ||
+									(diff = nodeIndex = 0) || start.pop()) ) {
+
+									if ( ( ofType ?
+										node.nodeName.toLowerCase() === name :
+										node.nodeType === 1 ) &&
+										++diff ) {
+
+										// Cache the index of each encountered element
+										if ( useCache ) {
+											outerCache = node[ expando ] || (node[ expando ] = {});
+
+											// Support: IE <9 only
+											// Defend against cloned attroperties (jQuery gh-1709)
+											uniqueCache = outerCache[ node.uniqueID ] ||
+												(outerCache[ node.uniqueID ] = {});
+
+											uniqueCache[ type ] = [ dirruns, diff ];
+										}
+
+										if ( node === elem ) {
+											break;
+										}
+									}
+								}
+							}
+						}
+
+						// Incorporate the offset, then check against cycle size
+						diff -= last;
+						return diff === first || ( diff % first === 0 && diff / first >= 0 );
+					}
+				};
+		},
+
+		"PSEUDO": function( pseudo, argument ) {
+			// pseudo-class names are case-insensitive
+			// http://www.w3.org/TR/selectors/#pseudo-classes
+			// Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
+			// Remember that setFilters inherits from pseudos
+			var args,
+				fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] ||
+					Sizzle.error( "unsupported pseudo: " + pseudo );
+
+			// The user may use createPseudo to indicate that
+			// arguments are needed to create the filter function
+			// just as Sizzle does
+			if ( fn[ expando ] ) {
+				return fn( argument );
+			}
+
+			// But maintain support for old signatures
+			if ( fn.length > 1 ) {
+				args = [ pseudo, pseudo, "", argument ];
+				return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ?
+					markFunction(function( seed, matches ) {
+						var idx,
+							matched = fn( seed, argument ),
+							i = matched.length;
+						while ( i-- ) {
+							idx = indexOf( seed, matched[i] );
+							seed[ idx ] = !( matches[ idx ] = matched[i] );
+						}
+					}) :
+					function( elem ) {
+						return fn( elem, 0, args );
+					};
+			}
+
+			return fn;
+		}
+	},
+
+	pseudos: {
+		// Potentially complex pseudos
+		"not": markFunction(function( selector ) {
+			// Trim the selector passed to compile
+			// to avoid treating leading and trailing
+			// spaces as combinators
+			var input = [],
+				results = [],
+				matcher = compile( selector.replace( rtrim, "$1" ) );
+
+			return matcher[ expando ] ?
+				markFunction(function( seed, matches, context, xml ) {
+					var elem,
+						unmatched = matcher( seed, null, xml, [] ),
+						i = seed.length;
+
+					// Match elements unmatched by `matcher`
+					while ( i-- ) {
+						if ( (elem = unmatched[i]) ) {
+							seed[i] = !(matches[i] = elem);
+						}
+					}
+				}) :
+				function( elem, context, xml ) {
+					input[0] = elem;
+					matcher( input, null, xml, results );
+					// Don't keep the element (issue #299)
+					input[0] = null;
+					return !results.pop();
+				};
+		}),
+
+		"has": markFunction(function( selector ) {
+			return function( elem ) {
+				return Sizzle( selector, elem ).length > 0;
+			};
+		}),
+
+		"contains": markFunction(function( text ) {
+			text = text.replace( runescape, funescape );
+			return function( elem ) {
+				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
+			};
+		}),
+
+		// "Whether an element is represented by a :lang() selector
+		// is based solely on the element's language value
+		// being equal to the identifier C,
+		// or beginning with the identifier C immediately followed by "-".
+		// The matching of C against the element's language value is performed case-insensitively.
+		// The identifier C does not have to be a valid language name."
+		// http://www.w3.org/TR/selectors/#lang-pseudo
+		"lang": markFunction( function( lang ) {
+			// lang value must be a valid identifier
+			if ( !ridentifier.test(lang || "") ) {
+				Sizzle.error( "unsupported lang: " + lang );
+			}
+			lang = lang.replace( runescape, funescape ).toLowerCase();
+			return function( elem ) {
+				var elemLang;
+				do {
+					if ( (elemLang = documentIsHTML ?
+						elem.lang :
+						elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) {
+
+						elemLang = elemLang.toLowerCase();
+						return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0;
+					}
+				} while ( (elem = elem.parentNode) && elem.nodeType === 1 );
+				return false;
+			};
+		}),
+
+		// Miscellaneous
+		"target": function( elem ) {
+			var hash = window.location && window.location.hash;
+			return hash && hash.slice( 1 ) === elem.id;
+		},
+
+		"root": function( elem ) {
+			return elem === docElem;
+		},
+
+		"focus": function( elem ) {
+			return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
+		},
+
+		// Boolean properties
+		"enabled": createDisabledPseudo( false ),
+		"disabled": createDisabledPseudo( true ),
+
+		"checked": function( elem ) {
+			// In CSS3, :checked should return both checked and selected elements
+			// http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+			var nodeName = elem.nodeName.toLowerCase();
+			return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
+		},
+
+		"selected": function( elem ) {
+			// Accessing this property makes selected-by-default
+			// options in Safari work properly
+			if ( elem.parentNode ) {
+				elem.parentNode.selectedIndex;
+			}
+
+			return elem.selected === true;
+		},
+
+		// Contents
+		"empty": function( elem ) {
+			// http://www.w3.org/TR/selectors/#empty-pseudo
+			// :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
+			//   but not by others (comment: 8; processing instruction: 7; etc.)
+			// nodeType < 6 works because attributes (2) do not appear as children
+			for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) {
+				if ( elem.nodeType < 6 ) {
+					return false;
+				}
+			}
+			return true;
+		},
+
+		"parent": function( elem ) {
+			return !Expr.pseudos["empty"]( elem );
+		},
+
+		// Element/input types
+		"header": function( elem ) {
+			return rheader.test( elem.nodeName );
+		},
+
+		"input": function( elem ) {
+			return rinputs.test( elem.nodeName );
+		},
+
+		"button": function( elem ) {
+			var name = elem.nodeName.toLowerCase();
+			return name === "input" && elem.type === "button" || name === "button";
+		},
+
+		"text": function( elem ) {
+			var attr;
+			return elem.nodeName.toLowerCase() === "input" &&
+				elem.type === "text" &&
+
+				// Support: IE<8
+				// New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
+				( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" );
+		},
+
+		// Position-in-collection
+		"first": createPositionalPseudo(function() {
+			return [ 0 ];
+		}),
+
+		"last": createPositionalPseudo(function( matchIndexes, length ) {
+			return [ length - 1 ];
+		}),
+
+		"eq": createPositionalPseudo(function( matchIndexes, length, argument ) {
+			return [ argument < 0 ? argument + length : argument ];
+		}),
+
+		"even": createPositionalPseudo(function( matchIndexes, length ) {
+			var i = 0;
+			for ( ; i < length; i += 2 ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		}),
+
+		"odd": createPositionalPseudo(function( matchIndexes, length ) {
+			var i = 1;
+			for ( ; i < length; i += 2 ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		}),
+
+		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
+			var i = argument < 0 ? argument + length : argument;
+			for ( ; --i >= 0; ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		}),
+
+		"gt": createPositionalPseudo(function( matchIndexes, length, argument ) {
+			var i = argument < 0 ? argument + length : argument;
+			for ( ; ++i < length; ) {
+				matchIndexes.push( i );
+			}
+			return matchIndexes;
+		})
+	}
+};
+
+Expr.pseudos["nth"] = Expr.pseudos["eq"];
+
+// Add button/input type pseudos
+for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) {
+	Expr.pseudos[ i ] = createInputPseudo( i );
+}
+for ( i in { submit: true, reset: true } ) {
+	Expr.pseudos[ i ] = createButtonPseudo( i );
+}
+
+// Easy API for creating new setFilters
+function setFilters() {}
+setFilters.prototype = Expr.filters = Expr.pseudos;
+Expr.setFilters = new setFilters();
+
+tokenize = Sizzle.tokenize = function( selector, parseOnly ) {
+	var matched, match, tokens, type,
+		soFar, groups, preFilters,
+		cached = tokenCache[ selector + " " ];
+
+	if ( cached ) {
+		return parseOnly ? 0 : cached.slice( 0 );
+	}
+
+	soFar = selector;
+	groups = [];
+	preFilters = Expr.preFilter;
+
+	while ( soFar ) {
+
+		// Comma and first run
+		if ( !matched || (match = rcomma.exec( soFar )) ) {
+			if ( match ) {
+				// Don't consume trailing commas as valid
+				soFar = soFar.slice( match[0].length ) || soFar;
+			}
+			groups.push( (tokens = []) );
+		}
+
+		matched = false;
+
+		// Combinators
+		if ( (match = rcombinators.exec( soFar )) ) {
+			matched = match.shift();
+			tokens.push({
+				value: matched,
+				// Cast descendant combinators to space
+				type: match[0].replace( rtrim, " " )
+			});
+			soFar = soFar.slice( matched.length );
+		}
+
+		// Filters
+		for ( type in Expr.filter ) {
+			if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] ||
+				(match = preFilters[ type ]( match ))) ) {
+				matched = match.shift();
+				tokens.push({
+					value: matched,
+					type: type,
+					matches: match
+				});
+				soFar = soFar.slice( matched.length );
+			}
+		}
+
+		if ( !matched ) {
+			break;
+		}
+	}
+
+	// Return the length of the invalid excess
+	// if we're just parsing
+	// Otherwise, throw an error or return tokens
+	return parseOnly ?
+		soFar.length :
+		soFar ?
+			Sizzle.error( selector ) :
+			// Cache the tokens
+			tokenCache( selector, groups ).slice( 0 );
+};
+
+function toSelector( tokens ) {
+	var i = 0,
+		len = tokens.length,
+		selector = "";
+	for ( ; i < len; i++ ) {
+		selector += tokens[i].value;
+	}
+	return selector;
+}
+
+function addCombinator( matcher, combinator, base ) {
+	var dir = combinator.dir,
+		skip = combinator.next,
+		key = skip || dir,
+		checkNonElements = base && key === "parentNode",
+		doneName = done++;
+
+	return combinator.first ?
+		// Check against closest ancestor/preceding element
+		function( elem, context, xml ) {
+			while ( (elem = elem[ dir ]) ) {
+				if ( elem.nodeType === 1 || checkNonElements ) {
+					return matcher( elem, context, xml );
+				}
+			}
+			return false;
+		} :
+
+		// Check against all ancestor/preceding elements
+		function( elem, context, xml ) {
+			var oldCache, uniqueCache, outerCache,
+				newCache = [ dirruns, doneName ];
+
+			// We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching
+			if ( xml ) {
+				while ( (elem = elem[ dir ]) ) {
+					if ( elem.nodeType === 1 || checkNonElements ) {
+						if ( matcher( elem, context, xml ) ) {
+							return true;
+						}
+					}
+				}
+			} else {
+				while ( (elem = elem[ dir ]) ) {
+					if ( elem.nodeType === 1 || checkNonElements ) {
+						outerCache = elem[ expando ] || (elem[ expando ] = {});
+
+						// Support: IE <9 only
+						// Defend against cloned attroperties (jQuery gh-1709)
+						uniqueCache = outerCache[ elem.uniqueID ] || (outerCache[ elem.uniqueID ] = {});
+
+						if ( skip && skip === elem.nodeName.toLowerCase() ) {
+							elem = elem[ dir ] || elem;
+						} else if ( (oldCache = uniqueCache[ key ]) &&
+							oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) {
+
+							// Assign to newCache so results back-propagate to previous elements
+							return (newCache[ 2 ] = oldCache[ 2 ]);
+						} else {
+							// Reuse newcache so results back-propagate to previous elements
+							uniqueCache[ key ] = newCache;
+
+							// A match means we're done; a fail means we have to keep checking
+							if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) {
+								return true;
+							}
+						}
+					}
+				}
+			}
+			return false;
+		};
+}
+
+function elementMatcher( matchers ) {
+	return matchers.length > 1 ?
+		function( elem, context, xml ) {
+			var i = matchers.length;
+			while ( i-- ) {
+				if ( !matchers[i]( elem, context, xml ) ) {
+					return false;
+				}
+			}
+			return true;
+		} :
+		matchers[0];
+}
+
+function multipleContexts( selector, contexts, results ) {
+	var i = 0,
+		len = contexts.length;
+	for ( ; i < len; i++ ) {
+		Sizzle( selector, contexts[i], results );
+	}
+	return results;
+}
+
+function condense( unmatched, map, filter, context, xml ) {
+	var elem,
+		newUnmatched = [],
+		i = 0,
+		len = unmatched.length,
+		mapped = map != null;
+
+	for ( ; i < len; i++ ) {
+		if ( (elem = unmatched[i]) ) {
+			if ( !filter || filter( elem, context, xml ) ) {
+				newUnmatched.push( elem );
+				if ( mapped ) {
+					map.push( i );
+				}
+			}
+		}
+	}
+
+	return newUnmatched;
+}
+
+function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) {
+	if ( postFilter && !postFilter[ expando ] ) {
+		postFilter = setMatcher( postFilter );
+	}
+	if ( postFinder && !postFinder[ expando ] ) {
+		postFinder = setMatcher( postFinder, postSelector );
+	}
+	return markFunction(function( seed, results, context, xml ) {
+		var temp, i, elem,
+			preMap = [],
+			postMap = [],
+			preexisting = results.length,
+
+			// Get initial elements from seed or context
+			elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ),
+
+			// Prefilter to get matcher input, preserving a map for seed-results synchronization
+			matcherIn = preFilter && ( seed || !selector ) ?
+				condense( elems, preMap, preFilter, context, xml ) :
+				elems,
+
+			matcherOut = matcher ?
+				// If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
+				postFinder || ( seed ? preFilter : preexisting || postFilter ) ?
+
+					// ...intermediate processing is necessary
+					[] :
+
+					// ...otherwise use results directly
+					results :
+				matcherIn;
+
+		// Find primary matches
+		if ( matcher ) {
+			matcher( matcherIn, matcherOut, context, xml );
+		}
+
+		// Apply postFilter
+		if ( postFilter ) {
+			temp = condense( matcherOut, postMap );
+			postFilter( temp, [], context, xml );
+
+			// Un-match failing elements by moving them back to matcherIn
+			i = temp.length;
+			while ( i-- ) {
+				if ( (elem = temp[i]) ) {
+					matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem);
+				}
+			}
+		}
+
+		if ( seed ) {
+			if ( postFinder || preFilter ) {
+				if ( postFinder ) {
+					// Get the final matcherOut by condensing this intermediate into postFinder contexts
+					temp = [];
+					i = matcherOut.length;
+					while ( i-- ) {
+						if ( (elem = matcherOut[i]) ) {
+							// Restore matcherIn since elem is not yet a final match
+							temp.push( (matcherIn[i] = elem) );
+						}
+					}
+					postFinder( null, (matcherOut = []), temp, xml );
+				}
+
+				// Move matched elements from seed to results to keep them synchronized
+				i = matcherOut.length;
+				while ( i-- ) {
+					if ( (elem = matcherOut[i]) &&
+						(temp = postFinder ? indexOf( seed, elem ) : preMap[i]) > -1 ) {
+
+						seed[temp] = !(results[temp] = elem);
+					}
+				}
+			}
+
+		// Add elements to results, through postFinder if defined
+		} else {
+			matcherOut = condense(
+				matcherOut === results ?
+					matcherOut.splice( preexisting, matcherOut.length ) :
+					matcherOut
+			);
+			if ( postFinder ) {
+				postFinder( null, results, matcherOut, xml );
+			} else {
+				push.apply( results, matcherOut );
+			}
+		}
+	});
+}
+
+function matcherFromTokens( tokens ) {
+	var checkContext, matcher, j,
+		len = tokens.length,
+		leadingRelative = Expr.relative[ tokens[0].type ],
+		implicitRelative = leadingRelative || Expr.relative[" "],
+		i = leadingRelative ? 1 : 0,
+
+		// The foundational matcher ensures that elements are reachable from top-level context(s)
+		matchContext = addCombinator( function( elem ) {
+			return elem === checkContext;
+		}, implicitRelative, true ),
+		matchAnyContext = addCombinator( function( elem ) {
+			return indexOf( checkContext, elem ) > -1;
+		}, implicitRelative, true ),
+		matchers = [ function( elem, context, xml ) {
+			var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || (
+				(checkContext = context).nodeType ?
+					matchContext( elem, context, xml ) :
+					matchAnyContext( elem, context, xml ) );
+			// Avoid hanging onto element (issue #299)
+			checkContext = null;
+			return ret;
+		} ];
+
+	for ( ; i < len; i++ ) {
+		if ( (matcher = Expr.relative[ tokens[i].type ]) ) {
+			matchers = [ addCombinator(elementMatcher( matchers ), matcher) ];
+		} else {
+			matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches );
+
+			// Return special upon seeing a positional matcher
+			if ( matcher[ expando ] ) {
+				// Find the next relative operator (if any) for proper handling
+				j = ++i;
+				for ( ; j < len; j++ ) {
+					if ( Expr.relative[ tokens[j].type ] ) {
+						break;
+					}
+				}
+				return setMatcher(
+					i > 1 && elementMatcher( matchers ),
+					i > 1 && toSelector(
+						// If the preceding token was a descendant combinator, insert an implicit any-element `*`
+						tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" })
+					).replace( rtrim, "$1" ),
+					matcher,
+					i < j && matcherFromTokens( tokens.slice( i, j ) ),
+					j < len && matcherFromTokens( (tokens = tokens.slice( j )) ),
+					j < len && toSelector( tokens )
+				);
+			}
+			matchers.push( matcher );
+		}
+	}
+
+	return elementMatcher( matchers );
+}
+
+function matcherFromGroupMatchers( elementMatchers, setMatchers ) {
+	var bySet = setMatchers.length > 0,
+		byElement = elementMatchers.length > 0,
+		superMatcher = function( seed, context, xml, results, outermost ) {
+			var elem, j, matcher,
+				matchedCount = 0,
+				i = "0",
+				unmatched = seed && [],
+				setMatched = [],
+				contextBackup = outermostContext,
+				// We must always have either seed elements or outermost context
+				elems = seed || byElement && Expr.find["TAG"]( "*", outermost ),
+				// Use integer dirruns iff this is the outermost matcher
+				dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),
+				len = elems.length;
+
+			if ( outermost ) {
+				outermostContext = context === document || context || outermost;
+			}
+
+			// Add elements passing elementMatchers directly to results
+			// Support: IE<9, Safari
+			// Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
+			for ( ; i !== len && (elem = elems[i]) != null; i++ ) {
+				if ( byElement && elem ) {
+					j = 0;
+					if ( !context && elem.ownerDocument !== document ) {
+						setDocument( elem );
+						xml = !documentIsHTML;
+					}
+					while ( (matcher = elementMatchers[j++]) ) {
+						if ( matcher( elem, context || document, xml) ) {
+							results.push( elem );
+							break;
+						}
+					}
+					if ( outermost ) {
+						dirruns = dirrunsUnique;
+					}
+				}
+
+				// Track unmatched elements for set filters
+				if ( bySet ) {
+					// They will have gone through all possible matchers
+					if ( (elem = !matcher && elem) ) {
+						matchedCount--;
+					}
+
+					// Lengthen the array for every element, matched or not
+					if ( seed ) {
+						unmatched.push( elem );
+					}
+				}
+			}
+
+			// `i` is now the count of elements visited above, and adding it to `matchedCount`
+			// makes the latter nonnegative.
+			matchedCount += i;
+
+			// Apply set filters to unmatched elements
+			// NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`
+			// equals `i`), unless we didn't visit _any_ elements in the above loop because we have
+			// no element matchers and no seed.
+			// Incrementing an initially-string "0" `i` allows `i` to remain a string only in that
+			// case, which will result in a "00" `matchedCount` that differs from `i` but is also
+			// numerically zero.
+			if ( bySet && i !== matchedCount ) {
+				j = 0;
+				while ( (matcher = setMatchers[j++]) ) {
+					matcher( unmatched, setMatched, context, xml );
+				}
+
+				if ( seed ) {
+					// Reintegrate element matches to eliminate the need for sorting
+					if ( matchedCount > 0 ) {
+						while ( i-- ) {
+							if ( !(unmatched[i] || setMatched[i]) ) {
+								setMatched[i] = pop.call( results );
+							}
+						}
+					}
+
+					// Discard index placeholder values to get only actual matches
+					setMatched = condense( setMatched );
+				}
+
+				// Add matches to results
+				push.apply( results, setMatched );
+
+				// Seedless set matches succeeding multiple successful matchers stipulate sorting
+				if ( outermost && !seed && setMatched.length > 0 &&
+					( matchedCount + setMatchers.length ) > 1 ) {
+
+					Sizzle.uniqueSort( results );
+				}
+			}
+
+			// Override manipulation of globals by nested matchers
+			if ( outermost ) {
+				dirruns = dirrunsUnique;
+				outermostContext = contextBackup;
+			}
+
+			return unmatched;
+		};
+
+	return bySet ?
+		markFunction( superMatcher ) :
+		superMatcher;
+}
+
+compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) {
+	var i,
+		setMatchers = [],
+		elementMatchers = [],
+		cached = compilerCache[ selector + " " ];
+
+	if ( !cached ) {
+		// Generate a function of recursive functions that can be used to check each element
+		if ( !match ) {
+			match = tokenize( selector );
+		}
+		i = match.length;
+		while ( i-- ) {
+			cached = matcherFromTokens( match[i] );
+			if ( cached[ expando ] ) {
+				setMatchers.push( cached );
+			} else {
+				elementMatchers.push( cached );
+			}
+		}
+
+		// Cache the compiled function
+		cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) );
+
+		// Save selector and tokenization
+		cached.selector = selector;
+	}
+	return cached;
+};
+
+/**
+ * A low-level selection function that works with Sizzle's compiled
+ *  selector functions
+ * @param {String|Function} selector A selector or a pre-compiled
+ *  selector function built with Sizzle.compile
+ * @param {Element} context
+ * @param {Array} [results]
+ * @param {Array} [seed] A set of elements to match against
+ */
+select = Sizzle.select = function( selector, context, results, seed ) {
+	var i, tokens, token, type, find,
+		compiled = typeof selector === "function" && selector,
+		match = !seed && tokenize( (selector = compiled.selector || selector) );
+
+	results = results || [];
+
+	// Try to minimize operations if there is only one selector in the list and no seed
+	// (the latter of which guarantees us context)
+	if ( match.length === 1 ) {
+
+		// Reduce context if the leading compound selector is an ID
+		tokens = match[0] = match[0].slice( 0 );
+		if ( tokens.length > 2 && (token = tokens[0]).type === "ID" &&
+				context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[1].type ] ) {
+
+			context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0];
+			if ( !context ) {
+				return results;
+
+			// Precompiled matchers will still verify ancestry, so step up a level
+			} else if ( compiled ) {
+				context = context.parentNode;
+			}
+
+			selector = selector.slice( tokens.shift().value.length );
+		}
+
+		// Fetch a seed set for right-to-left matching
+		i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length;
+		while ( i-- ) {
+			token = tokens[i];
+
+			// Abort if we hit a combinator
+			if ( Expr.relative[ (type = token.type) ] ) {
+				break;
+			}
+			if ( (find = Expr.find[ type ]) ) {
+				// Search, expanding context for leading sibling combinators
+				if ( (seed = find(
+					token.matches[0].replace( runescape, funescape ),
+					rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context
+				)) ) {
+
+					// If seed is empty or no tokens remain, we can return early
+					tokens.splice( i, 1 );
+					selector = seed.length && toSelector( tokens );
+					if ( !selector ) {
+						push.apply( results, seed );
+						return results;
+					}
+
+					break;
+				}
+			}
+		}
+	}
+
+	// Compile and execute a filtering function if one is not provided
+	// Provide `match` to avoid retokenization if we modified the selector above
+	( compiled || compile( selector, match ) )(
+		seed,
+		context,
+		!documentIsHTML,
+		results,
+		!context || rsibling.test( selector ) && testContext( context.parentNode ) || context
+	);
+	return results;
+};
+
+// One-time assignments
+
+// Sort stability
+support.sortStable = expando.split("").sort( sortOrder ).join("") === expando;
+
+// Support: Chrome 14-35+
+// Always assume duplicates if they aren't passed to the comparison function
+support.detectDuplicates = !!hasDuplicate;
+
+// Initialize against the default document
+setDocument();
+
+// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27)
+// Detached nodes confoundingly follow *each other*
+support.sortDetached = assert(function( el ) {
+	// Should return 1, but returns 4 (following)
+	return el.compareDocumentPosition( document.createElement("fieldset") ) & 1;
+});
+
+// Support: IE<8
+// Prevent attribute/property "interpolation"
+// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx
+if ( !assert(function( el ) {
+	el.innerHTML = "<a href='#'></a>";
+	return el.firstChild.getAttribute("href") === "#" ;
+}) ) {
+	addHandle( "type|href|height|width", function( elem, name, isXML ) {
+		if ( !isXML ) {
+			return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 );
+		}
+	});
+}
+
+// Support: IE<9
+// Use defaultValue in place of getAttribute("value")
+if ( !support.attributes || !assert(function( el ) {
+	el.innerHTML = "<input/>";
+	el.firstChild.setAttribute( "value", "" );
+	return el.firstChild.getAttribute( "value" ) === "";
+}) ) {
+	addHandle( "value", function( elem, name, isXML ) {
+		if ( !isXML && elem.nodeName.toLowerCase() === "input" ) {
+			return elem.defaultValue;
+		}
+	});
+}
+
+// Support: IE<9
+// Use getAttributeNode to fetch booleans when getAttribute lies
+if ( !assert(function( el ) {
+	return el.getAttribute("disabled") == null;
+}) ) {
+	addHandle( booleans, function( elem, name, isXML ) {
+		var val;
+		if ( !isXML ) {
+			return elem[ name ] === true ? name.toLowerCase() :
+					(val = elem.getAttributeNode( name )) && val.specified ?
+					val.value :
+				null;
+		}
+	});
+}
+
+return Sizzle;
+
+})( window );
+
+
+
+jQuery.find = Sizzle;
+jQuery.expr = Sizzle.selectors;
+
+// Deprecated
+jQuery.expr[ ":" ] = jQuery.expr.pseudos;
+jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;
+jQuery.text = Sizzle.getText;
+jQuery.isXMLDoc = Sizzle.isXML;
+jQuery.contains = Sizzle.contains;
+jQuery.escapeSelector = Sizzle.escape;
+
+
+
+
+var dir = function( elem, dir, until ) {
+	var matched = [],
+		truncate = until !== undefined;
+
+	while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) {
+		if ( elem.nodeType === 1 ) {
+			if ( truncate && jQuery( elem ).is( until ) ) {
+				break;
+			}
+			matched.push( elem );
+		}
+	}
+	return matched;
+};
+
+
+var siblings = function( n, elem ) {
+	var matched = [];
+
+	for ( ; n; n = n.nextSibling ) {
+		if ( n.nodeType === 1 && n !== elem ) {
+			matched.push( n );
+		}
+	}
+
+	return matched;
+};
+
+
+var rneedsContext = jQuery.expr.match.needsContext;
+
+
+
+function nodeName( elem, name ) {
+
+  return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
+
+};
+var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i );
+
+
+
+var risSimple = /^.[^:#\[\.,]*$/;
+
+// Implement the identical functionality for filter and not
+function winnow( elements, qualifier, not ) {
+	if ( jQuery.isFunction( qualifier ) ) {
+		return jQuery.grep( elements, function( elem, i ) {
+			return !!qualifier.call( elem, i, elem ) !== not;
+		} );
+	}
+
+	// Single element
+	if ( qualifier.nodeType ) {
+		return jQuery.grep( elements, function( elem ) {
+			return ( elem === qualifier ) !== not;
+		} );
+	}
+
+	// Arraylike of elements (jQuery, arguments, Array)
+	if ( typeof qualifier !== "string" ) {
+		return jQuery.grep( elements, function( elem ) {
+			return ( indexOf.call( qualifier, elem ) > -1 ) !== not;
+		} );
+	}
+
+	// Simple selector that can be filtered directly, removing non-Elements
+	if ( risSimple.test( qualifier ) ) {
+		return jQuery.filter( qualifier, elements, not );
+	}
+
+	// Complex selector, compare the two sets, removing non-Elements
+	qualifier = jQuery.filter( qualifier, elements );
+	return jQuery.grep( elements, function( elem ) {
+		return ( indexOf.call( qualifier, elem ) > -1 ) !== not && elem.nodeType === 1;
+	} );
+}
+
+jQuery.filter = function( expr, elems, not ) {
+	var elem = elems[ 0 ];
+
+	if ( not ) {
+		expr = ":not(" + expr + ")";
+	}
+
+	if ( elems.length === 1 && elem.nodeType === 1 ) {
+		return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [];
+	}
+
+	return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) {
+		return elem.nodeType === 1;
+	} ) );
+};
+
+jQuery.fn.extend( {
+	find: function( selector ) {
+		var i, ret,
+			len = this.length,
+			self = this;
+
+		if ( typeof selector !== "string" ) {
+			return this.pushStack( jQuery( selector ).filter( function() {
+				for ( i = 0; i < len; i++ ) {
+					if ( jQuery.contains( self[ i ], this ) ) {
+						return true;
+					}
+				}
+			} ) );
+		}
+
+		ret = this.pushStack( [] );
+
+		for ( i = 0; i < len; i++ ) {
+			jQuery.find( selector, self[ i ], ret );
+		}
+
+		return len > 1 ? jQuery.uniqueSort( ret ) : ret;
+	},
+	filter: function( selector ) {
+		return this.pushStack( winnow( this, selector || [], false ) );
+	},
+	not: function( selector ) {
+		return this.pushStack( winnow( this, selector || [], true ) );
+	},
+	is: function( selector ) {
+		return !!winnow(
+			this,
+
+			// If this is a positional/relative selector, check membership in the returned set
+			// so $("p:first").is("p:last") won't return true for a doc with two "p".
+			typeof selector === "string" && rneedsContext.test( selector ) ?
+				jQuery( selector ) :
+				selector || [],
+			false
+		).length;
+	}
+} );
+
+
+// Initialize a jQuery object
+
+
+// A central reference to the root jQuery(document)
+var rootjQuery,
+
+	// A simple way to check for HTML strings
+	// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
+	// Strict HTML recognition (#11290: must start with <)
+	// Shortcut simple #id case for speed
+	rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,
+
+	init = jQuery.fn.init = function( selector, context, root ) {
+		var match, elem;
+
+		// HANDLE: $(""), $(null), $(undefined), $(false)
+		if ( !selector ) {
+			return this;
+		}
+
+		// Method init() accepts an alternate rootjQuery
+		// so migrate can support jQuery.sub (gh-2101)
+		root = root || rootjQuery;
+
+		// Handle HTML strings
+		if ( typeof selector === "string" ) {
+			if ( selector[ 0 ] === "<" &&
+				selector[ selector.length - 1 ] === ">" &&
+				selector.length >= 3 ) {
+
+				// Assume that strings that start and end with <> are HTML and skip the regex check
+				match = [ null, selector, null ];
+
+			} else {
+				match = rquickExpr.exec( selector );
+			}
+
+			// Match html or make sure no context is specified for #id
+			if ( match && ( match[ 1 ] || !context ) ) {
+
+				// HANDLE: $(html) -> $(array)
+				if ( match[ 1 ] ) {
+					context = context instanceof jQuery ? context[ 0 ] : context;
+
+					// Option to run scripts is true for back-compat
+					// Intentionally let the error be thrown if parseHTML is not present
+					jQuery.merge( this, jQuery.parseHTML(
+						match[ 1 ],
+						context && context.nodeType ? context.ownerDocument || context : document,
+						true
+					) );
+
+					// HANDLE: $(html, props)
+					if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) {
+						for ( match in context ) {
+
+							// Properties of context are called as methods if possible
+							if ( jQuery.isFunction( this[ match ] ) ) {
+								this[ match ]( context[ match ] );
+
+							// ...and otherwise set as attributes
+							} else {
+								this.attr( match, context[ match ] );
+							}
+						}
+					}
+
+					return this;
+
+				// HANDLE: $(#id)
+				} else {
+					elem = document.getElementById( match[ 2 ] );
+
+					if ( elem ) {
+
+						// Inject the element directly into the jQuery object
+						this[ 0 ] = elem;
+						this.length = 1;
+					}
+					return this;
+				}
+
+			// HANDLE: $(expr, $(...))
+			} else if ( !context || context.jquery ) {
+				return ( context || root ).find( selector );
+
+			// HANDLE: $(expr, context)
+			// (which is just equivalent to: $(context).find(expr)
+			} else {
+				return this.constructor( context ).find( selector );
+			}
+
+		// HANDLE: $(DOMElement)
+		} else if ( selector.nodeType ) {
+			this[ 0 ] = selector;
+			this.length = 1;
+			return this;
+
+		// HANDLE: $(function)
+		// Shortcut for document ready
+		} else if ( jQuery.isFunction( selector ) ) {
+			return root.ready !== undefined ?
+				root.ready( selector ) :
+
+				// Execute immediately if ready is not present
+				selector( jQuery );
+		}
+
+		return jQuery.makeArray( selector, this );
+	};
+
+// Give the init function the jQuery prototype for later instantiation
+init.prototype = jQuery.fn;
+
+// Initialize central reference
+rootjQuery = jQuery( document );
+
+
+var rparentsprev = /^(?:parents|prev(?:Until|All))/,
+
+	// Methods guaranteed to produce a unique set when starting from a unique set
+	guaranteedUnique = {
+		children: true,
+		contents: true,
+		next: true,
+		prev: true
+	};
+
+jQuery.fn.extend( {
+	has: function( target ) {
+		var targets = jQuery( target, this ),
+			l = targets.length;
+
+		return this.filter( function() {
+			var i = 0;
+			for ( ; i < l; i++ ) {
+				if ( jQuery.contains( this, targets[ i ] ) ) {
+					return true;
+				}
+			}
+		} );
+	},
+
+	closest: function( selectors, context ) {
+		var cur,
+			i = 0,
+			l = this.length,
+			matched = [],
+			targets = typeof selectors !== "string" && jQuery( selectors );
+
+		// Positional selectors never match, since there's no _selection_ context
+		if ( !rneedsContext.test( selectors ) ) {
+			for ( ; i < l; i++ ) {
+				for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) {
+
+					// Always skip document fragments
+					if ( cur.nodeType < 11 && ( targets ?
+						targets.index( cur ) > -1 :
+
+						// Don't pass non-elements to Sizzle
+						cur.nodeType === 1 &&
+							jQuery.find.matchesSelector( cur, selectors ) ) ) {
+
+						matched.push( cur );
+						break;
+					}
+				}
+			}
+		}
+
+		return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched );
+	},
+
+	// Determine the position of an element within the set
+	index: function( elem ) {
+
+		// No argument, return index in parent
+		if ( !elem ) {
+			return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1;
+		}
+
+		// Index in selector
+		if ( typeof elem === "string" ) {
+			return indexOf.call( jQuery( elem ), this[ 0 ] );
+		}
+
+		// Locate the position of the desired element
+		return indexOf.call( this,
+
+			// If it receives a jQuery object, the first element is used
+			elem.jquery ? elem[ 0 ] : elem
+		);
+	},
+
+	add: function( selector, context ) {
+		return this.pushStack(
+			jQuery.uniqueSort(
+				jQuery.merge( this.get(), jQuery( selector, context ) )
+			)
+		);
+	},
+
+	addBack: function( selector ) {
+		return this.add( selector == null ?
+			this.prevObject : this.prevObject.filter( selector )
+		);
+	}
+} );
+
+function sibling( cur, dir ) {
+	while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {}
+	return cur;
+}
+
+jQuery.each( {
+	parent: function( elem ) {
+		var parent = elem.parentNode;
+		return parent && parent.nodeType !== 11 ? parent : null;
+	},
+	parents: function( elem ) {
+		return dir( elem, "parentNode" );
+	},
+	parentsUntil: function( elem, i, until ) {
+		return dir( elem, "parentNode", until );
+	},
+	next: function( elem ) {
+		return sibling( elem, "nextSibling" );
+	},
+	prev: function( elem ) {
+		return sibling( elem, "previousSibling" );
+	},
+	nextAll: function( elem ) {
+		return dir( elem, "nextSibling" );
+	},
+	prevAll: function( elem ) {
+		return dir( elem, "previousSibling" );
+	},
+	nextUntil: function( elem, i, until ) {
+		return dir( elem, "nextSibling", until );
+	},
+	prevUntil: function( elem, i, until ) {
+		return dir( elem, "previousSibling", until );
+	},
+	siblings: function( elem ) {
+		return siblings( ( elem.parentNode || {} ).firstChild, elem );
+	},
+	children: function( elem ) {
+		return siblings( elem.firstChild );
+	},
+	contents: function( elem ) {
+        if ( nodeName( elem, "iframe" ) ) {
+            return elem.contentDocument;
+        }
+
+        // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only
+        // Treat the template element as a regular one in browsers that
+        // don't support it.
+        if ( nodeName( elem, "template" ) ) {
+            elem = elem.content || elem;
+        }
+
+        return jQuery.merge( [], elem.childNodes );
+	}
+}, function( name, fn ) {
+	jQuery.fn[ name ] = function( until, selector ) {
+		var matched = jQuery.map( this, fn, until );
+
+		if ( name.slice( -5 ) !== "Until" ) {
+			selector = until;
+		}
+
+		if ( selector && typeof selector === "string" ) {
+			matched = jQuery.filter( selector, matched );
+		}
+
+		if ( this.length > 1 ) {
+
+			// Remove duplicates
+			if ( !guaranteedUnique[ name ] ) {
+				jQuery.uniqueSort( matched );
+			}
+
+			// Reverse order for parents* and prev-derivatives
+			if ( rparentsprev.test( name ) ) {
+				matched.reverse();
+			}
+		}
+
+		return this.pushStack( matched );
+	};
+} );
+var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g );
+
+
+
+// Convert String-formatted options into Object-formatted ones
+function createOptions( options ) {
+	var object = {};
+	jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) {
+		object[ flag ] = true;
+	} );
+	return object;
+}
+
+/*
+ * Create a callback list using the following parameters:
+ *
+ *	options: an optional list of space-separated options that will change how
+ *			the callback list behaves or a more traditional option object
+ *
+ * By default a callback list will act like an event callback list and can be
+ * "fired" multiple times.
+ *
+ * Possible options:
+ *
+ *	once:			will ensure the callback list can only be fired once (like a Deferred)
+ *
+ *	memory:			will keep track of previous values and will call any callback added
+ *					after the list has been fired right away with the latest "memorized"
+ *					values (like a Deferred)
+ *
+ *	unique:			will ensure a callback can only be added once (no duplicate in the list)
+ *
+ *	stopOnFalse:	interrupt callings when a callback returns false
+ *
+ */
+jQuery.Callbacks = function( options ) {
+
+	// Convert options from String-formatted to Object-formatted if needed
+	// (we check in cache first)
+	options = typeof options === "string" ?
+		createOptions( options ) :
+		jQuery.extend( {}, options );
+
+	var // Flag to know if list is currently firing
+		firing,
+
+		// Last fire value for non-forgettable lists
+		memory,
+
+		// Flag to know if list was already fired
+		fired,
+
+		// Flag to prevent firing
+		locked,
+
+		// Actual callback list
+		list = [],
+
+		// Queue of execution data for repeatable lists
+		queue = [],
+
+		// Index of currently firing callback (modified by add/remove as needed)
+		firingIndex = -1,
+
+		// Fire callbacks
+		fire = function() {
+
+			// Enforce single-firing
+			locked = locked || options.once;
+
+			// Execute callbacks for all pending executions,
+			// respecting firingIndex overrides and runtime changes
+			fired = firing = true;
+			for ( ; queue.length; firingIndex = -1 ) {
+				memory = queue.shift();
+				while ( ++firingIndex < list.length ) {
+
+					// Run callback and check for early termination
+					if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false &&
+						options.stopOnFalse ) {
+
+						// Jump to end and forget the data so .add doesn't re-fire
+						firingIndex = list.length;
+						memory = false;
+					}
+				}
+			}
+
+			// Forget the data if we're done with it
+			if ( !options.memory ) {
+				memory = false;
+			}
+
+			firing = false;
+
+			// Clean up if we're done firing for good
+			if ( locked ) {
+
+				// Keep an empty list if we have data for future add calls
+				if ( memory ) {
+					list = [];
+
+				// Otherwise, this object is spent
+				} else {
+					list = "";
+				}
+			}
+		},
+
+		// Actual Callbacks object
+		self = {
+
+			// Add a callback or a collection of callbacks to the list
+			add: function() {
+				if ( list ) {
+
+					// If we have memory from a past run, we should fire after adding
+					if ( memory && !firing ) {
+						firingIndex = list.length - 1;
+						queue.push( memory );
+					}
+
+					( function add( args ) {
+						jQuery.each( args, function( _, arg ) {
+							if ( jQuery.isFunction( arg ) ) {
+								if ( !options.unique || !self.has( arg ) ) {
+									list.push( arg );
+								}
+							} else if ( arg && arg.length && jQuery.type( arg ) !== "string" ) {
+
+								// Inspect recursively
+								add( arg );
+							}
+						} );
+					} )( arguments );
+
+					if ( memory && !firing ) {
+						fire();
+					}
+				}
+				return this;
+			},
+
+			// Remove a callback from the list
+			remove: function() {
+				jQuery.each( arguments, function( _, arg ) {
+					var index;
+					while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) {
+						list.splice( index, 1 );
+
+						// Handle firing indexes
+						if ( index <= firingIndex ) {
+							firingIndex--;
+						}
+					}
+				} );
+				return this;
+			},
+
+			// Check if a given callback is in the list.
+			// If no argument is given, return whether or not list has callbacks attached.
+			has: function( fn ) {
+				return fn ?
+					jQuery.inArray( fn, list ) > -1 :
+					list.length > 0;
+			},
+
+			// Remove all callbacks from the list
+			empty: function() {
+				if ( list ) {
+					list = [];
+				}
+				return this;
+			},
+
+			// Disable .fire and .add
+			// Abort any current/pending executions
+			// Clear all callbacks and values
+			disable: function() {
+				locked = queue = [];
+				list = memory = "";
+				return this;
+			},
+			disabled: function() {
+				return !list;
+			},
+
+			// Disable .fire
+			// Also disable .add unless we have memory (since it would have no effect)
+			// Abort any pending executions
+			lock: function() {
+				locked = queue = [];
+				if ( !memory && !firing ) {
+					list = memory = "";
+				}
+				return this;
+			},
+			locked: function() {
+				return !!locked;
+			},
+
+			// Call all callbacks with the given context and arguments
+			fireWith: function( context, args ) {
+				if ( !locked ) {
+					args = args || [];
+					args = [ context, args.slice ? args.slice() : args ];
+					queue.push( args );
+					if ( !firing ) {
+						fire();
+					}
+				}
+				return this;
+			},
+
+			// Call all the callbacks with the given arguments
+			fire: function() {
+				self.fireWith( this, arguments );
+				return this;
+			},
+
+			// To know if the callbacks have already been called at least once
+			fired: function() {
+				return !!fired;
+			}
+		};
+
+	return self;
+};
+
+
+function Identity( v ) {
+	return v;
+}
+function Thrower( ex ) {
+	throw ex;
+}
+
+function adoptValue( value, resolve, reject, noValue ) {
+	var method;
+
+	try {
+
+		// Check for promise aspect first to privilege synchronous behavior
+		if ( value && jQuery.isFunction( ( method = value.promise ) ) ) {
+			method.call( value ).done( resolve ).fail( reject );
+
+		// Other thenables
+		} else if ( value && jQuery.isFunction( ( method = value.then ) ) ) {
+			method.call( value, resolve, reject );
+
+		// Other non-thenables
+		} else {
+
+			// Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:
+			// * false: [ value ].slice( 0 ) => resolve( value )
+			// * true: [ value ].slice( 1 ) => resolve()
+			resolve.apply( undefined, [ value ].slice( noValue ) );
+		}
+
+	// For Promises/A+, convert exceptions into rejections
+	// Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in
+	// Deferred#then to conditionally suppress rejection.
+	} catch ( value ) {
+
+		// Support: Android 4.0 only
+		// Strict mode functions invoked without .call/.apply get global-object context
+		reject.apply( undefined, [ value ] );
+	}
+}
+
+jQuery.extend( {
+
+	Deferred: function( func ) {
+		var tuples = [
+
+				// action, add listener, callbacks,
+				// ... .then handlers, argument index, [final state]
+				[ "notify", "progress", jQuery.Callbacks( "memory" ),
+					jQuery.Callbacks( "memory" ), 2 ],
+				[ "resolve", "done", jQuery.Callbacks( "once memory" ),
+					jQuery.Callbacks( "once memory" ), 0, "resolved" ],
+				[ "reject", "fail", jQuery.Callbacks( "once memory" ),
+					jQuery.Callbacks( "once memory" ), 1, "rejected" ]
+			],
+			state = "pending",
+			promise = {
+				state: function() {
+					return state;
+				},
+				always: function() {
+					deferred.done( arguments ).fail( arguments );
+					return this;
+				},
+				"catch": function( fn ) {
+					return promise.then( null, fn );
+				},
+
+				// Keep pipe for back-compat
+				pipe: function( /* fnDone, fnFail, fnProgress */ ) {
+					var fns = arguments;
+
+					return jQuery.Deferred( function( newDefer ) {
+						jQuery.each( tuples, function( i, tuple ) {
+
+							// Map tuples (progress, done, fail) to arguments (done, fail, progress)
+							var fn = jQuery.isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];
+
+							// deferred.progress(function() { bind to newDefer or newDefer.notify })
+							// deferred.done(function() { bind to newDefer or newDefer.resolve })
+							// deferred.fail(function() { bind to newDefer or newDefer.reject })
+							deferred[ tuple[ 1 ] ]( function() {
+								var returned = fn && fn.apply( this, arguments );
+								if ( returned && jQuery.isFunction( returned.promise ) ) {
+									returned.promise()
+										.progress( newDefer.notify )
+										.done( newDefer.resolve )
+										.fail( newDefer.reject );
+								} else {
+									newDefer[ tuple[ 0 ] + "With" ](
+										this,
+										fn ? [ returned ] : arguments
+									);
+								}
+							} );
+						} );
+						fns = null;
+					} ).promise();
+				},
+				then: function( onFulfilled, onRejected, onProgress ) {
+					var maxDepth = 0;
+					function resolve( depth, deferred, handler, special ) {
+						return function() {
+							var that = this,
+								args = arguments,
+								mightThrow = function() {
+									var returned, then;
+
+									// Support: Promises/A+ section 2.3.3.3.3
+									// https://promisesaplus.com/#point-59
+									// Ignore double-resolution attempts
+									if ( depth < maxDepth ) {
+										return;
+									}
+
+									returned = handler.apply( that, args );
+
+									// Support: Promises/A+ section 2.3.1
+									// https://promisesaplus.com/#point-48
+									if ( returned === deferred.promise() ) {
+										throw new TypeError( "Thenable self-resolution" );
+									}
+
+									// Support: Promises/A+ sections 2.3.3.1, 3.5
+									// https://promisesaplus.com/#point-54
+									// https://promisesaplus.com/#point-75
+									// Retrieve `then` only once
+									then = returned &&
+
+										// Support: Promises/A+ section 2.3.4
+										// https://promisesaplus.com/#point-64
+										// Only check objects and functions for thenability
+										( typeof returned === "object" ||
+											typeof returned === "function" ) &&
+										returned.then;
+
+									// Handle a returned thenable
+									if ( jQuery.isFunction( then ) ) {
+
+										// Special processors (notify) just wait for resolution
+										if ( special ) {
+											then.call(
+												returned,
+												resolve( maxDepth, deferred, Identity, special ),
+												resolve( maxDepth, deferred, Thrower, special )
+											);
+
+										// Normal processors (resolve) also hook into progress
+										} else {
+
+											// ...and disregard older resolution values
+											maxDepth++;
+
+											then.call(
+												returned,
+												resolve( maxDepth, deferred, Identity, special ),
+												resolve( maxDepth, deferred, Thrower, special ),
+												resolve( maxDepth, deferred, Identity,
+													deferred.notifyWith )
+											);
+										}
+
+									// Handle all other returned values
+									} else {
+
+										// Only substitute handlers pass on context
+										// and multiple values (non-spec behavior)
+										if ( handler !== Identity ) {
+											that = undefined;
+											args = [ returned ];
+										}
+
+										// Process the value(s)
+										// Default process is resolve
+										( special || deferred.resolveWith )( that, args );
+									}
+								},
+
+								// Only normal processors (resolve) catch and reject exceptions
+								process = special ?
+									mightThrow :
+									function() {
+										try {
+											mightThrow();
+										} catch ( e ) {
+
+											if ( jQuery.Deferred.exceptionHook ) {
+												jQuery.Deferred.exceptionHook( e,
+													process.stackTrace );
+											}
+
+											// Support: Promises/A+ section 2.3.3.3.4.1
+											// https://promisesaplus.com/#point-61
+											// Ignore post-resolution exceptions
+											if ( depth + 1 >= maxDepth ) {
+
+												// Only substitute handlers pass on context
+												// and multiple values (non-spec behavior)
+												if ( handler !== Thrower ) {
+													that = undefined;
+													args = [ e ];
+												}
+
+												deferred.rejectWith( that, args );
+											}
+										}
+									};
+
+							// Support: Promises/A+ section 2.3.3.3.1
+							// https://promisesaplus.com/#point-57
+							// Re-resolve promises immediately to dodge false rejection from
+							// subsequent errors
+							if ( depth ) {
+								process();
+							} else {
+
+								// Call an optional hook to record the stack, in case of exception
+								// since it's otherwise lost when execution goes async
+								if ( jQuery.Deferred.getStackHook ) {
+									process.stackTrace = jQuery.Deferred.getStackHook();
+								}
+								window.setTimeout( process );
+							}
+						};
+					}
+
+					return jQuery.Deferred( function( newDefer ) {
+
+						// progress_handlers.add( ... )
+						tuples[ 0 ][ 3 ].add(
+							resolve(
+								0,
+								newDefer,
+								jQuery.isFunction( onProgress ) ?
+									onProgress :
+									Identity,
+								newDefer.notifyWith
+							)
+						);
+
+						// fulfilled_handlers.add( ... )
+						tuples[ 1 ][ 3 ].add(
+							resolve(
+								0,
+								newDefer,
+								jQuery.isFunction( onFulfilled ) ?
+									onFulfilled :
+									Identity
+							)
+						);
+
+						// rejected_handlers.add( ... )
+						tuples[ 2 ][ 3 ].add(
+							resolve(
+								0,
+								newDefer,
+								jQuery.isFunction( onRejected ) ?
+									onRejected :
+									Thrower
+							)
+						);
+					} ).promise();
+				},
+
+				// Get a promise for this deferred
+				// If obj is provided, the promise aspect is added to the object
+				promise: function( obj ) {
+					return obj != null ? jQuery.extend( obj, promise ) : promise;
+				}
+			},
+			deferred = {};
+
+		// Add list-specific methods
+		jQuery.each( tuples, function( i, tuple ) {
+			var list = tuple[ 2 ],
+				stateString = tuple[ 5 ];
+
+			// promise.progress = list.add
+			// promise.done = list.add
+			// promise.fail = list.add
+			promise[ tuple[ 1 ] ] = list.add;
+
+			// Handle state
+			if ( stateString ) {
+				list.add(
+					function() {
+
+						// state = "resolved" (i.e., fulfilled)
+						// state = "rejected"
+						state = stateString;
+					},
+
+					// rejected_callbacks.disable
+					// fulfilled_callbacks.disable
+					tuples[ 3 - i ][ 2 ].disable,
+
+					// progress_callbacks.lock
+					tuples[ 0 ][ 2 ].lock
+				);
+			}
+
+			// progress_handlers.fire
+			// fulfilled_handlers.fire
+			// rejected_handlers.fire
+			list.add( tuple[ 3 ].fire );
+
+			// deferred.notify = function() { deferred.notifyWith(...) }
+			// deferred.resolve = function() { deferred.resolveWith(...) }
+			// deferred.reject = function() { deferred.rejectWith(...) }
+			deferred[ tuple[ 0 ] ] = function() {
+				deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments );
+				return this;
+			};
+
+			// deferred.notifyWith = list.fireWith
+			// deferred.resolveWith = list.fireWith
+			// deferred.rejectWith = list.fireWith
+			deferred[ tuple[ 0 ] + "With" ] = list.fireWith;
+		} );
+
+		// Make the deferred a promise
+		promise.promise( deferred );
+
+		// Call given func if any
+		if ( func ) {
+			func.call( deferred, deferred );
+		}
+
+		// All done!
+		return deferred;
+	},
+
+	// Deferred helper
+	when: function( singleValue ) {
+		var
+
+			// count of uncompleted subordinates
+			remaining = arguments.length,
+
+			// count of unprocessed arguments
+			i = remaining,
+
+			// subordinate fulfillment data
+			resolveContexts = Array( i ),
+			resolveValues = slice.call( arguments ),
+
+			// the master Deferred
+			master = jQuery.Deferred(),
+
+			// subordinate callback factory
+			updateFunc = function( i ) {
+				return function( value ) {
+					resolveContexts[ i ] = this;
+					resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value;
+					if ( !( --remaining ) ) {
+						master.resolveWith( resolveContexts, resolveValues );
+					}
+				};
+			};
+
+		// Single- and empty arguments are adopted like Promise.resolve
+		if ( remaining <= 1 ) {
+			adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject,
+				!remaining );
+
+			// Use .then() to unwrap secondary thenables (cf. gh-3000)
+			if ( master.state() === "pending" ||
+				jQuery.isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {
+
+				return master.then();
+			}
+		}
+
+		// Multiple arguments are aggregated like Promise.all array elements
+		while ( i-- ) {
+			adoptValue( resolveValues[ i ], updateFunc( i ), master.reject );
+		}
+
+		return master.promise();
+	}
+} );
+
+
+// These usually indicate a programmer mistake during development,
+// warn about them ASAP rather than swallowing them by default.
+var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;
+
+jQuery.Deferred.exceptionHook = function( error, stack ) {
+
+	// Support: IE 8 - 9 only
+	// Console exists when dev tools are open, which can happen at any time
+	if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) {
+		window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack );
+	}
+};
+
+
+
+
+jQuery.readyException = function( error ) {
+	window.setTimeout( function() {
+		throw error;
+	} );
+};
+
+
+
+
+// The deferred used on DOM ready
+var readyList = jQuery.Deferred();
+
+jQuery.fn.ready = function( fn ) {
+
+	readyList
+		.then( fn )
+
+		// Wrap jQuery.readyException in a function so that the lookup
+		// happens at the time of error handling instead of callback
+		// registration.
+		.catch( function( error ) {
+			jQuery.readyException( error );
+		} );
+
+	return this;
+};
+
+jQuery.extend( {
+
+	// Is the DOM ready to be used? Set to true once it occurs.
+	isReady: false,
+
+	// A counter to track how many items to wait for before
+	// the ready event fires. See #6781
+	readyWait: 1,
+
+	// Handle when the DOM is ready
+	ready: function( wait ) {
+
+		// Abort if there are pending holds or we're already ready
+		if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
+			return;
+		}
+
+		// Remember that the DOM is ready
+		jQuery.isReady = true;
+
+		// If a normal DOM Ready event fired, decrement, and wait if need be
+		if ( wait !== true && --jQuery.readyWait > 0 ) {
+			return;
+		}
+
+		// If there are functions bound, to execute
+		readyList.resolveWith( document, [ jQuery ] );
+	}
+} );
+
+jQuery.ready.then = readyList.then;
+
+// The ready event handler and self cleanup method
+function completed() {
+	document.removeEventListener( "DOMContentLoaded", completed );
+	window.removeEventListener( "load", completed );
+	jQuery.ready();
+}
+
+// Catch cases where $(document).ready() is called
+// after the browser event has already occurred.
+// Support: IE <=9 - 10 only
+// Older IE sometimes signals "interactive" too soon
+if ( document.readyState === "complete" ||
+	( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {
+
+	// Handle it asynchronously to allow scripts the opportunity to delay ready
+	window.setTimeout( jQuery.ready );
+
+} else {
+
+	// Use the handy event callback
+	document.addEventListener( "DOMContentLoaded", completed );
+
+	// A fallback to window.onload, that will always work
+	window.addEventListener( "load", completed );
+}
+
+
+
+
+// Multifunctional method to get and set values of a collection
+// The value/s can optionally be executed if it's a function
+var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
+	var i = 0,
+		len = elems.length,
+		bulk = key == null;
+
+	// Sets many values
+	if ( jQuery.type( key ) === "object" ) {
+		chainable = true;
+		for ( i in key ) {
+			access( elems, fn, i, key[ i ], true, emptyGet, raw );
+		}
+
+	// Sets one value
+	} else if ( value !== undefined ) {
+		chainable = true;
+
+		if ( !jQuery.isFunction( value ) ) {
+			raw = true;
+		}
+
+		if ( bulk ) {
+
+			// Bulk operations run against the entire set
+			if ( raw ) {
+				fn.call( elems, value );
+				fn = null;
+
+			// ...except when executing function values
+			} else {
+				bulk = fn;
+				fn = function( elem, key, value ) {
+					return bulk.call( jQuery( elem ), value );
+				};
+			}
+		}
+
+		if ( fn ) {
+			for ( ; i < len; i++ ) {
+				fn(
+					elems[ i ], key, raw ?
+					value :
+					value.call( elems[ i ], i, fn( elems[ i ], key ) )
+				);
+			}
+		}
+	}
+
+	if ( chainable ) {
+		return elems;
+	}
+
+	// Gets
+	if ( bulk ) {
+		return fn.call( elems );
+	}
+
+	return len ? fn( elems[ 0 ], key ) : emptyGet;
+};
+var acceptData = function( owner ) {
+
+	// Accepts only:
+	//  - Node
+	//    - Node.ELEMENT_NODE
+	//    - Node.DOCUMENT_NODE
+	//  - Object
+	//    - Any
+	return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType );
+};
+
+
+
+
+function Data() {
+	this.expando = jQuery.expando + Data.uid++;
+}
+
+Data.uid = 1;
+
+Data.prototype = {
+
+	cache: function( owner ) {
+
+		// Check if the owner object already has a cache
+		var value = owner[ this.expando ];
+
+		// If not, create one
+		if ( !value ) {
+			value = {};
+
+			// We can accept data for non-element nodes in modern browsers,
+			// but we should not, see #8335.
+			// Always return an empty object.
+			if ( acceptData( owner ) ) {
+
+				// If it is a node unlikely to be stringify-ed or looped over
+				// use plain assignment
+				if ( owner.nodeType ) {
+					owner[ this.expando ] = value;
+
+				// Otherwise secure it in a non-enumerable property
+				// configurable must be true to allow the property to be
+				// deleted when data is removed
+				} else {
+					Object.defineProperty( owner, this.expando, {
+						value: value,
+						configurable: true
+					} );
+				}
+			}
+		}
+
+		return value;
+	},
+	set: function( owner, data, value ) {
+		var prop,
+			cache = this.cache( owner );
+
+		// Handle: [ owner, key, value ] args
+		// Always use camelCase key (gh-2257)
+		if ( typeof data === "string" ) {
+			cache[ jQuery.camelCase( data ) ] = value;
+
+		// Handle: [ owner, { properties } ] args
+		} else {
+
+			// Copy the properties one-by-one to the cache object
+			for ( prop in data ) {
+				cache[ jQuery.camelCase( prop ) ] = data[ prop ];
+			}
+		}
+		return cache;
+	},
+	get: function( owner, key ) {
+		return key === undefined ?
+			this.cache( owner ) :
+
+			// Always use camelCase key (gh-2257)
+			owner[ this.expando ] && owner[ this.expando ][ jQuery.camelCase( key ) ];
+	},
+	access: function( owner, key, value ) {
+
+		// In cases where either:
+		//
+		//   1. No key was specified
+		//   2. A string key was specified, but no value provided
+		//
+		// Take the "read" path and allow the get method to determine
+		// which value to return, respectively either:
+		//
+		//   1. The entire cache object
+		//   2. The data stored at the key
+		//
+		if ( key === undefined ||
+				( ( key && typeof key === "string" ) && value === undefined ) ) {
+
+			return this.get( owner, key );
+		}
+
+		// When the key is not a string, or both a key and value
+		// are specified, set or extend (existing objects) with either:
+		//
+		//   1. An object of properties
+		//   2. A key and value
+		//
+		this.set( owner, key, value );
+
+		// Since the "set" path can have two possible entry points
+		// return the expected data based on which path was taken[*]
+		return value !== undefined ? value : key;
+	},
+	remove: function( owner, key ) {
+		var i,
+			cache = owner[ this.expando ];
+
+		if ( cache === undefined ) {
+			return;
+		}
+
+		if ( key !== undefined ) {
+
+			// Support array or space separated string of keys
+			if ( Array.isArray( key ) ) {
+
+				// If key is an array of keys...
+				// We always set camelCase keys, so remove that.
+				key = key.map( jQuery.camelCase );
+			} else {
+				key = jQuery.camelCase( key );
+
+				// If a key with the spaces exists, use it.
+				// Otherwise, create an array by matching non-whitespace
+				key = key in cache ?
+					[ key ] :
+					( key.match( rnothtmlwhite ) || [] );
+			}
+
+			i = key.length;
+
+			while ( i-- ) {
+				delete cache[ key[ i ] ];
+			}
+		}
+
+		// Remove the expando if there's no more data
+		if ( key === undefined || jQuery.isEmptyObject( cache ) ) {
+
+			// Support: Chrome <=35 - 45
+			// Webkit & Blink performance suffers when deleting properties
+			// from DOM nodes, so set to undefined instead
+			// https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)
+			if ( owner.nodeType ) {
+				owner[ this.expando ] = undefined;
+			} else {
+				delete owner[ this.expando ];
+			}
+		}
+	},
+	hasData: function( owner ) {
+		var cache = owner[ this.expando ];
+		return cache !== undefined && !jQuery.isEmptyObject( cache );
+	}
+};
+var dataPriv = new Data();
+
+var dataUser = new Data();
+
+
+
+//	Implementation Summary
+//
+//	1. Enforce API surface and semantic compatibility with 1.9.x branch
+//	2. Improve the module's maintainability by reducing the storage
+//		paths to a single mechanism.
+//	3. Use the same single mechanism to support "private" and "user" data.
+//	4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
+//	5. Avoid exposing implementation details on user objects (eg. expando properties)
+//	6. Provide a clear path for implementation upgrade to WeakMap in 2014
+
+var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
+	rmultiDash = /[A-Z]/g;
+
+function getData( data ) {
+	if ( data === "true" ) {
+		return true;
+	}
+
+	if ( data === "false" ) {
+		return false;
+	}
+
+	if ( data === "null" ) {
+		return null;
+	}
+
+	// Only convert to a number if it doesn't change the string
+	if ( data === +data + "" ) {
+		return +data;
+	}
+
+	if ( rbrace.test( data ) ) {
+		return JSON.parse( data );
+	}
+
+	return data;
+}
+
+function dataAttr( elem, key, data ) {
+	var name;
+
+	// If nothing was found internally, try to fetch any
+	// data from the HTML5 data-* attribute
+	if ( data === undefined && elem.nodeType === 1 ) {
+		name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase();
+		data = elem.getAttribute( name );
+
+		if ( typeof data === "string" ) {
+			try {
+				data = getData( data );
+			} catch ( e ) {}
+
+			// Make sure we set the data so it isn't changed later
+			dataUser.set( elem, key, data );
+		} else {
+			data = undefined;
+		}
+	}
+	return data;
+}
+
+jQuery.extend( {
+	hasData: function( elem ) {
+		return dataUser.hasData( elem ) || dataPriv.hasData( elem );
+	},
+
+	data: function( elem, name, data ) {
+		return dataUser.access( elem, name, data );
+	},
+
+	removeData: function( elem, name ) {
+		dataUser.remove( elem, name );
+	},
+
+	// TODO: Now that all calls to _data and _removeData have been replaced
+	// with direct calls to dataPriv methods, these can be deprecated.
+	_data: function( elem, name, data ) {
+		return dataPriv.access( elem, name, data );
+	},
+
+	_removeData: function( elem, name ) {
+		dataPriv.remove( elem, name );
+	}
+} );
+
+jQuery.fn.extend( {
+	data: function( key, value ) {
+		var i, name, data,
+			elem = this[ 0 ],
+			attrs = elem && elem.attributes;
+
+		// Gets all values
+		if ( key === undefined ) {
+			if ( this.length ) {
+				data = dataUser.get( elem );
+
+				if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) {
+					i = attrs.length;
+					while ( i-- ) {
+
+						// Support: IE 11 only
+						// The attrs elements can be null (#14894)
+						if ( attrs[ i ] ) {
+							name = attrs[ i ].name;
+							if ( name.indexOf( "data-" ) === 0 ) {
+								name = jQuery.camelCase( name.slice( 5 ) );
+								dataAttr( elem, name, data[ name ] );
+							}
+						}
+					}
+					dataPriv.set( elem, "hasDataAttrs", true );
+				}
+			}
+
+			return data;
+		}
+
+		// Sets multiple values
+		if ( typeof key === "object" ) {
+			return this.each( function() {
+				dataUser.set( this, key );
+			} );
+		}
+
+		return access( this, function( value ) {
+			var data;
+
+			// The calling jQuery object (element matches) is not empty
+			// (and therefore has an element appears at this[ 0 ]) and the
+			// `value` parameter was not undefined. An empty jQuery object
+			// will result in `undefined` for elem = this[ 0 ] which will
+			// throw an exception if an attempt to read a data cache is made.
+			if ( elem && value === undefined ) {
+
+				// Attempt to get data from the cache
+				// The key will always be camelCased in Data
+				data = dataUser.get( elem, key );
+				if ( data !== undefined ) {
+					return data;
+				}
+
+				// Attempt to "discover" the data in
+				// HTML5 custom data-* attrs
+				data = dataAttr( elem, key );
+				if ( data !== undefined ) {
+					return data;
+				}
+
+				// We tried really hard, but the data doesn't exist.
+				return;
+			}
+
+			// Set the data...
+			this.each( function() {
+
+				// We always store the camelCased key
+				dataUser.set( this, key, value );
+			} );
+		}, null, value, arguments.length > 1, null, true );
+	},
+
+	removeData: function( key ) {
+		return this.each( function() {
+			dataUser.remove( this, key );
+		} );
+	}
+} );
+
+
+jQuery.extend( {
+	queue: function( elem, type, data ) {
+		var queue;
+
+		if ( elem ) {
+			type = ( type || "fx" ) + "queue";
+			queue = dataPriv.get( elem, type );
+
+			// Speed up dequeue by getting out quickly if this is just a lookup
+			if ( data ) {
+				if ( !queue || Array.isArray( data ) ) {
+					queue = dataPriv.access( elem, type, jQuery.makeArray( data ) );
+				} else {
+					queue.push( data );
+				}
+			}
+			return queue || [];
+		}
+	},
+
+	dequeue: function( elem, type ) {
+		type = type || "fx";
+
+		var queue = jQuery.queue( elem, type ),
+			startLength = queue.length,
+			fn = queue.shift(),
+			hooks = jQuery._queueHooks( elem, type ),
+			next = function() {
+				jQuery.dequeue( elem, type );
+			};
+
+		// If the fx queue is dequeued, always remove the progress sentinel
+		if ( fn === "inprogress" ) {
+			fn = queue.shift();
+			startLength--;
+		}
+
+		if ( fn ) {
+
+			// Add a progress sentinel to prevent the fx queue from being
+			// automatically dequeued
+			if ( type === "fx" ) {
+				queue.unshift( "inprogress" );
+			}
+
+			// Clear up the last queue stop function
+			delete hooks.stop;
+			fn.call( elem, next, hooks );
+		}
+
+		if ( !startLength && hooks ) {
+			hooks.empty.fire();
+		}
+	},
+
+	// Not public - generate a queueHooks object, or return the current one
+	_queueHooks: function( elem, type ) {
+		var key = type + "queueHooks";
+		return dataPriv.get( elem, key ) || dataPriv.access( elem, key, {
+			empty: jQuery.Callbacks( "once memory" ).add( function() {
+				dataPriv.remove( elem, [ type + "queue", key ] );
+			} )
+		} );
+	}
+} );
+
+jQuery.fn.extend( {
+	queue: function( type, data ) {
+		var setter = 2;
+
+		if ( typeof type !== "string" ) {
+			data = type;
+			type = "fx";
+			setter--;
+		}
+
+		if ( arguments.length < setter ) {
+			return jQuery.queue( this[ 0 ], type );
+		}
+
+		return data === undefined ?
+			this :
+			this.each( function() {
+				var queue = jQuery.queue( this, type, data );
+
+				// Ensure a hooks for this queue
+				jQuery._queueHooks( this, type );
+
+				if ( type === "fx" && queue[ 0 ] !== "inprogress" ) {
+					jQuery.dequeue( this, type );
+				}
+			} );
+	},
+	dequeue: function( type ) {
+		return this.each( function() {
+			jQuery.dequeue( this, type );
+		} );
+	},
+	clearQueue: function( type ) {
+		return this.queue( type || "fx", [] );
+	},
+
+	// Get a promise resolved when queues of a certain type
+	// are emptied (fx is the type by default)
+	promise: function( type, obj ) {
+		var tmp,
+			count = 1,
+			defer = jQuery.Deferred(),
+			elements = this,
+			i = this.length,
+			resolve = function() {
+				if ( !( --count ) ) {
+					defer.resolveWith( elements, [ elements ] );
+				}
+			};
+
+		if ( typeof type !== "string" ) {
+			obj = type;
+			type = undefined;
+		}
+		type = type || "fx";
+
+		while ( i-- ) {
+			tmp = dataPriv.get( elements[ i ], type + "queueHooks" );
+			if ( tmp && tmp.empty ) {
+				count++;
+				tmp.empty.add( resolve );
+			}
+		}
+		resolve();
+		return defer.promise( obj );
+	}
+} );
+var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source;
+
+var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );
+
+
+var cssExpand = [ "Top", "Right", "Bottom", "Left" ];
+
+var isHiddenWithinTree = function( elem, el ) {
+
+		// isHiddenWithinTree might be called from jQuery#filter function;
+		// in that case, element will be second argument
+		elem = el || elem;
+
+		// Inline style trumps all
+		return elem.style.display === "none" ||
+			elem.style.display === "" &&
+
+			// Otherwise, check computed style
+			// Support: Firefox <=43 - 45
+			// Disconnected elements can have computed display: none, so first confirm that elem is
+			// in the document.
+			jQuery.contains( elem.ownerDocument, elem ) &&
+
+			jQuery.css( elem, "display" ) === "none";
+	};
+
+var swap = function( elem, options, callback, args ) {
+	var ret, name,
+		old = {};
+
+	// Remember the old values, and insert the new ones
+	for ( name in options ) {
+		old[ name ] = elem.style[ name ];
+		elem.style[ name ] = options[ name ];
+	}
+
+	ret = callback.apply( elem, args || [] );
+
+	// Revert the old values
+	for ( name in options ) {
+		elem.style[ name ] = old[ name ];
+	}
+
+	return ret;
+};
+
+
+
+
+function adjustCSS( elem, prop, valueParts, tween ) {
+	var adjusted,
+		scale = 1,
+		maxIterations = 20,
+		currentValue = tween ?
+			function() {
+				return tween.cur();
+			} :
+			function() {
+				return jQuery.css( elem, prop, "" );
+			},
+		initial = currentValue(),
+		unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),
+
+		// Starting value computation is required for potential unit mismatches
+		initialInUnit = ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) &&
+			rcssNum.exec( jQuery.css( elem, prop ) );
+
+	if ( initialInUnit && initialInUnit[ 3 ] !== unit ) {
+
+		// Trust units reported by jQuery.css
+		unit = unit || initialInUnit[ 3 ];
+
+		// Make sure we update the tween properties later on
+		valueParts = valueParts || [];
+
+		// Iteratively approximate from a nonzero starting point
+		initialInUnit = +initial || 1;
+
+		do {
+
+			// If previous iteration zeroed out, double until we get *something*.
+			// Use string for doubling so we don't accidentally see scale as unchanged below
+			scale = scale || ".5";
+
+			// Adjust and apply
+			initialInUnit = initialInUnit / scale;
+			jQuery.style( elem, prop, initialInUnit + unit );
+
+		// Update scale, tolerating zero or NaN from tween.cur()
+		// Break the loop if scale is unchanged or perfect, or if we've just had enough.
+		} while (
+			scale !== ( scale = currentValue() / initial ) && scale !== 1 && --maxIterations
+		);
+	}
+
+	if ( valueParts ) {
+		initialInUnit = +initialInUnit || +initial || 0;
+
+		// Apply relative offset (+=/-=) if specified
+		adjusted = valueParts[ 1 ] ?
+			initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] :
+			+valueParts[ 2 ];
+		if ( tween ) {
+			tween.unit = unit;
+			tween.start = initialInUnit;
+			tween.end = adjusted;
+		}
+	}
+	return adjusted;
+}
+
+
+var defaultDisplayMap = {};
+
+function getDefaultDisplay( elem ) {
+	var temp,
+		doc = elem.ownerDocument,
+		nodeName = elem.nodeName,
+		display = defaultDisplayMap[ nodeName ];
+
+	if ( display ) {
+		return display;
+	}
+
+	temp = doc.body.appendChild( doc.createElement( nodeName ) );
+	display = jQuery.css( temp, "display" );
+
+	temp.parentNode.removeChild( temp );
+
+	if ( display === "none" ) {
+		display = "block";
+	}
+	defaultDisplayMap[ nodeName ] = display;
+
+	return display;
+}
+
+function showHide( elements, show ) {
+	var display, elem,
+		values = [],
+		index = 0,
+		length = elements.length;
+
+	// Determine new display value for elements that need to change
+	for ( ; index < length; index++ ) {
+		elem = elements[ index ];
+		if ( !elem.style ) {
+			continue;
+		}
+
+		display = elem.style.display;
+		if ( show ) {
+
+			// Since we force visibility upon cascade-hidden elements, an immediate (and slow)
+			// check is required in this first loop unless we have a nonempty display value (either
+			// inline or about-to-be-restored)
+			if ( display === "none" ) {
+				values[ index ] = dataPriv.get( elem, "display" ) || null;
+				if ( !values[ index ] ) {
+					elem.style.display = "";
+				}
+			}
+			if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) {
+				values[ index ] = getDefaultDisplay( elem );
+			}
+		} else {
+			if ( display !== "none" ) {
+				values[ index ] = "none";
+
+				// Remember what we're overwriting
+				dataPriv.set( elem, "display", display );
+			}
+		}
+	}
+
+	// Set the display of the elements in a second loop to avoid constant reflow
+	for ( index = 0; index < length; index++ ) {
+		if ( values[ index ] != null ) {
+			elements[ index ].style.display = values[ index ];
+		}
+	}
+
+	return elements;
+}
+
+jQuery.fn.extend( {
+	show: function() {
+		return showHide( this, true );
+	},
+	hide: function() {
+		return showHide( this );
+	},
+	toggle: function( state ) {
+		if ( typeof state === "boolean" ) {
+			return state ? this.show() : this.hide();
+		}
+
+		return this.each( function() {
+			if ( isHiddenWithinTree( this ) ) {
+				jQuery( this ).show();
+			} else {
+				jQuery( this ).hide();
+			}
+		} );
+	}
+} );
+var rcheckableType = ( /^(?:checkbox|radio)$/i );
+
+var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]+)/i );
+
+var rscriptType = ( /^$|\/(?:java|ecma)script/i );
+
+
+
+// We have to close these tags to support XHTML (#13200)
+var wrapMap = {
+
+	// Support: IE <=9 only
+	option: [ 1, "<select multiple='multiple'>", "</select>" ],
+
+	// XHTML parsers do not magically insert elements in the
+	// same way that tag soup parsers do. So we cannot shorten
+	// this by omitting <tbody> or other required elements.
+	thead: [ 1, "<table>", "</table>" ],
+	col: [ 2, "<table><colgroup>", "</colgroup></table>" ],
+	tr: [ 2, "<table><tbody>", "</tbody></table>" ],
+	td: [ 3, "<table><tbody><tr>", "</tr></tbody></table>" ],
+
+	_default: [ 0, "", "" ]
+};
+
+// Support: IE <=9 only
+wrapMap.optgroup = wrapMap.option;
+
+wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
+wrapMap.th = wrapMap.td;
+
+
+function getAll( context, tag ) {
+
+	// Support: IE <=9 - 11 only
+	// Use typeof to avoid zero-argument method invocation on host objects (#15151)
+	var ret;
+
+	if ( typeof context.getElementsByTagName !== "undefined" ) {
+		ret = context.getElementsByTagName( tag || "*" );
+
+	} else if ( typeof context.querySelectorAll !== "undefined" ) {
+		ret = context.querySelectorAll( tag || "*" );
+
+	} else {
+		ret = [];
+	}
+
+	if ( tag === undefined || tag && nodeName( context, tag ) ) {
+		return jQuery.merge( [ context ], ret );
+	}
+
+	return ret;
+}
+
+
+// Mark scripts as having already been evaluated
+function setGlobalEval( elems, refElements ) {
+	var i = 0,
+		l = elems.length;
+
+	for ( ; i < l; i++ ) {
+		dataPriv.set(
+			elems[ i ],
+			"globalEval",
+			!refElements || dataPriv.get( refElements[ i ], "globalEval" )
+		);
+	}
+}
+
+
+var rhtml = /<|&#?\w+;/;
+
+function buildFragment( elems, context, scripts, selection, ignored ) {
+	var elem, tmp, tag, wrap, contains, j,
+		fragment = context.createDocumentFragment(),
+		nodes = [],
+		i = 0,
+		l = elems.length;
+
+	for ( ; i < l; i++ ) {
+		elem = elems[ i ];
+
+		if ( elem || elem === 0 ) {
+
+			// Add nodes directly
+			if ( jQuery.type( elem ) === "object" ) {
+
+				// Support: Android <=4.0 only, PhantomJS 1 only
+				// push.apply(_, arraylike) throws on ancient WebKit
+				jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem );
+
+			// Convert non-html into a text node
+			} else if ( !rhtml.test( elem ) ) {
+				nodes.push( context.createTextNode( elem ) );
+
+			// Convert html into DOM nodes
+			} else {
+				tmp = tmp || fragment.appendChild( context.createElement( "div" ) );
+
+				// Deserialize a standard representation
+				tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase();
+				wrap = wrapMap[ tag ] || wrapMap._default;
+				tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ];
+
+				// Descend through wrappers to the right content
+				j = wrap[ 0 ];
+				while ( j-- ) {
+					tmp = tmp.lastChild;
+				}
+
+				// Support: Android <=4.0 only, PhantomJS 1 only
+				// push.apply(_, arraylike) throws on ancient WebKit
+				jQuery.merge( nodes, tmp.childNodes );
+
+				// Remember the top-level container
+				tmp = fragment.firstChild;
+
+				// Ensure the created nodes are orphaned (#12392)
+				tmp.textContent = "";
+			}
+		}
+	}
+
+	// Remove wrapper from fragment
+	fragment.textContent = "";
+
+	i = 0;
+	while ( ( elem = nodes[ i++ ] ) ) {
+
+		// Skip elements already in the context collection (trac-4087)
+		if ( selection && jQuery.inArray( elem, selection ) > -1 ) {
+			if ( ignored ) {
+				ignored.push( elem );
+			}
+			continue;
+		}
+
+		contains = jQuery.contains( elem.ownerDocument, elem );
+
+		// Append to fragment
+		tmp = getAll( fragment.appendChild( elem ), "script" );
+
+		// Preserve script evaluation history
+		if ( contains ) {
+			setGlobalEval( tmp );
+		}
+
+		// Capture executables
+		if ( scripts ) {
+			j = 0;
+			while ( ( elem = tmp[ j++ ] ) ) {
+				if ( rscriptType.test( elem.type || "" ) ) {
+					scripts.push( elem );
+				}
+			}
+		}
+	}
+
+	return fragment;
+}
+
+
+( function() {
+	var fragment = document.createDocumentFragment(),
+		div = fragment.appendChild( document.createElement( "div" ) ),
+		input = document.createElement( "input" );
+
+	// Support: Android 4.0 - 4.3 only
+	// Check state lost if the name is set (#11217)
+	// Support: Windows Web Apps (WWA)
+	// `name` and `type` must use .setAttribute for WWA (#14901)
+	input.setAttribute( "type", "radio" );
+	input.setAttribute( "checked", "checked" );
+	input.setAttribute( "name", "t" );
+
+	div.appendChild( input );
+
+	// Support: Android <=4.1 only
+	// Older WebKit doesn't clone checked state correctly in fragments
+	support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked;
+
+	// Support: IE <=11 only
+	// Make sure textarea (and checkbox) defaultValue is properly cloned
+	div.innerHTML = "<textarea>x</textarea>";
+	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;
+} )();
+var documentElement = document.documentElement;
+
+
+
+var
+	rkeyEvent = /^key/,
+	rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,
+	rtypenamespace = /^([^.]*)(?:\.(.+)|)/;
+
+function returnTrue() {
+	return true;
+}
+
+function returnFalse() {
+	return false;
+}
+
+// Support: IE <=9 only
+// See #13393 for more info
+function safeActiveElement() {
+	try {
+		return document.activeElement;
+	} catch ( err ) { }
+}
+
+function on( elem, types, selector, data, fn, one ) {
+	var origFn, type;
+
+	// Types can be a map of types/handlers
+	if ( typeof types === "object" ) {
+
+		// ( types-Object, selector, data )
+		if ( typeof selector !== "string" ) {
+
+			// ( types-Object, data )
+			data = data || selector;
+			selector = undefined;
+		}
+		for ( type in types ) {
+			on( elem, type, selector, data, types[ type ], one );
+		}
+		return elem;
+	}
+
+	if ( data == null && fn == null ) {
+
+		// ( types, fn )
+		fn = selector;
+		data = selector = undefined;
+	} else if ( fn == null ) {
+		if ( typeof selector === "string" ) {
+
+			// ( types, selector, fn )
+			fn = data;
+			data = undefined;
+		} else {
+
+			// ( types, data, fn )
+			fn = data;
+			data = selector;
+			selector = undefined;
+		}
+	}
+	if ( fn === false ) {
+		fn = returnFalse;
+	} else if ( !fn ) {
+		return elem;
+	}
+
+	if ( one === 1 ) {
+		origFn = fn;
+		fn = function( event ) {
+
+			// Can use an empty set, since event contains the info
+			jQuery().off( event );
+			return origFn.apply( this, arguments );
+		};
+
+		// Use same guid so caller can remove using origFn
+		fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ );
+	}
+	return elem.each( function() {
+		jQuery.event.add( this, types, fn, data, selector );
+	} );
+}
+
+/*
+ * Helper functions for managing events -- not part of the public interface.
+ * Props to Dean Edwards' addEvent library for many of the ideas.
+ */
+jQuery.event = {
+
+	global: {},
+
+	add: function( elem, types, handler, data, selector ) {
+
+		var handleObjIn, eventHandle, tmp,
+			events, t, handleObj,
+			special, handlers, type, namespaces, origType,
+			elemData = dataPriv.get( elem );
+
+		// Don't attach events to noData or text/comment nodes (but allow plain objects)
+		if ( !elemData ) {
+			return;
+		}
+
+		// Caller can pass in an object of custom data in lieu of the handler
+		if ( handler.handler ) {
+			handleObjIn = handler;
+			handler = handleObjIn.handler;
+			selector = handleObjIn.selector;
+		}
+
+		// Ensure that invalid selectors throw exceptions at attach time
+		// Evaluate against documentElement in case elem is a non-element node (e.g., document)
+		if ( selector ) {
+			jQuery.find.matchesSelector( documentElement, selector );
+		}
+
+		// Make sure that the handler has a unique ID, used to find/remove it later
+		if ( !handler.guid ) {
+			handler.guid = jQuery.guid++;
+		}
+
+		// Init the element's event structure and main handler, if this is the first
+		if ( !( events = elemData.events ) ) {
+			events = elemData.events = {};
+		}
+		if ( !( eventHandle = elemData.handle ) ) {
+			eventHandle = elemData.handle = function( e ) {
+
+				// Discard the second event of a jQuery.event.trigger() and
+				// when an event is called after a page has unloaded
+				return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?
+					jQuery.event.dispatch.apply( elem, arguments ) : undefined;
+			};
+		}
+
+		// Handle multiple events separated by a space
+		types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
+		t = types.length;
+		while ( t-- ) {
+			tmp = rtypenamespace.exec( types[ t ] ) || [];
+			type = origType = tmp[ 1 ];
+			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();
+
+			// There *must* be a type, no attaching namespace-only handlers
+			if ( !type ) {
+				continue;
+			}
+
+			// If event changes its type, use the special event handlers for the changed type
+			special = jQuery.event.special[ type ] || {};
+
+			// If selector defined, determine special event api type, otherwise given type
+			type = ( selector ? special.delegateType : special.bindType ) || type;
+
+			// Update special based on newly reset type
+			special = jQuery.event.special[ type ] || {};
+
+			// handleObj is passed to all event handlers
+			handleObj = jQuery.extend( {
+				type: type,
+				origType: origType,
+				data: data,
+				handler: handler,
+				guid: handler.guid,
+				selector: selector,
+				needsContext: selector && jQuery.expr.match.needsContext.test( selector ),
+				namespace: namespaces.join( "." )
+			}, handleObjIn );
+
+			// Init the event handler queue if we're the first
+			if ( !( handlers = events[ type ] ) ) {
+				handlers = events[ type ] = [];
+				handlers.delegateCount = 0;
+
+				// Only use addEventListener if the special events handler returns false
+				if ( !special.setup ||
+					special.setup.call( elem, data, namespaces, eventHandle ) === false ) {
+
+					if ( elem.addEventListener ) {
+						elem.addEventListener( type, eventHandle );
+					}
+				}
+			}
+
+			if ( special.add ) {
+				special.add.call( elem, handleObj );
+
+				if ( !handleObj.handler.guid ) {
+					handleObj.handler.guid = handler.guid;
+				}
+			}
+
+			// Add to the element's handler list, delegates in front
+			if ( selector ) {
+				handlers.splice( handlers.delegateCount++, 0, handleObj );
+			} else {
+				handlers.push( handleObj );
+			}
+
+			// Keep track of which events have ever been used, for event optimization
+			jQuery.event.global[ type ] = true;
+		}
+
+	},
+
+	// Detach an event or set of events from an element
+	remove: function( elem, types, handler, selector, mappedTypes ) {
+
+		var j, origCount, tmp,
+			events, t, handleObj,
+			special, handlers, type, namespaces, origType,
+			elemData = dataPriv.hasData( elem ) && dataPriv.get( elem );
+
+		if ( !elemData || !( events = elemData.events ) ) {
+			return;
+		}
+
+		// Once for each type.namespace in types; type may be omitted
+		types = ( types || "" ).match( rnothtmlwhite ) || [ "" ];
+		t = types.length;
+		while ( t-- ) {
+			tmp = rtypenamespace.exec( types[ t ] ) || [];
+			type = origType = tmp[ 1 ];
+			namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort();
+
+			// Unbind all events (on this namespace, if provided) for the element
+			if ( !type ) {
+				for ( type in events ) {
+					jQuery.event.remove( elem, type + types[ t ], handler, selector, true );
+				}
+				continue;
+			}
+
+			special = jQuery.event.special[ type ] || {};
+			type = ( selector ? special.delegateType : special.bindType ) || type;
+			handlers = events[ type ] || [];
+			tmp = tmp[ 2 ] &&
+				new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" );
+
+			// Remove matching events
+			origCount = j = handlers.length;
+			while ( j-- ) {
+				handleObj = handlers[ j ];
+
+				if ( ( mappedTypes || origType === handleObj.origType ) &&
+					( !handler || handler.guid === handleObj.guid ) &&
+					( !tmp || tmp.test( handleObj.namespace ) ) &&
+					( !selector || selector === handleObj.selector ||
+						selector === "**" && handleObj.selector ) ) {
+					handlers.splice( j, 1 );
+
+					if ( handleObj.selector ) {
+						handlers.delegateCount--;
+					}
+					if ( special.remove ) {
+						special.remove.call( elem, handleObj );
+					}
+				}
+			}
+
+			// Remove generic event handler if we removed something and no more handlers exist
+			// (avoids potential for endless recursion during removal of special event handlers)
+			if ( origCount && !handlers.length ) {
+				if ( !special.teardown ||
+					special.teardown.call( elem, namespaces, elemData.handle ) === false ) {
+
+					jQuery.removeEvent( elem, type, elemData.handle );
+				}
+
+				delete events[ type ];
+			}
+		}
+
+		// Remove data and the expando if it's no longer used
+		if ( jQuery.isEmptyObject( events ) ) {
+			dataPriv.remove( elem, "handle events" );
+		}
+	},
+
+	dispatch: function( nativeEvent ) {
+
+		// Make a writable jQuery.Event from the native event object
+		var event = jQuery.event.fix( nativeEvent );
+
+		var i, j, ret, matched, handleObj, handlerQueue,
+			args = new Array( arguments.length ),
+			handlers = ( dataPriv.get( this, "events" ) || {} )[ event.type ] || [],
+			special = jQuery.event.special[ event.type ] || {};
+
+		// Use the fix-ed jQuery.Event rather than the (read-only) native event
+		args[ 0 ] = event;
+
+		for ( i = 1; i < arguments.length; i++ ) {
+			args[ i ] = arguments[ i ];
+		}
+
+		event.delegateTarget = this;
+
+		// Call the preDispatch hook for the mapped type, and let it bail if desired
+		if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) {
+			return;
+		}
+
+		// Determine handlers
+		handlerQueue = jQuery.event.handlers.call( this, event, handlers );
+
+		// Run delegates first; they may want to stop propagation beneath us
+		i = 0;
+		while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) {
+			event.currentTarget = matched.elem;
+
+			j = 0;
+			while ( ( handleObj = matched.handlers[ j++ ] ) &&
+				!event.isImmediatePropagationStopped() ) {
+
+				// Triggered event must either 1) have no namespace, or 2) have namespace(s)
+				// a subset or equal to those in the bound event (both can have no namespace).
+				if ( !event.rnamespace || event.rnamespace.test( handleObj.namespace ) ) {
+
+					event.handleObj = handleObj;
+					event.data = handleObj.data;
+
+					ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle ||
+						handleObj.handler ).apply( matched.elem, args );
+
+					if ( ret !== undefined ) {
+						if ( ( event.result = ret ) === false ) {
+							event.preventDefault();
+							event.stopPropagation();
+						}
+					}
+				}
+			}
+		}
+
+		// Call the postDispatch hook for the mapped type
+		if ( special.postDispatch ) {
+			special.postDispatch.call( this, event );
+		}
+
+		return event.result;
+	},
+
+	handlers: function( event, handlers ) {
+		var i, handleObj, sel, matchedHandlers, matchedSelectors,
+			handlerQueue = [],
+			delegateCount = handlers.delegateCount,
+			cur = event.target;
+
+		// Find delegate handlers
+		if ( delegateCount &&
+
+			// Support: IE <=9
+			// Black-hole SVG <use> instance trees (trac-13180)
+			cur.nodeType &&
+
+			// Support: Firefox <=42
+			// Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)
+			// https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click
+			// Support: IE 11 only
+			// ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343)
+			!( event.type === "click" && event.button >= 1 ) ) {
+
+			for ( ; cur !== this; cur = cur.parentNode || this ) {
+
+				// Don't check non-elements (#13208)
+				// Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
+				if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) {
+					matchedHandlers = [];
+					matchedSelectors = {};
+					for ( i = 0; i < delegateCount; i++ ) {
+						handleObj = handlers[ i ];
+
+						// Don't conflict with Object.prototype properties (#13203)
+						sel = handleObj.selector + " ";
+
+						if ( matchedSelectors[ sel ] === undefined ) {
+							matchedSelectors[ sel ] = handleObj.needsContext ?
+								jQuery( sel, this ).index( cur ) > -1 :
+								jQuery.find( sel, this, null, [ cur ] ).length;
+						}
+						if ( matchedSelectors[ sel ] ) {
+							matchedHandlers.push( handleObj );
+						}
+					}
+					if ( matchedHandlers.length ) {
+						handlerQueue.push( { elem: cur, handlers: matchedHandlers } );
+					}
+				}
+			}
+		}
+
+		// Add the remaining (directly-bound) handlers
+		cur = this;
+		if ( delegateCount < handlers.length ) {
+			handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } );
+		}
+
+		return handlerQueue;
+	},
+
+	addProp: function( name, hook ) {
+		Object.defineProperty( jQuery.Event.prototype, name, {
+			enumerable: true,
+			configurable: true,
+
+			get: jQuery.isFunction( hook ) ?
+				function() {
+					if ( this.originalEvent ) {
+							return hook( this.originalEvent );
+					}
+				} :
+				function() {
+					if ( this.originalEvent ) {
+							return this.originalEvent[ name ];
+					}
+				},
+
+			set: function( value ) {
+				Object.defineProperty( this, name, {
+					enumerable: true,
+					configurable: true,
+					writable: true,
+					value: value
+				} );
+			}
+		} );
+	},
+
+	fix: function( originalEvent ) {
+		return originalEvent[ jQuery.expando ] ?
+			originalEvent :
+			new jQuery.Event( originalEvent );
+	},
+
+	special: {
+		load: {
+
+			// Prevent triggered image.load events from bubbling to window.load
+			noBubble: true
+		},
+		focus: {
+
+			// Fire native event if possible so blur/focus sequence is correct
+			trigger: function() {
+				if ( this !== safeActiveElement() && this.focus ) {
+					this.focus();
+					return false;
+				}
+			},
+			delegateType: "focusin"
+		},
+		blur: {
+			trigger: function() {
+				if ( this === safeActiveElement() && this.blur ) {
+					this.blur();
+					return false;
+				}
+			},
+			delegateType: "focusout"
+		},
+		click: {
+
+			// For checkbox, fire native event so checked state will be right
+			trigger: function() {
+				if ( this.type === "checkbox" && this.click && nodeName( this, "input" ) ) {
+					this.click();
+					return false;
+				}
+			},
+
+			// For cross-browser consistency, don't fire native .click() on links
+			_default: function( event ) {
+				return nodeName( event.target, "a" );
+			}
+		},
+
+		beforeunload: {
+			postDispatch: function( event ) {
+
+				// Support: Firefox 20+
+				// Firefox doesn't alert if the returnValue field is not set.
+				if ( event.result !== undefined && event.originalEvent ) {
+					event.originalEvent.returnValue = event.result;
+				}
+			}
+		}
+	}
+};
+
+jQuery.removeEvent = function( elem, type, handle ) {
+
+	// This "if" is needed for plain objects
+	if ( elem.removeEventListener ) {
+		elem.removeEventListener( type, handle );
+	}
+};
+
+jQuery.Event = function( src, props ) {
+
+	// Allow instantiation without the 'new' keyword
+	if ( !( this instanceof jQuery.Event ) ) {
+		return new jQuery.Event( src, props );
+	}
+
+	// Event object
+	if ( src && src.type ) {
+		this.originalEvent = src;
+		this.type = src.type;
+
+		// Events bubbling up the document may have been marked as prevented
+		// by a handler lower down the tree; reflect the correct value.
+		this.isDefaultPrevented = src.defaultPrevented ||
+				src.defaultPrevented === undefined &&
+
+				// Support: Android <=2.3 only
+				src.returnValue === false ?
+			returnTrue :
+			returnFalse;
+
+		// Create target properties
+		// Support: Safari <=6 - 7 only
+		// Target should not be a text node (#504, #13143)
+		this.target = ( src.target && src.target.nodeType === 3 ) ?
+			src.target.parentNode :
+			src.target;
+
+		this.currentTarget = src.currentTarget;
+		this.relatedTarget = src.relatedTarget;
+
+	// Event type
+	} else {
+		this.type = src;
+	}
+
+	// Put explicitly provided properties onto the event object
+	if ( props ) {
+		jQuery.extend( this, props );
+	}
+
+	// Create a timestamp if incoming event doesn't have one
+	this.timeStamp = src && src.timeStamp || jQuery.now();
+
+	// Mark it as fixed
+	this[ jQuery.expando ] = true;
+};
+
+// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
+// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
+jQuery.Event.prototype = {
+	constructor: jQuery.Event,
+	isDefaultPrevented: returnFalse,
+	isPropagationStopped: returnFalse,
+	isImmediatePropagationStopped: returnFalse,
+	isSimulated: false,
+
+	preventDefault: function() {
+		var e = this.originalEvent;
+
+		this.isDefaultPrevented = returnTrue;
+
+		if ( e && !this.isSimulated ) {
+			e.preventDefault();
+		}
+	},
+	stopPropagation: function() {
+		var e = this.originalEvent;
+
+		this.isPropagationStopped = returnTrue;
+
+		if ( e && !this.isSimulated ) {
+			e.stopPropagation();
+		}
+	},
+	stopImmediatePropagation: function() {
+		var e = this.originalEvent;
+
+		this.isImmediatePropagationStopped = returnTrue;
+
+		if ( e && !this.isSimulated ) {
+			e.stopImmediatePropagation();
+		}
+
+		this.stopPropagation();
+	}
+};
+
+// Includes all common event props including KeyEvent and MouseEvent specific props
+jQuery.each( {
+	altKey: true,
+	bubbles: true,
+	cancelable: true,
+	changedTouches: true,
+	ctrlKey: true,
+	detail: true,
+	eventPhase: true,
+	metaKey: true,
+	pageX: true,
+	pageY: true,
+	shiftKey: true,
+	view: true,
+	"char": true,
+	charCode: true,
+	key: true,
+	keyCode: true,
+	button: true,
+	buttons: true,
+	clientX: true,
+	clientY: true,
+	offsetX: true,
+	offsetY: true,
+	pointerId: true,
+	pointerType: true,
+	screenX: true,
+	screenY: true,
+	targetTouches: true,
+	toElement: true,
+	touches: true,
+
+	which: function( event ) {
+		var button = event.button;
+
+		// Add which for key events
+		if ( event.which == null && rkeyEvent.test( event.type ) ) {
+			return event.charCode != null ? event.charCode : event.keyCode;
+		}
+
+		// Add which for click: 1 === left; 2 === middle; 3 === right
+		if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) {
+			if ( button & 1 ) {
+				return 1;
+			}
+
+			if ( button & 2 ) {
+				return 3;
+			}
+
+			if ( button & 4 ) {
+				return 2;
+			}
+
+			return 0;
+		}
+
+		return event.which;
+	}
+}, jQuery.event.addProp );
+
+// Create mouseenter/leave events using mouseover/out and event-time checks
+// so that event delegation works in jQuery.
+// Do the same for pointerenter/pointerleave and pointerover/pointerout
+//
+// Support: Safari 7 only
+// Safari sends mouseenter too often; see:
+// https://bugs.chromium.org/p/chromium/issues/detail?id=470258
+// for the description of the bug (it existed in older Chrome versions as well).
+jQuery.each( {
+	mouseenter: "mouseover",
+	mouseleave: "mouseout",
+	pointerenter: "pointerover",
+	pointerleave: "pointerout"
+}, function( orig, fix ) {
+	jQuery.event.special[ orig ] = {
+		delegateType: fix,
+		bindType: fix,
+
+		handle: function( event ) {
+			var ret,
+				target = this,
+				related = event.relatedTarget,
+				handleObj = event.handleObj;
+
+			// For mouseenter/leave call the handler if related is outside the target.
+			// NB: No relatedTarget if the mouse left/entered the browser window
+			if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) {
+				event.type = handleObj.origType;
+				ret = handleObj.handler.apply( this, arguments );
+				event.type = fix;
+			}
+			return ret;
+		}
+	};
+} );
+
+jQuery.fn.extend( {
+
+	on: function( types, selector, data, fn ) {
+		return on( this, types, selector, data, fn );
+	},
+	one: function( types, selector, data, fn ) {
+		return on( this, types, selector, data, fn, 1 );
+	},
+	off: function( types, selector, fn ) {
+		var handleObj, type;
+		if ( types && types.preventDefault && types.handleObj ) {
+
+			// ( event )  dispatched jQuery.Event
+			handleObj = types.handleObj;
+			jQuery( types.delegateTarget ).off(
+				handleObj.namespace ?
+					handleObj.origType + "." + handleObj.namespace :
+					handleObj.origType,
+				handleObj.selector,
+				handleObj.handler
+			);
+			return this;
+		}
+		if ( typeof types === "object" ) {
+
+			// ( types-object [, selector] )
+			for ( type in types ) {
+				this.off( type, selector, types[ type ] );
+			}
+			return this;
+		}
+		if ( selector === false || typeof selector === "function" ) {
+
+			// ( types [, fn] )
+			fn = selector;
+			selector = undefined;
+		}
+		if ( fn === false ) {
+			fn = returnFalse;
+		}
+		return this.each( function() {
+			jQuery.event.remove( this, types, fn, selector );
+		} );
+	}
+} );
+
+
+var
+
+	/* eslint-disable max-len */
+
+	// See https://github.com/eslint/eslint/issues/3229
+	rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\/\0>\x20\t\r\n\f]*)[^>]*)\/>/gi,
+
+	/* eslint-enable */
+
+	// Support: IE <=10 - 11, Edge 12 - 13
+	// In IE/Edge using regex groups here causes severe slowdowns.
+	// See https://connect.microsoft.com/IE/feedback/details/1736512/
+	rnoInnerhtml = /<script|<style|<link/i,
+
+	// checked="checked" or checked
+	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
+	rscriptTypeMasked = /^true\/(.*)/,
+	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;
+
+// Prefer a tbody over its parent table for containing new rows
+function manipulationTarget( elem, content ) {
+	if ( nodeName( elem, "table" ) &&
+		nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) {
+
+		return jQuery( ">tbody", elem )[ 0 ] || elem;
+	}
+
+	return elem;
+}
+
+// Replace/restore the type attribute of script elements for safe DOM manipulation
+function disableScript( elem ) {
+	elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type;
+	return elem;
+}
+function restoreScript( elem ) {
+	var match = rscriptTypeMasked.exec( elem.type );
+
+	if ( match ) {
+		elem.type = match[ 1 ];
+	} else {
+		elem.removeAttribute( "type" );
+	}
+
+	return elem;
+}
+
+function cloneCopyEvent( src, dest ) {
+	var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;
+
+	if ( dest.nodeType !== 1 ) {
+		return;
+	}
+
+	// 1. Copy private data: events, handlers, etc.
+	if ( dataPriv.hasData( src ) ) {
+		pdataOld = dataPriv.access( src );
+		pdataCur = dataPriv.set( dest, pdataOld );
+		events = pdataOld.events;
+
+		if ( events ) {
+			delete pdataCur.handle;
+			pdataCur.events = {};
+
+			for ( type in events ) {
+				for ( i = 0, l = events[ type ].length; i < l; i++ ) {
+					jQuery.event.add( dest, type, events[ type ][ i ] );
+				}
+			}
+		}
+	}
+
+	// 2. Copy user data
+	if ( dataUser.hasData( src ) ) {
+		udataOld = dataUser.access( src );
+		udataCur = jQuery.extend( {}, udataOld );
+
+		dataUser.set( dest, udataCur );
+	}
+}
+
+// Fix IE bugs, see support tests
+function fixInput( src, dest ) {
+	var nodeName = dest.nodeName.toLowerCase();
+
+	// Fails to persist the checked state of a cloned checkbox or radio button.
+	if ( nodeName === "input" && rcheckableType.test( src.type ) ) {
+		dest.checked = src.checked;
+
+	// Fails to return the selected option to the default selected state when cloning options
+	} else if ( nodeName === "input" || nodeName === "textarea" ) {
+		dest.defaultValue = src.defaultValue;
+	}
+}
+
+function domManip( collection, args, callback, ignored ) {
+
+	// Flatten any nested arrays
+	args = concat.apply( [], args );
+
+	var fragment, first, scripts, hasScripts, node, doc,
+		i = 0,
+		l = collection.length,
+		iNoClone = l - 1,
+		value = args[ 0 ],
+		isFunction = jQuery.isFunction( value );
+
+	// We can't cloneNode fragments that contain checked, in WebKit
+	if ( isFunction ||
+			( l > 1 && typeof value === "string" &&
+				!support.checkClone && rchecked.test( value ) ) ) {
+		return collection.each( function( index ) {
+			var self = collection.eq( index );
+			if ( isFunction ) {
+				args[ 0 ] = value.call( this, index, self.html() );
+			}
+			domManip( self, args, callback, ignored );
+		} );
+	}
+
+	if ( l ) {
+		fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored );
+		first = fragment.firstChild;
+
+		if ( fragment.childNodes.length === 1 ) {
+			fragment = first;
+		}
+
+		// Require either new content or an interest in ignored elements to invoke the callback
+		if ( first || ignored ) {
+			scripts = jQuery.map( getAll( fragment, "script" ), disableScript );
+			hasScripts = scripts.length;
+
+			// Use the original fragment for the last item
+			// instead of the first because it can end up
+			// being emptied incorrectly in certain situations (#8070).
+			for ( ; i < l; i++ ) {
+				node = fragment;
+
+				if ( i !== iNoClone ) {
+					node = jQuery.clone( node, true, true );
+
+					// Keep references to cloned scripts for later restoration
+					if ( hasScripts ) {
+
+						// Support: Android <=4.0 only, PhantomJS 1 only
+						// push.apply(_, arraylike) throws on ancient WebKit
+						jQuery.merge( scripts, getAll( node, "script" ) );
+					}
+				}
+
+				callback.call( collection[ i ], node, i );
+			}
+
+			if ( hasScripts ) {
+				doc = scripts[ scripts.length - 1 ].ownerDocument;
+
+				// Reenable scripts
+				jQuery.map( scripts, restoreScript );
+
+				// Evaluate executable scripts on first document insertion
+				for ( i = 0; i < hasScripts; i++ ) {
+					node = scripts[ i ];
+					if ( rscriptType.test( node.type || "" ) &&
+						!dataPriv.access( node, "globalEval" ) &&
+						jQuery.contains( doc, node ) ) {
+
+						if ( node.src ) {
+
+							// Optional AJAX dependency, but won't run scripts if not present
+							if ( jQuery._evalUrl ) {
+								jQuery._evalUrl( node.src );
+							}
+						} else {
+							DOMEval( node.textContent.replace( rcleanScript, "" ), doc );
+						}
+					}
+				}
+			}
+		}
+	}
+
+	return collection;
+}
+
+function remove( elem, selector, keepData ) {
+	var node,
+		nodes = selector ? jQuery.filter( selector, elem ) : elem,
+		i = 0;
+
+	for ( ; ( node = nodes[ i ] ) != null; i++ ) {
+		if ( !keepData && node.nodeType === 1 ) {
+			jQuery.cleanData( getAll( node ) );
+		}
+
+		if ( node.parentNode ) {
+			if ( keepData && jQuery.contains( node.ownerDocument, node ) ) {
+				setGlobalEval( getAll( node, "script" ) );
+			}
+			node.parentNode.removeChild( node );
+		}
+	}
+
+	return elem;
+}
+
+jQuery.extend( {
+	htmlPrefilter: function( html ) {
+		return html.replace( rxhtmlTag, "<$1></$2>" );
+	},
+
+	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
+		var i, l, srcElements, destElements,
+			clone = elem.cloneNode( true ),
+			inPage = jQuery.contains( elem.ownerDocument, elem );
+
+		// Fix IE cloning issues
+		if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&
+				!jQuery.isXMLDoc( elem ) ) {
+
+			// We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2
+			destElements = getAll( clone );
+			srcElements = getAll( elem );
+
+			for ( i = 0, l = srcElements.length; i < l; i++ ) {
+				fixInput( srcElements[ i ], destElements[ i ] );
+			}
+		}
+
+		// Copy the events from the original to the clone
+		if ( dataAndEvents ) {
+			if ( deepDataAndEvents ) {
+				srcElements = srcElements || getAll( elem );
+				destElements = destElements || getAll( clone );
+
+				for ( i = 0, l = srcElements.length; i < l; i++ ) {
+					cloneCopyEvent( srcElements[ i ], destElements[ i ] );
+				}
+			} else {
+				cloneCopyEvent( elem, clone );
+			}
+		}
+
+		// Preserve script evaluation history
+		destElements = getAll( clone, "script" );
+		if ( destElements.length > 0 ) {
+			setGlobalEval( destElements, !inPage && getAll( elem, "script" ) );
+		}
+
+		// Return the cloned set
+		return clone;
+	},
+
+	cleanData: function( elems ) {
+		var data, elem, type,
+			special = jQuery.event.special,
+			i = 0;
+
+		for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) {
+			if ( acceptData( elem ) ) {
+				if ( ( data = elem[ dataPriv.expando ] ) ) {
+					if ( data.events ) {
+						for ( type in data.events ) {
+							if ( special[ type ] ) {
+								jQuery.event.remove( elem, type );
+
+							// This is a shortcut to avoid jQuery.event.remove's overhead
+							} else {
+								jQuery.removeEvent( elem, type, data.handle );
+							}
+						}
+					}
+
+					// Support: Chrome <=35 - 45+
+					// Assign undefined instead of using delete, see Data#remove
+					elem[ dataPriv.expando ] = undefined;
+				}
+				if ( elem[ dataUser.expando ] ) {
+
+					// Support: Chrome <=35 - 45+
+					// Assign undefined instead of using delete, see Data#remove
+					elem[ dataUser.expando ] = undefined;
+				}
+			}
+		}
+	}
+} );
+
+jQuery.fn.extend( {
+	detach: function( selector ) {
+		return remove( this, selector, true );
+	},
+
+	remove: function( selector ) {
+		return remove( this, selector );
+	},
+
+	text: function( value ) {
+		return access( this, function( value ) {
+			return value === undefined ?
+				jQuery.text( this ) :
+				this.empty().each( function() {
+					if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
+						this.textContent = value;
+					}
+				} );
+		}, null, value, arguments.length );
+	},
+
+	append: function() {
+		return domManip( this, arguments, function( elem ) {
+			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
+				var target = manipulationTarget( this, elem );
+				target.appendChild( elem );
+			}
+		} );
+	},
+
+	prepend: function() {
+		return domManip( this, arguments, function( elem ) {
+			if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) {
+				var target = manipulationTarget( this, elem );
+				target.insertBefore( elem, target.firstChild );
+			}
+		} );
+	},
+
+	before: function() {
+		return domManip( this, arguments, function( elem ) {
+			if ( this.parentNode ) {
+				this.parentNode.insertBefore( elem, this );
+			}
+		} );
+	},
+
+	after: function() {
+		return domManip( this, arguments, function( elem ) {
+			if ( this.parentNode ) {
+				this.parentNode.insertBefore( elem, this.nextSibling );
+			}
+		} );
+	},
+
+	empty: function() {
+		var elem,
+			i = 0;
+
+		for ( ; ( elem = this[ i ] ) != null; i++ ) {
+			if ( elem.nodeType === 1 ) {
+
+				// Prevent memory leaks
+				jQuery.cleanData( getAll( elem, false ) );
+
+				// Remove any remaining nodes
+				elem.textContent = "";
+			}
+		}
+
+		return this;
+	},
+
+	clone: function( dataAndEvents, deepDataAndEvents ) {
+		dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
+		deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;
+
+		return this.map( function() {
+			return jQuery.clone( this, dataAndEvents, deepDataAndEvents );
+		} );
+	},
+
+	html: function( value ) {
+		return access( this, function( value ) {
+			var elem = this[ 0 ] || {},
+				i = 0,
+				l = this.length;
+
+			if ( value === undefined && elem.nodeType === 1 ) {
+				return elem.innerHTML;
+			}
+
+			// See if we can take a shortcut and just use innerHTML
+			if ( typeof value === "string" && !rnoInnerhtml.test( value ) &&
+				!wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) {
+
+				value = jQuery.htmlPrefilter( value );
+
+				try {
+					for ( ; i < l; i++ ) {
+						elem = this[ i ] || {};
+
+						// Remove element nodes and prevent memory leaks
+						if ( elem.nodeType === 1 ) {
+							jQuery.cleanData( getAll( elem, false ) );
+							elem.innerHTML = value;
+						}
+					}
+
+					elem = 0;
+
+				// If using innerHTML throws an exception, use the fallback method
+				} catch ( e ) {}
+			}
+
+			if ( elem ) {
+				this.empty().append( value );
+			}
+		}, null, value, arguments.length );
+	},
+
+	replaceWith: function() {
+		var ignored = [];
+
+		// Make the changes, replacing each non-ignored context element with the new content
+		return domManip( this, arguments, function( elem ) {
+			var parent = this.parentNode;
+
+			if ( jQuery.inArray( this, ignored ) < 0 ) {
+				jQuery.cleanData( getAll( this ) );
+				if ( parent ) {
+					parent.replaceChild( elem, this );
+				}
+			}
+
+		// Force callback invocation
+		}, ignored );
+	}
+} );
+
+jQuery.each( {
+	appendTo: "append",
+	prependTo: "prepend",
+	insertBefore: "before",
+	insertAfter: "after",
+	replaceAll: "replaceWith"
+}, function( name, original ) {
+	jQuery.fn[ name ] = function( selector ) {
+		var elems,
+			ret = [],
+			insert = jQuery( selector ),
+			last = insert.length - 1,
+			i = 0;
+
+		for ( ; i <= last; i++ ) {
+			elems = i === last ? this : this.clone( true );
+			jQuery( insert[ i ] )[ original ]( elems );
+
+			// Support: Android <=4.0 only, PhantomJS 1 only
+			// .get() because push.apply(_, arraylike) throws on ancient WebKit
+			push.apply( ret, elems.get() );
+		}
+
+		return this.pushStack( ret );
+	};
+} );
+var rmargin = ( /^margin/ );
+
+var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );
+
+var getStyles = function( elem ) {
+
+		// Support: IE <=11 only, Firefox <=30 (#15098, #14150)
+		// IE throws on elements created in popups
+		// FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
+		var view = elem.ownerDocument.defaultView;
+
+		if ( !view || !view.opener ) {
+			view = window;
+		}
+
+		return view.getComputedStyle( elem );
+	};
+
+
+
+( function() {
+
+	// Executing both pixelPosition & boxSizingReliable tests require only one layout
+	// so they're executed at the same time to save the second computation.
+	function computeStyleTests() {
+
+		// This is a singleton, we need to execute it only once
+		if ( !div ) {
+			return;
+		}
+
+		div.style.cssText =
+			"box-sizing:border-box;" +
+			"position:relative;display:block;" +
+			"margin:auto;border:1px;padding:1px;" +
+			"top:1%;width:50%";
+		div.innerHTML = "";
+		documentElement.appendChild( container );
+
+		var divStyle = window.getComputedStyle( div );
+		pixelPositionVal = divStyle.top !== "1%";
+
+		// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
+		reliableMarginLeftVal = divStyle.marginLeft === "2px";
+		boxSizingReliableVal = divStyle.width === "4px";
+
+		// Support: Android 4.0 - 4.3 only
+		// Some styles come back with percentage values, even though they shouldn't
+		div.style.marginRight = "50%";
+		pixelMarginRightVal = divStyle.marginRight === "4px";
+
+		documentElement.removeChild( container );
+
+		// Nullify the div so it wouldn't be stored in the memory and
+		// it will also be a sign that checks already performed
+		div = null;
+	}
+
+	var pixelPositionVal, boxSizingReliableVal, pixelMarginRightVal, reliableMarginLeftVal,
+		container = document.createElement( "div" ),
+		div = document.createElement( "div" );
+
+	// Finish early in limited (non-browser) environments
+	if ( !div.style ) {
+		return;
+	}
+
+	// Support: IE <=9 - 11 only
+	// Style of cloned element affects source element cloned (#8908)
+	div.style.backgroundClip = "content-box";
+	div.cloneNode( true ).style.backgroundClip = "";
+	support.clearCloneStyle = div.style.backgroundClip === "content-box";
+
+	container.style.cssText = "border:0;width:8px;height:0;top:0;left:-9999px;" +
+		"padding:0;margin-top:1px;position:absolute";
+	container.appendChild( div );
+
+	jQuery.extend( support, {
+		pixelPosition: function() {
+			computeStyleTests();
+			return pixelPositionVal;
+		},
+		boxSizingReliable: function() {
+			computeStyleTests();
+			return boxSizingReliableVal;
+		},
+		pixelMarginRight: function() {
+			computeStyleTests();
+			return pixelMarginRightVal;
+		},
+		reliableMarginLeft: function() {
+			computeStyleTests();
+			return reliableMarginLeftVal;
+		}
+	} );
+} )();
+
+
+function curCSS( elem, name, computed ) {
+	var width, minWidth, maxWidth, ret,
+
+		// Support: Firefox 51+
+		// Retrieving style before computed somehow
+		// fixes an issue with getting wrong values
+		// on detached elements
+		style = elem.style;
+
+	computed = computed || getStyles( elem );
+
+	// getPropertyValue is needed for:
+	//   .css('filter') (IE 9 only, #12537)
+	//   .css('--customProperty) (#3144)
+	if ( computed ) {
+		ret = computed.getPropertyValue( name ) || computed[ name ];
+
+		if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
+			ret = jQuery.style( elem, name );
+		}
+
+		// A tribute to the "awesome hack by Dean Edwards"
+		// Android Browser returns percentage for some values,
+		// but width seems to be reliably pixels.
+		// This is against the CSSOM draft spec:
+		// https://drafts.csswg.org/cssom/#resolved-values
+		if ( !support.pixelMarginRight() && rnumnonpx.test( ret ) && rmargin.test( name ) ) {
+
+			// Remember the original values
+			width = style.width;
+			minWidth = style.minWidth;
+			maxWidth = style.maxWidth;
+
+			// Put in the new values to get a computed value out
+			style.minWidth = style.maxWidth = style.width = ret;
+			ret = computed.width;
+
+			// Revert the changed values
+			style.width = width;
+			style.minWidth = minWidth;
+			style.maxWidth = maxWidth;
+		}
+	}
+
+	return ret !== undefined ?
+
+		// Support: IE <=9 - 11 only
+		// IE returns zIndex value as an integer.
+		ret + "" :
+		ret;
+}
+
+
+function addGetHookIf( conditionFn, hookFn ) {
+
+	// Define the hook, we'll check on the first run if it's really needed.
+	return {
+		get: function() {
+			if ( conditionFn() ) {
+
+				// Hook not needed (or it's not possible to use it due
+				// to missing dependency), remove it.
+				delete this.get;
+				return;
+			}
+
+			// Hook needed; redefine it so that the support test is not executed again.
+			return ( this.get = hookFn ).apply( this, arguments );
+		}
+	};
+}
+
+
+var
+
+	// Swappable if display is none or starts with table
+	// except "table", "table-cell", or "table-caption"
+	// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
+	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
+	rcustomProp = /^--/,
+	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
+	cssNormalTransform = {
+		letterSpacing: "0",
+		fontWeight: "400"
+	},
+
+	cssPrefixes = [ "Webkit", "Moz", "ms" ],
+	emptyStyle = document.createElement( "div" ).style;
+
+// Return a css property mapped to a potentially vendor prefixed property
+function vendorPropName( name ) {
+
+	// Shortcut for names that are not vendor prefixed
+	if ( name in emptyStyle ) {
+		return name;
+	}
+
+	// Check for vendor prefixed names
+	var capName = name[ 0 ].toUpperCase() + name.slice( 1 ),
+		i = cssPrefixes.length;
+
+	while ( i-- ) {
+		name = cssPrefixes[ i ] + capName;
+		if ( name in emptyStyle ) {
+			return name;
+		}
+	}
+}
+
+// Return a property mapped along what jQuery.cssProps suggests or to
+// a vendor prefixed property.
+function finalPropName( name ) {
+	var ret = jQuery.cssProps[ name ];
+	if ( !ret ) {
+		ret = jQuery.cssProps[ name ] = vendorPropName( name ) || name;
+	}
+	return ret;
+}
+
+function setPositiveNumber( elem, value, subtract ) {
+
+	// Any relative (+/-) values have already been
+	// normalized at this point
+	var matches = rcssNum.exec( value );
+	return matches ?
+
+		// Guard against undefined "subtract", e.g., when used as in cssHooks
+		Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) :
+		value;
+}
+
+function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
+	var i,
+		val = 0;
+
+	// If we already have the right measurement, avoid augmentation
+	if ( extra === ( isBorderBox ? "border" : "content" ) ) {
+		i = 4;
+
+	// Otherwise initialize for horizontal or vertical properties
+	} else {
+		i = name === "width" ? 1 : 0;
+	}
+
+	for ( ; i < 4; i += 2 ) {
+
+		// Both box models exclude margin, so add it if we want it
+		if ( extra === "margin" ) {
+			val += jQuery.css( elem, extra + cssExpand[ i ], true, styles );
+		}
+
+		if ( isBorderBox ) {
+
+			// border-box includes padding, so remove it if we want content
+			if ( extra === "content" ) {
+				val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
+			}
+
+			// At this point, extra isn't border nor margin, so remove border
+			if ( extra !== "margin" ) {
+				val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
+			}
+		} else {
+
+			// At this point, extra isn't content, so add padding
+			val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
+
+			// At this point, extra isn't content nor padding, so add border
+			if ( extra !== "padding" ) {
+				val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
+			}
+		}
+	}
+
+	return val;
+}
+
+function getWidthOrHeight( elem, name, extra ) {
+
+	// Start with computed style
+	var valueIsBorderBox,
+		styles = getStyles( elem ),
+		val = curCSS( elem, name, styles ),
+		isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
+
+	// Computed unit is not pixels. Stop here and return.
+	if ( rnumnonpx.test( val ) ) {
+		return val;
+	}
+
+	// Check for style in case a browser which returns unreliable values
+	// for getComputedStyle silently falls back to the reliable elem.style
+	valueIsBorderBox = isBorderBox &&
+		( support.boxSizingReliable() || val === elem.style[ name ] );
+
+	// Fall back to offsetWidth/Height when value is "auto"
+	// This happens for inline elements with no explicit setting (gh-3571)
+	if ( val === "auto" ) {
+		val = elem[ "offset" + name[ 0 ].toUpperCase() + name.slice( 1 ) ];
+	}
+
+	// Normalize "", auto, and prepare for extra
+	val = parseFloat( val ) || 0;
+
+	// Use the active box-sizing model to add/subtract irrelevant styles
+	return ( val +
+		augmentWidthOrHeight(
+			elem,
+			name,
+			extra || ( isBorderBox ? "border" : "content" ),
+			valueIsBorderBox,
+			styles
+		)
+	) + "px";
+}
+
+jQuery.extend( {
+
+	// Add in style property hooks for overriding the default
+	// behavior of getting and setting a style property
+	cssHooks: {
+		opacity: {
+			get: function( elem, computed ) {
+				if ( computed ) {
+
+					// We should always get a number back from opacity
+					var ret = curCSS( elem, "opacity" );
+					return ret === "" ? "1" : ret;
+				}
+			}
+		}
+	},
+
+	// Don't automatically add "px" to these possibly-unitless properties
+	cssNumber: {
+		"animationIterationCount": true,
+		"columnCount": true,
+		"fillOpacity": true,
+		"flexGrow": true,
+		"flexShrink": true,
+		"fontWeight": true,
+		"lineHeight": true,
+		"opacity": true,
+		"order": true,
+		"orphans": true,
+		"widows": true,
+		"zIndex": true,
+		"zoom": true
+	},
+
+	// Add in properties whose names you wish to fix before
+	// setting or getting the value
+	cssProps: {
+		"float": "cssFloat"
+	},
+
+	// Get and set the style property on a DOM Node
+	style: function( elem, name, value, extra ) {
+
+		// Don't set styles on text and comment nodes
+		if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) {
+			return;
+		}
+
+		// Make sure that we're working with the right name
+		var ret, type, hooks,
+			origName = jQuery.camelCase( name ),
+			isCustomProp = rcustomProp.test( name ),
+			style = elem.style;
+
+		// Make sure that we're working with the right name. We don't
+		// want to query the value if it is a CSS custom property
+		// since they are user-defined.
+		if ( !isCustomProp ) {
+			name = finalPropName( origName );
+		}
+
+		// Gets hook for the prefixed version, then unprefixed version
+		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
+
+		// Check if we're setting a value
+		if ( value !== undefined ) {
+			type = typeof value;
+
+			// Convert "+=" or "-=" to relative numbers (#7345)
+			if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) {
+				value = adjustCSS( elem, name, ret );
+
+				// Fixes bug #9237
+				type = "number";
+			}
+
+			// Make sure that null and NaN values aren't set (#7116)
+			if ( value == null || value !== value ) {
+				return;
+			}
+
+			// If a number was passed in, add the unit (except for certain CSS properties)
+			if ( type === "number" ) {
+				value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" );
+			}
+
+			// background-* props affect original clone's values
+			if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) {
+				style[ name ] = "inherit";
+			}
+
+			// If a hook was provided, use that value, otherwise just set the specified value
+			if ( !hooks || !( "set" in hooks ) ||
+				( value = hooks.set( elem, value, extra ) ) !== undefined ) {
+
+				if ( isCustomProp ) {
+					style.setProperty( name, value );
+				} else {
+					style[ name ] = value;
+				}
+			}
+
+		} else {
+
+			// If a hook was provided get the non-computed value from there
+			if ( hooks && "get" in hooks &&
+				( ret = hooks.get( elem, false, extra ) ) !== undefined ) {
+
+				return ret;
+			}
+
+			// Otherwise just get the value from the style object
+			return style[ name ];
+		}
+	},
+
+	css: function( elem, name, extra, styles ) {
+		var val, num, hooks,
+			origName = jQuery.camelCase( name ),
+			isCustomProp = rcustomProp.test( name );
+
+		// Make sure that we're working with the right name. We don't
+		// want to modify the value if it is a CSS custom property
+		// since they are user-defined.
+		if ( !isCustomProp ) {
+			name = finalPropName( origName );
+		}
+
+		// Try prefixed name followed by the unprefixed name
+		hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ];
+
+		// If a hook was provided get the computed value from there
+		if ( hooks && "get" in hooks ) {
+			val = hooks.get( elem, true, extra );
+		}
+
+		// Otherwise, if a way to get the computed value exists, use that
+		if ( val === undefined ) {
+			val = curCSS( elem, name, styles );
+		}
+
+		// Convert "normal" to computed value
+		if ( val === "normal" && name in cssNormalTransform ) {
+			val = cssNormalTransform[ name ];
+		}
+
+		// Make numeric if forced or a qualifier was provided and val looks numeric
+		if ( extra === "" || extra ) {
+			num = parseFloat( val );
+			return extra === true || isFinite( num ) ? num || 0 : val;
+		}
+
+		return val;
+	}
+} );
+
+jQuery.each( [ "height", "width" ], function( i, name ) {
+	jQuery.cssHooks[ name ] = {
+		get: function( elem, computed, extra ) {
+			if ( computed ) {
+
+				// Certain elements can have dimension info if we invisibly show them
+				// but it must have a current display style that would benefit
+				return rdisplayswap.test( jQuery.css( elem, "display" ) ) &&
+
+					// Support: Safari 8+
+					// Table columns in Safari have non-zero offsetWidth & zero
+					// getBoundingClientRect().width unless display is changed.
+					// Support: IE <=11 only
+					// Running getBoundingClientRect on a disconnected node
+					// in IE throws an error.
+					( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?
+						swap( elem, cssShow, function() {
+							return getWidthOrHeight( elem, name, extra );
+						} ) :
+						getWidthOrHeight( elem, name, extra );
+			}
+		},
+
+		set: function( elem, value, extra ) {
+			var matches,
+				styles = extra && getStyles( elem ),
+				subtract = extra && augmentWidthOrHeight(
+					elem,
+					name,
+					extra,
+					jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
+					styles
+				);
+
+			// Convert to pixels if value adjustment is needed
+			if ( subtract && ( matches = rcssNum.exec( value ) ) &&
+				( matches[ 3 ] || "px" ) !== "px" ) {
+
+				elem.style[ name ] = value;
+				value = jQuery.css( elem, name );
+			}
+
+			return setPositiveNumber( elem, value, subtract );
+		}
+	};
+} );
+
+jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft,
+	function( elem, computed ) {
+		if ( computed ) {
+			return ( parseFloat( curCSS( elem, "marginLeft" ) ) ||
+				elem.getBoundingClientRect().left -
+					swap( elem, { marginLeft: 0 }, function() {
+						return elem.getBoundingClientRect().left;
+					} )
+				) + "px";
+		}
+	}
+);
+
+// These hooks are used by animate to expand properties
+jQuery.each( {
+	margin: "",
+	padding: "",
+	border: "Width"
+}, function( prefix, suffix ) {
+	jQuery.cssHooks[ prefix + suffix ] = {
+		expand: function( value ) {
+			var i = 0,
+				expanded = {},
+
+				// Assumes a single number if not a string
+				parts = typeof value === "string" ? value.split( " " ) : [ value ];
+
+			for ( ; i < 4; i++ ) {
+				expanded[ prefix + cssExpand[ i ] + suffix ] =
+					parts[ i ] || parts[ i - 2 ] || parts[ 0 ];
+			}
+
+			return expanded;
+		}
+	};
+
+	if ( !rmargin.test( prefix ) ) {
+		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
+	}
+} );
+
+jQuery.fn.extend( {
+	css: function( name, value ) {
+		return access( this, function( elem, name, value ) {
+			var styles, len,
+				map = {},
+				i = 0;
+
+			if ( Array.isArray( name ) ) {
+				styles = getStyles( elem );
+				len = name.length;
+
+				for ( ; i < len; i++ ) {
+					map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles );
+				}
+
+				return map;
+			}
+
+			return value !== undefined ?
+				jQuery.style( elem, name, value ) :
+				jQuery.css( elem, name );
+		}, name, value, arguments.length > 1 );
+	}
+} );
+
+
+function Tween( elem, options, prop, end, easing ) {
+	return new Tween.prototype.init( elem, options, prop, end, easing );
+}
+jQuery.Tween = Tween;
+
+Tween.prototype = {
+	constructor: Tween,
+	init: function( elem, options, prop, end, easing, unit ) {
+		this.elem = elem;
+		this.prop = prop;
+		this.easing = easing || jQuery.easing._default;
+		this.options = options;
+		this.start = this.now = this.cur();
+		this.end = end;
+		this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" );
+	},
+	cur: function() {
+		var hooks = Tween.propHooks[ this.prop ];
+
+		return hooks && hooks.get ?
+			hooks.get( this ) :
+			Tween.propHooks._default.get( this );
+	},
+	run: function( percent ) {
+		var eased,
+			hooks = Tween.propHooks[ this.prop ];
+
+		if ( this.options.duration ) {
+			this.pos = eased = jQuery.easing[ this.easing ](
+				percent, this.options.duration * percent, 0, 1, this.options.duration
+			);
+		} else {
+			this.pos = eased = percent;
+		}
+		this.now = ( this.end - this.start ) * eased + this.start;
+
+		if ( this.options.step ) {
+			this.options.step.call( this.elem, this.now, this );
+		}
+
+		if ( hooks && hooks.set ) {
+			hooks.set( this );
+		} else {
+			Tween.propHooks._default.set( this );
+		}
+		return this;
+	}
+};
+
+Tween.prototype.init.prototype = Tween.prototype;
+
+Tween.propHooks = {
+	_default: {
+		get: function( tween ) {
+			var result;
+
+			// Use a property on the element directly when it is not a DOM element,
+			// or when there is no matching style property that exists.
+			if ( tween.elem.nodeType !== 1 ||
+				tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) {
+				return tween.elem[ tween.prop ];
+			}
+
+			// Passing an empty string as a 3rd parameter to .css will automatically
+			// attempt a parseFloat and fallback to a string if the parse fails.
+			// Simple values such as "10px" are parsed to Float;
+			// complex values such as "rotate(1rad)" are returned as-is.
+			result = jQuery.css( tween.elem, tween.prop, "" );
+
+			// Empty strings, null, undefined and "auto" are converted to 0.
+			return !result || result === "auto" ? 0 : result;
+		},
+		set: function( tween ) {
+
+			// Use step hook for back compat.
+			// Use cssHook if its there.
+			// Use .style if available and use plain properties where available.
+			if ( jQuery.fx.step[ tween.prop ] ) {
+				jQuery.fx.step[ tween.prop ]( tween );
+			} else if ( tween.elem.nodeType === 1 &&
+				( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null ||
+					jQuery.cssHooks[ tween.prop ] ) ) {
+				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
+			} else {
+				tween.elem[ tween.prop ] = tween.now;
+			}
+		}
+	}
+};
+
+// Support: IE <=9 only
+// Panic based approach to setting things on disconnected nodes
+Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = {
+	set: function( tween ) {
+		if ( tween.elem.nodeType && tween.elem.parentNode ) {
+			tween.elem[ tween.prop ] = tween.now;
+		}
+	}
+};
+
+jQuery.easing = {
+	linear: function( p ) {
+		return p;
+	},
+	swing: function( p ) {
+		return 0.5 - Math.cos( p * Math.PI ) / 2;
+	},
+	_default: "swing"
+};
+
+jQuery.fx = Tween.prototype.init;
+
+// Back compat <1.8 extension point
+jQuery.fx.step = {};
+
+
+
+
+var
+	fxNow, inProgress,
+	rfxtypes = /^(?:toggle|show|hide)$/,
+	rrun = /queueHooks$/;
+
+function schedule() {
+	if ( inProgress ) {
+		if ( document.hidden === false && window.requestAnimationFrame ) {
+			window.requestAnimationFrame( schedule );
+		} else {
+			window.setTimeout( schedule, jQuery.fx.interval );
+		}
+
+		jQuery.fx.tick();
+	}
+}
+
+// Animations created synchronously will run synchronously
+function createFxNow() {
+	window.setTimeout( function() {
+		fxNow = undefined;
+	} );
+	return ( fxNow = jQuery.now() );
+}
+
+// Generate parameters to create a standard animation
+function genFx( type, includeWidth ) {
+	var which,
+		i = 0,
+		attrs = { height: type };
+
+	// If we include width, step value is 1 to do all cssExpand values,
+	// otherwise step value is 2 to skip over Left and Right
+	includeWidth = includeWidth ? 1 : 0;
+	for ( ; i < 4; i += 2 - includeWidth ) {
+		which = cssExpand[ i ];
+		attrs[ "margin" + which ] = attrs[ "padding" + which ] = type;
+	}
+
+	if ( includeWidth ) {
+		attrs.opacity = attrs.width = type;
+	}
+
+	return attrs;
+}
+
+function createTween( value, prop, animation ) {
+	var tween,
+		collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ),
+		index = 0,
+		length = collection.length;
+	for ( ; index < length; index++ ) {
+		if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) {
+
+			// We're done with this property
+			return tween;
+		}
+	}
+}
+
+function defaultPrefilter( elem, props, opts ) {
+	var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display,
+		isBox = "width" in props || "height" in props,
+		anim = this,
+		orig = {},
+		style = elem.style,
+		hidden = elem.nodeType && isHiddenWithinTree( elem ),
+		dataShow = dataPriv.get( elem, "fxshow" );
+
+	// Queue-skipping animations hijack the fx hooks
+	if ( !opts.queue ) {
+		hooks = jQuery._queueHooks( elem, "fx" );
+		if ( hooks.unqueued == null ) {
+			hooks.unqueued = 0;
+			oldfire = hooks.empty.fire;
+			hooks.empty.fire = function() {
+				if ( !hooks.unqueued ) {
+					oldfire();
+				}
+			};
+		}
+		hooks.unqueued++;
+
+		anim.always( function() {
+
+			// Ensure the complete handler is called before this completes
+			anim.always( function() {
+				hooks.unqueued--;
+				if ( !jQuery.queue( elem, "fx" ).length ) {
+					hooks.empty.fire();
+				}
+			} );
+		} );
+	}
+
+	// Detect show/hide animations
+	for ( prop in props ) {
+		value = props[ prop ];
+		if ( rfxtypes.test( value ) ) {
+			delete props[ prop ];
+			toggle = toggle || value === "toggle";
+			if ( value === ( hidden ? "hide" : "show" ) ) {
+
+				// Pretend to be hidden if this is a "show" and
+				// there is still data from a stopped show/hide
+				if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) {
+					hidden = true;
+
+				// Ignore all other no-op show/hide data
+				} else {
+					continue;
+				}
+			}
+			orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop );
+		}
+	}
+
+	// Bail out if this is a no-op like .hide().hide()
+	propTween = !jQuery.isEmptyObject( props );
+	if ( !propTween && jQuery.isEmptyObject( orig ) ) {
+		return;
+	}
+
+	// Restrict "overflow" and "display" styles during box animations
+	if ( isBox && elem.nodeType === 1 ) {
+
+		// Support: IE <=9 - 11, Edge 12 - 13
+		// Record all 3 overflow attributes because IE does not infer the shorthand
+		// from identically-valued overflowX and overflowY
+		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];
+
+		// Identify a display type, preferring old show/hide data over the CSS cascade
+		restoreDisplay = dataShow && dataShow.display;
+		if ( restoreDisplay == null ) {
+			restoreDisplay = dataPriv.get( elem, "display" );
+		}
+		display = jQuery.css( elem, "display" );
+		if ( display === "none" ) {
+			if ( restoreDisplay ) {
+				display = restoreDisplay;
+			} else {
+
+				// Get nonempty value(s) by temporarily forcing visibility
+				showHide( [ elem ], true );
+				restoreDisplay = elem.style.display || restoreDisplay;
+				display = jQuery.css( elem, "display" );
+				showHide( [ elem ] );
+			}
+		}
+
+		// Animate inline elements as inline-block
+		if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) {
+			if ( jQuery.css( elem, "float" ) === "none" ) {
+
+				// Restore the original display value at the end of pure show/hide animations
+				if ( !propTween ) {
+					anim.done( function() {
+						style.display = restoreDisplay;
+					} );
+					if ( restoreDisplay == null ) {
+						display = style.display;
+						restoreDisplay = display === "none" ? "" : display;
+					}
+				}
+				style.display = "inline-block";
+			}
+		}
+	}
+
+	if ( opts.overflow ) {
+		style.overflow = "hidden";
+		anim.always( function() {
+			style.overflow = opts.overflow[ 0 ];
+			style.overflowX = opts.overflow[ 1 ];
+			style.overflowY = opts.overflow[ 2 ];
+		} );
+	}
+
+	// Implement show/hide animations
+	propTween = false;
+	for ( prop in orig ) {
+
+		// General show/hide setup for this element animation
+		if ( !propTween ) {
+			if ( dataShow ) {
+				if ( "hidden" in dataShow ) {
+					hidden = dataShow.hidden;
+				}
+			} else {
+				dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } );
+			}
+
+			// Store hidden/visible for toggle so `.stop().toggle()` "reverses"
+			if ( toggle ) {
+				dataShow.hidden = !hidden;
+			}
+
+			// Show elements before animating them
+			if ( hidden ) {
+				showHide( [ elem ], true );
+			}
+
+			/* eslint-disable no-loop-func */
+
+			anim.done( function() {
+
+			/* eslint-enable no-loop-func */
+
+				// The final step of a "hide" animation is actually hiding the element
+				if ( !hidden ) {
+					showHide( [ elem ] );
+				}
+				dataPriv.remove( elem, "fxshow" );
+				for ( prop in orig ) {
+					jQuery.style( elem, prop, orig[ prop ] );
+				}
+			} );
+		}
+
+		// Per-property setup
+		propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim );
+		if ( !( prop in dataShow ) ) {
+			dataShow[ prop ] = propTween.start;
+			if ( hidden ) {
+				propTween.end = propTween.start;
+				propTween.start = 0;
+			}
+		}
+	}
+}
+
+function propFilter( props, specialEasing ) {
+	var index, name, easing, value, hooks;
+
+	// camelCase, specialEasing and expand cssHook pass
+	for ( index in props ) {
+		name = jQuery.camelCase( index );
+		easing = specialEasing[ name ];
+		value = props[ index ];
+		if ( Array.isArray( value ) ) {
+			easing = value[ 1 ];
+			value = props[ index ] = value[ 0 ];
+		}
+
+		if ( index !== name ) {
+			props[ name ] = value;
+			delete props[ index ];
+		}
+
+		hooks = jQuery.cssHooks[ name ];
+		if ( hooks && "expand" in hooks ) {
+			value = hooks.expand( value );
+			delete props[ name ];
+
+			// Not quite $.extend, this won't overwrite existing keys.
+			// Reusing 'index' because we have the correct "name"
+			for ( index in value ) {
+				if ( !( index in props ) ) {
+					props[ index ] = value[ index ];
+					specialEasing[ index ] = easing;
+				}
+			}
+		} else {
+			specialEasing[ name ] = easing;
+		}
+	}
+}
+
+function Animation( elem, properties, options ) {
+	var result,
+		stopped,
+		index = 0,
+		length = Animation.prefilters.length,
+		deferred = jQuery.Deferred().always( function() {
+
+			// Don't match elem in the :animated selector
+			delete tick.elem;
+		} ),
+		tick = function() {
+			if ( stopped ) {
+				return false;
+			}
+			var currentTime = fxNow || createFxNow(),
+				remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ),
+
+				// Support: Android 2.3 only
+				// Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497)
+				temp = remaining / animation.duration || 0,
+				percent = 1 - temp,
+				index = 0,
+				length = animation.tweens.length;
+
+			for ( ; index < length; index++ ) {
+				animation.tweens[ index ].run( percent );
+			}
+
+			deferred.notifyWith( elem, [ animation, percent, remaining ] );
+
+			// If there's more to do, yield
+			if ( percent < 1 && length ) {
+				return remaining;
+			}
+
+			// If this was an empty animation, synthesize a final progress notification
+			if ( !length ) {
+				deferred.notifyWith( elem, [ animation, 1, 0 ] );
+			}
+
+			// Resolve the animation and report its conclusion
+			deferred.resolveWith( elem, [ animation ] );
+			return false;
+		},
+		animation = deferred.promise( {
+			elem: elem,
+			props: jQuery.extend( {}, properties ),
+			opts: jQuery.extend( true, {
+				specialEasing: {},
+				easing: jQuery.easing._default
+			}, options ),
+			originalProperties: properties,
+			originalOptions: options,
+			startTime: fxNow || createFxNow(),
+			duration: options.duration,
+			tweens: [],
+			createTween: function( prop, end ) {
+				var tween = jQuery.Tween( elem, animation.opts, prop, end,
+						animation.opts.specialEasing[ prop ] || animation.opts.easing );
+				animation.tweens.push( tween );
+				return tween;
+			},
+			stop: function( gotoEnd ) {
+				var index = 0,
+
+					// If we are going to the end, we want to run all the tweens
+					// otherwise we skip this part
+					length = gotoEnd ? animation.tweens.length : 0;
+				if ( stopped ) {
+					return this;
+				}
+				stopped = true;
+				for ( ; index < length; index++ ) {
+					animation.tweens[ index ].run( 1 );
+				}
+
+				// Resolve when we played the last frame; otherwise, reject
+				if ( gotoEnd ) {
+					deferred.notifyWith( elem, [ animation, 1, 0 ] );
+					deferred.resolveWith( elem, [ animation, gotoEnd ] );
+				} else {
+					deferred.rejectWith( elem, [ animation, gotoEnd ] );
+				}
+				return this;
+			}
+		} ),
+		props = animation.props;
+
+	propFilter( props, animation.opts.specialEasing );
+
+	for ( ; index < length; index++ ) {
+		result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );
+		if ( result ) {
+			if ( jQuery.isFunction( result.stop ) ) {
+				jQuery._queueHooks( animation.elem, animation.opts.queue ).stop =
+					jQuery.proxy( result.stop, result );
+			}
+			return result;
+		}
+	}
+
+	jQuery.map( props, createTween, animation );
+
+	if ( jQuery.isFunction( animation.opts.start ) ) {
+		animation.opts.start.call( elem, animation );
+	}
+
+	// Attach callbacks from options
+	animation
+		.progress( animation.opts.progress )
+		.done( animation.opts.done, animation.opts.complete )
+		.fail( animation.opts.fail )
+		.always( animation.opts.always );
+
+	jQuery.fx.timer(
+		jQuery.extend( tick, {
+			elem: elem,
+			anim: animation,
+			queue: animation.opts.queue
+		} )
+	);
+
+	return animation;
+}
+
+jQuery.Animation = jQuery.extend( Animation, {
+
+	tweeners: {
+		"*": [ function( prop, value ) {
+			var tween = this.createTween( prop, value );
+			adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween );
+			return tween;
+		} ]
+	},
+
+	tweener: function( props, callback ) {
+		if ( jQuery.isFunction( props ) ) {
+			callback = props;
+			props = [ "*" ];
+		} else {
+			props = props.match( rnothtmlwhite );
+		}
+
+		var prop,
+			index = 0,
+			length = props.length;
+
+		for ( ; index < length; index++ ) {
+			prop = props[ index ];
+			Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || [];
+			Animation.tweeners[ prop ].unshift( callback );
+		}
+	},
+
+	prefilters: [ defaultPrefilter ],
+
+	prefilter: function( callback, prepend ) {
+		if ( prepend ) {
+			Animation.prefilters.unshift( callback );
+		} else {
+			Animation.prefilters.push( callback );
+		}
+	}
+} );
+
+jQuery.speed = function( speed, easing, fn ) {
+	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
+		complete: fn || !fn && easing ||
+			jQuery.isFunction( speed ) && speed,
+		duration: speed,
+		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
+	};
+
+	// Go to the end state if fx are off
+	if ( jQuery.fx.off ) {
+		opt.duration = 0;
+
+	} else {
+		if ( typeof opt.duration !== "number" ) {
+			if ( opt.duration in jQuery.fx.speeds ) {
+				opt.duration = jQuery.fx.speeds[ opt.duration ];
+
+			} else {
+				opt.duration = jQuery.fx.speeds._default;
+			}
+		}
+	}
+
+	// Normalize opt.queue - true/undefined/null -> "fx"
+	if ( opt.queue == null || opt.queue === true ) {
+		opt.queue = "fx";
+	}
+
+	// Queueing
+	opt.old = opt.complete;
+
+	opt.complete = function() {
+		if ( jQuery.isFunction( opt.old ) ) {
+			opt.old.call( this );
+		}
+
+		if ( opt.queue ) {
+			jQuery.dequeue( this, opt.queue );
+		}
+	};
+
+	return opt;
+};
+
+jQuery.fn.extend( {
+	fadeTo: function( speed, to, easing, callback ) {
+
+		// Show any hidden elements after setting opacity to 0
+		return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show()
+
+			// Animate to the value specified
+			.end().animate( { opacity: to }, speed, easing, callback );
+	},
+	animate: function( prop, speed, easing, callback ) {
+		var empty = jQuery.isEmptyObject( prop ),
+			optall = jQuery.speed( speed, easing, callback ),
+			doAnimation = function() {
+
+				// Operate on a copy of prop so per-property easing won't be lost
+				var anim = Animation( this, jQuery.extend( {}, prop ), optall );
+
+				// Empty animations, or finishing resolves immediately
+				if ( empty || dataPriv.get( this, "finish" ) ) {
+					anim.stop( true );
+				}
+			};
+			doAnimation.finish = doAnimation;
+
+		return empty || optall.queue === false ?
+			this.each( doAnimation ) :
+			this.queue( optall.queue, doAnimation );
+	},
+	stop: function( type, clearQueue, gotoEnd ) {
+		var stopQueue = function( hooks ) {
+			var stop = hooks.stop;
+			delete hooks.stop;
+			stop( gotoEnd );
+		};
+
+		if ( typeof type !== "string" ) {
+			gotoEnd = clearQueue;
+			clearQueue = type;
+			type = undefined;
+		}
+		if ( clearQueue && type !== false ) {
+			this.queue( type || "fx", [] );
+		}
+
+		return this.each( function() {
+			var dequeue = true,
+				index = type != null && type + "queueHooks",
+				timers = jQuery.timers,
+				data = dataPriv.get( this );
+
+			if ( index ) {
+				if ( data[ index ] && data[ index ].stop ) {
+					stopQueue( data[ index ] );
+				}
+			} else {
+				for ( index in data ) {
+					if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) {
+						stopQueue( data[ index ] );
+					}
+				}
+			}
+
+			for ( index = timers.length; index--; ) {
+				if ( timers[ index ].elem === this &&
+					( type == null || timers[ index ].queue === type ) ) {
+
+					timers[ index ].anim.stop( gotoEnd );
+					dequeue = false;
+					timers.splice( index, 1 );
+				}
+			}
+
+			// Start the next in the queue if the last step wasn't forced.
+			// Timers currently will call their complete callbacks, which
+			// will dequeue but only if they were gotoEnd.
+			if ( dequeue || !gotoEnd ) {
+				jQuery.dequeue( this, type );
+			}
+		} );
+	},
+	finish: function( type ) {
+		if ( type !== false ) {
+			type = type || "fx";
+		}
+		return this.each( function() {
+			var index,
+				data = dataPriv.get( this ),
+				queue = data[ type + "queue" ],
+				hooks = data[ type + "queueHooks" ],
+				timers = jQuery.timers,
+				length = queue ? queue.length : 0;
+
+			// Enable finishing flag on private data
+			data.finish = true;
+
+			// Empty the queue first
+			jQuery.queue( this, type, [] );
+
+			if ( hooks && hooks.stop ) {
+				hooks.stop.call( this, true );
+			}
+
+			// Look for any active animations, and finish them
+			for ( index = timers.length; index--; ) {
+				if ( timers[ index ].elem === this && timers[ index ].queue === type ) {
+					timers[ index ].anim.stop( true );
+					timers.splice( index, 1 );
+				}
+			}
+
+			// Look for any animations in the old queue and finish them
+			for ( index = 0; index < length; index++ ) {
+				if ( queue[ index ] && queue[ index ].finish ) {
+					queue[ index ].finish.call( this );
+				}
+			}
+
+			// Turn off finishing flag
+			delete data.finish;
+		} );
+	}
+} );
+
+jQuery.each( [ "toggle", "show", "hide" ], function( i, name ) {
+	var cssFn = jQuery.fn[ name ];
+	jQuery.fn[ name ] = function( speed, easing, callback ) {
+		return speed == null || typeof speed === "boolean" ?
+			cssFn.apply( this, arguments ) :
+			this.animate( genFx( name, true ), speed, easing, callback );
+	};
+} );
+
+// Generate shortcuts for custom animations
+jQuery.each( {
+	slideDown: genFx( "show" ),
+	slideUp: genFx( "hide" ),
+	slideToggle: genFx( "toggle" ),
+	fadeIn: { opacity: "show" },
+	fadeOut: { opacity: "hide" },
+	fadeToggle: { opacity: "toggle" }
+}, function( name, props ) {
+	jQuery.fn[ name ] = function( speed, easing, callback ) {
+		return this.animate( props, speed, easing, callback );
+	};
+} );
+
+jQuery.timers = [];
+jQuery.fx.tick = function() {
+	var timer,
+		i = 0,
+		timers = jQuery.timers;
+
+	fxNow = jQuery.now();
+
+	for ( ; i < timers.length; i++ ) {
+		timer = timers[ i ];
+
+		// Run the timer and safely remove it when done (allowing for external removal)
+		if ( !timer() && timers[ i ] === timer ) {
+			timers.splice( i--, 1 );
+		}
+	}
+
+	if ( !timers.length ) {
+		jQuery.fx.stop();
+	}
+	fxNow = undefined;
+};
+
+jQuery.fx.timer = function( timer ) {
+	jQuery.timers.push( timer );
+	jQuery.fx.start();
+};
+
+jQuery.fx.interval = 13;
+jQuery.fx.start = function() {
+	if ( inProgress ) {
+		return;
+	}
+
+	inProgress = true;
+	schedule();
+};
+
+jQuery.fx.stop = function() {
+	inProgress = null;
+};
+
+jQuery.fx.speeds = {
+	slow: 600,
+	fast: 200,
+
+	// Default speed
+	_default: 400
+};
+
+
+// Based off of the plugin by Clint Helfers, with permission.
+// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
+jQuery.fn.delay = function( time, type ) {
+	time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time;
+	type = type || "fx";
+
+	return this.queue( type, function( next, hooks ) {
+		var timeout = window.setTimeout( next, time );
+		hooks.stop = function() {
+			window.clearTimeout( timeout );
+		};
+	} );
+};
+
+
+( function() {
+	var input = document.createElement( "input" ),
+		select = document.createElement( "select" ),
+		opt = select.appendChild( document.createElement( "option" ) );
+
+	input.type = "checkbox";
+
+	// Support: Android <=4.3 only
+	// Default value for a checkbox should be "on"
+	support.checkOn = input.value !== "";
+
+	// Support: IE <=11 only
+	// Must access selectedIndex to make default options select
+	support.optSelected = opt.selected;
+
+	// Support: IE <=11 only
+	// An input loses its value after becoming a radio
+	input = document.createElement( "input" );
+	input.value = "t";
+	input.type = "radio";
+	support.radioValue = input.value === "t";
+} )();
+
+
+var boolHook,
+	attrHandle = jQuery.expr.attrHandle;
+
+jQuery.fn.extend( {
+	attr: function( name, value ) {
+		return access( this, jQuery.attr, name, value, arguments.length > 1 );
+	},
+
+	removeAttr: function( name ) {
+		return this.each( function() {
+			jQuery.removeAttr( this, name );
+		} );
+	}
+} );
+
+jQuery.extend( {
+	attr: function( elem, name, value ) {
+		var ret, hooks,
+			nType = elem.nodeType;
+
+		// Don't get/set attributes on text, comment and attribute nodes
+		if ( nType === 3 || nType === 8 || nType === 2 ) {
+			return;
+		}
+
+		// Fallback to prop when attributes are not supported
+		if ( typeof elem.getAttribute === "undefined" ) {
+			return jQuery.prop( elem, name, value );
+		}
+
+		// Attribute hooks are determined by the lowercase version
+		// Grab necessary hook if one is defined
+		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
+			hooks = jQuery.attrHooks[ name.toLowerCase() ] ||
+				( jQuery.expr.match.bool.test( name ) ? boolHook : undefined );
+		}
+
+		if ( value !== undefined ) {
+			if ( value === null ) {
+				jQuery.removeAttr( elem, name );
+				return;
+			}
+
+			if ( hooks && "set" in hooks &&
+				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
+				return ret;
+			}
+
+			elem.setAttribute( name, value + "" );
+			return value;
+		}
+
+		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
+			return ret;
+		}
+
+		ret = jQuery.find.attr( elem, name );
+
+		// Non-existent attributes return null, we normalize to undefined
+		return ret == null ? undefined : ret;
+	},
+
+	attrHooks: {
+		type: {
+			set: function( elem, value ) {
+				if ( !support.radioValue && value === "radio" &&
+					nodeName( elem, "input" ) ) {
+					var val = elem.value;
+					elem.setAttribute( "type", value );
+					if ( val ) {
+						elem.value = val;
+					}
+					return value;
+				}
+			}
+		}
+	},
+
+	removeAttr: function( elem, value ) {
+		var name,
+			i = 0,
+
+			// Attribute names can contain non-HTML whitespace characters
+			// https://html.spec.whatwg.org/multipage/syntax.html#attributes-2
+			attrNames = value && value.match( rnothtmlwhite );
+
+		if ( attrNames && elem.nodeType === 1 ) {
+			while ( ( name = attrNames[ i++ ] ) ) {
+				elem.removeAttribute( name );
+			}
+		}
+	}
+} );
+
+// Hooks for boolean attributes
+boolHook = {
+	set: function( elem, value, name ) {
+		if ( value === false ) {
+
+			// Remove boolean attributes when set to false
+			jQuery.removeAttr( elem, name );
+		} else {
+			elem.setAttribute( name, name );
+		}
+		return name;
+	}
+};
+
+jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
+	var getter = attrHandle[ name ] || jQuery.find.attr;
+
+	attrHandle[ name ] = function( elem, name, isXML ) {
+		var ret, handle,
+			lowercaseName = name.toLowerCase();
+
+		if ( !isXML ) {
+
+			// Avoid an infinite loop by temporarily removing this function from the getter
+			handle = attrHandle[ lowercaseName ];
+			attrHandle[ lowercaseName ] = ret;
+			ret = getter( elem, name, isXML ) != null ?
+				lowercaseName :
+				null;
+			attrHandle[ lowercaseName ] = handle;
+		}
+		return ret;
+	};
+} );
+
+
+
+
+var rfocusable = /^(?:input|select|textarea|button)$/i,
+	rclickable = /^(?:a|area)$/i;
+
+jQuery.fn.extend( {
+	prop: function( name, value ) {
+		return access( this, jQuery.prop, name, value, arguments.length > 1 );
+	},
+
+	removeProp: function( name ) {
+		return this.each( function() {
+			delete this[ jQuery.propFix[ name ] || name ];
+		} );
+	}
+} );
+
+jQuery.extend( {
+	prop: function( elem, name, value ) {
+		var ret, hooks,
+			nType = elem.nodeType;
+
+		// Don't get/set properties on text, comment and attribute nodes
+		if ( nType === 3 || nType === 8 || nType === 2 ) {
+			return;
+		}
+
+		if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
+
+			// Fix name and attach hooks
+			name = jQuery.propFix[ name ] || name;
+			hooks = jQuery.propHooks[ name ];
+		}
+
+		if ( value !== undefined ) {
+			if ( hooks && "set" in hooks &&
+				( ret = hooks.set( elem, value, name ) ) !== undefined ) {
+				return ret;
+			}
+
+			return ( elem[ name ] = value );
+		}
+
+		if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) {
+			return ret;
+		}
+
+		return elem[ name ];
+	},
+
+	propHooks: {
+		tabIndex: {
+			get: function( elem ) {
+
+				// Support: IE <=9 - 11 only
+				// elem.tabIndex doesn't always return the
+				// correct value when it hasn't been explicitly set
+				// https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
+				// Use proper attribute retrieval(#12072)
+				var tabindex = jQuery.find.attr( elem, "tabindex" );
+
+				if ( tabindex ) {
+					return parseInt( tabindex, 10 );
+				}
+
+				if (
+					rfocusable.test( elem.nodeName ) ||
+					rclickable.test( elem.nodeName ) &&
+					elem.href
+				) {
+					return 0;
+				}
+
+				return -1;
+			}
+		}
+	},
+
+	propFix: {
+		"for": "htmlFor",
+		"class": "className"
+	}
+} );
+
+// Support: IE <=11 only
+// Accessing the selectedIndex property
+// forces the browser to respect setting selected
+// on the option
+// The getter ensures a default option is selected
+// when in an optgroup
+// eslint rule "no-unused-expressions" is disabled for this code
+// since it considers such accessions noop
+if ( !support.optSelected ) {
+	jQuery.propHooks.selected = {
+		get: function( elem ) {
+
+			/* eslint no-unused-expressions: "off" */
+
+			var parent = elem.parentNode;
+			if ( parent && parent.parentNode ) {
+				parent.parentNode.selectedIndex;
+			}
+			return null;
+		},
+		set: function( elem ) {
+
+			/* eslint no-unused-expressions: "off" */
+
+			var parent = elem.parentNode;
+			if ( parent ) {
+				parent.selectedIndex;
+
+				if ( parent.parentNode ) {
+					parent.parentNode.selectedIndex;
+				}
+			}
+		}
+	};
+}
+
+jQuery.each( [
+	"tabIndex",
+	"readOnly",
+	"maxLength",
+	"cellSpacing",
+	"cellPadding",
+	"rowSpan",
+	"colSpan",
+	"useMap",
+	"frameBorder",
+	"contentEditable"
+], function() {
+	jQuery.propFix[ this.toLowerCase() ] = this;
+} );
+
+
+
+
+	// Strip and collapse whitespace according to HTML spec
+	// https://html.spec.whatwg.org/multipage/infrastructure.html#strip-and-collapse-whitespace
+	function stripAndCollapse( value ) {
+		var tokens = value.match( rnothtmlwhite ) || [];
+		return tokens.join( " " );
+	}
+
+
+function getClass( elem ) {
+	return elem.getAttribute && elem.getAttribute( "class" ) || "";
+}
+
+jQuery.fn.extend( {
+	addClass: function( value ) {
+		var classes, elem, cur, curValue, clazz, j, finalValue,
+			i = 0;
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each( function( j ) {
+				jQuery( this ).addClass( value.call( this, j, getClass( this ) ) );
+			} );
+		}
+
+		if ( typeof value === "string" && value ) {
+			classes = value.match( rnothtmlwhite ) || [];
+
+			while ( ( elem = this[ i++ ] ) ) {
+				curValue = getClass( elem );
+				cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );
+
+				if ( cur ) {
+					j = 0;
+					while ( ( clazz = classes[ j++ ] ) ) {
+						if ( cur.indexOf( " " + clazz + " " ) < 0 ) {
+							cur += clazz + " ";
+						}
+					}
+
+					// Only assign if different to avoid unneeded rendering.
+					finalValue = stripAndCollapse( cur );
+					if ( curValue !== finalValue ) {
+						elem.setAttribute( "class", finalValue );
+					}
+				}
+			}
+		}
+
+		return this;
+	},
+
+	removeClass: function( value ) {
+		var classes, elem, cur, curValue, clazz, j, finalValue,
+			i = 0;
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each( function( j ) {
+				jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );
+			} );
+		}
+
+		if ( !arguments.length ) {
+			return this.attr( "class", "" );
+		}
+
+		if ( typeof value === "string" && value ) {
+			classes = value.match( rnothtmlwhite ) || [];
+
+			while ( ( elem = this[ i++ ] ) ) {
+				curValue = getClass( elem );
+
+				// This expression is here for better compressibility (see addClass)
+				cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );
+
+				if ( cur ) {
+					j = 0;
+					while ( ( clazz = classes[ j++ ] ) ) {
+
+						// Remove *all* instances
+						while ( cur.indexOf( " " + clazz + " " ) > -1 ) {
+							cur = cur.replace( " " + clazz + " ", " " );
+						}
+					}
+
+					// Only assign if different to avoid unneeded rendering.
+					finalValue = stripAndCollapse( cur );
+					if ( curValue !== finalValue ) {
+						elem.setAttribute( "class", finalValue );
+					}
+				}
+			}
+		}
+
+		return this;
+	},
+
+	toggleClass: function( value, stateVal ) {
+		var type = typeof value;
+
+		if ( typeof stateVal === "boolean" && type === "string" ) {
+			return stateVal ? this.addClass( value ) : this.removeClass( value );
+		}
+
+		if ( jQuery.isFunction( value ) ) {
+			return this.each( function( i ) {
+				jQuery( this ).toggleClass(
+					value.call( this, i, getClass( this ), stateVal ),
+					stateVal
+				);
+			} );
+		}
+
+		return this.each( function() {
+			var className, i, self, classNames;
+
+			if ( type === "string" ) {
+
+				// Toggle individual class names
+				i = 0;
+				self = jQuery( this );
+				classNames = value.match( rnothtmlwhite ) || [];
+
+				while ( ( className = classNames[ i++ ] ) ) {
+
+					// Check each className given, space separated list
+					if ( self.hasClass( className ) ) {
+						self.removeClass( className );
+					} else {
+						self.addClass( className );
+					}
+				}
+
+			// Toggle whole class name
+			} else if ( value === undefined || type === "boolean" ) {
+				className = getClass( this );
+				if ( className ) {
+
+					// Store className if set
+					dataPriv.set( this, "__className__", className );
+				}
+
+				// If the element has a class name or if we're passed `false`,
+				// then remove the whole classname (if there was one, the above saved it).
+				// Otherwise bring back whatever was previously saved (if anything),
+				// falling back to the empty string if nothing was stored.
+				if ( this.setAttribute ) {
+					this.setAttribute( "class",
+						className || value === false ?
+						"" :
+						dataPriv.get( this, "__className__" ) || ""
+					);
+				}
+			}
+		} );
+	},
+
+	hasClass: function( selector ) {
+		var className, elem,
+			i = 0;
+
+		className = " " + selector + " ";
+		while ( ( elem = this[ i++ ] ) ) {
+			if ( elem.nodeType === 1 &&
+				( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) {
+					return true;
+			}
+		}
+
+		return false;
+	}
+} );
+
+
+
+
+var rreturn = /\r/g;
+
+jQuery.fn.extend( {
+	val: function( value ) {
+		var hooks, ret, isFunction,
+			elem = this[ 0 ];
+
+		if ( !arguments.length ) {
+			if ( elem ) {
+				hooks = jQuery.valHooks[ elem.type ] ||
+					jQuery.valHooks[ elem.nodeName.toLowerCase() ];
+
+				if ( hooks &&
+					"get" in hooks &&
+					( ret = hooks.get( elem, "value" ) ) !== undefined
+				) {
+					return ret;
+				}
+
+				ret = elem.value;
+
+				// Handle most common string cases
+				if ( typeof ret === "string" ) {
+					return ret.replace( rreturn, "" );
+				}
+
+				// Handle cases where value is null/undef or number
+				return ret == null ? "" : ret;
+			}
+
+			return;
+		}
+
+		isFunction = jQuery.isFunction( value );
+
+		return this.each( function( i ) {
+			var val;
+
+			if ( this.nodeType !== 1 ) {
+				return;
+			}
+
+			if ( isFunction ) {
+				val = value.call( this, i, jQuery( this ).val() );
+			} else {
+				val = value;
+			}
+
+			// Treat null/undefined as ""; convert numbers to string
+			if ( val == null ) {
+				val = "";
+
+			} else if ( typeof val === "number" ) {
+				val += "";
+
+			} else if ( Array.isArray( val ) ) {
+				val = jQuery.map( val, function( value ) {
+					return value == null ? "" : value + "";
+				} );
+			}
+
+			hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];
+
+			// If set returns undefined, fall back to normal setting
+			if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) {
+				this.value = val;
+			}
+		} );
+	}
+} );
+
+jQuery.extend( {
+	valHooks: {
+		option: {
+			get: function( elem ) {
+
+				var val = jQuery.find.attr( elem, "value" );
+				return val != null ?
+					val :
+
+					// Support: IE <=10 - 11 only
+					// option.text throws exceptions (#14686, #14858)
+					// Strip and collapse whitespace
+					// https://html.spec.whatwg.org/#strip-and-collapse-whitespace
+					stripAndCollapse( jQuery.text( elem ) );
+			}
+		},
+		select: {
+			get: function( elem ) {
+				var value, option, i,
+					options = elem.options,
+					index = elem.selectedIndex,
+					one = elem.type === "select-one",
+					values = one ? null : [],
+					max = one ? index + 1 : options.length;
+
+				if ( index < 0 ) {
+					i = max;
+
+				} else {
+					i = one ? index : 0;
+				}
+
+				// Loop through all the selected options
+				for ( ; i < max; i++ ) {
+					option = options[ i ];
+
+					// Support: IE <=9 only
+					// IE8-9 doesn't update selected after form reset (#2551)
+					if ( ( option.selected || i === index ) &&
+
+							// Don't return options that are disabled or in a disabled optgroup
+							!option.disabled &&
+							( !option.parentNode.disabled ||
+								!nodeName( option.parentNode, "optgroup" ) ) ) {
+
+						// Get the specific value for the option
+						value = jQuery( option ).val();
+
+						// We don't need an array for one selects
+						if ( one ) {
+							return value;
+						}
+
+						// Multi-Selects return an array
+						values.push( value );
+					}
+				}
+
+				return values;
+			},
+
+			set: function( elem, value ) {
+				var optionSet, option,
+					options = elem.options,
+					values = jQuery.makeArray( value ),
+					i = options.length;
+
+				while ( i-- ) {
+					option = options[ i ];
+
+					/* eslint-disable no-cond-assign */
+
+					if ( option.selected =
+						jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1
+					) {
+						optionSet = true;
+					}
+
+					/* eslint-enable no-cond-assign */
+				}
+
+				// Force browsers to behave consistently when non-matching value is set
+				if ( !optionSet ) {
+					elem.selectedIndex = -1;
+				}
+				return values;
+			}
+		}
+	}
+} );
+
+// Radios and checkboxes getter/setter
+jQuery.each( [ "radio", "checkbox" ], function() {
+	jQuery.valHooks[ this ] = {
+		set: function( elem, value ) {
+			if ( Array.isArray( value ) ) {
+				return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );
+			}
+		}
+	};
+	if ( !support.checkOn ) {
+		jQuery.valHooks[ this ].get = function( elem ) {
+			return elem.getAttribute( "value" ) === null ? "on" : elem.value;
+		};
+	}
+} );
+
+
+
+
+// Return jQuery for attributes-only inclusion
+
+
+var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/;
+
+jQuery.extend( jQuery.event, {
+
+	trigger: function( event, data, elem, onlyHandlers ) {
+
+		var i, cur, tmp, bubbleType, ontype, handle, special,
+			eventPath = [ elem || document ],
+			type = hasOwn.call( event, "type" ) ? event.type : event,
+			namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : [];
+
+		cur = tmp = elem = elem || document;
+
+		// Don't do events on text and comment nodes
+		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
+			return;
+		}
+
+		// focus/blur morphs to focusin/out; ensure we're not firing them right now
+		if ( rfocusMorph.test( type + jQuery.event.triggered ) ) {
+			return;
+		}
+
+		if ( type.indexOf( "." ) > -1 ) {
+
+			// Namespaced trigger; create a regexp to match event type in handle()
+			namespaces = type.split( "." );
+			type = namespaces.shift();
+			namespaces.sort();
+		}
+		ontype = type.indexOf( ":" ) < 0 && "on" + type;
+
+		// Caller can pass in a jQuery.Event object, Object, or just an event type string
+		event = event[ jQuery.expando ] ?
+			event :
+			new jQuery.Event( type, typeof event === "object" && event );
+
+		// Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
+		event.isTrigger = onlyHandlers ? 2 : 3;
+		event.namespace = namespaces.join( "." );
+		event.rnamespace = event.namespace ?
+			new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) :
+			null;
+
+		// Clean up the event in case it is being reused
+		event.result = undefined;
+		if ( !event.target ) {
+			event.target = elem;
+		}
+
+		// Clone any incoming data and prepend the event, creating the handler arg list
+		data = data == null ?
+			[ event ] :
+			jQuery.makeArray( data, [ event ] );
+
+		// Allow special events to draw outside the lines
+		special = jQuery.event.special[ type ] || {};
+		if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) {
+			return;
+		}
+
+		// Determine event propagation path in advance, per W3C events spec (#9951)
+		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
+		if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {
+
+			bubbleType = special.delegateType || type;
+			if ( !rfocusMorph.test( bubbleType + type ) ) {
+				cur = cur.parentNode;
+			}
+			for ( ; cur; cur = cur.parentNode ) {
+				eventPath.push( cur );
+				tmp = cur;
+			}
+
+			// Only add window if we got to document (e.g., not plain obj or detached DOM)
+			if ( tmp === ( elem.ownerDocument || document ) ) {
+				eventPath.push( tmp.defaultView || tmp.parentWindow || window );
+			}
+		}
+
+		// Fire handlers on the event path
+		i = 0;
+		while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {
+
+			event.type = i > 1 ?
+				bubbleType :
+				special.bindType || type;
+
+			// jQuery handler
+			handle = ( dataPriv.get( cur, "events" ) || {} )[ event.type ] &&
+				dataPriv.get( cur, "handle" );
+			if ( handle ) {
+				handle.apply( cur, data );
+			}
+
+			// Native handler
+			handle = ontype && cur[ ontype ];
+			if ( handle && handle.apply && acceptData( cur ) ) {
+				event.result = handle.apply( cur, data );
+				if ( event.result === false ) {
+					event.preventDefault();
+				}
+			}
+		}
+		event.type = type;
+
+		// If nobody prevented the default action, do it now
+		if ( !onlyHandlers && !event.isDefaultPrevented() ) {
+
+			if ( ( !special._default ||
+				special._default.apply( eventPath.pop(), data ) === false ) &&
+				acceptData( elem ) ) {
+
+				// Call a native DOM method on the target with the same name as the event.
+				// Don't do default actions on window, that's where global variables be (#6170)
+				if ( ontype && jQuery.isFunction( elem[ type ] ) && !jQuery.isWindow( elem ) ) {
+
+					// Don't re-trigger an onFOO event when we call its FOO() method
+					tmp = elem[ ontype ];
+
+					if ( tmp ) {
+						elem[ ontype ] = null;
+					}
+
+					// Prevent re-triggering of the same event, since we already bubbled it above
+					jQuery.event.triggered = type;
+					elem[ type ]();
+					jQuery.event.triggered = undefined;
+
+					if ( tmp ) {
+						elem[ ontype ] = tmp;
+					}
+				}
+			}
+		}
+
+		return event.result;
+	},
+
+	// Piggyback on a donor event to simulate a different one
+	// Used only for `focus(in | out)` events
+	simulate: function( type, elem, event ) {
+		var e = jQuery.extend(
+			new jQuery.Event(),
+			event,
+			{
+				type: type,
+				isSimulated: true
+			}
+		);
+
+		jQuery.event.trigger( e, null, elem );
+	}
+
+} );
+
+jQuery.fn.extend( {
+
+	trigger: function( type, data ) {
+		return this.each( function() {
+			jQuery.event.trigger( type, data, this );
+		} );
+	},
+	triggerHandler: function( type, data ) {
+		var elem = this[ 0 ];
+		if ( elem ) {
+			return jQuery.event.trigger( type, data, elem, true );
+		}
+	}
+} );
+
+
+jQuery.each( ( "blur focus focusin focusout resize scroll click dblclick " +
+	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
+	"change select submit keydown keypress keyup contextmenu" ).split( " " ),
+	function( i, name ) {
+
+	// Handle event binding
+	jQuery.fn[ name ] = function( data, fn ) {
+		return arguments.length > 0 ?
+			this.on( name, null, data, fn ) :
+			this.trigger( name );
+	};
+} );
+
+jQuery.fn.extend( {
+	hover: function( fnOver, fnOut ) {
+		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
+	}
+} );
+
+
+
+
+support.focusin = "onfocusin" in window;
+
+
+// Support: Firefox <=44
+// Firefox doesn't have focus(in | out) events
+// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
+//
+// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1
+// focus(in | out) events fire after focus & blur events,
+// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
+// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857
+if ( !support.focusin ) {
+	jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) {
+
+		// Attach a single capturing handler on the document while someone wants focusin/focusout
+		var handler = function( event ) {
+			jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) );
+		};
+
+		jQuery.event.special[ fix ] = {
+			setup: function() {
+				var doc = this.ownerDocument || this,
+					attaches = dataPriv.access( doc, fix );
+
+				if ( !attaches ) {
+					doc.addEventListener( orig, handler, true );
+				}
+				dataPriv.access( doc, fix, ( attaches || 0 ) + 1 );
+			},
+			teardown: function() {
+				var doc = this.ownerDocument || this,
+					attaches = dataPriv.access( doc, fix ) - 1;
+
+				if ( !attaches ) {
+					doc.removeEventListener( orig, handler, true );
+					dataPriv.remove( doc, fix );
+
+				} else {
+					dataPriv.access( doc, fix, attaches );
+				}
+			}
+		};
+	} );
+}
+var location = window.location;
+
+var nonce = jQuery.now();
+
+var rquery = ( /\?/ );
+
+
+
+// Cross-browser xml parsing
+jQuery.parseXML = function( data ) {
+	var xml;
+	if ( !data || typeof data !== "string" ) {
+		return null;
+	}
+
+	// Support: IE 9 - 11 only
+	// IE throws on parseFromString with invalid input.
+	try {
+		xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" );
+	} catch ( e ) {
+		xml = undefined;
+	}
+
+	if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) {
+		jQuery.error( "Invalid XML: " + data );
+	}
+	return xml;
+};
+
+
+var
+	rbracket = /\[\]$/,
+	rCRLF = /\r?\n/g,
+	rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
+	rsubmittable = /^(?:input|select|textarea|keygen)/i;
+
+function buildParams( prefix, obj, traditional, add ) {
+	var name;
+
+	if ( Array.isArray( obj ) ) {
+
+		// Serialize array item.
+		jQuery.each( obj, function( i, v ) {
+			if ( traditional || rbracket.test( prefix ) ) {
+
+				// Treat each array item as a scalar.
+				add( prefix, v );
+
+			} else {
+
+				// Item is non-scalar (array or object), encode its numeric index.
+				buildParams(
+					prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]",
+					v,
+					traditional,
+					add
+				);
+			}
+		} );
+
+	} else if ( !traditional && jQuery.type( obj ) === "object" ) {
+
+		// Serialize object item.
+		for ( name in obj ) {
+			buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add );
+		}
+
+	} else {
+
+		// Serialize scalar item.
+		add( prefix, obj );
+	}
+}
+
+// Serialize an array of form elements or a set of
+// key/values into a query string
+jQuery.param = function( a, traditional ) {
+	var prefix,
+		s = [],
+		add = function( key, valueOrFunction ) {
+
+			// If value is a function, invoke it and use its return value
+			var value = jQuery.isFunction( valueOrFunction ) ?
+				valueOrFunction() :
+				valueOrFunction;
+
+			s[ s.length ] = encodeURIComponent( key ) + "=" +
+				encodeURIComponent( value == null ? "" : value );
+		};
+
+	// If an array was passed in, assume that it is an array of form elements.
+	if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
+
+		// Serialize the form elements
+		jQuery.each( a, function() {
+			add( this.name, this.value );
+		} );
+
+	} else {
+
+		// If traditional, encode the "old" way (the way 1.3.2 or older
+		// did it), otherwise encode params recursively.
+		for ( prefix in a ) {
+			buildParams( prefix, a[ prefix ], traditional, add );
+		}
+	}
+
+	// Return the resulting serialization
+	return s.join( "&" );
+};
+
+jQuery.fn.extend( {
+	serialize: function() {
+		return jQuery.param( this.serializeArray() );
+	},
+	serializeArray: function() {
+		return this.map( function() {
+
+			// Can add propHook for "elements" to filter or add form elements
+			var elements = jQuery.prop( this, "elements" );
+			return elements ? jQuery.makeArray( elements ) : this;
+		} )
+		.filter( function() {
+			var type = this.type;
+
+			// Use .is( ":disabled" ) so that fieldset[disabled] works
+			return this.name && !jQuery( this ).is( ":disabled" ) &&
+				rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) &&
+				( this.checked || !rcheckableType.test( type ) );
+		} )
+		.map( function( i, elem ) {
+			var val = jQuery( this ).val();
+
+			if ( val == null ) {
+				return null;
+			}
+
+			if ( Array.isArray( val ) ) {
+				return jQuery.map( val, function( val ) {
+					return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
+				} );
+			}
+
+			return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) };
+		} ).get();
+	}
+} );
+
+
+var
+	r20 = /%20/g,
+	rhash = /#.*$/,
+	rantiCache = /([?&])_=[^&]*/,
+	rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg,
+
+	// #7653, #8125, #8152: local protocol detection
+	rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/,
+	rnoContent = /^(?:GET|HEAD)$/,
+	rprotocol = /^\/\//,
+
+	/* Prefilters
+	 * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example)
+	 * 2) These are called:
+	 *    - BEFORE asking for a transport
+	 *    - AFTER param serialization (s.data is a string if s.processData is true)
+	 * 3) key is the dataType
+	 * 4) the catchall symbol "*" can be used
+	 * 5) execution will start with transport dataType and THEN continue down to "*" if needed
+	 */
+	prefilters = {},
+
+	/* Transports bindings
+	 * 1) key is the dataType
+	 * 2) the catchall symbol "*" can be used
+	 * 3) selection will start with transport dataType and THEN go to "*" if needed
+	 */
+	transports = {},
+
+	// Avoid comment-prolog char sequence (#10098); must appease lint and evade compression
+	allTypes = "*/".concat( "*" ),
+
+	// Anchor tag for parsing the document origin
+	originAnchor = document.createElement( "a" );
+	originAnchor.href = location.href;
+
+// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport
+function addToPrefiltersOrTransports( structure ) {
+
+	// dataTypeExpression is optional and defaults to "*"
+	return function( dataTypeExpression, func ) {
+
+		if ( typeof dataTypeExpression !== "string" ) {
+			func = dataTypeExpression;
+			dataTypeExpression = "*";
+		}
+
+		var dataType,
+			i = 0,
+			dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || [];
+
+		if ( jQuery.isFunction( func ) ) {
+
+			// For each dataType in the dataTypeExpression
+			while ( ( dataType = dataTypes[ i++ ] ) ) {
+
+				// Prepend if requested
+				if ( dataType[ 0 ] === "+" ) {
+					dataType = dataType.slice( 1 ) || "*";
+					( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func );
+
+				// Otherwise append
+				} else {
+					( structure[ dataType ] = structure[ dataType ] || [] ).push( func );
+				}
+			}
+		}
+	};
+}
+
+// Base inspection function for prefilters and transports
+function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) {
+
+	var inspected = {},
+		seekingTransport = ( structure === transports );
+
+	function inspect( dataType ) {
+		var selected;
+		inspected[ dataType ] = true;
+		jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) {
+			var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR );
+			if ( typeof dataTypeOrTransport === "string" &&
+				!seekingTransport && !inspected[ dataTypeOrTransport ] ) {
+
+				options.dataTypes.unshift( dataTypeOrTransport );
+				inspect( dataTypeOrTransport );
+				return false;
+			} else if ( seekingTransport ) {
+				return !( selected = dataTypeOrTransport );
+			}
+		} );
+		return selected;
+	}
+
+	return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" );
+}
+
+// A special extend for ajax options
+// that takes "flat" options (not to be deep extended)
+// Fixes #9887
+function ajaxExtend( target, src ) {
+	var key, deep,
+		flatOptions = jQuery.ajaxSettings.flatOptions || {};
+
+	for ( key in src ) {
+		if ( src[ key ] !== undefined ) {
+			( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ];
+		}
+	}
+	if ( deep ) {
+		jQuery.extend( true, target, deep );
+	}
+
+	return target;
+}
+
+/* Handles responses to an ajax request:
+ * - finds the right dataType (mediates between content-type and expected dataType)
+ * - returns the corresponding response
+ */
+function ajaxHandleResponses( s, jqXHR, responses ) {
+
+	var ct, type, finalDataType, firstDataType,
+		contents = s.contents,
+		dataTypes = s.dataTypes;
+
+	// Remove auto dataType and get content-type in the process
+	while ( dataTypes[ 0 ] === "*" ) {
+		dataTypes.shift();
+		if ( ct === undefined ) {
+			ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" );
+		}
+	}
+
+	// Check if we're dealing with a known content-type
+	if ( ct ) {
+		for ( type in contents ) {
+			if ( contents[ type ] && contents[ type ].test( ct ) ) {
+				dataTypes.unshift( type );
+				break;
+			}
+		}
+	}
+
+	// Check to see if we have a response for the expected dataType
+	if ( dataTypes[ 0 ] in responses ) {
+		finalDataType = dataTypes[ 0 ];
+	} else {
+
+		// Try convertible dataTypes
+		for ( type in responses ) {
+			if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) {
+				finalDataType = type;
+				break;
+			}
+			if ( !firstDataType ) {
+				firstDataType = type;
+			}
+		}
+
+		// Or just use first one
+		finalDataType = finalDataType || firstDataType;
+	}
+
+	// If we found a dataType
+	// We add the dataType to the list if needed
+	// and return the corresponding response
+	if ( finalDataType ) {
+		if ( finalDataType !== dataTypes[ 0 ] ) {
+			dataTypes.unshift( finalDataType );
+		}
+		return responses[ finalDataType ];
+	}
+}
+
+/* Chain conversions given the request and the original response
+ * Also sets the responseXXX fields on the jqXHR instance
+ */
+function ajaxConvert( s, response, jqXHR, isSuccess ) {
+	var conv2, current, conv, tmp, prev,
+		converters = {},
+
+		// Work with a copy of dataTypes in case we need to modify it for conversion
+		dataTypes = s.dataTypes.slice();
+
+	// Create converters map with lowercased keys
+	if ( dataTypes[ 1 ] ) {
+		for ( conv in s.converters ) {
+			converters[ conv.toLowerCase() ] = s.converters[ conv ];
+		}
+	}
+
+	current = dataTypes.shift();
+
+	// Convert to each sequential dataType
+	while ( current ) {
+
+		if ( s.responseFields[ current ] ) {
+			jqXHR[ s.responseFields[ current ] ] = response;
+		}
+
+		// Apply the dataFilter if provided
+		if ( !prev && isSuccess && s.dataFilter ) {
+			response = s.dataFilter( response, s.dataType );
+		}
+
+		prev = current;
+		current = dataTypes.shift();
+
+		if ( current ) {
+
+			// There's only work to do if current dataType is non-auto
+			if ( current === "*" ) {
+
+				current = prev;
+
+			// Convert response if prev dataType is non-auto and differs from current
+			} else if ( prev !== "*" && prev !== current ) {
+
+				// Seek a direct converter
+				conv = converters[ prev + " " + current ] || converters[ "* " + current ];
+
+				// If none found, seek a pair
+				if ( !conv ) {
+					for ( conv2 in converters ) {
+
+						// If conv2 outputs current
+						tmp = conv2.split( " " );
+						if ( tmp[ 1 ] === current ) {
+
+							// If prev can be converted to accepted input
+							conv = converters[ prev + " " + tmp[ 0 ] ] ||
+								converters[ "* " + tmp[ 0 ] ];
+							if ( conv ) {
+
+								// Condense equivalence converters
+								if ( conv === true ) {
+									conv = converters[ conv2 ];
+
+								// Otherwise, insert the intermediate dataType
+								} else if ( converters[ conv2 ] !== true ) {
+									current = tmp[ 0 ];
+									dataTypes.unshift( tmp[ 1 ] );
+								}
+								break;
+							}
+						}
+					}
+				}
+
+				// Apply converter (if not an equivalence)
+				if ( conv !== true ) {
+
+					// Unless errors are allowed to bubble, catch and return them
+					if ( conv && s.throws ) {
+						response = conv( response );
+					} else {
+						try {
+							response = conv( response );
+						} catch ( e ) {
+							return {
+								state: "parsererror",
+								error: conv ? e : "No conversion from " + prev + " to " + current
+							};
+						}
+					}
+				}
+			}
+		}
+	}
+
+	return { state: "success", data: response };
+}
+
+jQuery.extend( {
+
+	// Counter for holding the number of active queries
+	active: 0,
+
+	// Last-Modified header cache for next request
+	lastModified: {},
+	etag: {},
+
+	ajaxSettings: {
+		url: location.href,
+		type: "GET",
+		isLocal: rlocalProtocol.test( location.protocol ),
+		global: true,
+		processData: true,
+		async: true,
+		contentType: "application/x-www-form-urlencoded; charset=UTF-8",
+
+		/*
+		timeout: 0,
+		data: null,
+		dataType: null,
+		username: null,
+		password: null,
+		cache: null,
+		throws: false,
+		traditional: false,
+		headers: {},
+		*/
+
+		accepts: {
+			"*": allTypes,
+			text: "text/plain",
+			html: "text/html",
+			xml: "application/xml, text/xml",
+			json: "application/json, text/javascript"
+		},
+
+		contents: {
+			xml: /\bxml\b/,
+			html: /\bhtml/,
+			json: /\bjson\b/
+		},
+
+		responseFields: {
+			xml: "responseXML",
+			text: "responseText",
+			json: "responseJSON"
+		},
+
+		// Data converters
+		// Keys separate source (or catchall "*") and destination types with a single space
+		converters: {
+
+			// Convert anything to text
+			"* text": String,
+
+			// Text to html (true = no transformation)
+			"text html": true,
+
+			// Evaluate text as a json expression
+			"text json": JSON.parse,
+
+			// Parse text as xml
+			"text xml": jQuery.parseXML
+		},
+
+		// For options that shouldn't be deep extended:
+		// you can add your own custom options here if
+		// and when you create one that shouldn't be
+		// deep extended (see ajaxExtend)
+		flatOptions: {
+			url: true,
+			context: true
+		}
+	},
+
+	// Creates a full fledged settings object into target
+	// with both ajaxSettings and settings fields.
+	// If target is omitted, writes into ajaxSettings.
+	ajaxSetup: function( target, settings ) {
+		return settings ?
+
+			// Building a settings object
+			ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) :
+
+			// Extending ajaxSettings
+			ajaxExtend( jQuery.ajaxSettings, target );
+	},
+
+	ajaxPrefilter: addToPrefiltersOrTransports( prefilters ),
+	ajaxTransport: addToPrefiltersOrTransports( transports ),
+
+	// Main method
+	ajax: function( url, options ) {
+
+		// If url is an object, simulate pre-1.5 signature
+		if ( typeof url === "object" ) {
+			options = url;
+			url = undefined;
+		}
+
+		// Force options to be an object
+		options = options || {};
+
+		var transport,
+
+			// URL without anti-cache param
+			cacheURL,
+
+			// Response headers
+			responseHeadersString,
+			responseHeaders,
+
+			// timeout handle
+			timeoutTimer,
+
+			// Url cleanup var
+			urlAnchor,
+
+			// Request state (becomes false upon send and true upon completion)
+			completed,
+
+			// To know if global events are to be dispatched
+			fireGlobals,
+
+			// Loop variable
+			i,
+
+			// uncached part of the url
+			uncached,
+
+			// Create the final options object
+			s = jQuery.ajaxSetup( {}, options ),
+
+			// Callbacks context
+			callbackContext = s.context || s,
+
+			// Context for global events is callbackContext if it is a DOM node or jQuery collection
+			globalEventContext = s.context &&
+				( callbackContext.nodeType || callbackContext.jquery ) ?
+					jQuery( callbackContext ) :
+					jQuery.event,
+
+			// Deferreds
+			deferred = jQuery.Deferred(),
+			completeDeferred = jQuery.Callbacks( "once memory" ),
+
+			// Status-dependent callbacks
+			statusCode = s.statusCode || {},
+
+			// Headers (they are sent all at once)
+			requestHeaders = {},
+			requestHeadersNames = {},
+
+			// Default abort message
+			strAbort = "canceled",
+
+			// Fake xhr
+			jqXHR = {
+				readyState: 0,
+
+				// Builds headers hashtable if needed
+				getResponseHeader: function( key ) {
+					var match;
+					if ( completed ) {
+						if ( !responseHeaders ) {
+							responseHeaders = {};
+							while ( ( match = rheaders.exec( responseHeadersString ) ) ) {
+								responseHeaders[ match[ 1 ].toLowerCase() ] = match[ 2 ];
+							}
+						}
+						match = responseHeaders[ key.toLowerCase() ];
+					}
+					return match == null ? null : match;
+				},
+
+				// Raw string
+				getAllResponseHeaders: function() {
+					return completed ? responseHeadersString : null;
+				},
+
+				// Caches the header
+				setRequestHeader: function( name, value ) {
+					if ( completed == null ) {
+						name = requestHeadersNames[ name.toLowerCase() ] =
+							requestHeadersNames[ name.toLowerCase() ] || name;
+						requestHeaders[ name ] = value;
+					}
+					return this;
+				},
+
+				// Overrides response content-type header
+				overrideMimeType: function( type ) {
+					if ( completed == null ) {
+						s.mimeType = type;
+					}
+					return this;
+				},
+
+				// Status-dependent callbacks
+				statusCode: function( map ) {
+					var code;
+					if ( map ) {
+						if ( completed ) {
+
+							// Execute the appropriate callbacks
+							jqXHR.always( map[ jqXHR.status ] );
+						} else {
+
+							// Lazy-add the new callbacks in a way that preserves old ones
+							for ( code in map ) {
+								statusCode[ code ] = [ statusCode[ code ], map[ code ] ];
+							}
+						}
+					}
+					return this;
+				},
+
+				// Cancel the request
+				abort: function( statusText ) {
+					var finalText = statusText || strAbort;
+					if ( transport ) {
+						transport.abort( finalText );
+					}
+					done( 0, finalText );
+					return this;
+				}
+			};
+
+		// Attach deferreds
+		deferred.promise( jqXHR );
+
+		// Add protocol if not provided (prefilters might expect it)
+		// Handle falsy url in the settings object (#10093: consistency with old signature)
+		// We also use the url parameter if available
+		s.url = ( ( url || s.url || location.href ) + "" )
+			.replace( rprotocol, location.protocol + "//" );
+
+		// Alias method option to type as per ticket #12004
+		s.type = options.method || options.type || s.method || s.type;
+
+		// Extract dataTypes list
+		s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ];
+
+		// A cross-domain request is in order when the origin doesn't match the current origin.
+		if ( s.crossDomain == null ) {
+			urlAnchor = document.createElement( "a" );
+
+			// Support: IE <=8 - 11, Edge 12 - 13
+			// IE throws exception on accessing the href property if url is malformed,
+			// e.g. http://example.com:80x/
+			try {
+				urlAnchor.href = s.url;
+
+				// Support: IE <=8 - 11 only
+				// Anchor's host property isn't correctly set when s.url is relative
+				urlAnchor.href = urlAnchor.href;
+				s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !==
+					urlAnchor.protocol + "//" + urlAnchor.host;
+			} catch ( e ) {
+
+				// If there is an error parsing the URL, assume it is crossDomain,
+				// it can be rejected by the transport if it is invalid
+				s.crossDomain = true;
+			}
+		}
+
+		// Convert data if not already a string
+		if ( s.data && s.processData && typeof s.data !== "string" ) {
+			s.data = jQuery.param( s.data, s.traditional );
+		}
+
+		// Apply prefilters
+		inspectPrefiltersOrTransports( prefilters, s, options, jqXHR );
+
+		// If request was aborted inside a prefilter, stop there
+		if ( completed ) {
+			return jqXHR;
+		}
+
+		// We can fire global events as of now if asked to
+		// Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118)
+		fireGlobals = jQuery.event && s.global;
+
+		// Watch for a new set of requests
+		if ( fireGlobals && jQuery.active++ === 0 ) {
+			jQuery.event.trigger( "ajaxStart" );
+		}
+
+		// Uppercase the type
+		s.type = s.type.toUpperCase();
+
+		// Determine if request has content
+		s.hasContent = !rnoContent.test( s.type );
+
+		// Save the URL in case we're toying with the If-Modified-Since
+		// and/or If-None-Match header later on
+		// Remove hash to simplify url manipulation
+		cacheURL = s.url.replace( rhash, "" );
+
+		// More options handling for requests with no content
+		if ( !s.hasContent ) {
+
+			// Remember the hash so we can put it back
+			uncached = s.url.slice( cacheURL.length );
+
+			// If data is available, append data to url
+			if ( s.data ) {
+				cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data;
+
+				// #9682: remove data so that it's not used in an eventual retry
+				delete s.data;
+			}
+
+			// Add or update anti-cache param if needed
+			if ( s.cache === false ) {
+				cacheURL = cacheURL.replace( rantiCache, "$1" );
+				uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce++ ) + uncached;
+			}
+
+			// Put hash and anti-cache on the URL that will be requested (gh-1732)
+			s.url = cacheURL + uncached;
+
+		// Change '%20' to '+' if this is encoded form body content (gh-2658)
+		} else if ( s.data && s.processData &&
+			( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) {
+			s.data = s.data.replace( r20, "+" );
+		}
+
+		// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
+		if ( s.ifModified ) {
+			if ( jQuery.lastModified[ cacheURL ] ) {
+				jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] );
+			}
+			if ( jQuery.etag[ cacheURL ] ) {
+				jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] );
+			}
+		}
+
+		// Set the correct header, if data is being sent
+		if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) {
+			jqXHR.setRequestHeader( "Content-Type", s.contentType );
+		}
+
+		// Set the Accepts header for the server, depending on the dataType
+		jqXHR.setRequestHeader(
+			"Accept",
+			s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ?
+				s.accepts[ s.dataTypes[ 0 ] ] +
+					( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) :
+				s.accepts[ "*" ]
+		);
+
+		// Check for headers option
+		for ( i in s.headers ) {
+			jqXHR.setRequestHeader( i, s.headers[ i ] );
+		}
+
+		// Allow custom headers/mimetypes and early abort
+		if ( s.beforeSend &&
+			( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) {
+
+			// Abort if not done already and return
+			return jqXHR.abort();
+		}
+
+		// Aborting is no longer a cancellation
+		strAbort = "abort";
+
+		// Install callbacks on deferreds
+		completeDeferred.add( s.complete );
+		jqXHR.done( s.success );
+		jqXHR.fail( s.error );
+
+		// Get transport
+		transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR );
+
+		// If no transport, we auto-abort
+		if ( !transport ) {
+			done( -1, "No Transport" );
+		} else {
+			jqXHR.readyState = 1;
+
+			// Send global event
+			if ( fireGlobals ) {
+				globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] );
+			}
+
+			// If request was aborted inside ajaxSend, stop there
+			if ( completed ) {
+				return jqXHR;
+			}
+
+			// Timeout
+			if ( s.async && s.timeout > 0 ) {
+				timeoutTimer = window.setTimeout( function() {
+					jqXHR.abort( "timeout" );
+				}, s.timeout );
+			}
+
+			try {
+				completed = false;
+				transport.send( requestHeaders, done );
+			} catch ( e ) {
+
+				// Rethrow post-completion exceptions
+				if ( completed ) {
+					throw e;
+				}
+
+				// Propagate others as results
+				done( -1, e );
+			}
+		}
+
+		// Callback for when everything is done
+		function done( status, nativeStatusText, responses, headers ) {
+			var isSuccess, success, error, response, modified,
+				statusText = nativeStatusText;
+
+			// Ignore repeat invocations
+			if ( completed ) {
+				return;
+			}
+
+			completed = true;
+
+			// Clear timeout if it exists
+			if ( timeoutTimer ) {
+				window.clearTimeout( timeoutTimer );
+			}
+
+			// Dereference transport for early garbage collection
+			// (no matter how long the jqXHR object will be used)
+			transport = undefined;
+
+			// Cache response headers
+			responseHeadersString = headers || "";
+
+			// Set readyState
+			jqXHR.readyState = status > 0 ? 4 : 0;
+
+			// Determine if successful
+			isSuccess = status >= 200 && status < 300 || status === 304;
+
+			// Get response data
+			if ( responses ) {
+				response = ajaxHandleResponses( s, jqXHR, responses );
+			}
+
+			// Convert no matter what (that way responseXXX fields are always set)
+			response = ajaxConvert( s, response, jqXHR, isSuccess );
+
+			// If successful, handle type chaining
+			if ( isSuccess ) {
+
+				// Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode.
+				if ( s.ifModified ) {
+					modified = jqXHR.getResponseHeader( "Last-Modified" );
+					if ( modified ) {
+						jQuery.lastModified[ cacheURL ] = modified;
+					}
+					modified = jqXHR.getResponseHeader( "etag" );
+					if ( modified ) {
+						jQuery.etag[ cacheURL ] = modified;
+					}
+				}
+
+				// if no content
+				if ( status === 204 || s.type === "HEAD" ) {
+					statusText = "nocontent";
+
+				// if not modified
+				} else if ( status === 304 ) {
+					statusText = "notmodified";
+
+				// If we have data, let's convert it
+				} else {
+					statusText = response.state;
+					success = response.data;
+					error = response.error;
+					isSuccess = !error;
+				}
+			} else {
+
+				// Extract error from statusText and normalize for non-aborts
+				error = statusText;
+				if ( status || !statusText ) {
+					statusText = "error";
+					if ( status < 0 ) {
+						status = 0;
+					}
+				}
+			}
+
+			// Set data for the fake xhr object
+			jqXHR.status = status;
+			jqXHR.statusText = ( nativeStatusText || statusText ) + "";
+
+			// Success/Error
+			if ( isSuccess ) {
+				deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] );
+			} else {
+				deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] );
+			}
+
+			// Status-dependent callbacks
+			jqXHR.statusCode( statusCode );
+			statusCode = undefined;
+
+			if ( fireGlobals ) {
+				globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError",
+					[ jqXHR, s, isSuccess ? success : error ] );
+			}
+
+			// Complete
+			completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] );
+
+			if ( fireGlobals ) {
+				globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] );
+
+				// Handle the global AJAX counter
+				if ( !( --jQuery.active ) ) {
+					jQuery.event.trigger( "ajaxStop" );
+				}
+			}
+		}
+
+		return jqXHR;
+	},
+
+	getJSON: function( url, data, callback ) {
+		return jQuery.get( url, data, callback, "json" );
+	},
+
+	getScript: function( url, callback ) {
+		return jQuery.get( url, undefined, callback, "script" );
+	}
+} );
+
+jQuery.each( [ "get", "post" ], function( i, method ) {
+	jQuery[ method ] = function( url, data, callback, type ) {
+
+		// Shift arguments if data argument was omitted
+		if ( jQuery.isFunction( data ) ) {
+			type = type || callback;
+			callback = data;
+			data = undefined;
+		}
+
+		// The url can be an options object (which then must have .url)
+		return jQuery.ajax( jQuery.extend( {
+			url: url,
+			type: method,
+			dataType: type,
+			data: data,
+			success: callback
+		}, jQuery.isPlainObject( url ) && url ) );
+	};
+} );
+
+
+jQuery._evalUrl = function( url ) {
+	return jQuery.ajax( {
+		url: url,
+
+		// Make this explicit, since user can override this through ajaxSetup (#11264)
+		type: "GET",
+		dataType: "script",
+		cache: true,
+		async: false,
+		global: false,
+		"throws": true
+	} );
+};
+
+
+jQuery.fn.extend( {
+	wrapAll: function( html ) {
+		var wrap;
+
+		if ( this[ 0 ] ) {
+			if ( jQuery.isFunction( html ) ) {
+				html = html.call( this[ 0 ] );
+			}
+
+			// The elements to wrap the target around
+			wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true );
+
+			if ( this[ 0 ].parentNode ) {
+				wrap.insertBefore( this[ 0 ] );
+			}
+
+			wrap.map( function() {
+				var elem = this;
+
+				while ( elem.firstElementChild ) {
+					elem = elem.firstElementChild;
+				}
+
+				return elem;
+			} ).append( this );
+		}
+
+		return this;
+	},
+
+	wrapInner: function( html ) {
+		if ( jQuery.isFunction( html ) ) {
+			return this.each( function( i ) {
+				jQuery( this ).wrapInner( html.call( this, i ) );
+			} );
+		}
+
+		return this.each( function() {
+			var self = jQuery( this ),
+				contents = self.contents();
+
+			if ( contents.length ) {
+				contents.wrapAll( html );
+
+			} else {
+				self.append( html );
+			}
+		} );
+	},
+
+	wrap: function( html ) {
+		var isFunction = jQuery.isFunction( html );
+
+		return this.each( function( i ) {
+			jQuery( this ).wrapAll( isFunction ? html.call( this, i ) : html );
+		} );
+	},
+
+	unwrap: function( selector ) {
+		this.parent( selector ).not( "body" ).each( function() {
+			jQuery( this ).replaceWith( this.childNodes );
+		} );
+		return this;
+	}
+} );
+
+
+jQuery.expr.pseudos.hidden = function( elem ) {
+	return !jQuery.expr.pseudos.visible( elem );
+};
+jQuery.expr.pseudos.visible = function( elem ) {
+	return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length );
+};
+
+
+
+
+jQuery.ajaxSettings.xhr = function() {
+	try {
+		return new window.XMLHttpRequest();
+	} catch ( e ) {}
+};
+
+var xhrSuccessStatus = {
+
+		// File protocol always yields status code 0, assume 200
+		0: 200,
+
+		// Support: IE <=9 only
+		// #1450: sometimes IE returns 1223 when it should be 204
+		1223: 204
+	},
+	xhrSupported = jQuery.ajaxSettings.xhr();
+
+support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported );
+support.ajax = xhrSupported = !!xhrSupported;
+
+jQuery.ajaxTransport( function( options ) {
+	var callback, errorCallback;
+
+	// Cross domain only allowed if supported through XMLHttpRequest
+	if ( support.cors || xhrSupported && !options.crossDomain ) {
+		return {
+			send: function( headers, complete ) {
+				var i,
+					xhr = options.xhr();
+
+				xhr.open(
+					options.type,
+					options.url,
+					options.async,
+					options.username,
+					options.password
+				);
+
+				// Apply custom fields if provided
+				if ( options.xhrFields ) {
+					for ( i in options.xhrFields ) {
+						xhr[ i ] = options.xhrFields[ i ];
+					}
+				}
+
+				// Override mime type if needed
+				if ( options.mimeType && xhr.overrideMimeType ) {
+					xhr.overrideMimeType( options.mimeType );
+				}
+
+				// X-Requested-With header
+				// For cross-domain requests, seeing as conditions for a preflight are
+				// akin to a jigsaw puzzle, we simply never set it to be sure.
+				// (it can always be set on a per-request basis or even using ajaxSetup)
+				// For same-domain requests, won't change header if already provided.
+				if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) {
+					headers[ "X-Requested-With" ] = "XMLHttpRequest";
+				}
+
+				// Set headers
+				for ( i in headers ) {
+					xhr.setRequestHeader( i, headers[ i ] );
+				}
+
+				// Callback
+				callback = function( type ) {
+					return function() {
+						if ( callback ) {
+							callback = errorCallback = xhr.onload =
+								xhr.onerror = xhr.onabort = xhr.onreadystatechange = null;
+
+							if ( type === "abort" ) {
+								xhr.abort();
+							} else if ( type === "error" ) {
+
+								// Support: IE <=9 only
+								// On a manual native abort, IE9 throws
+								// errors on any property access that is not readyState
+								if ( typeof xhr.status !== "number" ) {
+									complete( 0, "error" );
+								} else {
+									complete(
+
+										// File: protocol always yields status 0; see #8605, #14207
+										xhr.status,
+										xhr.statusText
+									);
+								}
+							} else {
+								complete(
+									xhrSuccessStatus[ xhr.status ] || xhr.status,
+									xhr.statusText,
+
+									// Support: IE <=9 only
+									// IE9 has no XHR2 but throws on binary (trac-11426)
+									// For XHR2 non-text, let the caller handle it (gh-2498)
+									( xhr.responseType || "text" ) !== "text"  ||
+									typeof xhr.responseText !== "string" ?
+										{ binary: xhr.response } :
+										{ text: xhr.responseText },
+									xhr.getAllResponseHeaders()
+								);
+							}
+						}
+					};
+				};
+
+				// Listen to events
+				xhr.onload = callback();
+				errorCallback = xhr.onerror = callback( "error" );
+
+				// Support: IE 9 only
+				// Use onreadystatechange to replace onabort
+				// to handle uncaught aborts
+				if ( xhr.onabort !== undefined ) {
+					xhr.onabort = errorCallback;
+				} else {
+					xhr.onreadystatechange = function() {
+
+						// Check readyState before timeout as it changes
+						if ( xhr.readyState === 4 ) {
+
+							// Allow onerror to be called first,
+							// but that will not handle a native abort
+							// Also, save errorCallback to a variable
+							// as xhr.onerror cannot be accessed
+							window.setTimeout( function() {
+								if ( callback ) {
+									errorCallback();
+								}
+							} );
+						}
+					};
+				}
+
+				// Create the abort callback
+				callback = callback( "abort" );
+
+				try {
+
+					// Do send the request (this may raise an exception)
+					xhr.send( options.hasContent && options.data || null );
+				} catch ( e ) {
+
+					// #14683: Only rethrow if this hasn't been notified as an error yet
+					if ( callback ) {
+						throw e;
+					}
+				}
+			},
+
+			abort: function() {
+				if ( callback ) {
+					callback();
+				}
+			}
+		};
+	}
+} );
+
+
+
+
+// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432)
+jQuery.ajaxPrefilter( function( s ) {
+	if ( s.crossDomain ) {
+		s.contents.script = false;
+	}
+} );
+
+// Install script dataType
+jQuery.ajaxSetup( {
+	accepts: {
+		script: "text/javascript, application/javascript, " +
+			"application/ecmascript, application/x-ecmascript"
+	},
+	contents: {
+		script: /\b(?:java|ecma)script\b/
+	},
+	converters: {
+		"text script": function( text ) {
+			jQuery.globalEval( text );
+			return text;
+		}
+	}
+} );
+
+// Handle cache's special case and crossDomain
+jQuery.ajaxPrefilter( "script", function( s ) {
+	if ( s.cache === undefined ) {
+		s.cache = false;
+	}
+	if ( s.crossDomain ) {
+		s.type = "GET";
+	}
+} );
+
+// Bind script tag hack transport
+jQuery.ajaxTransport( "script", function( s ) {
+
+	// This transport only deals with cross domain requests
+	if ( s.crossDomain ) {
+		var script, callback;
+		return {
+			send: function( _, complete ) {
+				script = jQuery( "<script>" ).prop( {
+					charset: s.scriptCharset,
+					src: s.url
+				} ).on(
+					"load error",
+					callback = function( evt ) {
+						script.remove();
+						callback = null;
+						if ( evt ) {
+							complete( evt.type === "error" ? 404 : 200, evt.type );
+						}
+					}
+				);
+
+				// Use native DOM manipulation to avoid our domManip AJAX trickery
+				document.head.appendChild( script[ 0 ] );
+			},
+			abort: function() {
+				if ( callback ) {
+					callback();
+				}
+			}
+		};
+	}
+} );
+
+
+
+
+var oldCallbacks = [],
+	rjsonp = /(=)\?(?=&|$)|\?\?/;
+
+// Default jsonp settings
+jQuery.ajaxSetup( {
+	jsonp: "callback",
+	jsonpCallback: function() {
+		var callback = oldCallbacks.pop() || ( jQuery.expando + "_" + ( nonce++ ) );
+		this[ callback ] = true;
+		return callback;
+	}
+} );
+
+// Detect, normalize options and install callbacks for jsonp requests
+jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
+
+	var callbackName, overwritten, responseContainer,
+		jsonProp = s.jsonp !== false && ( rjsonp.test( s.url ) ?
+			"url" :
+			typeof s.data === "string" &&
+				( s.contentType || "" )
+					.indexOf( "application/x-www-form-urlencoded" ) === 0 &&
+				rjsonp.test( s.data ) && "data"
+		);
+
+	// Handle iff the expected data type is "jsonp" or we have a parameter to set
+	if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {
+
+		// Get callback name, remembering preexisting value associated with it
+		callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
+			s.jsonpCallback() :
+			s.jsonpCallback;
+
+		// Insert callback into url or form data
+		if ( jsonProp ) {
+			s[ jsonProp ] = s[ jsonProp ].replace( rjsonp, "$1" + callbackName );
+		} else if ( s.jsonp !== false ) {
+			s.url += ( rquery.test( s.url ) ? "&" : "?" ) + s.jsonp + "=" + callbackName;
+		}
+
+		// Use data converter to retrieve json after script execution
+		s.converters[ "script json" ] = function() {
+			if ( !responseContainer ) {
+				jQuery.error( callbackName + " was not called" );
+			}
+			return responseContainer[ 0 ];
+		};
+
+		// Force json dataType
+		s.dataTypes[ 0 ] = "json";
+
+		// Install callback
+		overwritten = window[ callbackName ];
+		window[ callbackName ] = function() {
+			responseContainer = arguments;
+		};
+
+		// Clean-up function (fires after converters)
+		jqXHR.always( function() {
+
+			// If previous value didn't exist - remove it
+			if ( overwritten === undefined ) {
+				jQuery( window ).removeProp( callbackName );
+
+			// Otherwise restore preexisting value
+			} else {
+				window[ callbackName ] = overwritten;
+			}
+
+			// Save back as free
+			if ( s[ callbackName ] ) {
+
+				// Make sure that re-using the options doesn't screw things around
+				s.jsonpCallback = originalSettings.jsonpCallback;
+
+				// Save the callback name for future use
+				oldCallbacks.push( callbackName );
+			}
+
+			// Call if it was a function and we have a response
+			if ( responseContainer && jQuery.isFunction( overwritten ) ) {
+				overwritten( responseContainer[ 0 ] );
+			}
+
+			responseContainer = overwritten = undefined;
+		} );
+
+		// Delegate to script
+		return "script";
+	}
+} );
+
+
+
+
+// Support: Safari 8 only
+// In Safari 8 documents created via document.implementation.createHTMLDocument
+// collapse sibling forms: the second one becomes a child of the first one.
+// Because of that, this security measure has to be disabled in Safari 8.
+// https://bugs.webkit.org/show_bug.cgi?id=137337
+support.createHTMLDocument = ( function() {
+	var body = document.implementation.createHTMLDocument( "" ).body;
+	body.innerHTML = "<form></form><form></form>";
+	return body.childNodes.length === 2;
+} )();
+
+
+// Argument "data" should be string of html
+// context (optional): If specified, the fragment will be created in this context,
+// defaults to document
+// keepScripts (optional): If true, will include scripts passed in the html string
+jQuery.parseHTML = function( data, context, keepScripts ) {
+	if ( typeof data !== "string" ) {
+		return [];
+	}
+	if ( typeof context === "boolean" ) {
+		keepScripts = context;
+		context = false;
+	}
+
+	var base, parsed, scripts;
+
+	if ( !context ) {
+
+		// Stop scripts or inline event handlers from being executed immediately
+		// by using document.implementation
+		if ( support.createHTMLDocument ) {
+			context = document.implementation.createHTMLDocument( "" );
+
+			// Set the base href for the created document
+			// so any parsed elements with URLs
+			// are based on the document's URL (gh-2965)
+			base = context.createElement( "base" );
+			base.href = document.location.href;
+			context.head.appendChild( base );
+		} else {
+			context = document;
+		}
+	}
+
+	parsed = rsingleTag.exec( data );
+	scripts = !keepScripts && [];
+
+	// Single tag
+	if ( parsed ) {
+		return [ context.createElement( parsed[ 1 ] ) ];
+	}
+
+	parsed = buildFragment( [ data ], context, scripts );
+
+	if ( scripts && scripts.length ) {
+		jQuery( scripts ).remove();
+	}
+
+	return jQuery.merge( [], parsed.childNodes );
+};
+
+
+/**
+ * Load a url into a page
+ */
+jQuery.fn.load = function( url, params, callback ) {
+	var selector, type, response,
+		self = this,
+		off = url.indexOf( " " );
+
+	if ( off > -1 ) {
+		selector = stripAndCollapse( url.slice( off ) );
+		url = url.slice( 0, off );
+	}
+
+	// If it's a function
+	if ( jQuery.isFunction( params ) ) {
+
+		// We assume that it's the callback
+		callback = params;
+		params = undefined;
+
+	// Otherwise, build a param string
+	} else if ( params && typeof params === "object" ) {
+		type = "POST";
+	}
+
+	// If we have elements to modify, make the request
+	if ( self.length > 0 ) {
+		jQuery.ajax( {
+			url: url,
+
+			// If "type" variable is undefined, then "GET" method will be used.
+			// Make value of this field explicit since
+			// user can override it through ajaxSetup method
+			type: type || "GET",
+			dataType: "html",
+			data: params
+		} ).done( function( responseText ) {
+
+			// Save response for use in complete callback
+			response = arguments;
+
+			self.html( selector ?
+
+				// If a selector was specified, locate the right elements in a dummy div
+				// Exclude scripts to avoid IE 'Permission Denied' errors
+				jQuery( "<div>" ).append( jQuery.parseHTML( responseText ) ).find( selector ) :
+
+				// Otherwise use the full result
+				responseText );
+
+		// If the request succeeds, this function gets "data", "status", "jqXHR"
+		// but they are ignored because response was set above.
+		// If it fails, this function gets "jqXHR", "status", "error"
+		} ).always( callback && function( jqXHR, status ) {
+			self.each( function() {
+				callback.apply( this, response || [ jqXHR.responseText, status, jqXHR ] );
+			} );
+		} );
+	}
+
+	return this;
+};
+
+
+
+
+// Attach a bunch of functions for handling common AJAX events
+jQuery.each( [
+	"ajaxStart",
+	"ajaxStop",
+	"ajaxComplete",
+	"ajaxError",
+	"ajaxSuccess",
+	"ajaxSend"
+], function( i, type ) {
+	jQuery.fn[ type ] = function( fn ) {
+		return this.on( type, fn );
+	};
+} );
+
+
+
+
+jQuery.expr.pseudos.animated = function( elem ) {
+	return jQuery.grep( jQuery.timers, function( fn ) {
+		return elem === fn.elem;
+	} ).length;
+};
+
+
+
+
+jQuery.offset = {
+	setOffset: function( elem, options, i ) {
+		var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
+			position = jQuery.css( elem, "position" ),
+			curElem = jQuery( elem ),
+			props = {};
+
+		// Set position first, in-case top/left are set even on static elem
+		if ( position === "static" ) {
+			elem.style.position = "relative";
+		}
+
+		curOffset = curElem.offset();
+		curCSSTop = jQuery.css( elem, "top" );
+		curCSSLeft = jQuery.css( elem, "left" );
+		calculatePosition = ( position === "absolute" || position === "fixed" ) &&
+			( curCSSTop + curCSSLeft ).indexOf( "auto" ) > -1;
+
+		// Need to be able to calculate position if either
+		// top or left is auto and position is either absolute or fixed
+		if ( calculatePosition ) {
+			curPosition = curElem.position();
+			curTop = curPosition.top;
+			curLeft = curPosition.left;
+
+		} else {
+			curTop = parseFloat( curCSSTop ) || 0;
+			curLeft = parseFloat( curCSSLeft ) || 0;
+		}
+
+		if ( jQuery.isFunction( options ) ) {
+
+			// Use jQuery.extend here to allow modification of coordinates argument (gh-1848)
+			options = options.call( elem, i, jQuery.extend( {}, curOffset ) );
+		}
+
+		if ( options.top != null ) {
+			props.top = ( options.top - curOffset.top ) + curTop;
+		}
+		if ( options.left != null ) {
+			props.left = ( options.left - curOffset.left ) + curLeft;
+		}
+
+		if ( "using" in options ) {
+			options.using.call( elem, props );
+
+		} else {
+			curElem.css( props );
+		}
+	}
+};
+
+jQuery.fn.extend( {
+	offset: function( options ) {
+
+		// Preserve chaining for setter
+		if ( arguments.length ) {
+			return options === undefined ?
+				this :
+				this.each( function( i ) {
+					jQuery.offset.setOffset( this, options, i );
+				} );
+		}
+
+		var doc, docElem, rect, win,
+			elem = this[ 0 ];
+
+		if ( !elem ) {
+			return;
+		}
+
+		// Return zeros for disconnected and hidden (display: none) elements (gh-2310)
+		// Support: IE <=11 only
+		// Running getBoundingClientRect on a
+		// disconnected node in IE throws an error
+		if ( !elem.getClientRects().length ) {
+			return { top: 0, left: 0 };
+		}
+
+		rect = elem.getBoundingClientRect();
+
+		doc = elem.ownerDocument;
+		docElem = doc.documentElement;
+		win = doc.defaultView;
+
+		return {
+			top: rect.top + win.pageYOffset - docElem.clientTop,
+			left: rect.left + win.pageXOffset - docElem.clientLeft
+		};
+	},
+
+	position: function() {
+		if ( !this[ 0 ] ) {
+			return;
+		}
+
+		var offsetParent, offset,
+			elem = this[ 0 ],
+			parentOffset = { top: 0, left: 0 };
+
+		// Fixed elements are offset from window (parentOffset = {top:0, left: 0},
+		// because it is its only offset parent
+		if ( jQuery.css( elem, "position" ) === "fixed" ) {
+
+			// Assume getBoundingClientRect is there when computed position is fixed
+			offset = elem.getBoundingClientRect();
+
+		} else {
+
+			// Get *real* offsetParent
+			offsetParent = this.offsetParent();
+
+			// Get correct offsets
+			offset = this.offset();
+			if ( !nodeName( offsetParent[ 0 ], "html" ) ) {
+				parentOffset = offsetParent.offset();
+			}
+
+			// Add offsetParent borders
+			parentOffset = {
+				top: parentOffset.top + jQuery.css( offsetParent[ 0 ], "borderTopWidth", true ),
+				left: parentOffset.left + jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true )
+			};
+		}
+
+		// Subtract parent offsets and element margins
+		return {
+			top: offset.top - parentOffset.top - jQuery.css( elem, "marginTop", true ),
+			left: offset.left - parentOffset.left - jQuery.css( elem, "marginLeft", true )
+		};
+	},
+
+	// This method will return documentElement in the following cases:
+	// 1) For the element inside the iframe without offsetParent, this method will return
+	//    documentElement of the parent window
+	// 2) For the hidden or detached element
+	// 3) For body or html element, i.e. in case of the html node - it will return itself
+	//
+	// but those exceptions were never presented as a real life use-cases
+	// and might be considered as more preferable results.
+	//
+	// This logic, however, is not guaranteed and can change at any point in the future
+	offsetParent: function() {
+		return this.map( function() {
+			var offsetParent = this.offsetParent;
+
+			while ( offsetParent && jQuery.css( offsetParent, "position" ) === "static" ) {
+				offsetParent = offsetParent.offsetParent;
+			}
+
+			return offsetParent || documentElement;
+		} );
+	}
+} );
+
+// Create scrollLeft and scrollTop methods
+jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function( method, prop ) {
+	var top = "pageYOffset" === prop;
+
+	jQuery.fn[ method ] = function( val ) {
+		return access( this, function( elem, method, val ) {
+
+			// Coalesce documents and windows
+			var win;
+			if ( jQuery.isWindow( elem ) ) {
+				win = elem;
+			} else if ( elem.nodeType === 9 ) {
+				win = elem.defaultView;
+			}
+
+			if ( val === undefined ) {
+				return win ? win[ prop ] : elem[ method ];
+			}
+
+			if ( win ) {
+				win.scrollTo(
+					!top ? val : win.pageXOffset,
+					top ? val : win.pageYOffset
+				);
+
+			} else {
+				elem[ method ] = val;
+			}
+		}, method, val, arguments.length );
+	};
+} );
+
+// Support: Safari <=7 - 9.1, Chrome <=37 - 49
+// Add the top/left cssHooks using jQuery.fn.position
+// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
+// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347
+// getComputedStyle returns percent when specified for top/left/bottom/right;
+// rather than make the css module depend on the offset module, just check for it here
+jQuery.each( [ "top", "left" ], function( i, prop ) {
+	jQuery.cssHooks[ prop ] = addGetHookIf( support.pixelPosition,
+		function( elem, computed ) {
+			if ( computed ) {
+				computed = curCSS( elem, prop );
+
+				// If curCSS returns percentage, fallback to offset
+				return rnumnonpx.test( computed ) ?
+					jQuery( elem ).position()[ prop ] + "px" :
+					computed;
+			}
+		}
+	);
+} );
+
+
+// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
+jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
+	jQuery.each( { padding: "inner" + name, content: type, "": "outer" + name },
+		function( defaultExtra, funcName ) {
+
+		// Margin is only for outerHeight, outerWidth
+		jQuery.fn[ funcName ] = function( margin, value ) {
+			var chainable = arguments.length && ( defaultExtra || typeof margin !== "boolean" ),
+				extra = defaultExtra || ( margin === true || value === true ? "margin" : "border" );
+
+			return access( this, function( elem, type, value ) {
+				var doc;
+
+				if ( jQuery.isWindow( elem ) ) {
+
+					// $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)
+					return funcName.indexOf( "outer" ) === 0 ?
+						elem[ "inner" + name ] :
+						elem.document.documentElement[ "client" + name ];
+				}
+
+				// Get document width or height
+				if ( elem.nodeType === 9 ) {
+					doc = elem.documentElement;
+
+					// Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
+					// whichever is greatest
+					return Math.max(
+						elem.body[ "scroll" + name ], doc[ "scroll" + name ],
+						elem.body[ "offset" + name ], doc[ "offset" + name ],
+						doc[ "client" + name ]
+					);
+				}
+
+				return value === undefined ?
+
+					// Get width or height on the element, requesting but not forcing parseFloat
+					jQuery.css( elem, type, extra ) :
+
+					// Set width or height on the element
+					jQuery.style( elem, type, value, extra );
+			}, type, chainable ? margin : undefined, chainable );
+		};
+	} );
+} );
+
+
+jQuery.fn.extend( {
+
+	bind: function( types, data, fn ) {
+		return this.on( types, null, data, fn );
+	},
+	unbind: function( types, fn ) {
+		return this.off( types, null, fn );
+	},
+
+	delegate: function( selector, types, data, fn ) {
+		return this.on( types, selector, data, fn );
+	},
+	undelegate: function( selector, types, fn ) {
+
+		// ( namespace ) or ( selector, types [, fn] )
+		return arguments.length === 1 ?
+			this.off( selector, "**" ) :
+			this.off( types, selector || "**", fn );
+	}
+} );
+
+jQuery.holdReady = function( hold ) {
+	if ( hold ) {
+		jQuery.readyWait++;
+	} else {
+		jQuery.ready( true );
+	}
+};
+jQuery.isArray = Array.isArray;
+jQuery.parseJSON = JSON.parse;
+jQuery.nodeName = nodeName;
+
+
+
+
+// Register as a named AMD module, since jQuery can be concatenated with other
+// files that may use define, but not via a proper concatenation script that
+// understands anonymous AMD modules. A named AMD is safest and most robust
+// way to register. Lowercase jquery is used because AMD module names are
+// derived from file names, and jQuery is normally delivered in a lowercase
+// file name. Do this after creating the global so that if an AMD module wants
+// to call noConflict to hide this version of jQuery, it will work.
+
+// Note that for maximum portability, libraries that are not jQuery should
+// declare themselves as anonymous modules, and avoid setting a global if an
+// AMD loader is present. jQuery is a special case. For more information, see
+// https://github.com/jrburke/requirejs/wiki/Updating-existing-libraries#wiki-anon
+
+if ( typeof define === "function" && define.amd ) {
+	define( "jquery", [], function() {
+		return jQuery;
+	} );
+}
+
+
+
+
+var
+
+	// Map over jQuery in case of overwrite
+	_jQuery = window.jQuery,
+
+	// Map over the $ in case of overwrite
+	_$ = window.$;
+
+jQuery.noConflict = function( deep ) {
+	if ( window.$ === jQuery ) {
+		window.$ = _$;
+	}
+
+	if ( deep && window.jQuery === jQuery ) {
+		window.jQuery = _jQuery;
+	}
+
+	return jQuery;
+};
+
+// Expose jQuery and $ identifiers, even in AMD
+// (#7102#comment:10, https://github.com/jquery/jquery/pull/557)
+// and CommonJS for browser emulators (#13566)
+if ( !noGlobal ) {
+	window.jQuery = window.$ = jQuery;
+}
+
+
+
+
+return jQuery;
+} );

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/jquery.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/jquery.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/jquery.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,4 @@
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Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/language_data.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/language_data.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/language_data.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,297 @@
+/*
+ * language_data.js
+ * ~~~~~~~~~~~~~~~~
+ *
+ * This script contains the language-specific data used by searchtools.js,
+ * namely the list of stopwords, stemmer, scorer and splitter.
+ *
+ * :copyright: Copyright 2007-2019 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+var stopwords = ["a","and","are","as","at","be","but","by","for","if","in","into","is","it","near","no","not","of","on","or","such","that","the","their","then","there","these","they","this","to","was","will","with"];
+
+
+/* Non-minified version JS is _stemmer.js if file is provided */ 
+/**
+ * Porter Stemmer
+ */
+var Stemmer = function() {
+
+  var step2list = {
+    ational: 'ate',
+    tional: 'tion',
+    enci: 'ence',
+    anci: 'ance',
+    izer: 'ize',
+    bli: 'ble',
+    alli: 'al',
+    entli: 'ent',
+    eli: 'e',
+    ousli: 'ous',
+    ization: 'ize',
+    ation: 'ate',
+    ator: 'ate',
+    alism: 'al',
+    iveness: 'ive',
+    fulness: 'ful',
+    ousness: 'ous',
+    aliti: 'al',
+    iviti: 'ive',
+    biliti: 'ble',
+    logi: 'log'
+  };
+
+  var step3list = {
+    icate: 'ic',
+    ative: '',
+    alize: 'al',
+    iciti: 'ic',
+    ical: 'ic',
+    ful: '',
+    ness: ''
+  };
+
+  var c = "[^aeiou]";          // consonant
+  var v = "[aeiouy]";          // vowel
+  var C = c + "[^aeiouy]*";    // consonant sequence
+  var V = v + "[aeiou]*";      // vowel sequence
+
+  var mgr0 = "^(" + C + ")?" + V + C;                      // [C]VC... is m>0
+  var meq1 = "^(" + C + ")?" + V + C + "(" + V + ")?$";    // [C]VC[V] is m=1
+  var mgr1 = "^(" + C + ")?" + V + C + V + C;              // [C]VCVC... is m>1
+  var s_v   = "^(" + C + ")?" + v;                         // vowel in stem
+
+  this.stemWord = function (w) {
+    var stem;
+    var suffix;
+    var firstch;
+    var origword = w;
+
+    if (w.length < 3)
+      return w;
+
+    var re;
+    var re2;
+    var re3;
+    var re4;
+
+    firstch = w.substr(0,1);
+    if (firstch == "y")
+      w = firstch.toUpperCase() + w.substr(1);
+
+    // Step 1a
+    re = /^(.+?)(ss|i)es$/;
+    re2 = /^(.+?)([^s])s$/;
+
+    if (re.test(w))
+      w = w.replace(re,"$1$2");
+    else if (re2.test(w))
+      w = w.replace(re2,"$1$2");
+
+    // Step 1b
+    re = /^(.+?)eed$/;
+    re2 = /^(.+?)(ed|ing)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      re = new RegExp(mgr0);
+      if (re.test(fp[1])) {
+        re = /.$/;
+        w = w.replace(re,"");
+      }
+    }
+    else if (re2.test(w)) {
+      var fp = re2.exec(w);
+      stem = fp[1];
+      re2 = new RegExp(s_v);
+      if (re2.test(stem)) {
+        w = stem;
+        re2 = /(at|bl|iz)$/;
+        re3 = new RegExp("([^aeiouylsz])\\1$");
+        re4 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+        if (re2.test(w))
+          w = w + "e";
+        else if (re3.test(w)) {
+          re = /.$/;
+          w = w.replace(re,"");
+        }
+        else if (re4.test(w))
+          w = w + "e";
+      }
+    }
+
+    // Step 1c
+    re = /^(.+?)y$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      re = new RegExp(s_v);
+      if (re.test(stem))
+        w = stem + "i";
+    }
+
+    // Step 2
+    re = /^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      suffix = fp[2];
+      re = new RegExp(mgr0);
+      if (re.test(stem))
+        w = stem + step2list[suffix];
+    }
+
+    // Step 3
+    re = /^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      suffix = fp[2];
+      re = new RegExp(mgr0);
+      if (re.test(stem))
+        w = stem + step3list[suffix];
+    }
+
+    // Step 4
+    re = /^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/;
+    re2 = /^(.+?)(s|t)(ion)$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      re = new RegExp(mgr1);
+      if (re.test(stem))
+        w = stem;
+    }
+    else if (re2.test(w)) {
+      var fp = re2.exec(w);
+      stem = fp[1] + fp[2];
+      re2 = new RegExp(mgr1);
+      if (re2.test(stem))
+        w = stem;
+    }
+
+    // Step 5
+    re = /^(.+?)e$/;
+    if (re.test(w)) {
+      var fp = re.exec(w);
+      stem = fp[1];
+      re = new RegExp(mgr1);
+      re2 = new RegExp(meq1);
+      re3 = new RegExp("^" + C + v + "[^aeiouwxy]$");
+      if (re.test(stem) || (re2.test(stem) && !(re3.test(stem))))
+        w = stem;
+    }
+    re = /ll$/;
+    re2 = new RegExp(mgr1);
+    if (re.test(w) && re2.test(w)) {
+      re = /.$/;
+      w = w.replace(re,"");
+    }
+
+    // and turn initial Y back to y
+    if (firstch == "y")
+      w = firstch.toLowerCase() + w.substr(1);
+    return w;
+  }
+}
+
+
+
+
+
+var splitChars = (function() {
+    var result = {};
+    var singles = [96, 180, 187, 191, 215, 247, 749, 885, 903, 907, 909, 930, 1014, 1648,
+         1748, 1809, 2416, 2473, 2481, 2526, 2601, 2609, 2612, 2615, 2653, 2702,
+         2706, 2729, 2737, 2740, 2857, 2865, 2868, 2910, 2928, 2948, 2961, 2971,
+         2973, 3085, 3089, 3113, 3124, 3213, 3217, 3241, 3252, 3295, 3341, 3345,
+         3369, 3506, 3516, 3633, 3715, 3721, 3736, 3744, 3748, 3750, 3756, 3761,
+         3781, 3912, 4239, 4347, 4681, 4695, 4697, 4745, 4785, 4799, 4801, 4823,
+         4881, 5760, 5901, 5997, 6313, 7405, 8024, 8026, 8028, 8030, 8117, 8125,
+         8133, 8181, 8468, 8485, 8487, 8489, 8494, 8527, 11311, 11359, 11687, 11695,
+         11703, 11711, 11719, 11727, 11735, 12448, 12539, 43010, 43014, 43019, 43587,
+         43696, 43713, 64286, 64297, 64311, 64317, 64319, 64322, 64325, 65141];
+    var i, j, start, end;
+    for (i = 0; i < singles.length; i++) {
+        result[singles[i]] = true;
+    }
+    var ranges = [[0, 47], [58, 64], [91, 94], [123, 169], [171, 177], [182, 184], [706, 709],
+         [722, 735], [741, 747], [751, 879], [888, 889], [894, 901], [1154, 1161],
+         [1318, 1328], [1367, 1368], [1370, 1376], [1416, 1487], [1515, 1519], [1523, 1568],
+         [1611, 1631], [1642, 1645], [1750, 1764], [1767, 1773], [1789, 1790], [1792, 1807],
+         [1840, 1868], [1958, 1968], [1970, 1983], [2027, 2035], [2038, 2041], [2043, 2047],
+         [2070, 2073], [2075, 2083], [2085, 2087], [2089, 2307], [2362, 2364], [2366, 2383],
+         [2385, 2391], [2402, 2405], [2419, 2424], [2432, 2436], [2445, 2446], [2449, 2450],
+         [2483, 2485], [2490, 2492], [2494, 2509], [2511, 2523], [2530, 2533], [2546, 2547],
+         [2554, 2564], [2571, 2574], [2577, 2578], [2618, 2648], [2655, 2661], [2672, 2673],
+         [2677, 2692], [2746, 2748], [2750, 2767], [2769, 2783], [2786, 2789], [2800, 2820],
+         [2829, 2830], [2833, 2834], [2874, 2876], [2878, 2907], [2914, 2917], [2930, 2946],
+         [2955, 2957], [2966, 2968], [2976, 2978], [2981, 2983], [2987, 2989], [3002, 3023],
+         [3025, 3045], [3059, 3076], [3130, 3132], [3134, 3159], [3162, 3167], [3170, 3173],
+         [3184, 3191], [3199, 3204], [3258, 3260], [3262, 3293], [3298, 3301], [3312, 3332],
+         [3386, 3388], [3390, 3423], [3426, 3429], [3446, 3449], [3456, 3460], [3479, 3481],
+         [3518, 3519], [3527, 3584], [3636, 3647], [3655, 3663], [3674, 3712], [3717, 3718],
+         [3723, 3724], [3726, 3731], [3752, 3753], [3764, 3772], [3774, 3775], [3783, 3791],
+         [3802, 3803], [3806, 3839], [3841, 3871], [3892, 3903], [3949, 3975], [3980, 4095],
+         [4139, 4158], [4170, 4175], [4182, 4185], [4190, 4192], [4194, 4196], [4199, 4205],
+         [4209, 4212], [4226, 4237], [4250, 4255], [4294, 4303], [4349, 4351], [4686, 4687],
+         [4702, 4703], [4750, 4751], [4790, 4791], [4806, 4807], [4886, 4887], [4955, 4968],
+         [4989, 4991], [5008, 5023], [5109, 5120], [5741, 5742], [5787, 5791], [5867, 5869],
+         [5873, 5887], [5906, 5919], [5938, 5951], [5970, 5983], [6001, 6015], [6068, 6102],
+         [6104, 6107], [6109, 6111], [6122, 6127], [6138, 6159], [6170, 6175], [6264, 6271],
+         [6315, 6319], [6390, 6399], [6429, 6469], [6510, 6511], [6517, 6527], [6572, 6592],
+         [6600, 6607], [6619, 6655], [6679, 6687], [6741, 6783], [6794, 6799], [6810, 6822],
+         [6824, 6916], [6964, 6980], [6988, 6991], [7002, 7042], [7073, 7085], [7098, 7167],
+         [7204, 7231], [7242, 7244], [7294, 7400], [7410, 7423], [7616, 7679], [7958, 7959],
+         [7966, 7967], [8006, 8007], [8014, 8015], [8062, 8063], [8127, 8129], [8141, 8143],
+         [8148, 8149], [8156, 8159], [8173, 8177], [8189, 8303], [8306, 8307], [8314, 8318],
+         [8330, 8335], [8341, 8449], [8451, 8454], [8456, 8457], [8470, 8472], [8478, 8483],
+         [8506, 8507], [8512, 8516], [8522, 8525], [8586, 9311], [9372, 9449], [9472, 10101],
+         [10132, 11263], [11493, 11498], [11503, 11516], [11518, 11519], [11558, 11567],
+         [11622, 11630], [11632, 11647], [11671, 11679], [11743, 11822], [11824, 12292],
+         [12296, 12320], [12330, 12336], [12342, 12343], [12349, 12352], [12439, 12444],
+         [12544, 12548], [12590, 12592], [12687, 12689], [12694, 12703], [12728, 12783],
+         [12800, 12831], [12842, 12880], [12896, 12927], [12938, 12976], [12992, 13311],
+         [19894, 19967], [40908, 40959], [42125, 42191], [42238, 42239], [42509, 42511],
+         [42540, 42559], [42592, 42593], [42607, 42622], [42648, 42655], [42736, 42774],
+         [42784, 42785], [42889, 42890], [42893, 43002], [43043, 43055], [43062, 43071],
+         [43124, 43137], [43188, 43215], [43226, 43249], [43256, 43258], [43260, 43263],
+         [43302, 43311], [43335, 43359], [43389, 43395], [43443, 43470], [43482, 43519],
+         [43561, 43583], [43596, 43599], [43610, 43615], [43639, 43641], [43643, 43647],
+         [43698, 43700], [43703, 43704], [43710, 43711], [43715, 43738], [43742, 43967],
+         [44003, 44015], [44026, 44031], [55204, 55215], [55239, 55242], [55292, 55295],
+         [57344, 63743], [64046, 64047], [64110, 64111], [64218, 64255], [64263, 64274],
+         [64280, 64284], [64434, 64466], [64830, 64847], [64912, 64913], [64968, 65007],
+         [65020, 65135], [65277, 65295], [65306, 65312], [65339, 65344], [65371, 65381],
+         [65471, 65473], [65480, 65481], [65488, 65489], [65496, 65497]];
+    for (i = 0; i < ranges.length; i++) {
+        start = ranges[i][0];
+        end = ranges[i][1];
+        for (j = start; j <= end; j++) {
+            result[j] = true;
+        }
+    }
+    return result;
+})();
+
+function splitQuery(query) {
+    var result = [];
+    var start = -1;
+    for (var i = 0; i < query.length; i++) {
+        if (splitChars[query.charCodeAt(i)]) {
+            if (start !== -1) {
+                result.push(query.slice(start, i));
+                start = -1;
+            }
+        } else if (start === -1) {
+            start = i;
+        }
+    }
+    if (start !== -1) {
+        result.push(query.slice(start));
+    }
+    return result;
+}
+
+

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/minus.png
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/minus.png
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/minus.png	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/minus.png	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/minus.png
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/plus.png
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/plus.png
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/plus.png	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/plus.png	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/plus.png
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
\ No newline at end of property
Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/pygments.css
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/pygments.css	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/pygments.css	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,69 @@
+.highlight .hll { background-color: #ffffcc }
+.highlight  { background: #eeffcc; }
+.highlight .c { color: #408090; font-style: italic } /* Comment */
+.highlight .err { border: 1px solid #FF0000 } /* Error */
+.highlight .k { color: #007020; font-weight: bold } /* Keyword */
+.highlight .o { color: #666666 } /* Operator */
+.highlight .ch { color: #408090; font-style: italic } /* Comment.Hashbang */
+.highlight .cm { color: #408090; font-style: italic } /* Comment.Multiline */
+.highlight .cp { color: #007020 } /* Comment.Preproc */
+.highlight .cpf { color: #408090; font-style: italic } /* Comment.PreprocFile */
+.highlight .c1 { color: #408090; font-style: italic } /* Comment.Single */
+.highlight .cs { color: #408090; background-color: #fff0f0 } /* Comment.Special */
+.highlight .gd { color: #A00000 } /* Generic.Deleted */
+.highlight .ge { font-style: italic } /* Generic.Emph */
+.highlight .gr { color: #FF0000 } /* Generic.Error */
+.highlight .gh { color: #000080; font-weight: bold } /* Generic.Heading */
+.highlight .gi { color: #00A000 } /* Generic.Inserted */
+.highlight .go { color: #333333 } /* Generic.Output */
+.highlight .gp { color: #c65d09; font-weight: bold } /* Generic.Prompt */
+.highlight .gs { font-weight: bold } /* Generic.Strong */
+.highlight .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
+.highlight .gt { color: #0044DD } /* Generic.Traceback */
+.highlight .kc { color: #007020; font-weight: bold } /* Keyword.Constant */
+.highlight .kd { color: #007020; font-weight: bold } /* Keyword.Declaration */
+.highlight .kn { color: #007020; font-weight: bold } /* Keyword.Namespace */
+.highlight .kp { color: #007020 } /* Keyword.Pseudo */
+.highlight .kr { color: #007020; font-weight: bold } /* Keyword.Reserved */
+.highlight .kt { color: #902000 } /* Keyword.Type */
+.highlight .m { color: #208050 } /* Literal.Number */
+.highlight .s { color: #4070a0 } /* Literal.String */
+.highlight .na { color: #4070a0 } /* Name.Attribute */
+.highlight .nb { color: #007020 } /* Name.Builtin */
+.highlight .nc { color: #0e84b5; font-weight: bold } /* Name.Class */
+.highlight .no { color: #60add5 } /* Name.Constant */
+.highlight .nd { color: #555555; font-weight: bold } /* Name.Decorator */
+.highlight .ni { color: #d55537; font-weight: bold } /* Name.Entity */
+.highlight .ne { color: #007020 } /* Name.Exception */
+.highlight .nf { color: #06287e } /* Name.Function */
+.highlight .nl { color: #002070; font-weight: bold } /* Name.Label */
+.highlight .nn { color: #0e84b5; font-weight: bold } /* Name.Namespace */
+.highlight .nt { color: #062873; font-weight: bold } /* Name.Tag */
+.highlight .nv { color: #bb60d5 } /* Name.Variable */
+.highlight .ow { color: #007020; font-weight: bold } /* Operator.Word */
+.highlight .w { color: #bbbbbb } /* Text.Whitespace */
+.highlight .mb { color: #208050 } /* Literal.Number.Bin */
+.highlight .mf { color: #208050 } /* Literal.Number.Float */
+.highlight .mh { color: #208050 } /* Literal.Number.Hex */
+.highlight .mi { color: #208050 } /* Literal.Number.Integer */
+.highlight .mo { color: #208050 } /* Literal.Number.Oct */
+.highlight .sa { color: #4070a0 } /* Literal.String.Affix */
+.highlight .sb { color: #4070a0 } /* Literal.String.Backtick */
+.highlight .sc { color: #4070a0 } /* Literal.String.Char */
+.highlight .dl { color: #4070a0 } /* Literal.String.Delimiter */
+.highlight .sd { color: #4070a0; font-style: italic } /* Literal.String.Doc */
+.highlight .s2 { color: #4070a0 } /* Literal.String.Double */
+.highlight .se { color: #4070a0; font-weight: bold } /* Literal.String.Escape */
+.highlight .sh { color: #4070a0 } /* Literal.String.Heredoc */
+.highlight .si { color: #70a0d0; font-style: italic } /* Literal.String.Interpol */
+.highlight .sx { color: #c65d09 } /* Literal.String.Other */
+.highlight .sr { color: #235388 } /* Literal.String.Regex */
+.highlight .s1 { color: #4070a0 } /* Literal.String.Single */
+.highlight .ss { color: #517918 } /* Literal.String.Symbol */
+.highlight .bp { color: #007020 } /* Name.Builtin.Pseudo */
+.highlight .fm { color: #06287e } /* Name.Function.Magic */
+.highlight .vc { color: #bb60d5 } /* Name.Variable.Class */
+.highlight .vg { color: #bb60d5 } /* Name.Variable.Global */
+.highlight .vi { color: #bb60d5 } /* Name.Variable.Instance */
+.highlight .vm { color: #bb60d5 } /* Name.Variable.Magic */
+.highlight .il { color: #208050 } /* Literal.Number.Integer.Long */
\ No newline at end of file

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/searchtools.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/searchtools.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/searchtools.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,481 @@
+/*
+ * searchtools.js
+ * ~~~~~~~~~~~~~~~~
+ *
+ * Sphinx JavaScript utilities for the full-text search.
+ *
+ * :copyright: Copyright 2007-2019 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+if (!Scorer) {
+  /**
+   * Simple result scoring code.
+   */
+  var Scorer = {
+    // Implement the following function to further tweak the score for each result
+    // The function takes a result array [filename, title, anchor, descr, score]
+    // and returns the new score.
+    /*
+    score: function(result) {
+      return result[4];
+    },
+    */
+
+    // query matches the full name of an object
+    objNameMatch: 11,
+    // or matches in the last dotted part of the object name
+    objPartialMatch: 6,
+    // Additive scores depending on the priority of the object
+    objPrio: {0:  15,   // used to be importantResults
+              1:  5,   // used to be objectResults
+              2: -5},  // used to be unimportantResults
+    //  Used when the priority is not in the mapping.
+    objPrioDefault: 0,
+
+    // query found in title
+    title: 15,
+    // query found in terms
+    term: 5
+  };
+}
+
+if (!splitQuery) {
+  function splitQuery(query) {
+    return query.split(/\s+/);
+  }
+}
+
+/**
+ * Search Module
+ */
+var Search = {
+
+  _index : null,
+  _queued_query : null,
+  _pulse_status : -1,
+
+  init : function() {
+      var params = $.getQueryParameters();
+      if (params.q) {
+          var query = params.q[0];
+          $('input[name="q"]')[0].value = query;
+          this.performSearch(query);
+      }
+  },
+
+  loadIndex : function(url) {
+    $.ajax({type: "GET", url: url, data: null,
+            dataType: "script", cache: true,
+            complete: function(jqxhr, textstatus) {
+              if (textstatus != "success") {
+                document.getElementById("searchindexloader").src = url;
+              }
+            }});
+  },
+
+  setIndex : function(index) {
+    var q;
+    this._index = index;
+    if ((q = this._queued_query) !== null) {
+      this._queued_query = null;
+      Search.query(q);
+    }
+  },
+
+  hasIndex : function() {
+      return this._index !== null;
+  },
+
+  deferQuery : function(query) {
+      this._queued_query = query;
+  },
+
+  stopPulse : function() {
+      this._pulse_status = 0;
+  },
+
+  startPulse : function() {
+    if (this._pulse_status >= 0)
+        return;
+    function pulse() {
+      var i;
+      Search._pulse_status = (Search._pulse_status + 1) % 4;
+      var dotString = '';
+      for (i = 0; i < Search._pulse_status; i++)
+        dotString += '.';
+      Search.dots.text(dotString);
+      if (Search._pulse_status > -1)
+        window.setTimeout(pulse, 500);
+    }
+    pulse();
+  },
+
+  /**
+   * perform a search for something (or wait until index is loaded)
+   */
+  performSearch : function(query) {
+    // create the required interface elements
+    this.out = $('#search-results');
+    this.title = $('<h2>' + _('Searching') + '</h2>').appendTo(this.out);
+    this.dots = $('<span></span>').appendTo(this.title);
+    this.status = $('<p style="display: none"></p>').appendTo(this.out);
+    this.output = $('<ul class="search"/>').appendTo(this.out);
+
+    $('#search-progress').text(_('Preparing search...'));
+    this.startPulse();
+
+    // index already loaded, the browser was quick!
+    if (this.hasIndex())
+      this.query(query);
+    else
+      this.deferQuery(query);
+  },
+
+  /**
+   * execute search (requires search index to be loaded)
+   */
+  query : function(query) {
+    var i;
+
+    // stem the searchterms and add them to the correct list
+    var stemmer = new Stemmer();
+    var searchterms = [];
+    var excluded = [];
+    var hlterms = [];
+    var tmp = splitQuery(query);
+    var objectterms = [];
+    for (i = 0; i < tmp.length; i++) {
+      if (tmp[i] !== "") {
+          objectterms.push(tmp[i].toLowerCase());
+      }
+
+      if ($u.indexOf(stopwords, tmp[i].toLowerCase()) != -1 || tmp[i].match(/^\d+$/) ||
+          tmp[i] === "") {
+        // skip this "word"
+        continue;
+      }
+      // stem the word
+      var word = stemmer.stemWord(tmp[i].toLowerCase());
+      // prevent stemmer from cutting word smaller than two chars
+      if(word.length < 3 && tmp[i].length >= 3) {
+        word = tmp[i];
+      }
+      var toAppend;
+      // select the correct list
+      if (word[0] == '-') {
+        toAppend = excluded;
+        word = word.substr(1);
+      }
+      else {
+        toAppend = searchterms;
+        hlterms.push(tmp[i].toLowerCase());
+      }
+      // only add if not already in the list
+      if (!$u.contains(toAppend, word))
+        toAppend.push(word);
+    }
+    var highlightstring = '?highlight=' + $.urlencode(hlterms.join(" "));
+
+    // console.debug('SEARCH: searching for:');
+    // console.info('required: ', searchterms);
+    // console.info('excluded: ', excluded);
+
+    // prepare search
+    var terms = this._index.terms;
+    var titleterms = this._index.titleterms;
+
+    // array of [filename, title, anchor, descr, score]
+    var results = [];
+    $('#search-progress').empty();
+
+    // lookup as object
+    for (i = 0; i < objectterms.length; i++) {
+      var others = [].concat(objectterms.slice(0, i),
+                             objectterms.slice(i+1, objectterms.length));
+      results = results.concat(this.performObjectSearch(objectterms[i], others));
+    }
+
+    // lookup as search terms in fulltext
+    results = results.concat(this.performTermsSearch(searchterms, excluded, terms, titleterms));
+
+    // let the scorer override scores with a custom scoring function
+    if (Scorer.score) {
+      for (i = 0; i < results.length; i++)
+        results[i][4] = Scorer.score(results[i]);
+    }
+
+    // now sort the results by score (in opposite order of appearance, since the
+    // display function below uses pop() to retrieve items) and then
+    // alphabetically
+    results.sort(function(a, b) {
+      var left = a[4];
+      var right = b[4];
+      if (left > right) {
+        return 1;
+      } else if (left < right) {
+        return -1;
+      } else {
+        // same score: sort alphabetically
+        left = a[1].toLowerCase();
+        right = b[1].toLowerCase();
+        return (left > right) ? -1 : ((left < right) ? 1 : 0);
+      }
+    });
+
+    // for debugging
+    //Search.lastresults = results.slice();  // a copy
+    //console.info('search results:', Search.lastresults);
+
+    // print the results
+    var resultCount = results.length;
+    function displayNextItem() {
+      // results left, load the summary and display it
+      if (results.length) {
+        var item = results.pop();
+        var listItem = $('<li style="display:none"></li>');
+        if (DOCUMENTATION_OPTIONS.FILE_SUFFIX === '') {
+          // dirhtml builder
+          var dirname = item[0] + '/';
+          if (dirname.match(/\/index\/$/)) {
+            dirname = dirname.substring(0, dirname.length-6);
+          } else if (dirname == 'index/') {
+            dirname = '';
+          }
+          listItem.append($('<a/>').attr('href',
+            DOCUMENTATION_OPTIONS.URL_ROOT + dirname +
+            highlightstring + item[2]).html(item[1]));
+        } else {
+          // normal html builders
+          listItem.append($('<a/>').attr('href',
+            item[0] + DOCUMENTATION_OPTIONS.FILE_SUFFIX +
+            highlightstring + item[2]).html(item[1]));
+        }
+        if (item[3]) {
+          listItem.append($('<span> (' + item[3] + ')</span>'));
+          Search.output.append(listItem);
+          listItem.slideDown(5, function() {
+            displayNextItem();
+          });
+        } else if (DOCUMENTATION_OPTIONS.HAS_SOURCE) {
+          var suffix = DOCUMENTATION_OPTIONS.SOURCELINK_SUFFIX;
+          if (suffix === undefined) {
+            suffix = '.txt';
+          }
+          $.ajax({url: DOCUMENTATION_OPTIONS.URL_ROOT + '_sources/' + item[5] + (item[5].slice(-suffix.length) === suffix ? '' : suffix),
+                  dataType: "text",
+                  complete: function(jqxhr, textstatus) {
+                    var data = jqxhr.responseText;
+                    if (data !== '' && data !== undefined) {
+                      listItem.append(Search.makeSearchSummary(data, searchterms, hlterms));
+                    }
+                    Search.output.append(listItem);
+                    listItem.slideDown(5, function() {
+                      displayNextItem();
+                    });
+                  }});
+        } else {
+          // no source available, just display title
+          Search.output.append(listItem);
+          listItem.slideDown(5, function() {
+            displayNextItem();
+          });
+        }
+      }
+      // search finished, update title and status message
+      else {
+        Search.stopPulse();
+        Search.title.text(_('Search Results'));
+        if (!resultCount)
+          Search.status.text(_('Your search did not match any documents. Please make sure that all words are spelled correctly and that you\'ve selected enough categories.'));
+        else
+            Search.status.text(_('Search finished, found %s page(s) matching the search query.').replace('%s', resultCount));
+        Search.status.fadeIn(500);
+      }
+    }
+    displayNextItem();
+  },
+
+  /**
+   * search for object names
+   */
+  performObjectSearch : function(object, otherterms) {
+    var filenames = this._index.filenames;
+    var docnames = this._index.docnames;
+    var objects = this._index.objects;
+    var objnames = this._index.objnames;
+    var titles = this._index.titles;
+
+    var i;
+    var results = [];
+
+    for (var prefix in objects) {
+      for (var name in objects[prefix]) {
+        var fullname = (prefix ? prefix + '.' : '') + name;
+        if (fullname.toLowerCase().indexOf(object) > -1) {
+          var score = 0;
+          var parts = fullname.split('.');
+          // check for different match types: exact matches of full name or
+          // "last name" (i.e. last dotted part)
+          if (fullname == object || parts[parts.length - 1] == object) {
+            score += Scorer.objNameMatch;
+          // matches in last name
+          } else if (parts[parts.length - 1].indexOf(object) > -1) {
+            score += Scorer.objPartialMatch;
+          }
+          var match = objects[prefix][name];
+          var objname = objnames[match[1]][2];
+          var title = titles[match[0]];
+          // If more than one term searched for, we require other words to be
+          // found in the name/title/description
+          if (otherterms.length > 0) {
+            var haystack = (prefix + ' ' + name + ' ' +
+                            objname + ' ' + title).toLowerCase();
+            var allfound = true;
+            for (i = 0; i < otherterms.length; i++) {
+              if (haystack.indexOf(otherterms[i]) == -1) {
+                allfound = false;
+                break;
+              }
+            }
+            if (!allfound) {
+              continue;
+            }
+          }
+          var descr = objname + _(', in ') + title;
+
+          var anchor = match[3];
+          if (anchor === '')
+            anchor = fullname;
+          else if (anchor == '-')
+            anchor = objnames[match[1]][1] + '-' + fullname;
+          // add custom score for some objects according to scorer
+          if (Scorer.objPrio.hasOwnProperty(match[2])) {
+            score += Scorer.objPrio[match[2]];
+          } else {
+            score += Scorer.objPrioDefault;
+          }
+          results.push([docnames[match[0]], fullname, '#'+anchor, descr, score, filenames[match[0]]]);
+        }
+      }
+    }
+
+    return results;
+  },
+
+  /**
+   * search for full-text terms in the index
+   */
+  performTermsSearch : function(searchterms, excluded, terms, titleterms) {
+    var docnames = this._index.docnames;
+    var filenames = this._index.filenames;
+    var titles = this._index.titles;
+
+    var i, j, file;
+    var fileMap = {};
+    var scoreMap = {};
+    var results = [];
+
+    // perform the search on the required terms
+    for (i = 0; i < searchterms.length; i++) {
+      var word = searchterms[i];
+      var files = [];
+      var _o = [
+        {files: terms[word], score: Scorer.term},
+        {files: titleterms[word], score: Scorer.title}
+      ];
+
+      // no match but word was a required one
+      if ($u.every(_o, function(o){return o.files === undefined;})) {
+        break;
+      }
+      // found search word in contents
+      $u.each(_o, function(o) {
+        var _files = o.files;
+        if (_files === undefined)
+          return
+
+        if (_files.length === undefined)
+          _files = [_files];
+        files = files.concat(_files);
+
+        // set score for the word in each file to Scorer.term
+        for (j = 0; j < _files.length; j++) {
+          file = _files[j];
+          if (!(file in scoreMap))
+            scoreMap[file] = {}
+          scoreMap[file][word] = o.score;
+        }
+      });
+
+      // create the mapping
+      for (j = 0; j < files.length; j++) {
+        file = files[j];
+        if (file in fileMap)
+          fileMap[file].push(word);
+        else
+          fileMap[file] = [word];
+      }
+    }
+
+    // now check if the files don't contain excluded terms
+    for (file in fileMap) {
+      var valid = true;
+
+      // check if all requirements are matched
+      if (fileMap[file].length != searchterms.length)
+          continue;
+
+      // ensure that none of the excluded terms is in the search result
+      for (i = 0; i < excluded.length; i++) {
+        if (terms[excluded[i]] == file ||
+            titleterms[excluded[i]] == file ||
+            $u.contains(terms[excluded[i]] || [], file) ||
+            $u.contains(titleterms[excluded[i]] || [], file)) {
+          valid = false;
+          break;
+        }
+      }
+
+      // if we have still a valid result we can add it to the result list
+      if (valid) {
+        // select one (max) score for the file.
+        // for better ranking, we should calculate ranking by using words statistics like basic tf-idf...
+        var score = $u.max($u.map(fileMap[file], function(w){return scoreMap[file][w]}));
+        results.push([docnames[file], titles[file], '', null, score, filenames[file]]);
+      }
+    }
+    return results;
+  },
+
+  /**
+   * helper function to return a node containing the
+   * search summary for a given text. keywords is a list
+   * of stemmed words, hlwords is the list of normal, unstemmed
+   * words. the first one is used to find the occurrence, the
+   * latter for highlighting it.
+   */
+  makeSearchSummary : function(text, keywords, hlwords) {
+    var textLower = text.toLowerCase();
+    var start = 0;
+    $.each(keywords, function() {
+      var i = textLower.indexOf(this.toLowerCase());
+      if (i > -1)
+        start = i;
+    });
+    start = Math.max(start - 120, 0);
+    var excerpt = ((start > 0) ? '...' : '') +
+      $.trim(text.substr(start, 240)) +
+      ((start + 240 - text.length) ? '...' : '');
+    var rv = $('<div class="context"></div>').text(excerpt);
+    $.each(hlwords, function() {
+      rv = rv.highlightText(this, 'highlighted');
+    });
+    return rv;
+  }
+};
+
+$(document).ready(function() {
+  Search.init();
+});

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/underscore-1.3.1.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/underscore-1.3.1.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/underscore-1.3.1.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,999 @@
+//     Underscore.js 1.3.1
+//     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
+//     Underscore is freely distributable under the MIT license.
+//     Portions of Underscore are inspired or borrowed from Prototype,
+//     Oliver Steele's Functional, and John Resig's Micro-Templating.
+//     For all details and documentation:
+//     http://documentcloud.github.com/underscore
+
+(function() {
+
+  // Baseline setup
+  // --------------
+
+  // Establish the root object, `window` in the browser, or `global` on the server.
+  var root = this;
+
+  // Save the previous value of the `_` variable.
+  var previousUnderscore = root._;
+
+  // Establish the object that gets returned to break out of a loop iteration.
+  var breaker = {};
+
+  // Save bytes in the minified (but not gzipped) version:
+  var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
+
+  // Create quick reference variables for speed access to core prototypes.
+  var slice            = ArrayProto.slice,
+      unshift          = ArrayProto.unshift,
+      toString         = ObjProto.toString,
+      hasOwnProperty   = ObjProto.hasOwnProperty;
+
+  // All **ECMAScript 5** native function implementations that we hope to use
+  // are declared here.
+  var
+    nativeForEach      = ArrayProto.forEach,
+    nativeMap          = ArrayProto.map,
+    nativeReduce       = ArrayProto.reduce,
+    nativeReduceRight  = ArrayProto.reduceRight,
+    nativeFilter       = ArrayProto.filter,
+    nativeEvery        = ArrayProto.every,
+    nativeSome         = ArrayProto.some,
+    nativeIndexOf      = ArrayProto.indexOf,
+    nativeLastIndexOf  = ArrayProto.lastIndexOf,
+    nativeIsArray      = Array.isArray,
+    nativeKeys         = Object.keys,
+    nativeBind         = FuncProto.bind;
+
+  // Create a safe reference to the Underscore object for use below.
+  var _ = function(obj) { return new wrapper(obj); };
+
+  // Export the Underscore object for **Node.js**, with
+  // backwards-compatibility for the old `require()` API. If we're in
+  // the browser, add `_` as a global object via a string identifier,
+  // for Closure Compiler "advanced" mode.
+  if (typeof exports !== 'undefined') {
+    if (typeof module !== 'undefined' && module.exports) {
+      exports = module.exports = _;
+    }
+    exports._ = _;
+  } else {
+    root['_'] = _;
+  }
+
+  // Current version.
+  _.VERSION = '1.3.1';
+
+  // Collection Functions
+  // --------------------
+
+  // The cornerstone, an `each` implementation, aka `forEach`.
+  // Handles objects with the built-in `forEach`, arrays, and raw objects.
+  // Delegates to **ECMAScript 5**'s native `forEach` if available.
+  var each = _.each = _.forEach = function(obj, iterator, context) {
+    if (obj == null) return;
+    if (nativeForEach && obj.forEach === nativeForEach) {
+      obj.forEach(iterator, context);
+    } else if (obj.length === +obj.length) {
+      for (var i = 0, l = obj.length; i < l; i++) {
+        if (i in obj && iterator.call(context, obj[i], i, obj) === breaker) return;
+      }
+    } else {
+      for (var key in obj) {
+        if (_.has(obj, key)) {
+          if (iterator.call(context, obj[key], key, obj) === breaker) return;
+        }
+      }
+    }
+  };
+
+  // Return the results of applying the iterator to each element.
+  // Delegates to **ECMAScript 5**'s native `map` if available.
+  _.map = _.collect = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeMap && obj.map === nativeMap) return obj.map(iterator, context);
+    each(obj, function(value, index, list) {
+      results[results.length] = iterator.call(context, value, index, list);
+    });
+    if (obj.length === +obj.length) results.length = obj.length;
+    return results;
+  };
+
+  // **Reduce** builds up a single result from a list of values, aka `inject`,
+  // or `foldl`. Delegates to **ECMAScript 5**'s native `reduce` if available.
+  _.reduce = _.foldl = _.inject = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduce && obj.reduce === nativeReduce) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduce(iterator, memo) : obj.reduce(iterator);
+    }
+    each(obj, function(value, index, list) {
+      if (!initial) {
+        memo = value;
+        initial = true;
+      } else {
+        memo = iterator.call(context, memo, value, index, list);
+      }
+    });
+    if (!initial) throw new TypeError('Reduce of empty array with no initial value');
+    return memo;
+  };
+
+  // The right-associative version of reduce, also known as `foldr`.
+  // Delegates to **ECMAScript 5**'s native `reduceRight` if available.
+  _.reduceRight = _.foldr = function(obj, iterator, memo, context) {
+    var initial = arguments.length > 2;
+    if (obj == null) obj = [];
+    if (nativeReduceRight && obj.reduceRight === nativeReduceRight) {
+      if (context) iterator = _.bind(iterator, context);
+      return initial ? obj.reduceRight(iterator, memo) : obj.reduceRight(iterator);
+    }
+    var reversed = _.toArray(obj).reverse();
+    if (context && !initial) iterator = _.bind(iterator, context);
+    return initial ? _.reduce(reversed, iterator, memo, context) : _.reduce(reversed, iterator);
+  };
+
+  // Return the first value which passes a truth test. Aliased as `detect`.
+  _.find = _.detect = function(obj, iterator, context) {
+    var result;
+    any(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) {
+        result = value;
+        return true;
+      }
+    });
+    return result;
+  };
+
+  // Return all the elements that pass a truth test.
+  // Delegates to **ECMAScript 5**'s native `filter` if available.
+  // Aliased as `select`.
+  _.filter = _.select = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    if (nativeFilter && obj.filter === nativeFilter) return obj.filter(iterator, context);
+    each(obj, function(value, index, list) {
+      if (iterator.call(context, value, index, list)) results[results.length] = value;
+    });
+    return results;
+  };
+
+  // Return all the elements for which a truth test fails.
+  _.reject = function(obj, iterator, context) {
+    var results = [];
+    if (obj == null) return results;
+    each(obj, function(value, index, list) {
+      if (!iterator.call(context, value, index, list)) results[results.length] = value;
+    });
+    return results;
+  };
+
+  // Determine whether all of the elements match a truth test.
+  // Delegates to **ECMAScript 5**'s native `every` if available.
+  // Aliased as `all`.
+  _.every = _.all = function(obj, iterator, context) {
+    var result = true;
+    if (obj == null) return result;
+    if (nativeEvery && obj.every === nativeEvery) return obj.every(iterator, context);
+    each(obj, function(value, index, list) {
+      if (!(result = result && iterator.call(context, value, index, list))) return breaker;
+    });
+    return result;
+  };
+
+  // Determine if at least one element in the object matches a truth test.
+  // Delegates to **ECMAScript 5**'s native `some` if available.
+  // Aliased as `any`.
+  var any = _.some = _.any = function(obj, iterator, context) {
+    iterator || (iterator = _.identity);
+    var result = false;
+    if (obj == null) return result;
+    if (nativeSome && obj.some === nativeSome) return obj.some(iterator, context);
+    each(obj, function(value, index, list) {
+      if (result || (result = iterator.call(context, value, index, list))) return breaker;
+    });
+    return !!result;
+  };
+
+  // Determine if a given value is included in the array or object using `===`.
+  // Aliased as `contains`.
+  _.include = _.contains = function(obj, target) {
+    var found = false;
+    if (obj == null) return found;
+    if (nativeIndexOf && obj.indexOf === nativeIndexOf) return obj.indexOf(target) != -1;
+    found = any(obj, function(value) {
+      return value === target;
+    });
+    return found;
+  };
+
+  // Invoke a method (with arguments) on every item in a collection.
+  _.invoke = function(obj, method) {
+    var args = slice.call(arguments, 2);
+    return _.map(obj, function(value) {
+      return (_.isFunction(method) ? method || value : value[method]).apply(value, args);
+    });
+  };
+
+  // Convenience version of a common use case of `map`: fetching a property.
+  _.pluck = function(obj, key) {
+    return _.map(obj, function(value){ return value[key]; });
+  };
+
+  // Return the maximum element or (element-based computation).
+  _.max = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj)) return Math.max.apply(Math, obj);
+    if (!iterator && _.isEmpty(obj)) return -Infinity;
+    var result = {computed : -Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed >= result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Return the minimum element (or element-based computation).
+  _.min = function(obj, iterator, context) {
+    if (!iterator && _.isArray(obj)) return Math.min.apply(Math, obj);
+    if (!iterator && _.isEmpty(obj)) return Infinity;
+    var result = {computed : Infinity};
+    each(obj, function(value, index, list) {
+      var computed = iterator ? iterator.call(context, value, index, list) : value;
+      computed < result.computed && (result = {value : value, computed : computed});
+    });
+    return result.value;
+  };
+
+  // Shuffle an array.
+  _.shuffle = function(obj) {
+    var shuffled = [], rand;
+    each(obj, function(value, index, list) {
+      if (index == 0) {
+        shuffled[0] = value;
+      } else {
+        rand = Math.floor(Math.random() * (index + 1));
+        shuffled[index] = shuffled[rand];
+        shuffled[rand] = value;
+      }
+    });
+    return shuffled;
+  };
+
+  // Sort the object's values by a criterion produced by an iterator.
+  _.sortBy = function(obj, iterator, context) {
+    return _.pluck(_.map(obj, function(value, index, list) {
+      return {
+        value : value,
+        criteria : iterator.call(context, value, index, list)
+      };
+    }).sort(function(left, right) {
+      var a = left.criteria, b = right.criteria;
+      return a < b ? -1 : a > b ? 1 : 0;
+    }), 'value');
+  };
+
+  // Groups the object's values by a criterion. Pass either a string attribute
+  // to group by, or a function that returns the criterion.
+  _.groupBy = function(obj, val) {
+    var result = {};
+    var iterator = _.isFunction(val) ? val : function(obj) { return obj[val]; };
+    each(obj, function(value, index) {
+      var key = iterator(value, index);
+      (result[key] || (result[key] = [])).push(value);
+    });
+    return result;
+  };
+
+  // Use a comparator function to figure out at what index an object should
+  // be inserted so as to maintain order. Uses binary search.
+  _.sortedIndex = function(array, obj, iterator) {
+    iterator || (iterator = _.identity);
+    var low = 0, high = array.length;
+    while (low < high) {
+      var mid = (low + high) >> 1;
+      iterator(array[mid]) < iterator(obj) ? low = mid + 1 : high = mid;
+    }
+    return low;
+  };
+
+  // Safely convert anything iterable into a real, live array.
+  _.toArray = function(iterable) {
+    if (!iterable)                return [];
+    if (iterable.toArray)         return iterable.toArray();
+    if (_.isArray(iterable))      return slice.call(iterable);
+    if (_.isArguments(iterable))  return slice.call(iterable);
+    return _.values(iterable);
+  };
+
+  // Return the number of elements in an object.
+  _.size = function(obj) {
+    return _.toArray(obj).length;
+  };
+
+  // Array Functions
+  // ---------------
+
+  // Get the first element of an array. Passing **n** will return the first N
+  // values in the array. Aliased as `head`. The **guard** check allows it to work
+  // with `_.map`.
+  _.first = _.head = function(array, n, guard) {
+    return (n != null) && !guard ? slice.call(array, 0, n) : array[0];
+  };
+
+  // Returns everything but the last entry of the array. Especcialy useful on
+  // the arguments object. Passing **n** will return all the values in
+  // the array, excluding the last N. The **guard** check allows it to work with
+  // `_.map`.
+  _.initial = function(array, n, guard) {
+    return slice.call(array, 0, array.length - ((n == null) || guard ? 1 : n));
+  };
+
+  // Get the last element of an array. Passing **n** will return the last N
+  // values in the array. The **guard** check allows it to work with `_.map`.
+  _.last = function(array, n, guard) {
+    if ((n != null) && !guard) {
+      return slice.call(array, Math.max(array.length - n, 0));
+    } else {
+      return array[array.length - 1];
+    }
+  };
+
+  // Returns everything but the first entry of the array. Aliased as `tail`.
+  // Especially useful on the arguments object. Passing an **index** will return
+  // the rest of the values in the array from that index onward. The **guard**
+  // check allows it to work with `_.map`.
+  _.rest = _.tail = function(array, index, guard) {
+    return slice.call(array, (index == null) || guard ? 1 : index);
+  };
+
+  // Trim out all falsy values from an array.
+  _.compact = function(array) {
+    return _.filter(array, function(value){ return !!value; });
+  };
+
+  // Return a completely flattened version of an array.
+  _.flatten = function(array, shallow) {
+    return _.reduce(array, function(memo, value) {
+      if (_.isArray(value)) return memo.concat(shallow ? value : _.flatten(value));
+      memo[memo.length] = value;
+      return memo;
+    }, []);
+  };
+
+  // Return a version of the array that does not contain the specified value(s).
+  _.without = function(array) {
+    return _.difference(array, slice.call(arguments, 1));
+  };
+
+  // Produce a duplicate-free version of the array. If the array has already
+  // been sorted, you have the option of using a faster algorithm.
+  // Aliased as `unique`.
+  _.uniq = _.unique = function(array, isSorted, iterator) {
+    var initial = iterator ? _.map(array, iterator) : array;
+    var result = [];
+    _.reduce(initial, function(memo, el, i) {
+      if (0 == i || (isSorted === true ? _.last(memo) != el : !_.include(memo, el))) {
+        memo[memo.length] = el;
+        result[result.length] = array[i];
+      }
+      return memo;
+    }, []);
+    return result;
+  };
+
+  // Produce an array that contains the union: each distinct element from all of
+  // the passed-in arrays.
+  _.union = function() {
+    return _.uniq(_.flatten(arguments, true));
+  };
+
+  // Produce an array that contains every item shared between all the
+  // passed-in arrays. (Aliased as "intersect" for back-compat.)
+  _.intersection = _.intersect = function(array) {
+    var rest = slice.call(arguments, 1);
+    return _.filter(_.uniq(array), function(item) {
+      return _.every(rest, function(other) {
+        return _.indexOf(other, item) >= 0;
+      });
+    });
+  };
+
+  // Take the difference between one array and a number of other arrays.
+  // Only the elements present in just the first array will remain.
+  _.difference = function(array) {
+    var rest = _.flatten(slice.call(arguments, 1));
+    return _.filter(array, function(value){ return !_.include(rest, value); });
+  };
+
+  // Zip together multiple lists into a single array -- elements that share
+  // an index go together.
+  _.zip = function() {
+    var args = slice.call(arguments);
+    var length = _.max(_.pluck(args, 'length'));
+    var results = new Array(length);
+    for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
+    return results;
+  };
+
+  // If the browser doesn't supply us with indexOf (I'm looking at you, **MSIE**),
+  // we need this function. Return the position of the first occurrence of an
+  // item in an array, or -1 if the item is not included in the array.
+  // Delegates to **ECMAScript 5**'s native `indexOf` if available.
+  // If the array is large and already in sort order, pass `true`
+  // for **isSorted** to use binary search.
+  _.indexOf = function(array, item, isSorted) {
+    if (array == null) return -1;
+    var i, l;
+    if (isSorted) {
+      i = _.sortedIndex(array, item);
+      return array[i] === item ? i : -1;
+    }
+    if (nativeIndexOf && array.indexOf === nativeIndexOf) return array.indexOf(item);
+    for (i = 0, l = array.length; i < l; i++) if (i in array && array[i] === item) return i;
+    return -1;
+  };
+
+  // Delegates to **ECMAScript 5**'s native `lastIndexOf` if available.
+  _.lastIndexOf = function(array, item) {
+    if (array == null) return -1;
+    if (nativeLastIndexOf && array.lastIndexOf === nativeLastIndexOf) return array.lastIndexOf(item);
+    var i = array.length;
+    while (i--) if (i in array && array[i] === item) return i;
+    return -1;
+  };
+
+  // Generate an integer Array containing an arithmetic progression. A port of
+  // the native Python `range()` function. See
+  // [the Python documentation](http://docs.python.org/library/functions.html#range).
+  _.range = function(start, stop, step) {
+    if (arguments.length <= 1) {
+      stop = start || 0;
+      start = 0;
+    }
+    step = arguments[2] || 1;
+
+    var len = Math.max(Math.ceil((stop - start) / step), 0);
+    var idx = 0;
+    var range = new Array(len);
+
+    while(idx < len) {
+      range[idx++] = start;
+      start += step;
+    }
+
+    return range;
+  };
+
+  // Function (ahem) Functions
+  // ------------------
+
+  // Reusable constructor function for prototype setting.
+  var ctor = function(){};
+
+  // Create a function bound to a given object (assigning `this`, and arguments,
+  // optionally). Binding with arguments is also known as `curry`.
+  // Delegates to **ECMAScript 5**'s native `Function.bind` if available.
+  // We check for `func.bind` first, to fail fast when `func` is undefined.
+  _.bind = function bind(func, context) {
+    var bound, args;
+    if (func.bind === nativeBind && nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
+    if (!_.isFunction(func)) throw new TypeError;
+    args = slice.call(arguments, 2);
+    return bound = function() {
+      if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
+      ctor.prototype = func.prototype;
+      var self = new ctor;
+      var result = func.apply(self, args.concat(slice.call(arguments)));
+      if (Object(result) === result) return result;
+      return self;
+    };
+  };
+
+  // Bind all of an object's methods to that object. Useful for ensuring that
+  // all callbacks defined on an object belong to it.
+  _.bindAll = function(obj) {
+    var funcs = slice.call(arguments, 1);
+    if (funcs.length == 0) funcs = _.functions(obj);
+    each(funcs, function(f) { obj[f] = _.bind(obj[f], obj); });
+    return obj;
+  };
+
+  // Memoize an expensive function by storing its results.
+  _.memoize = function(func, hasher) {
+    var memo = {};
+    hasher || (hasher = _.identity);
+    return function() {
+      var key = hasher.apply(this, arguments);
+      return _.has(memo, key) ? memo[key] : (memo[key] = func.apply(this, arguments));
+    };
+  };
+
+  // Delays a function for the given number of milliseconds, and then calls
+  // it with the arguments supplied.
+  _.delay = function(func, wait) {
+    var args = slice.call(arguments, 2);
+    return setTimeout(function(){ return func.apply(func, args); }, wait);
+  };
+
+  // Defers a function, scheduling it to run after the current call stack has
+  // cleared.
+  _.defer = function(func) {
+    return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
+  };
+
+  // Returns a function, that, when invoked, will only be triggered at most once
+  // during a given window of time.
+  _.throttle = function(func, wait) {
+    var context, args, timeout, throttling, more;
+    var whenDone = _.debounce(function(){ more = throttling = false; }, wait);
+    return function() {
+      context = this; args = arguments;
+      var later = function() {
+        timeout = null;
+        if (more) func.apply(context, args);
+        whenDone();
+      };
+      if (!timeout) timeout = setTimeout(later, wait);
+      if (throttling) {
+        more = true;
+      } else {
+        func.apply(context, args);
+      }
+      whenDone();
+      throttling = true;
+    };
+  };
+
+  // Returns a function, that, as long as it continues to be invoked, will not
+  // be triggered. The function will be called after it stops being called for
+  // N milliseconds.
+  _.debounce = function(func, wait) {
+    var timeout;
+    return function() {
+      var context = this, args = arguments;
+      var later = function() {
+        timeout = null;
+        func.apply(context, args);
+      };
+      clearTimeout(timeout);
+      timeout = setTimeout(later, wait);
+    };
+  };
+
+  // Returns a function that will be executed at most one time, no matter how
+  // often you call it. Useful for lazy initialization.
+  _.once = function(func) {
+    var ran = false, memo;
+    return function() {
+      if (ran) return memo;
+      ran = true;
+      return memo = func.apply(this, arguments);
+    };
+  };
+
+  // Returns the first function passed as an argument to the second,
+  // allowing you to adjust arguments, run code before and after, and
+  // conditionally execute the original function.
+  _.wrap = function(func, wrapper) {
+    return function() {
+      var args = [func].concat(slice.call(arguments, 0));
+      return wrapper.apply(this, args);
+    };
+  };
+
+  // Returns a function that is the composition of a list of functions, each
+  // consuming the return value of the function that follows.
+  _.compose = function() {
+    var funcs = arguments;
+    return function() {
+      var args = arguments;
+      for (var i = funcs.length - 1; i >= 0; i--) {
+        args = [funcs[i].apply(this, args)];
+      }
+      return args[0];
+    };
+  };
+
+  // Returns a function that will only be executed after being called N times.
+  _.after = function(times, func) {
+    if (times <= 0) return func();
+    return function() {
+      if (--times < 1) { return func.apply(this, arguments); }
+    };
+  };
+
+  // Object Functions
+  // ----------------
+
+  // Retrieve the names of an object's properties.
+  // Delegates to **ECMAScript 5**'s native `Object.keys`
+  _.keys = nativeKeys || function(obj) {
+    if (obj !== Object(obj)) throw new TypeError('Invalid object');
+    var keys = [];
+    for (var key in obj) if (_.has(obj, key)) keys[keys.length] = key;
+    return keys;
+  };
+
+  // Retrieve the values of an object's properties.
+  _.values = function(obj) {
+    return _.map(obj, _.identity);
+  };
+
+  // Return a sorted list of the function names available on the object.
+  // Aliased as `methods`
+  _.functions = _.methods = function(obj) {
+    var names = [];
+    for (var key in obj) {
+      if (_.isFunction(obj[key])) names.push(key);
+    }
+    return names.sort();
+  };
+
+  // Extend a given object with all the properties in passed-in object(s).
+  _.extend = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      for (var prop in source) {
+        obj[prop] = source[prop];
+      }
+    });
+    return obj;
+  };
+
+  // Fill in a given object with default properties.
+  _.defaults = function(obj) {
+    each(slice.call(arguments, 1), function(source) {
+      for (var prop in source) {
+        if (obj[prop] == null) obj[prop] = source[prop];
+      }
+    });
+    return obj;
+  };
+
+  // Create a (shallow-cloned) duplicate of an object.
+  _.clone = function(obj) {
+    if (!_.isObject(obj)) return obj;
+    return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
+  };
+
+  // Invokes interceptor with the obj, and then returns obj.
+  // The primary purpose of this method is to "tap into" a method chain, in
+  // order to perform operations on intermediate results within the chain.
+  _.tap = function(obj, interceptor) {
+    interceptor(obj);
+    return obj;
+  };
+
+  // Internal recursive comparison function.
+  function eq(a, b, stack) {
+    // Identical objects are equal. `0 === -0`, but they aren't identical.
+    // See the Harmony `egal` proposal: http://wiki.ecmascript.org/doku.php?id=harmony:egal.
+    if (a === b) return a !== 0 || 1 / a == 1 / b;
+    // A strict comparison is necessary because `null == undefined`.
+    if (a == null || b == null) return a === b;
+    // Unwrap any wrapped objects.
+    if (a._chain) a = a._wrapped;
+    if (b._chain) b = b._wrapped;
+    // Invoke a custom `isEqual` method if one is provided.
+    if (a.isEqual && _.isFunction(a.isEqual)) return a.isEqual(b);
+    if (b.isEqual && _.isFunction(b.isEqual)) return b.isEqual(a);
+    // Compare `[[Class]]` names.
+    var className = toString.call(a);
+    if (className != toString.call(b)) return false;
+    switch (className) {
+      // Strings, numbers, dates, and booleans are compared by value.
+      case '[object String]':
+        // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
+        // equivalent to `new String("5")`.
+        return a == String(b);
+      case '[object Number]':
+        // `NaN`s are equivalent, but non-reflexive. An `egal` comparison is performed for
+        // other numeric values.
+        return a != +a ? b != +b : (a == 0 ? 1 / a == 1 / b : a == +b);
+      case '[object Date]':
+      case '[object Boolean]':
+        // Coerce dates and booleans to numeric primitive values. Dates are compared by their
+        // millisecond representations. Note that invalid dates with millisecond representations
+        // of `NaN` are not equivalent.
+        return +a == +b;
+      // RegExps are compared by their source patterns and flags.
+      case '[object RegExp]':
+        return a.source == b.source &&
+               a.global == b.global &&
+               a.multiline == b.multiline &&
+               a.ignoreCase == b.ignoreCase;
+    }
+    if (typeof a != 'object' || typeof b != 'object') return false;
+    // Assume equality for cyclic structures. The algorithm for detecting cyclic
+    // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
+    var length = stack.length;
+    while (length--) {
+      // Linear search. Performance is inversely proportional to the number of
+      // unique nested structures.
+      if (stack[length] == a) return true;
+    }
+    // Add the first object to the stack of traversed objects.
+    stack.push(a);
+    var size = 0, result = true;
+    // Recursively compare objects and arrays.
+    if (className == '[object Array]') {
+      // Compare array lengths to determine if a deep comparison is necessary.
+      size = a.length;
+      result = size == b.length;
+      if (result) {
+        // Deep compare the contents, ignoring non-numeric properties.
+        while (size--) {
+          // Ensure commutative equality for sparse arrays.
+          if (!(result = size in a == size in b && eq(a[size], b[size], stack))) break;
+        }
+      }
+    } else {
+      // Objects with different constructors are not equivalent.
+      if ('constructor' in a != 'constructor' in b || a.constructor != b.constructor) return false;
+      // Deep compare objects.
+      for (var key in a) {
+        if (_.has(a, key)) {
+          // Count the expected number of properties.
+          size++;
+          // Deep compare each member.
+          if (!(result = _.has(b, key) && eq(a[key], b[key], stack))) break;
+        }
+      }
+      // Ensure that both objects contain the same number of properties.
+      if (result) {
+        for (key in b) {
+          if (_.has(b, key) && !(size--)) break;
+        }
+        result = !size;
+      }
+    }
+    // Remove the first object from the stack of traversed objects.
+    stack.pop();
+    return result;
+  }
+
+  // Perform a deep comparison to check if two objects are equal.
+  _.isEqual = function(a, b) {
+    return eq(a, b, []);
+  };
+
+  // Is a given array, string, or object empty?
+  // An "empty" object has no enumerable own-properties.
+  _.isEmpty = function(obj) {
+    if (_.isArray(obj) || _.isString(obj)) return obj.length === 0;
+    for (var key in obj) if (_.has(obj, key)) return false;
+    return true;
+  };
+
+  // Is a given value a DOM element?
+  _.isElement = function(obj) {
+    return !!(obj && obj.nodeType == 1);
+  };
+
+  // Is a given value an array?
+  // Delegates to ECMA5's native Array.isArray
+  _.isArray = nativeIsArray || function(obj) {
+    return toString.call(obj) == '[object Array]';
+  };
+
+  // Is a given variable an object?
+  _.isObject = function(obj) {
+    return obj === Object(obj);
+  };
+
+  // Is a given variable an arguments object?
+  _.isArguments = function(obj) {
+    return toString.call(obj) == '[object Arguments]';
+  };
+  if (!_.isArguments(arguments)) {
+    _.isArguments = function(obj) {
+      return !!(obj && _.has(obj, 'callee'));
+    };
+  }
+
+  // Is a given value a function?
+  _.isFunction = function(obj) {
+    return toString.call(obj) == '[object Function]';
+  };
+
+  // Is a given value a string?
+  _.isString = function(obj) {
+    return toString.call(obj) == '[object String]';
+  };
+
+  // Is a given value a number?
+  _.isNumber = function(obj) {
+    return toString.call(obj) == '[object Number]';
+  };
+
+  // Is the given value `NaN`?
+  _.isNaN = function(obj) {
+    // `NaN` is the only value for which `===` is not reflexive.
+    return obj !== obj;
+  };
+
+  // Is a given value a boolean?
+  _.isBoolean = function(obj) {
+    return obj === true || obj === false || toString.call(obj) == '[object Boolean]';
+  };
+
+  // Is a given value a date?
+  _.isDate = function(obj) {
+    return toString.call(obj) == '[object Date]';
+  };
+
+  // Is the given value a regular expression?
+  _.isRegExp = function(obj) {
+    return toString.call(obj) == '[object RegExp]';
+  };
+
+  // Is a given value equal to null?
+  _.isNull = function(obj) {
+    return obj === null;
+  };
+
+  // Is a given variable undefined?
+  _.isUndefined = function(obj) {
+    return obj === void 0;
+  };
+
+  // Has own property?
+  _.has = function(obj, key) {
+    return hasOwnProperty.call(obj, key);
+  };
+
+  // Utility Functions
+  // -----------------
+
+  // Run Underscore.js in *noConflict* mode, returning the `_` variable to its
+  // previous owner. Returns a reference to the Underscore object.
+  _.noConflict = function() {
+    root._ = previousUnderscore;
+    return this;
+  };
+
+  // Keep the identity function around for default iterators.
+  _.identity = function(value) {
+    return value;
+  };
+
+  // Run a function **n** times.
+  _.times = function (n, iterator, context) {
+    for (var i = 0; i < n; i++) iterator.call(context, i);
+  };
+
+  // Escape a string for HTML interpolation.
+  _.escape = function(string) {
+    return (''+string).replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>').replace(/"/g, '"').replace(/'/g, '&#x27;').replace(/\//g,'&#x2F;');
+  };
+
+  // Add your own custom functions to the Underscore object, ensuring that
+  // they're correctly added to the OOP wrapper as well.
+  _.mixin = function(obj) {
+    each(_.functions(obj), function(name){
+      addToWrapper(name, _[name] = obj[name]);
+    });
+  };
+
+  // Generate a unique integer id (unique within the entire client session).
+  // Useful for temporary DOM ids.
+  var idCounter = 0;
+  _.uniqueId = function(prefix) {
+    var id = idCounter++;
+    return prefix ? prefix + id : id;
+  };
+
+  // By default, Underscore uses ERB-style template delimiters, change the
+  // following template settings to use alternative delimiters.
+  _.templateSettings = {
+    evaluate    : /<%([\s\S]+?)%>/g,
+    interpolate : /<%=([\s\S]+?)%>/g,
+    escape      : /<%-([\s\S]+?)%>/g
+  };
+
+  // When customizing `templateSettings`, if you don't want to define an
+  // interpolation, evaluation or escaping regex, we need one that is
+  // guaranteed not to match.
+  var noMatch = /.^/;
+
+  // Within an interpolation, evaluation, or escaping, remove HTML escaping
+  // that had been previously added.
+  var unescape = function(code) {
+    return code.replace(/\\\\/g, '\\').replace(/\\'/g, "'");
+  };
+
+  // JavaScript micro-templating, similar to John Resig's implementation.
+  // Underscore templating handles arbitrary delimiters, preserves whitespace,
+  // and correctly escapes quotes within interpolated code.
+  _.template = function(str, data) {
+    var c  = _.templateSettings;
+    var tmpl = 'var __p=[],print=function(){__p.push.apply(__p,arguments);};' +
+      'with(obj||{}){__p.push(\'' +
+      str.replace(/\\/g, '\\\\')
+         .replace(/'/g, "\\'")
+         .replace(c.escape || noMatch, function(match, code) {
+           return "',_.escape(" + unescape(code) + "),'";
+         })
+         .replace(c.interpolate || noMatch, function(match, code) {
+           return "'," + unescape(code) + ",'";
+         })
+         .replace(c.evaluate || noMatch, function(match, code) {
+           return "');" + unescape(code).replace(/[\r\n\t]/g, ' ') + ";__p.push('";
+         })
+         .replace(/\r/g, '\\r')
+         .replace(/\n/g, '\\n')
+         .replace(/\t/g, '\\t')
+         + "');}return __p.join('');";
+    var func = new Function('obj', '_', tmpl);
+    if (data) return func(data, _);
+    return function(data) {
+      return func.call(this, data, _);
+    };
+  };
+
+  // Add a "chain" function, which will delegate to the wrapper.
+  _.chain = function(obj) {
+    return _(obj).chain();
+  };
+
+  // The OOP Wrapper
+  // ---------------
+
+  // If Underscore is called as a function, it returns a wrapped object that
+  // can be used OO-style. This wrapper holds altered versions of all the
+  // underscore functions. Wrapped objects may be chained.
+  var wrapper = function(obj) { this._wrapped = obj; };
+
+  // Expose `wrapper.prototype` as `_.prototype`
+  _.prototype = wrapper.prototype;
+
+  // Helper function to continue chaining intermediate results.
+  var result = function(obj, chain) {
+    return chain ? _(obj).chain() : obj;
+  };
+
+  // A method to easily add functions to the OOP wrapper.
+  var addToWrapper = function(name, func) {
+    wrapper.prototype[name] = function() {
+      var args = slice.call(arguments);
+      unshift.call(args, this._wrapped);
+      return result(func.apply(_, args), this._chain);
+    };
+  };
+
+  // Add all of the Underscore functions to the wrapper object.
+  _.mixin(_);
+
+  // Add all mutator Array functions to the wrapper.
+  each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
+    var method = ArrayProto[name];
+    wrapper.prototype[name] = function() {
+      var wrapped = this._wrapped;
+      method.apply(wrapped, arguments);
+      var length = wrapped.length;
+      if ((name == 'shift' || name == 'splice') && length === 0) delete wrapped[0];
+      return result(wrapped, this._chain);
+    };
+  });
+
+  // Add all accessor Array functions to the wrapper.
+  each(['concat', 'join', 'slice'], function(name) {
+    var method = ArrayProto[name];
+    wrapper.prototype[name] = function() {
+      return result(method.apply(this._wrapped, arguments), this._chain);
+    };
+  });
+
+  // Start chaining a wrapped Underscore object.
+  wrapper.prototype.chain = function() {
+    this._chain = true;
+    return this;
+  };
+
+  // Extracts the result from a wrapped and chained object.
+  wrapper.prototype.value = function() {
+    return this._wrapped;
+  };
+
+}).call(this);

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/underscore.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/underscore.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/underscore.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,31 @@
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+// (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
+// Underscore is freely distributable under the MIT license.
+// Portions of Underscore are inspired or borrowed from Prototype,
+// Oliver Steele's Functional, and John Resig's Micro-Templating.
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Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/up-pressed.png
===================================================================
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Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/up-pressed.png
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/up-pressed.png	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/up-pressed.png	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/up-pressed.png
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
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Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/up.png
===================================================================
(Binary files differ)

Index: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/up.png
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/up.png	2020-02-15 00:53:27 UTC (rev 53788)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/up.png	2020-02-15 12:45:08 UTC (rev 53789)

Property changes on: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/up.png
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/octet-stream
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Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/websupport.js
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/websupport.js	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/_static/websupport.js	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,808 @@
+/*
+ * websupport.js
+ * ~~~~~~~~~~~~~
+ *
+ * sphinx.websupport utilities for all documentation.
+ *
+ * :copyright: Copyright 2007-2019 by the Sphinx team, see AUTHORS.
+ * :license: BSD, see LICENSE for details.
+ *
+ */
+
+(function($) {
+  $.fn.autogrow = function() {
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+    var textarea = this;
+
+    $.fn.autogrow.resize(textarea);
+
+    $(textarea)
+      .focus(function() {
+        textarea.interval = setInterval(function() {
+          $.fn.autogrow.resize(textarea);
+        }, 500);
+      })
+      .blur(function() {
+        clearInterval(textarea.interval);
+      });
+    });
+  };
+
+  $.fn.autogrow.resize = function(textarea) {
+    var lineHeight = parseInt($(textarea).css('line-height'), 10);
+    var lines = textarea.value.split('\n');
+    var columns = textarea.cols;
+    var lineCount = 0;
+    $.each(lines, function() {
+      lineCount += Math.ceil(this.length / columns) || 1;
+    });
+    var height = lineHeight * (lineCount + 1);
+    $(textarea).css('height', height);
+  };
+})(jQuery);
+
+(function($) {
+  var comp, by;
+
+  function init() {
+    initEvents();
+    initComparator();
+  }
+
+  function initEvents() {
+    $(document).on("click", 'a.comment-close', function(event) {
+      event.preventDefault();
+      hide($(this).attr('id').substring(2));
+    });
+    $(document).on("click", 'a.vote', function(event) {
+      event.preventDefault();
+      handleVote($(this));
+    });
+    $(document).on("click", 'a.reply', function(event) {
+      event.preventDefault();
+      openReply($(this).attr('id').substring(2));
+    });
+    $(document).on("click", 'a.close-reply', function(event) {
+      event.preventDefault();
+      closeReply($(this).attr('id').substring(2));
+    });
+    $(document).on("click", 'a.sort-option', function(event) {
+      event.preventDefault();
+      handleReSort($(this));
+    });
+    $(document).on("click", 'a.show-proposal', function(event) {
+      event.preventDefault();
+      showProposal($(this).attr('id').substring(2));
+    });
+    $(document).on("click", 'a.hide-proposal', function(event) {
+      event.preventDefault();
+      hideProposal($(this).attr('id').substring(2));
+    });
+    $(document).on("click", 'a.show-propose-change', function(event) {
+      event.preventDefault();
+      showProposeChange($(this).attr('id').substring(2));
+    });
+    $(document).on("click", 'a.hide-propose-change', function(event) {
+      event.preventDefault();
+      hideProposeChange($(this).attr('id').substring(2));
+    });
+    $(document).on("click", 'a.accept-comment', function(event) {
+      event.preventDefault();
+      acceptComment($(this).attr('id').substring(2));
+    });
+    $(document).on("click", 'a.delete-comment', function(event) {
+      event.preventDefault();
+      deleteComment($(this).attr('id').substring(2));
+    });
+    $(document).on("click", 'a.comment-markup', function(event) {
+      event.preventDefault();
+      toggleCommentMarkupBox($(this).attr('id').substring(2));
+    });
+  }
+
+  /**
+   * Set comp, which is a comparator function used for sorting and
+   * inserting comments into the list.
+   */
+  function setComparator() {
+    // If the first three letters are "asc", sort in ascending order
+    // and remove the prefix.
+    if (by.substring(0,3) == 'asc') {
+      var i = by.substring(3);
+      comp = function(a, b) { return a[i] - b[i]; };
+    } else {
+      // Otherwise sort in descending order.
+      comp = function(a, b) { return b[by] - a[by]; };
+    }
+
+    // Reset link styles and format the selected sort option.
+    $('a.sel').attr('href', '#').removeClass('sel');
+    $('a.by' + by).removeAttr('href').addClass('sel');
+  }
+
+  /**
+   * Create a comp function. If the user has preferences stored in
+   * the sortBy cookie, use those, otherwise use the default.
+   */
+  function initComparator() {
+    by = 'rating'; // Default to sort by rating.
+    // If the sortBy cookie is set, use that instead.
+    if (document.cookie.length > 0) {
+      var start = document.cookie.indexOf('sortBy=');
+      if (start != -1) {
+        start = start + 7;
+        var end = document.cookie.indexOf(";", start);
+        if (end == -1) {
+          end = document.cookie.length;
+          by = unescape(document.cookie.substring(start, end));
+        }
+      }
+    }
+    setComparator();
+  }
+
+  /**
+   * Show a comment div.
+   */
+  function show(id) {
+    $('#ao' + id).hide();
+    $('#ah' + id).show();
+    var context = $.extend({id: id}, opts);
+    var popup = $(renderTemplate(popupTemplate, context)).hide();
+    popup.find('textarea[name="proposal"]').hide();
+    popup.find('a.by' + by).addClass('sel');
+    var form = popup.find('#cf' + id);
+    form.submit(function(event) {
+      event.preventDefault();
+      addComment(form);
+    });
+    $('#s' + id).after(popup);
+    popup.slideDown('fast', function() {
+      getComments(id);
+    });
+  }
+
+  /**
+   * Hide a comment div.
+   */
+  function hide(id) {
+    $('#ah' + id).hide();
+    $('#ao' + id).show();
+    var div = $('#sc' + id);
+    div.slideUp('fast', function() {
+      div.remove();
+    });
+  }
+
+  /**
+   * Perform an ajax request to get comments for a node
+   * and insert the comments into the comments tree.
+   */
+  function getComments(id) {
+    $.ajax({
+     type: 'GET',
+     url: opts.getCommentsURL,
+     data: {node: id},
+     success: function(data, textStatus, request) {
+       var ul = $('#cl' + id);
+       var speed = 100;
+       $('#cf' + id)
+         .find('textarea[name="proposal"]')
+         .data('source', data.source);
+
+       if (data.comments.length === 0) {
+         ul.html('<li>No comments yet.</li>');
+         ul.data('empty', true);
+       } else {
+         // If there are comments, sort them and put them in the list.
+         var comments = sortComments(data.comments);
+         speed = data.comments.length * 100;
+         appendComments(comments, ul);
+         ul.data('empty', false);
+       }
+       $('#cn' + id).slideUp(speed + 200);
+       ul.slideDown(speed);
+     },
+     error: function(request, textStatus, error) {
+       showError('Oops, there was a problem retrieving the comments.');
+     },
+     dataType: 'json'
+    });
+  }
+
+  /**
+   * Add a comment via ajax and insert the comment into the comment tree.
+   */
+  function addComment(form) {
+    var node_id = form.find('input[name="node"]').val();
+    var parent_id = form.find('input[name="parent"]').val();
+    var text = form.find('textarea[name="comment"]').val();
+    var proposal = form.find('textarea[name="proposal"]').val();
+
+    if (text == '') {
+      showError('Please enter a comment.');
+      return;
+    }
+
+    // Disable the form that is being submitted.
+    form.find('textarea,input').attr('disabled', 'disabled');
+
+    // Send the comment to the server.
+    $.ajax({
+      type: "POST",
+      url: opts.addCommentURL,
+      dataType: 'json',
+      data: {
+        node: node_id,
+        parent: parent_id,
+        text: text,
+        proposal: proposal
+      },
+      success: function(data, textStatus, error) {
+        // Reset the form.
+        if (node_id) {
+          hideProposeChange(node_id);
+        }
+        form.find('textarea')
+          .val('')
+          .add(form.find('input'))
+          .removeAttr('disabled');
+	var ul = $('#cl' + (node_id || parent_id));
+        if (ul.data('empty')) {
+          $(ul).empty();
+          ul.data('empty', false);
+        }
+        insertComment(data.comment);
+        var ao = $('#ao' + node_id);
+        ao.find('img').attr({'src': opts.commentBrightImage});
+        if (node_id) {
+          // if this was a "root" comment, remove the commenting box
+          // (the user can get it back by reopening the comment popup)
+          $('#ca' + node_id).slideUp();
+        }
+      },
+      error: function(request, textStatus, error) {
+        form.find('textarea,input').removeAttr('disabled');
+        showError('Oops, there was a problem adding the comment.');
+      }
+    });
+  }
+
+  /**
+   * Recursively append comments to the main comment list and children
+   * lists, creating the comment tree.
+   */
+  function appendComments(comments, ul) {
+    $.each(comments, function() {
+      var div = createCommentDiv(this);
+      ul.append($(document.createElement('li')).html(div));
+      appendComments(this.children, div.find('ul.comment-children'));
+      // To avoid stagnating data, don't store the comments children in data.
+      this.children = null;
+      div.data('comment', this);
+    });
+  }
+
+  /**
+   * After adding a new comment, it must be inserted in the correct
+   * location in the comment tree.
+   */
+  function insertComment(comment) {
+    var div = createCommentDiv(comment);
+
+    // To avoid stagnating data, don't store the comments children in data.
+    comment.children = null;
+    div.data('comment', comment);
+
+    var ul = $('#cl' + (comment.node || comment.parent));
+    var siblings = getChildren(ul);
+
+    var li = $(document.createElement('li'));
+    li.hide();
+
+    // Determine where in the parents children list to insert this comment.
+    for(var i=0; i < siblings.length; i++) {
+      if (comp(comment, siblings[i]) <= 0) {
+        $('#cd' + siblings[i].id)
+          .parent()
+          .before(li.html(div));
+        li.slideDown('fast');
+        return;
+      }
+    }
+
+    // If we get here, this comment rates lower than all the others,
+    // or it is the only comment in the list.
+    ul.append(li.html(div));
+    li.slideDown('fast');
+  }
+
+  function acceptComment(id) {
+    $.ajax({
+      type: 'POST',
+      url: opts.acceptCommentURL,
+      data: {id: id},
+      success: function(data, textStatus, request) {
+        $('#cm' + id).fadeOut('fast');
+        $('#cd' + id).removeClass('moderate');
+      },
+      error: function(request, textStatus, error) {
+        showError('Oops, there was a problem accepting the comment.');
+      }
+    });
+  }
+
+  function deleteComment(id) {
+    $.ajax({
+      type: 'POST',
+      url: opts.deleteCommentURL,
+      data: {id: id},
+      success: function(data, textStatus, request) {
+        var div = $('#cd' + id);
+        if (data == 'delete') {
+          // Moderator mode: remove the comment and all children immediately
+          div.slideUp('fast', function() {
+            div.remove();
+          });
+          return;
+        }
+        // User mode: only mark the comment as deleted
+        div
+          .find('span.user-id:first')
+          .text('[deleted]').end()
+          .find('div.comment-text:first')
+          .text('[deleted]').end()
+          .find('#cm' + id + ', #dc' + id + ', #ac' + id + ', #rc' + id +
+                ', #sp' + id + ', #hp' + id + ', #cr' + id + ', #rl' + id)
+          .remove();
+        var comment = div.data('comment');
+        comment.username = '[deleted]';
+        comment.text = '[deleted]';
+        div.data('comment', comment);
+      },
+      error: function(request, textStatus, error) {
+        showError('Oops, there was a problem deleting the comment.');
+      }
+    });
+  }
+
+  function showProposal(id) {
+    $('#sp' + id).hide();
+    $('#hp' + id).show();
+    $('#pr' + id).slideDown('fast');
+  }
+
+  function hideProposal(id) {
+    $('#hp' + id).hide();
+    $('#sp' + id).show();
+    $('#pr' + id).slideUp('fast');
+  }
+
+  function showProposeChange(id) {
+    $('#pc' + id).hide();
+    $('#hc' + id).show();
+    var textarea = $('#pt' + id);
+    textarea.val(textarea.data('source'));
+    $.fn.autogrow.resize(textarea[0]);
+    textarea.slideDown('fast');
+  }
+
+  function hideProposeChange(id) {
+    $('#hc' + id).hide();
+    $('#pc' + id).show();
+    var textarea = $('#pt' + id);
+    textarea.val('').removeAttr('disabled');
+    textarea.slideUp('fast');
+  }
+
+  function toggleCommentMarkupBox(id) {
+    $('#mb' + id).toggle();
+  }
+
+  /** Handle when the user clicks on a sort by link. */
+  function handleReSort(link) {
+    var classes = link.attr('class').split(/\s+/);
+    for (var i=0; i<classes.length; i++) {
+      if (classes[i] != 'sort-option') {
+	by = classes[i].substring(2);
+      }
+    }
+    setComparator();
+    // Save/update the sortBy cookie.
+    var expiration = new Date();
+    expiration.setDate(expiration.getDate() + 365);
+    document.cookie= 'sortBy=' + escape(by) +
+                     ';expires=' + expiration.toUTCString();
+    $('ul.comment-ul').each(function(index, ul) {
+      var comments = getChildren($(ul), true);
+      comments = sortComments(comments);
+      appendComments(comments, $(ul).empty());
+    });
+  }
+
+  /**
+   * Function to process a vote when a user clicks an arrow.
+   */
+  function handleVote(link) {
+    if (!opts.voting) {
+      showError("You'll need to login to vote.");
+      return;
+    }
+
+    var id = link.attr('id');
+    if (!id) {
+      // Didn't click on one of the voting arrows.
+      return;
+    }
+    // If it is an unvote, the new vote value is 0,
+    // Otherwise it's 1 for an upvote, or -1 for a downvote.
+    var value = 0;
+    if (id.charAt(1) != 'u') {
+      value = id.charAt(0) == 'u' ? 1 : -1;
+    }
+    // The data to be sent to the server.
+    var d = {
+      comment_id: id.substring(2),
+      value: value
+    };
+
+    // Swap the vote and unvote links.
+    link.hide();
+    $('#' + id.charAt(0) + (id.charAt(1) == 'u' ? 'v' : 'u') + d.comment_id)
+      .show();
+
+    // The div the comment is displayed in.
+    var div = $('div#cd' + d.comment_id);
+    var data = div.data('comment');
+
+    // If this is not an unvote, and the other vote arrow has
+    // already been pressed, unpress it.
+    if ((d.value !== 0) && (data.vote === d.value * -1)) {
+      $('#' + (d.value == 1 ? 'd' : 'u') + 'u' + d.comment_id).hide();
+      $('#' + (d.value == 1 ? 'd' : 'u') + 'v' + d.comment_id).show();
+    }
+
+    // Update the comments rating in the local data.
+    data.rating += (data.vote === 0) ? d.value : (d.value - data.vote);
+    data.vote = d.value;
+    div.data('comment', data);
+
+    // Change the rating text.
+    div.find('.rating:first')
+      .text(data.rating + ' point' + (data.rating == 1 ? '' : 's'));
+
+    // Send the vote information to the server.
+    $.ajax({
+      type: "POST",
+      url: opts.processVoteURL,
+      data: d,
+      error: function(request, textStatus, error) {
+        showError('Oops, there was a problem casting that vote.');
+      }
+    });
+  }
+
+  /**
+   * Open a reply form used to reply to an existing comment.
+   */
+  function openReply(id) {
+    // Swap out the reply link for the hide link
+    $('#rl' + id).hide();
+    $('#cr' + id).show();
+
+    // Add the reply li to the children ul.
+    var div = $(renderTemplate(replyTemplate, {id: id})).hide();
+    $('#cl' + id)
+      .prepend(div)
+      // Setup the submit handler for the reply form.
+      .find('#rf' + id)
+      .submit(function(event) {
+        event.preventDefault();
+        addComment($('#rf' + id));
+        closeReply(id);
+      })
+      .find('input[type=button]')
+      .click(function() {
+        closeReply(id);
+      });
+    div.slideDown('fast', function() {
+      $('#rf' + id).find('textarea').focus();
+    });
+  }
+
+  /**
+   * Close the reply form opened with openReply.
+   */
+  function closeReply(id) {
+    // Remove the reply div from the DOM.
+    $('#rd' + id).slideUp('fast', function() {
+      $(this).remove();
+    });
+
+    // Swap out the hide link for the reply link
+    $('#cr' + id).hide();
+    $('#rl' + id).show();
+  }
+
+  /**
+   * Recursively sort a tree of comments using the comp comparator.
+   */
+  function sortComments(comments) {
+    comments.sort(comp);
+    $.each(comments, function() {
+      this.children = sortComments(this.children);
+    });
+    return comments;
+  }
+
+  /**
+   * Get the children comments from a ul. If recursive is true,
+   * recursively include childrens' children.
+   */
+  function getChildren(ul, recursive) {
+    var children = [];
+    ul.children().children("[id^='cd']")
+      .each(function() {
+        var comment = $(this).data('comment');
+        if (recursive)
+          comment.children = getChildren($(this).find('#cl' + comment.id), true);
+        children.push(comment);
+      });
+    return children;
+  }
+
+  /** Create a div to display a comment in. */
+  function createCommentDiv(comment) {
+    if (!comment.displayed && !opts.moderator) {
+      return $('<div class="moderate">Thank you!  Your comment will show up '
+               + 'once it is has been approved by a moderator.</div>');
+    }
+    // Prettify the comment rating.
+    comment.pretty_rating = comment.rating + ' point' +
+      (comment.rating == 1 ? '' : 's');
+    // Make a class (for displaying not yet moderated comments differently)
+    comment.css_class = comment.displayed ? '' : ' moderate';
+    // Create a div for this comment.
+    var context = $.extend({}, opts, comment);
+    var div = $(renderTemplate(commentTemplate, context));
+
+    // If the user has voted on this comment, highlight the correct arrow.
+    if (comment.vote) {
+      var direction = (comment.vote == 1) ? 'u' : 'd';
+      div.find('#' + direction + 'v' + comment.id).hide();
+      div.find('#' + direction + 'u' + comment.id).show();
+    }
+
+    if (opts.moderator || comment.text != '[deleted]') {
+      div.find('a.reply').show();
+      if (comment.proposal_diff)
+        div.find('#sp' + comment.id).show();
+      if (opts.moderator && !comment.displayed)
+        div.find('#cm' + comment.id).show();
+      if (opts.moderator || (opts.username == comment.username))
+        div.find('#dc' + comment.id).show();
+    }
+    return div;
+  }
+
+  /**
+   * A simple template renderer. Placeholders such as <%id%> are replaced
+   * by context['id'] with items being escaped. Placeholders such as <#id#>
+   * are not escaped.
+   */
+  function renderTemplate(template, context) {
+    var esc = $(document.createElement('div'));
+
+    function handle(ph, escape) {
+      var cur = context;
+      $.each(ph.split('.'), function() {
+        cur = cur[this];
+      });
+      return escape ? esc.text(cur || "").html() : cur;
+    }
+
+    return template.replace(/<([%#])([\w\.]*)\1>/g, function() {
+      return handle(arguments[2], arguments[1] == '%' ? true : false);
+    });
+  }
+
+  /** Flash an error message briefly. */
+  function showError(message) {
+    $(document.createElement('div')).attr({'class': 'popup-error'})
+      .append($(document.createElement('div'))
+               .attr({'class': 'error-message'}).text(message))
+      .appendTo('body')
+      .fadeIn("slow")
+      .delay(2000)
+      .fadeOut("slow");
+  }
+
+  /** Add a link the user uses to open the comments popup. */
+  $.fn.comment = function() {
+    return this.each(function() {
+      var id = $(this).attr('id').substring(1);
+      var count = COMMENT_METADATA[id];
+      var title = count + ' comment' + (count == 1 ? '' : 's');
+      var image = count > 0 ? opts.commentBrightImage : opts.commentImage;
+      var addcls = count == 0 ? ' nocomment' : '';
+      $(this)
+        .append(
+          $(document.createElement('a')).attr({
+            href: '#',
+            'class': 'sphinx-comment-open' + addcls,
+            id: 'ao' + id
+          })
+            .append($(document.createElement('img')).attr({
+              src: image,
+              alt: 'comment',
+              title: title
+            }))
+            .click(function(event) {
+              event.preventDefault();
+              show($(this).attr('id').substring(2));
+            })
+        )
+        .append(
+          $(document.createElement('a')).attr({
+            href: '#',
+            'class': 'sphinx-comment-close hidden',
+            id: 'ah' + id
+          })
+            .append($(document.createElement('img')).attr({
+              src: opts.closeCommentImage,
+              alt: 'close',
+              title: 'close'
+            }))
+            .click(function(event) {
+              event.preventDefault();
+              hide($(this).attr('id').substring(2));
+            })
+        );
+    });
+  };
+
+  var opts = {
+    processVoteURL: '/_process_vote',
+    addCommentURL: '/_add_comment',
+    getCommentsURL: '/_get_comments',
+    acceptCommentURL: '/_accept_comment',
+    deleteCommentURL: '/_delete_comment',
+    commentImage: '/static/_static/comment.png',
+    closeCommentImage: '/static/_static/comment-close.png',
+    loadingImage: '/static/_static/ajax-loader.gif',
+    commentBrightImage: '/static/_static/comment-bright.png',
+    upArrow: '/static/_static/up.png',
+    downArrow: '/static/_static/down.png',
+    upArrowPressed: '/static/_static/up-pressed.png',
+    downArrowPressed: '/static/_static/down-pressed.png',
+    voting: false,
+    moderator: false
+  };
+
+  if (typeof COMMENT_OPTIONS != "undefined") {
+    opts = jQuery.extend(opts, COMMENT_OPTIONS);
+  }
+
+  var popupTemplate = '\
+    <div class="sphinx-comments" id="sc<%id%>">\
+      <p class="sort-options">\
+        Sort by:\
+        <a href="#" class="sort-option byrating">best rated</a>\
+        <a href="#" class="sort-option byascage">newest</a>\
+        <a href="#" class="sort-option byage">oldest</a>\
+      </p>\
+      <div class="comment-header">Comments</div>\
+      <div class="comment-loading" id="cn<%id%>">\
+        loading comments... <img src="<%loadingImage%>" alt="" /></div>\
+      <ul id="cl<%id%>" class="comment-ul"></ul>\
+      <div id="ca<%id%>">\
+      <p class="add-a-comment">Add a comment\
+        (<a href="#" class="comment-markup" id="ab<%id%>">markup</a>):</p>\
+      <div class="comment-markup-box" id="mb<%id%>">\
+        reStructured text markup: <i>*emph*</i>, <b>**strong**</b>, \
+        <code>``code``</code>, \
+        code blocks: <code>::</code> and an indented block after blank line</div>\
+      <form method="post" id="cf<%id%>" class="comment-form" action="">\
+        <textarea name="comment" cols="80"></textarea>\
+        <p class="propose-button">\
+          <a href="#" id="pc<%id%>" class="show-propose-change">\
+            Propose a change ▹\
+          </a>\
+          <a href="#" id="hc<%id%>" class="hide-propose-change">\
+            Propose a change ▿\
+          </a>\
+        </p>\
+        <textarea name="proposal" id="pt<%id%>" cols="80"\
+                  spellcheck="false"></textarea>\
+        <input type="submit" value="Add comment" />\
+        <input type="hidden" name="node" value="<%id%>" />\
+        <input type="hidden" name="parent" value="" />\
+      </form>\
+      </div>\
+    </div>';
+
+  var commentTemplate = '\
+    <div id="cd<%id%>" class="sphinx-comment<%css_class%>">\
+      <div class="vote">\
+        <div class="arrow">\
+          <a href="#" id="uv<%id%>" class="vote" title="vote up">\
+            <img src="<%upArrow%>" />\
+          </a>\
+          <a href="#" id="uu<%id%>" class="un vote" title="vote up">\
+            <img src="<%upArrowPressed%>" />\
+          </a>\
+        </div>\
+        <div class="arrow">\
+          <a href="#" id="dv<%id%>" class="vote" title="vote down">\
+            <img src="<%downArrow%>" id="da<%id%>" />\
+          </a>\
+          <a href="#" id="du<%id%>" class="un vote" title="vote down">\
+            <img src="<%downArrowPressed%>" />\
+          </a>\
+        </div>\
+      </div>\
+      <div class="comment-content">\
+        <p class="tagline comment">\
+          <span class="user-id"><%username%></span>\
+          <span class="rating"><%pretty_rating%></span>\
+          <span class="delta"><%time.delta%></span>\
+        </p>\
+        <div class="comment-text comment"><#text#></div>\
+        <p class="comment-opts comment">\
+          <a href="#" class="reply hidden" id="rl<%id%>">reply ▹</a>\
+          <a href="#" class="close-reply" id="cr<%id%>">reply ▿</a>\
+          <a href="#" id="sp<%id%>" class="show-proposal">proposal ▹</a>\
+          <a href="#" id="hp<%id%>" class="hide-proposal">proposal ▿</a>\
+          <a href="#" id="dc<%id%>" class="delete-comment hidden">delete</a>\
+          <span id="cm<%id%>" class="moderation hidden">\
+            <a href="#" id="ac<%id%>" class="accept-comment">accept</a>\
+          </span>\
+        </p>\
+        <pre class="proposal" id="pr<%id%>">\
+<#proposal_diff#>\
+        </pre>\
+          <ul class="comment-children" id="cl<%id%>"></ul>\
+        </div>\
+        <div class="clearleft"></div>\
+      </div>\
+    </div>';
+
+  var replyTemplate = '\
+    <li>\
+      <div class="reply-div" id="rd<%id%>">\
+        <form id="rf<%id%>">\
+          <textarea name="comment" cols="80"></textarea>\
+          <input type="submit" value="Add reply" />\
+          <input type="button" value="Cancel" />\
+          <input type="hidden" name="parent" value="<%id%>" />\
+          <input type="hidden" name="node" value="" />\
+        </form>\
+      </div>\
+    </li>';
+
+  $(document).ready(function() {
+    init();
+  });
+})(jQuery);
+
+$(document).ready(function() {
+  // add comment anchors for all paragraphs that are commentable
+  $('.sphinx-has-comment').comment();
+
+  // highlight search words in search results
+  $("div.context").each(function() {
+    var params = $.getQueryParameters();
+    var terms = (params.q) ? params.q[0].split(/\s+/) : [];
+    var result = $(this);
+    $.each(terms, function() {
+      result.highlightText(this.toLowerCase(), 'highlighted');
+    });
+  });
+
+  // directly open comment window if requested
+  var anchor = document.location.hash;
+  if (anchor.substring(0, 9) == '#comment-') {
+    $('#ao' + anchor.substring(9)).click();
+    document.location.hash = '#s' + anchor.substring(9);
+  }
+});

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/genindex.html
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/genindex.html	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/genindex.html	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,85 @@
+
+
+
+<!doctype html>
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta http-equiv="X-UA-Compatible" content="IE=Edge" />
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    <title>Index — pplib 0.1 documentation</title>
+    <link rel="stylesheet" href="_static/bizstyle.css" type="text/css" />
+    <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
+    
+    <script type="text/javascript" id="documentation_options" data-url_root="./" src="_static/documentation_options.js"></script>
+    <script type="text/javascript" src="_static/jquery.js"></script>
+    <script type="text/javascript" src="_static/underscore.js"></script>
+    <script type="text/javascript" src="_static/doctools.js"></script>
+    <script type="text/javascript" src="_static/language_data.js"></script>
+    <script type="text/javascript" src="_static/bizstyle.js"></script>
+    <link rel="index" title="Index" href="#" />
+    <link rel="search" title="Search" href="search.html" />
+    <meta name="viewport" content="width=device-width,initial-scale=1.0">
+    <!--[if lt IE 9]>
+    <script type="text/javascript" src="_static/css3-mediaqueries.js"></script>
+    <![endif]-->
+  </head><body>
+    <div class="related" role="navigation" aria-label="related navigation">
+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="#" title="General Index"
+             accesskey="I">index</a></li>
+        <li class="nav-item nav-item-0"><a href="pplib.html">pplib 0.1 documentation</a> »</li> 
+      </ul>
+    </div>
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+<div id="searchbox" style="display: none" role="search">
+  <h3>Quick search</h3>
+    <div class="searchformwrapper">
+    <form class="search" action="search.html" method="get">
+      <input type="text" name="q" />
+      <input type="submit" value="Go" />
+      <input type="hidden" name="check_keywords" value="yes" />
+      <input type="hidden" name="area" value="default" />
+    </form>
+    </div>
+</div>
+<script type="text/javascript">$('#searchbox').show(0);</script>
+        </div>
+      </div>
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          <div class="body" role="main">
+            
+
+<h1 id="index">Index</h1>
+
+<div class="genindex-jumpbox">
+ 
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
+    <div class="related" role="navigation" aria-label="related navigation">
+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="#" title="General Index"
+             >index</a></li>
+        <li class="nav-item nav-item-0"><a href="pplib.html">pplib 0.1 documentation</a> »</li> 
+      </ul>
+    </div>
+    <div class="footer" role="contentinfo">
+        © Copyright 2019, p.jackowski at gust.org.pl.
+      Created using <a href="http://sphinx-doc.org/">Sphinx</a> 1.8.5.
+    </div>
+  </body>
+</html>
\ No newline at end of file

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/objects.inv
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/objects.inv	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/objects.inv	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,6 @@
+# Sphinx inventory version 2
+# Project: pplib
+# Version: 
+# The remainder of this file is compressed using zlib.
+x\xDAm\x8F=\xC3 
FwN\xC1\x88\xC6\xEE
:T\xAA\xD4\xB0?VI\xDB\xF4\xF6L\xA4l\xE6}\x85袁\x9D\xE7\xCD\\xBCZ\xC0s1s\xDB\xE9\xB4n\xC1\xF3[
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+ I\x944\xC2wL
\xA0\xB4\x9E\xFD\xC9mW\xF5\xD2\xEB\xF8sb\xA4>)(
\xEC\xE4^r\xA1
\ No newline at end of file

Added: trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/ppapi-1.x.html
===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/ppapi-1.x.html	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/ppapi-1.x.html	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,1030 @@
+
+
+<!doctype html>
+
+<html xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta http-equiv="X-UA-Compatible" content="IE=Edge" />
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    <title>pplib 1.x — pplib 0.1 documentation</title>
+    <link rel="stylesheet" href="_static/bizstyle.css" type="text/css" />
+    <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
+    
+    <script type="text/javascript" id="documentation_options" data-url_root="./" src="_static/documentation_options.js"></script>
+    <script type="text/javascript" src="_static/jquery.js"></script>
+    <script type="text/javascript" src="_static/underscore.js"></script>
+    <script type="text/javascript" src="_static/doctools.js"></script>
+    <script type="text/javascript" src="_static/language_data.js"></script>
+    <script type="text/javascript" src="_static/bizstyle.js"></script>
+    <link rel="index" title="Index" href="genindex.html" />
+    <link rel="search" title="Search" href="search.html" />
+    <link rel="next" title="Examples" href="ppcode.html" />
+    <link rel="prev" title="pplib 2.x" href="ppapi-2.x.html" />
+    <meta name="viewport" content="width=device-width,initial-scale=1.0">
+    <!--[if lt IE 9]>
+    <script type="text/javascript" src="_static/css3-mediaqueries.js"></script>
+    <![endif]-->
+  </head><body>
+    <div class="related" role="navigation" aria-label="related navigation">
+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="genindex.html" title="General Index"
+             accesskey="I">index</a></li>
+        <li class="right" >
+          <a href="ppcode.html" title="Examples"
+             accesskey="N">next</a> |</li>
+        <li class="right" >
+          <a href="ppapi-2.x.html" title="pplib 2.x"
+             accesskey="P">previous</a> |</li>
+        <li class="nav-item nav-item-0"><a href="pplib.html">pplib 0.1 documentation</a> »</li> 
+      </ul>
+    </div>
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+  <h3><a href="pplib.html">Table of Contents</a></h3>
+  <ul>
+<li><a class="reference internal" href="#"><code class="docutils literal notranslate"><span class="pre">pplib</span></code> 1.x</a></li>
+<li><a class="reference internal" href="#c-api">C-API</a><ul>
+<li><a class="reference internal" href="#types">Types</a></li>
+<li><a class="reference internal" href="#object">Object</a></li>
+<li><a class="reference internal" href="#names">Names</a></li>
+<li><a class="reference internal" href="#string">String</a></li>
+<li><a class="reference internal" href="#array">Array</a></li>
+<li><a class="reference internal" href="#dict">Dict</a></li>
+<li><a class="reference internal" href="#stream">Stream</a></li>
+<li><a class="reference internal" href="#filters">Filters</a></li>
+<li><a class="reference internal" href="#ref">Ref</a></li>
+<li><a class="reference internal" href="#xref">XRef</a></li>
+<li><a class="reference internal" href="#pdf">PDF</a></li>
+<li><a class="reference internal" href="#encryption">Encryption</a></li>
+<li><a class="reference internal" href="#pages">Pages</a></li>
+<li><a class="reference internal" href="#contents">Contents</a></li>
+<li><a class="reference internal" href="#boxes">Boxes</a></li>
+<li><a class="reference internal" href="#transforms">Transforms</a></li>
+<li><a class="reference internal" href="#errors-handling">Errors handling</a></li>
+</ul>
+</li>
+</ul>
+
+  <h4>Previous topic</h4>
+  <p class="topless"><a href="ppapi-2.x.html"
+                        title="previous chapter"><code class="docutils literal notranslate"><span class="pre">pplib</span></code> 2.x</a></p>
+  <h4>Next topic</h4>
+  <p class="topless"><a href="ppcode.html"
+                        title="next chapter">Examples</a></p>
+  <div role="note" aria-label="source link">
+    <h3>This Page</h3>
+    <ul class="this-page-menu">
+      <li><a href="_sources/ppapi-1.x.rst.txt"
+            rel="nofollow">Show Source</a></li>
+    </ul>
+   </div>
+<div id="searchbox" style="display: none" role="search">
+  <h3>Quick search</h3>
+    <div class="searchformwrapper">
+    <form class="search" action="search.html" method="get">
+      <input type="text" name="q" />
+      <input type="submit" value="Go" />
+      <input type="hidden" name="check_keywords" value="yes" />
+      <input type="hidden" name="area" value="default" />
+    </form>
+    </div>
+</div>
+<script type="text/javascript">$('#searchbox').show(0);</script>
+        </div>
+      </div>
+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          <div class="body" role="main">
+            
+  <div class="section" id="pplib-1-x">
+<h1><code class="docutils literal notranslate"><span class="pre">pplib</span></code> 1.x<a class="headerlink" href="#pplib-1-x" title="Permalink to this headline">¶</a></h1>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> is a library for raw PDF access. It parses PDF documents and provides an interface to access document structures in C.</p>
+</div>
+<div class="section" id="c-api">
+<h1>C-API<a class="headerlink" href="#c-api" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="types">
+<h2>Types<a class="headerlink" href="#types" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> defines several C-types to represent PDF types:</p>
+<ul class="simple">
+<li><code class="docutils literal notranslate"><span class="pre">ppint</span></code> - signed integer (<code class="docutils literal notranslate"><span class="pre">int64_t</span></code>)</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppnum</span></code> - real number (double)</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppname</span></code> - PDF name</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppstring</span></code> - PDF string</li>
+<li><code class="docutils literal notranslate"><span class="pre">pparray</span></code> - PDF array</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppdict</span></code> - PDF dict</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppstream</span></code> - PDF stream</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppref</span></code> - PDF indirect reference</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppobj</span></code> - a container of all above</li>
+</ul>
+<p>Among <code class="docutils literal notranslate"><span class="pre">ppint</span></code> and <code class="docutils literal notranslate"><span class="pre">ppnum</span></code>, we also use <code class="docutils literal notranslate"><span class="pre">ppuint</span></code> - unsigned integer (machine word, alias to <code class="docutils literal notranslate"><span class="pre">size_t</span></code>).</p>
+<p>Other API types:</p>
+<ul class="simple">
+<li><code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> - PDF document</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppxref</span></code> - cross-references table</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppcontext</span></code> - … later</li>
+<li><code class="docutils literal notranslate"><span class="pre">pprect</span></code> - rectangle</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppmatrix</span></code> - matrix</li>
+</ul>
+<p>Integer, number, name and string are treated as simple types.
+Names and strings are actually C-structures, but exposed to API as typedefs to <code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code>.
+Other types (array, dict, stream, reference, object container, xref, PDF) are C-structures,
+and you operate it their pointers. So when you declare a simple type variable you say:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppuint</span> <span class="n">u</span><span class="p">;</span>
+<span class="n">ppnum</span> <span class="n">n</span><span class="p">;</span>
+<span class="n">ppname</span> <span class="n">name</span><span class="p">;</span>
+<span class="n">ppstring</span> <span class="n">string</span><span class="p">;</span>
+<span class="o">...</span>
+</pre></div>
+</div>
+<p>And when you declare a compound type you operate on pointers:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+<span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">;</span>
+<span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+<span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">;</span>
+<span class="n">ppref</span> <span class="o">*</span><span class="n">ref</span><span class="p">;</span>
+<span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>Some of those C-types are defined in library header <code class="docutils literal notranslate"><span class="pre">ppapi.h</span></code> (complete types). Some others are incomplete
+(eg. you can’t say <code class="docutils literal notranslate"><span class="pre">sizeof(ppdoc)</span></code> or <code class="docutils literal notranslate"><span class="pre">sizeof(ppxref)</span></code>). This is to avoid unnecesary dependencies in
+the header. [At some points it’s not clear to me what to hide and what to expose, will see.] The library itself
+uses <code class="docutils literal notranslate"><span class="pre">pplib.h</span></code> but for auxilary applications including a standalone <code class="docutils literal notranslate"><span class="pre">ppapi.h</span></code> header should be enough.</p>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> was designed having <strong>read-only</strong> PDF access in mind. Even if some structure is completelly exposed,
+so that you can directly access its members, you should treat them as read-only. I don’t make them <code class="docutils literal notranslate"><span class="pre">const</span></code> because
+then all variable declarations would need to be <code class="docutils literal notranslate"><span class="pre">const</span></code>, which is annoying, and I’d need some trickery in the library
+internals to unconst. Besides, nothing is really const for C type casts.</p>
+</div>
+<div class="section" id="object">
+<h2>Object<a class="headerlink" href="#object" title="Permalink to this headline">¶</a></h2>
+<p>A common container for all elementary PDF object types is <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> structure. <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> has a type identifier
+(integer) and union of values:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">struct</span> <span class="n">ppobj</span> <span class="p">{</span>
+  <span class="n">ppobjtp</span> <span class="nb">type</span><span class="p">;</span>
+  <span class="n">union</span> <span class="p">{</span>
+    <span class="n">ppint</span> <span class="n">integer</span><span class="p">;</span>
+    <span class="n">ppnum</span> <span class="n">number</span><span class="p">;</span>
+    <span class="n">ppname</span> <span class="n">name</span><span class="p">;</span>
+    <span class="n">ppstring</span> <span class="n">string</span><span class="p">;</span>
+    <span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">;</span>
+    <span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+    <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">;</span>
+    <span class="n">ppref</span> <span class="o">*</span><span class="n">ref</span><span class="p">;</span>
+    <span class="n">void</span> <span class="o">*</span><span class="nb">any</span><span class="p">;</span>
+  <span class="p">};</span>
+<span class="p">};</span>
+</pre></div>
+</div>
+<p>Object type is one of constants (enum):</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">PPNONE</span>
+<span class="n">PPNULL</span>
+<span class="n">PPBOOL</span>
+<span class="n">PPINT</span>
+<span class="n">PPNUM</span>
+<span class="n">PPNAME</span>
+<span class="n">PPSTRING</span>
+<span class="n">PPARRAY</span>
+<span class="n">PPDICT</span>
+<span class="n">PPSTREAM</span>
+<span class="n">PPREF</span>
+</pre></div>
+</div>
+<p>The type determines the structure member you’re allowed to access:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+<span class="o">...</span>
+<span class="n">switch</span> <span class="p">(</span><span class="n">obj</span><span class="o">-></span><span class="nb">type</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="n">case</span> <span class="n">PPNONE</span><span class="p">:</span> <span class="o">//</span> <span class="n">shouldn</span><span class="s1">'t actually happen, indicates some failure</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPNULL</span><span class="p">:</span> <span class="o">//</span> <span class="n">valid</span> <span class="n">PDF</span> <span class="n">null</span> <span class="nb">object</span><span class="p">,</span> <span class="n">no</span> <span class="n">value</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPBOOL</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">integer</span> <span class="p">(</span><span class="n">ppint</span><span class="p">),</span> <span class="n">value</span> <span class="mi">0</span> <span class="ow">or</span> <span class="mi">1</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPINT</span><span class="p">:</span>  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">integer</span> <span class="p">(</span><span class="n">ppint</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPNUM</span><span class="p">:</span>  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">number</span> <span class="p">(</span><span class="n">ppnum</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPNAME</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">name</span> <span class="p">(</span><span class="n">ppname</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPSTRING</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">string</span> <span class="p">(</span><span class="n">ppstring</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPARRAY</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">array</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPDICT</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="nb">dict</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPSTREAM</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">stream</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPREF</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">ref</span> <span class="p">(</span><span class="n">ppref</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>More often then not you know exactly what type of object value is expected, in which case
+you may use one of the following macros:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">//</span> <span class="n">returns</span> <span class="mi">1</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPNULL</span>
+<span class="nb">int</span> <span class="n">ppobj_get_null</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>         \
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPBOOL</span><span class="p">,</span> <span class="n">sets</span> <span class="nb">int</span> <span class="n">v</span> <span class="n">to</span> <span class="mi">0</span> <span class="ow">or</span> <span class="mi">1</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_bool</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPINT</span><span class="p">,</span> <span class="n">sets</span> <span class="n">ppint</span> <span class="n">v</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_int</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPINT</span> <span class="ow">and</span> <span class="o">>=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">sets</span> <span class="n">ppuint</span> <span class="n">v</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_uint</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPNUM</span> <span class="ow">or</span> <span class="n">PPINT</span><span class="p">,</span> <span class="n">sets</span> <span class="n">ppnum</span> <span class="n">v</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_num</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPNAME</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">name</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppname</span> <span class="n">ppobj_get_name</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPSTRING</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">string</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppstring</span> <span class="n">ppobj_get_string</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPARRAY</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">array</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">pparray</span> <span class="o">*</span> <span class="n">ppobj_get_array</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPDICT</span> <span class="n">returns</span> <span class="n">the</span> <span class="nb">dict</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppobj_get_dict</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPSTREAM</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">stream</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppstream</span> <span class="o">*</span> <span class="n">ppobj_get_stream</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPREF</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">reference</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppref</span> <span class="o">*</span> <span class="n">ppobj_get_ref</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>Note the coercion from integer to real number, but not reverse. In practise, whenever you expect a real number,
+you should also handle integer (eg. ‘1’ used instead of ‘1.0’).</p>
+<p>It is a common case that the object is given as an indirect reference, but what you actually
+want is not the reference, but the object referred by it. Here is a helper for it:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPREF</span><span class="p">,</span> <span class="n">returns</span> <span class="n">what</span> <span class="n">the</span> <span class="n">reference</span> <span class="n">points</span><span class="p">,</span> <span class="n">otherwise</span> <span class="n">returns</span> <span class="n">o</span>
+<span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppobj_rget_obj</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>Also every <code class="docutils literal notranslate"><span class="pre">ppobj_get_*</span></code> macro has <code class="docutils literal notranslate"><span class="pre">ppobj_rget_*</span></code> counterpart that makes a check
+for the expected type, but if the object is PPREF, it jumps to the target object.
+So for example <code class="docutils literal notranslate"><span class="pre">ppobj_rget_dict(obj)</span></code> will return dict if <code class="docutils literal notranslate"><span class="pre">obj</span></code> is of type PPDICT
+or if it is of type PPREF and <code class="docutils literal notranslate"><span class="pre">obj->ref</span></code> hosts an object of type PPDICT.</p>
+</div>
+<div class="section" id="names">
+<h2>Names<a class="headerlink" href="#names" title="Permalink to this headline">¶</a></h2>
+<p>PDF names are represented as <code class="docutils literal notranslate"><span class="pre">ppname</span></code>.
+I find it convenient to have <code class="docutils literal notranslate"><span class="pre">ppname</span></code> type pretending <code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code>. This allows to use <code class="docutils literal notranslate"><span class="pre">ppname</span></code>
+in all C-style string functions like <code class="docutils literal notranslate"><span class="pre">printf("%s",</span> <span class="pre">name)</span></code>.</p>
+<p>Be aware, however, that <code class="docutils literal notranslate"><span class="pre">ppname</span></code> is actually a C-structure. It is perfectly ok to cast <code class="docutils literal notranslate"><span class="pre">ppname</span></code> to <code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code>:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppname</span> <span class="n">name</span><span class="p">;</span>
+<span class="o">...</span>
+<span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="p">)</span><span class="n">name</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>But reverse is forbidden:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">cstr</span> <span class="o">=</span> <span class="s2">"cstring"</span><span class="p">;</span>
+<span class="o">...</span>
+<span class="p">(</span><span class="n">ppname</span><span class="p">)</span><span class="n">cstr</span><span class="p">;</span> <span class="o">//</span> <span class="n">expect</span> <span class="n">segmentation</span> <span class="n">fault</span> <span class="n">soon</span>
+</pre></div>
+</div>
+<p>For convenient use in C, names are <code class="docutils literal notranslate"><span class="pre">'\0'</span></code> terminated. But to get the length of name better always use
+<code class="docutils literal notranslate"><span class="pre">ppname_size()</span></code> macro. <code class="docutils literal notranslate"><span class="pre">ppname</span></code> object knows its size, don’t use <code class="docutils literal notranslate"><span class="pre">strlen()</span></code>:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppname_size</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">length</span> <span class="n">of</span> <span class="n">name</span> <span class="ow">in</span> <span class="nb">bytes</span>
+</pre></div>
+</div>
+<p>In current implementation names are not hashed anyhow, so name-to-name comparison is not smarter than <code class="docutils literal notranslate"><span class="pre">memcmp()</span></code>.
+Use macros:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">ppname_is</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">,</span> <span class="s2">"literal"</span><span class="p">);</span>    <span class="o">//</span> <span class="n">to</span> <span class="n">compare</span> <span class="n">ppname</span> <span class="k">with</span> <span class="n">C</span><span class="o">-</span><span class="n">literal</span> <span class="n">string</span>
+<span class="nb">int</span> <span class="n">ppname_eq</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">,</span> <span class="n">ppname</span> <span class="n">other</span><span class="p">);</span> <span class="o">//</span> <span class="n">to</span> <span class="n">compare</span> <span class="n">ppname</span> <span class="k">with</span> <span class="n">a</span> <span class="n">different</span> <span class="n">name</span>
+</pre></div>
+</div>
+<p>If you’ll use <code class="docutils literal notranslate"><span class="pre">pplib</span></code> to parse contents streams, you may need to distinguish names from operators
+(more precisely executable names). Names in PDF are preceeded by ‘/’, executable names aren’t. In both
+cases PDF parser will produce <code class="docutils literal notranslate"><span class="pre">ppname</span></code> but can be distingushed with:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">ppname_exec</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">non</span><span class="o">-</span><span class="n">zero</span> <span class="k">if</span> <span class="n">name</span> <span class="ow">is</span> <span class="n">executable</span>
+</pre></div>
+</div>
+<p>Names are kept in their raw form, with possible PDF specific escapes (in text below we call it <strong>encoded</strong> form).
+Leading ‘/’ is omitted, though. One may need a decoded name, with no PDF escapes.
+A pair of functions provides a simple interface to switch between those two forms:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppname</span> <span class="n">ppname_decoded</span> <span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">decoded</span> <span class="p">(</span><span class="n">unescaped</span><span class="p">)</span> <span class="n">form</span> <span class="n">of</span> <span class="n">the</span> <span class="n">name</span>
+<span class="n">ppname</span> <span class="n">ppname_encoded</span> <span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">encoded</span> <span class="p">(</span><span class="n">escaped</span><span class="p">)</span> <span class="n">form</span> <span class="n">of</span> <span class="n">the</span> <span class="n">name</span>
+</pre></div>
+</div>
+<p>In pretty most cases PDF names contains only letters (no special characters, no escapes), so decoded and encoded forms are identical.
+In that case both functions simply return the argument. It is ok to call <code class="docutils literal notranslate"><span class="pre">ppname_decoded()</span></code> on already decoded form
+and <code class="docutils literal notranslate"><span class="pre">ppname_encoded()</span></code> on already encoded form. Both forms are produced by PDF objects parser, so accessing <code class="docutils literal notranslate"><span class="pre">ppname</span></code> alter ego
+in whatever direction needs no extra decoding or allocation costs.</p>
+</div>
+<div class="section" id="string">
+<h2>String<a class="headerlink" href="#string" title="Permalink to this headline">¶</a></h2>
+<p>PDF strings have the same internal construction as names, so most of names description above applies to strings as well.
+<code class="docutils literal notranslate"><span class="pre">ppstring</span></code> is a typedef of <code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code>, roughly <code class="docutils literal notranslate"><span class="pre">'\0'</span></code> terminiated C-string. To get the size of the string:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppstring_size</span><span class="p">(</span><span class="n">ppstring</span> <span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">length</span> <span class="n">of</span> <span class="n">the</span> <span class="n">string</span> <span class="ow">in</span> <span class="nb">bytes</span>
+</pre></div>
+</div>
+<p>Strings are provided in their raw form, preserving PDF specific escapes, but with no
+<code class="docutils literal notranslate"><span class="pre">()</span></code> or <code class="docutils literal notranslate"><span class="pre"><></span></code> delims. To distinguish plain strings from hex strings:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">ppstring_hex</span><span class="p">(</span><span class="n">ppstring</span> <span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">non</span> <span class="n">zero</span> <span class="k">if</span> <span class="nb">hex</span> <span class="n">string</span>
+</pre></div>
+</div>
+<p>Or if you prefer:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>switch (ppstring_type(string))
+{
+  case PPSTRING_PLAIN: // literal string, surrounded by ``(`` and ``)`` in PDF
+    break;
+  case PPSTRING_BASE16: // hex string, surrounded by ``<`` and ``>`` in PDF
+    break;
+  case PPSTRING_BASE85: // base85 string surrounded by ``<~`` and ``~>`` in PDF
+    break;
+}
+</pre></div>
+</div>
+<p>The last is actually Postscript specific, not used in PDF, but I think it might appear in contents streams…
+No matter how the string is given in PDF (plain or hex), here are two functions to
+switch between encoded and decoded strings forms:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstring</span> <span class="n">ppstring_decoded</span> <span class="p">(</span><span class="n">ppstring</span> <span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">decoded</span> <span class="n">string</span> <span class="n">possibly</span> <span class="k">with</span> <span class="n">PDF</span> <span class="n">escapes</span>
+<span class="n">ppstring</span> <span class="n">ppstring_encoded</span> <span class="p">(</span><span class="n">ppstring</span> <span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">encoded</span> <span class="n">string</span> <span class="k">with</span> <span class="n">no</span> <span class="n">PDF</span> <span class="n">escapes</span>
+</pre></div>
+</div>
+<p>For hex strings, encoded form contains hex digits, while decoded form contains arbitrary bytes (the result of hex decoding).
+Plain strings usually contains printable ASCII characters, but they might contain any binary data.
+As with names, objects parser produces both forms. The raw form with PDF escapes (or raw hex form) is considered the main one.
+Eg. when you access <code class="docutils literal notranslate"><span class="pre">obj->string</span></code> you always get the encoded form. At any moment you can switch to its alter ego.</p>
+<p>No matter if the string is plain or hex, if its first two bytes (decoded) are UTF16 BOM, the string
+is considered unicode. <code class="docutils literal notranslate"><span class="pre">ppstring</span></code> object <em>knows</em> it is unicode or not:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">switch</span> <span class="p">(</span><span class="n">ppstring_utf</span><span class="p">(</span><span class="n">string</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="n">case</span> <span class="n">PPSTRING_UTF16LE</span><span class="p">:</span> <span class="o">//</span> <span class="n">unicode</span> <span class="n">string</span><span class="p">,</span> <span class="n">utf16le</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPSTRING_UTF16BE</span><span class="p">:</span> <span class="o">//</span> <span class="n">unicode</span> <span class="n">string</span><span class="p">,</span> <span class="n">utf16be</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">default</span><span class="p">:</span>               <span class="o">//</span> <span class="n">no</span> <span class="n">unicode</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>Or simply:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span><span class="n">ppstring_utf</span><span class="p">(</span><span class="n">string</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
+  <span class="o">//</span> <span class="n">handle</span> <span class="n">unicode</span> <span class="n">string</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>If the string is unicode, BOM remains the part of the string  – <code class="docutils literal notranslate"><span class="pre">pplib</span></code> parser does not strip it.
+Unicode or not, encoded or decoded, strings are always C-arrays of bytes and <code class="docutils literal notranslate"><span class="pre">ppstring_size()</span></code>
+always returns the size in bytes.</p>
+</div>
+<div class="section" id="array">
+<h2>Array<a class="headerlink" href="#array" title="Permalink to this headline">¶</a></h2>
+<p>PDF arrays are represented as <code class="docutils literal notranslate"><span class="pre">pparray</span></code> type, which is C-array of <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> structures.
+To get the size:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">pparray_size</span><span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">number</span> <span class="n">of</span> <span class="n">array</span> <span class="n">items</span>
+</pre></div>
+</div>
+<p>To get <code class="docutils literal notranslate"><span class="pre">ppobj</span> <span class="pre">*</span></code> at a given index:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">pparray_at</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span>  <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">ppobj</span> <span class="o">*</span> <span class="p">(</span><span class="n">no</span> <span class="n">index</span> <span class="n">check</span><span class="p">)</span>
+<span class="n">ppobj</span> <span class="o">*</span> <span class="n">pparray_get</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">ppobj</span> <span class="o">*</span> <span class="ow">or</span> <span class="n">NULL</span> <span class="p">(</span><span class="k">with</span> <span class="n">index</span> <span class="n">check</span><span class="p">)</span>
+<span class="n">ppobj</span> <span class="o">*</span> <span class="n">pparray_get_obj</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>  <span class="o">//</span> <span class="n">function</span> <span class="n">equiv</span> <span class="n">to</span> <span class="n">pparray_get</span><span class="p">()</span>
+</pre></div>
+</div>
+<p>Iterating over array elements:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">;</span>
+<span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">size</span><span class="p">;</span>
+<span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+<span class="k">for</span> <span class="p">(</span><span class="n">size</span> <span class="o">=</span> <span class="n">pparray_size</span><span class="p">(</span><span class="n">array</span><span class="p">),</span> <span class="n">pparray_first</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">,</span> <span class="n">obj</span><span class="p">);</span> <span class="n">index</span> <span class="o"><</span> <span class="n">size</span><span class="p">;</span> <span class="n">pparray_next</span><span class="p">(</span><span class="n">index</span><span class="p">,</span> <span class="n">obj</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">index</span> <span class="ow">and</span> <span class="n">obj</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>There is no magic first/next macros, just iteration over pointers. One could also use something like:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="k">for</span> <span class="p">(</span><span class="n">index</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">size</span> <span class="o">=</span> <span class="n">array</span><span class="o">-></span><span class="n">size</span><span class="p">;</span> <span class="n">index</span> <span class="o"><</span> <span class="n">size</span><span class="p">;</span> <span class="o">++</span><span class="n">index</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="n">obj</span> <span class="o">=</span> <span class="n">pparray_at</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">);</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">index</span> <span class="ow">and</span> <span class="n">obj</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>When getting values from array and expecting a result of known type, use one of the following:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">pparray_get_bool</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="nb">int</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>    <span class="o">//</span> <span class="n">get</span> <span class="n">boolean</span> <span class="n">value</span>
+<span class="nb">int</span> <span class="n">pparray_get_int</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">ppint</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>   <span class="o">//</span> <span class="n">get</span> <span class="n">ppint</span> <span class="n">value</span>
+<span class="nb">int</span> <span class="n">pparray_get_uint</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">ppuint</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span> <span class="o">//</span> <span class="n">get</span> <span class="n">ppuint</span> <span class="n">value</span>
+<span class="nb">int</span> <span class="n">pparray_get_num</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">ppnum</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>   <span class="o">//</span> <span class="n">get</span> <span class="n">ppnum</span> <span class="n">value</span>
+<span class="n">ppname</span> <span class="n">pparray_get_name</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>         <span class="o">//</span> <span class="n">get</span> <span class="n">ppname</span> <span class="n">value</span>
+<span class="n">ppstring</span> <span class="n">pparray_get_string</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>     <span class="o">//</span> <span class="n">get</span> <span class="n">ppstring</span> <span class="n">value</span>
+<span class="n">pparray</span> <span class="o">*</span> <span class="n">pparray_get_array</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>     <span class="o">//</span> <span class="n">get</span> <span class="n">pparray</span> <span class="o">*</span> <span class="n">value</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">pparray_get_dict</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>       <span class="o">//</span> <span class="n">get</span> <span class="n">ppdict</span> <span class="o">*</span> <span class="n">value</span>
+<span class="n">ppref</span> <span class="o">*</span> <span class="n">pparray_get_ref</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>         <span class="o">//</span> <span class="n">get</span> <span class="n">ppref</span> <span class="o">*</span> <span class="n">value</span>
+</pre></div>
+</div>
+<p>As with <code class="docutils literal notranslate"><span class="pre">ppobj_get_*</span></code> suite, numeric types getters set the value of a given type and returns 1, if the type matches.
+Otherwise sets nothing and returns 0. Other getters return the value if the type matches, or NULL.</p>
+<p>Every function from <code class="docutils literal notranslate"><span class="pre">pparray_get_*</span></code> suite have its <code class="docutils literal notranslate"><span class="pre">pparray_rget_*</span></code> counterpart that
+that dereferences indirect objects (as explained for <code class="docutils literal notranslate"><span class="pre">ppobj_rget_*</span></code> getters). Note that
+there is no <code class="docutils literal notranslate"><span class="pre">pparray_get_stream()</span></code> function, as streams in PDF are always indirect.
+To get the stream from array use:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream</span> <span class="o">*</span> <span class="n">pparray_rget_stream</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="dict">
+<h2>Dict<a class="headerlink" href="#dict" title="Permalink to this headline">¶</a></h2>
+<p>PDF dicts are represented as <code class="docutils literal notranslate"><span class="pre">ppdict</span></code> structure, which is C-array of <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> with parallel
+C-array of <code class="docutils literal notranslate"><span class="pre">ppname</span></code> pointers. To get the size of a dict:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppdict_size</span><span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">number</span> <span class="n">of</span> <span class="n">key</span><span class="o">-</span><span class="n">val</span> <span class="n">pairs</span>
+</pre></div>
+</div>
+<p>To get the value at a given index (integer):</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppdict_at</span><span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">no</span> <span class="n">index</span> <span class="n">check</span>
+</pre></div>
+</div>
+<p>To get the name (key) at a given index:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppname</span> <span class="n">ppdict_key</span><span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">no</span> <span class="n">index</span> <span class="n">check</span>
+</pre></div>
+</div>
+<p>To iterate over dict key-val pairs:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+<span class="n">ppname</span> <span class="o">*</span><span class="n">pkey</span><span class="p">;</span>
+<span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+
+<span class="k">for</span> <span class="p">(</span><span class="n">ppdict_first</span><span class="p">(</span><span class="nb">dict</span><span class="p">,</span> <span class="n">pkey</span><span class="p">,</span> <span class="n">obj</span><span class="p">);</span> <span class="o">*</span><span class="n">pkey</span> <span class="o">!=</span> <span class="n">NULL</span><span class="p">;</span> <span class="n">ppdict_next</span><span class="p">(</span><span class="n">pkey</span><span class="p">,</span> <span class="n">obj</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="o">*</span><span class="n">pkey</span> <span class="ow">and</span> <span class="n">obj</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>There is no magic in first/next macros, just iteration through keys and values lists pointers.
+For convenient iteration, a list of keys is terminated with NULL, so in the code above <code class="docutils literal notranslate"><span class="pre">*pkey</span> <span class="pre">!=</span> <span class="pre">NULL</span></code>
+is used as the loop condition. One may also iterate via indices:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+<span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">size</span><span class="p">;</span>
+<span class="n">ppname</span> <span class="n">key</span><span class="p">;</span>
+<span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+<span class="k">for</span> <span class="p">(</span><span class="n">index</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">size</span> <span class="o">=</span> <span class="n">ppdict_size</span><span class="p">(</span><span class="nb">dict</span><span class="p">);</span> <span class="n">index</span> <span class="o"><</span> <span class="n">size</span><span class="p">;</span> <span class="o">++</span><span class="n">index</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="n">key</span> <span class="o">=</span> <span class="n">ppdict_key</span><span class="p">(</span><span class="nb">dict</span><span class="p">,</span> <span class="n">index</span><span class="p">);</span>
+  <span class="n">obj</span> <span class="o">=</span> <span class="n">ppdict_at</span><span class="p">(</span><span class="nb">dict</span><span class="p">,</span> <span class="n">index</span><span class="p">);</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">key</span> <span class="ow">and</span> <span class="n">obj</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>To get the object associated with a given name, use one of the following:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppdict_get_obj</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+<span class="nb">int</span> <span class="n">ppdict_get_bool</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="nb">int</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>
+<span class="nb">int</span> <span class="n">ppdict_get_int</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">ppint</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>
+<span class="nb">int</span> <span class="n">ppdict_get_uint</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">ppuint</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>
+<span class="nb">int</span> <span class="n">ppdict_get_num</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">ppnum</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>
+<span class="n">ppname</span> <span class="n">ppdict_get_name</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+<span class="n">ppstring</span> <span class="n">ppdict_get_string</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+<span class="n">pparray</span> <span class="o">*</span> <span class="n">ppdict_get_array</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppdict_get_dict</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+<span class="n">ppref</span> <span class="o">*</span> <span class="n">ppdict_get_ref</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Note that all getters accepts <code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code> as key, so it is ok to say:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdict_rget_dict</span><span class="p">(</span><span class="nb">dict</span><span class="p">,</span> <span class="s2">"Resources"</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>as well as:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdic_rget_dict</span><span class="p">(</span><span class="nb">dict</span><span class="p">,</span> <span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">ppname</span> <span class="n">name</span>
+</pre></div>
+</div>
+<p>Every <code class="docutils literal notranslate"><span class="pre">ppdict_get_*</span></code> getter has <code class="docutils literal notranslate"><span class="pre">ppdict_rget_*</span></code> counterpart that dereferences
+indirect objects if necessary. Note that there is no <code class="docutils literal notranslate"><span class="pre">ppdict_get_stream()</span></code> function,
+but there is:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream</span> <span class="o">*</span> <span class="n">ppdict_rget_stream</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>So far dicts comes with no names mapping, so by-name dict accessors perform a linear search
+through the keys list. PDF dicts are usually small, so it is fast enough.
+Building names lookup for every dict in PDF makes no sense I think, as <code class="docutils literal notranslate"><span class="pre">pplib</span></code> applications
+will query just several dicts I guess.. However, some apps may extensively query
+resources, which may refer to hundreds of objects (eg. images). So some mapping for dicts
+is still considered.</p>
+</div>
+<div class="section" id="stream">
+<h2>Stream<a class="headerlink" href="#stream" title="Permalink to this headline">¶</a></h2>
+<p>PDF streams are represented as <code class="docutils literal notranslate"><span class="pre">ppstream</span></code> objects. To get the stream dict:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppstream_dict</span><span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span>
+</pre></div>
+</div>
+<p>To read the stream data:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">uint8_t</span> <span class="o">*</span> <span class="n">ppstream_first</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">size</span><span class="p">,</span> <span class="nb">int</span> <span class="n">decode</span><span class="p">);</span>
+<span class="n">uint8_t</span> <span class="o">*</span> <span class="n">ppstream_next</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">size</span><span class="p">);</span>
+<span class="n">void</span> <span class="n">ppstream_done</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Both <code class="docutils literal notranslate"><span class="pre">first`</span> <span class="pre">and</span> <span class="pre">``next</span></code> functions return a chunk of stream data and sets the <code class="docutils literal notranslate"><span class="pre">size</span></code> of the chunk.
+<code class="docutils literal notranslate"><span class="pre">decode</span></code> parameter tell the reader to decompress the stream (1) or return raw (0). A call to <code class="docutils literal notranslate"><span class="pre">ppstream_next()</span></code>
+must be preceeded by <code class="docutils literal notranslate"><span class="pre">ppstream_first()</span></code>. Once you’re done with the stream, you have to call <code class="docutils literal notranslate"><span class="pre">ppstream_done()</span></code>,
+no matter if the stream has been read to the end or not. The stream data iterator in use:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">uint8_t</span> <span class="o">*</span><span class="n">data</span><span class="p">;</span>
+<span class="n">size_t</span> <span class="n">size</span><span class="p">;</span>
+<span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">;</span>
+<span class="nb">int</span> <span class="n">decode</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span> <span class="o">//</span> <span class="mi">1</span> <span class="o">-</span> <span class="n">get</span> <span class="n">decompressed</span><span class="p">,</span> <span class="mi">0</span> <span class="o">-</span> <span class="n">get</span> <span class="n">raw</span>
+
+<span class="k">for</span> <span class="p">(</span><span class="n">data</span> <span class="o">=</span> <span class="n">ppstream_first</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="n">decode</span><span class="p">);</span> <span class="n">data</span> <span class="o">!=</span> <span class="n">NULL</span><span class="p">;</span> <span class="n">data</span> <span class="o">=</span> <span class="n">ppstream_next</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">data</span> <span class="ow">and</span> <span class="n">its</span> <span class="n">size</span>
+<span class="p">}</span>
+<span class="n">ppstream_done</span><span class="p">(</span><span class="n">stream</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Every subsequent iterator call invalidates the previous reader output, so you have to utilize the returned chunk
+of data just after you ot that. So the following is wrong:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">data1</span> <span class="o">=</span> <span class="n">ppstream_first</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
+<span class="n">data2</span> <span class="o">=</span> <span class="n">ppstream_next</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">);</span>
+<span class="n">data3</span> <span class="o">=</span> <span class="n">ppstream_next</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">);</span>
+<span class="n">some_output</span><span class="p">(</span><span class="n">data1</span><span class="p">,</span> <span class="n">size</span><span class="p">);</span>
+<span class="n">some_output</span><span class="p">(</span><span class="n">data2</span><span class="p">,</span> <span class="n">size</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The reader calls usually return the same pointer to internal buffer, just filled with a different data.
+<code class="docutils literal notranslate"><span class="pre">pplib</span></code> allocates reasonably large buffer and fills that buffer on subsequent calls to the reader.</p>
+<p>If the source stream has no compression, using both <code class="docutils literal notranslate"><span class="pre">decode</span> <span class="pre">==</span> <span class="pre">1</span></code> and <code class="docutils literal notranslate"><span class="pre">decode</span> <span class="pre">==</span> <span class="pre">0</span></code> should give the same result.
+You can check if the stream is actually compressed with:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream_compressed</span><span class="p">(</span><span class="n">stream</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">non</span> <span class="n">zero</span> <span class="k">if</span> <span class="o">/</span><span class="n">Filter</span> <span class="ow">is</span> <span class="n">present</span>
+</pre></div>
+</div>
+<p>It might be necessary to load the entire stream data at once:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">uint8_t</span> <span class="o">*</span> <span class="n">ppstream_all</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">size</span><span class="p">,</span> <span class="nb">int</span> <span class="n">decode</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>If the initial buffer size is insufficient, it grows until the entire stream data is loaded. You must call
+<code class="docutils literal notranslate"><span class="pre">ppstream_done(stream)</span></code> after using returned data.</p>
+<p><code class="docutils literal notranslate"><span class="pre">ppstream_done()</span></code> doesn’t invalidate the stream object, it just closes its internal reader.
+The stream itself remains a valid object (eg. one can read it again if necessary),
+but the reader buffer is released. It is actually not freed but kept for future the reuse with that on some other stream,
+but you still need to mark it ready for reuse to avoid allocating a separate buffer for every stream you’re going to read.</p>
+<p>Stream data readers will return <code class="docutils literal notranslate"><span class="pre">NULL</span></code> if you haven’t close the previous reader process  with <code class="docutils literal notranslate"><span class="pre">ppstream_done()</span></code>. All below is wrong:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">data1</span> <span class="o">=</span> <span class="n">ppstream_all</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
+<span class="n">data2</span> <span class="o">=</span> <span class="n">ppstream_all</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span> <span class="o">//</span> <span class="n">data2</span> <span class="o">==</span> <span class="n">NULL</span>
+<span class="o">//</span> <span class="ow">or</span>
+<span class="n">data1</span> <span class="o">=</span> <span class="n">ppstream_first</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
+<span class="n">data2</span> <span class="o">=</span> <span class="n">ppstream_first</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span> <span class="o">//</span> <span class="n">data2</span> <span class="o">==</span> <span class="n">NULL</span>
+<span class="o">//</span> <span class="ow">or</span>
+<span class="n">data1</span> <span class="o">=</span> <span class="n">ppstream_first</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
+<span class="n">data2</span> <span class="o">=</span> <span class="n">ppstream_all</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span> <span class="o">//</span> <span class="n">data2</span> <span class="o">==</span> <span class="n">NULL</span>
+</pre></div>
+</div>
+<p>To avoid unnecessary dependencies, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> does not support image filters (<code class="docutils literal notranslate"><span class="pre">/DCT</span></code>, <code class="docutils literal notranslate"><span class="pre">/JPX</span></code>, <code class="docutils literal notranslate"><span class="pre">/JBIG</span></code>, <code class="docutils literal notranslate"><span class="pre">/CCITT</span></code>).
+But it is ok to read the stream with <code class="docutils literal notranslate"><span class="pre">decode</span></code> set to 1 on such streams. <code class="docutils literal notranslate"><span class="pre">pplib</span></code> assumes that the image is the
+final/target stream form and just returns it as-is. Eg. in the case of JPEG (<code class="docutils literal notranslate"><span class="pre">/DCT</span></code> filtered) image both calls should
+give the same results:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream_all</span><span class="p">(</span><span class="n">jpegstream</span><span class="p">,</span> <span class="o">&</span><span class="n">jpegsize</span><span class="p">,</span> <span class="mi">0</span><span class="p">);</span> <span class="o">//</span> <span class="n">don</span><span class="s1">'t decode, return what'</span><span class="n">s</span> <span class="n">there</span>
+<span class="n">ppstream_all</span><span class="p">(</span><span class="n">jpegstream</span><span class="p">,</span> <span class="o">&</span><span class="n">jpegsize</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span> <span class="o">//</span> <span class="n">decode</span> <span class="n">but</span> <span class="n">found</span> <span class="n">image</span> <span class="nb">filter</span><span class="p">,</span> <span class="n">effectively</span> <span class="n">the</span> <span class="n">same</span>
+</pre></div>
+</div>
+<p>A bit more about streams memory. As mentioned, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> allocates buffers for stream readers. After <code class="docutils literal notranslate"><span class="pre">ppstream_done()</span></code>,
+the stream no longer <em>owns</em> the buffer space. But the buffer may remain allocated, to be reused with future readers.
+<code class="docutils literal notranslate"><span class="pre">pplib</span></code> keeps a pool of several buffers. This means, that when you use stream readers, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> eats
+some memory (1MB or so) that is not freed, even if no streams are used. And even if you free all objects.
+If you suffer from this, you can optionally use a pair of functions:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">ppstream_init_buffers</span> <span class="p">(</span><span class="n">void</span><span class="p">);</span>
+<span class="n">void</span> <span class="n">ppstream_free_buffers</span> <span class="p">(</span><span class="n">void</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The first initializes buffers pool, unless done so far. Currently <code class="docutils literal notranslate"><span class="pre">pplib</span></code> cares of it before opening every stream reader,
+so it is not obligatory. The second frees a pool of buffers. The intended use is to call <code class="docutils literal notranslate"><span class="pre">ppstream_init_buffers()</span></code> once
+as kind of library initializer and to call <code class="docutils literal notranslate"><span class="pre">ppstream_free_buffers()</span></code> once, as the library finalizer.</p>
+</div>
+<div class="section" id="filters">
+<h2>Filters<a class="headerlink" href="#filters" title="Permalink to this headline">¶</a></h2>
+<p>In version v1.00 (20190916) <code class="docutils literal notranslate"><span class="pre">ppstream</span></code> API has been extended with filters information.
+<code class="docutils literal notranslate"><span class="pre">ppstream</span></code> knows its filter(s) and keps it as <code class="docutils literal notranslate"><span class="pre">stream->filter</span></code>:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">//</span> <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">;</span>
+<span class="n">ppstream_filter</span> <span class="o">*</span><span class="n">info</span> <span class="o">=</span> <span class="o">&</span><span class="n">stream</span><span class="o">-></span><span class="nb">filter</span><span class="p">;</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">ppstream_filter</span></code> is the following structure:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">typedef</span> <span class="n">struct</span> <span class="p">{</span>
+  <span class="n">ppstreamtp</span> <span class="o">*</span><span class="n">filters</span><span class="p">;</span> <span class="o">//</span> <span class="n">c</span><span class="o">-</span><span class="n">array</span> <span class="n">of</span> <span class="nb">filter</span> <span class="n">identifiers</span> <span class="p">(</span><span class="n">enum</span> <span class="n">integers</span><span class="p">)</span>
+  <span class="n">ppdict</span> <span class="o">**</span><span class="n">params</span><span class="p">;</span>     <span class="o">//</span> <span class="n">c</span><span class="o">-</span><span class="n">array</span> <span class="n">of</span> <span class="n">ppdict</span> <span class="n">pointers</span>
+  <span class="n">size_t</span> <span class="n">count</span><span class="p">;</span>        <span class="o">//</span> <span class="n">number</span> <span class="n">of</span> <span class="n">filters</span><span class="p">,</span> <span class="n">length</span> <span class="n">of</span> <span class="n">the</span> <span class="n">arrays</span> <span class="p">(</span><span class="n">typically</span> <span class="mi">1</span><span class="p">)</span>
+<span class="p">}</span> <span class="n">ppstream_filter</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>If <code class="docutils literal notranslate"><span class="pre">count</span> <span class="pre">></span> <span class="pre">0</span></code> then <code class="docutils literal notranslate"><span class="pre">filters</span></code> member is not NULL. Filters array keeps integer constants:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">PPSTREAM_BASE16</span>    <span class="o">/*</span> <span class="o">/</span><span class="n">ASCIIHexDecode</span>  <span class="o">*/</span>
+<span class="n">PPSTREAM_BASE85</span>    <span class="o">/*</span> <span class="o">/</span><span class="n">ASCII85Decode</span>   <span class="o">*/</span>
+<span class="n">PPSTREAM_RUNLENGTH</span> <span class="o">/*</span> <span class="o">/</span><span class="n">RunLengthDecode</span> <span class="o">*/</span>
+<span class="n">PPSTREAM_FLATE</span>     <span class="o">/*</span> <span class="o">/</span><span class="n">FlateDecode</span>     <span class="o">*/</span>
+<span class="n">PPSTREAM_LZW</span>       <span class="o">/*</span> <span class="o">/</span><span class="n">LZWDecode</span>       <span class="o">*/</span>
+<span class="n">PPSTREAM_CCITT</span>     <span class="o">/*</span> <span class="o">/</span><span class="n">CCITTFaxDecode</span>  <span class="o">*/</span>
+<span class="n">PPSTREAM_DCT</span>       <span class="o">/*</span> <span class="o">/</span><span class="n">DCTDecode</span>       <span class="o">*/</span>
+<span class="n">PPSTREAM_JBIG2</span>     <span class="o">/*</span> <span class="o">/</span><span class="n">JBIG2Decode</span>     <span class="o">*/</span>
+<span class="n">PPSTREAM_JPX</span>       <span class="o">/*</span> <span class="o">/</span><span class="n">JPXDecode</span>       <span class="o">*/</span>
+<span class="n">PPSTREAM_CRYPT</span>     <span class="o">/*</span> <span class="o">/</span><span class="n">Crypt</span>           <span class="o">*/</span>
+</pre></div>
+</div>
+<p>Params array keeps corresponding filter parameters (<code class="docutils literal notranslate"><span class="pre">/DecodeParms</span></code>) if present. <code class="docutils literal notranslate"><span class="pre">params</span></code> member is not NULL
+if <code class="docutils literal notranslate"><span class="pre">count</span> <span class="pre">></span> <span class="pre">0</span></code> and the stream dict has <code class="docutils literal notranslate"><span class="pre">/DecodeParms</span></code> entry. Even if <code class="docutils literal notranslate"><span class="pre">params</span></code> is there,
+for every N-th filter, <code class="docutils literal notranslate"><span class="pre">params[N]</span></code> may be NULL (corresponding to PDF <code class="docutils literal notranslate"><span class="pre">null</span></code>).</p>
+<p><code class="docutils literal notranslate"><span class="pre">stream->filter</span></code> keeps the source stream filter information, which may not correspond to the result of stream readers
+(<code class="docutils literal notranslate"><span class="pre">ppstream_first()</span></code>, <code class="docutils literal notranslate"><span class="pre">ppstream_next()</span></code>, <code class="docutils literal notranslate"><span class="pre">ppstream_all()</span></code>). The get the filters info relevant to the result from readers:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">ppstream_filter_info</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">ppstream_filter</span> <span class="o">*</span><span class="n">info</span><span class="p">,</span> <span class="nb">int</span> <span class="n">decode</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The function fills <code class="docutils literal notranslate"><span class="pre">ppstream_filter</span></code> structure according to the expected result from stream readers (example 3 shows
+how to use it to reconstruct <code class="docutils literal notranslate"><span class="pre">/Filter</span></code> and <code class="docutils literal notranslate"><span class="pre">/DecodeParms</span></code> when copying the stream to some other PDF).</p>
+<p>To convert filter identifier (<code class="docutils literal notranslate"><span class="pre">ppstreamtp</span></code>) to a corresponding PDF filter name:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span> <span class="n">ppstream_filter_name</span><span class="p">[];</span>
+</pre></div>
+</div>
+<p>To covert <code class="docutils literal notranslate"><span class="pre">ppname</span></code> to filter identifier:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">ppstream_filter_type</span> <span class="p">(</span><span class="n">ppname</span> <span class="n">filtername</span><span class="p">,</span> <span class="n">ppstreamtp</span> <span class="o">*</span><span class="n">filtertype</span><span class="p">);</span>
+<span class="o">//</span> <span class="n">returns</span> <span class="mi">1</span> <span class="ow">and</span> <span class="n">sets</span> <span class="n">filtertype</span> <span class="k">if</span> <span class="n">filtername</span> <span class="ow">is</span> <span class="n">the</span> <span class="n">proper</span> <span class="nb">filter</span> <span class="n">name</span>
+</pre></div>
+</div>
+<p>Additional information about the stream can be fetched from macros:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream_compressed</span><span class="p">(</span><span class="n">stream</span><span class="p">)</span> <span class="o">/*</span> <span class="n">stream</span><span class="o">-></span><span class="n">flags</span> <span class="o">&</span> <span class="p">(</span><span class="n">PPSTREAM_FILTER</span><span class="o">|</span><span class="n">PPSTREAM_IMAGE</span><span class="p">)</span> <span class="o">*/</span>
+<span class="n">ppstream_filtered</span><span class="p">(</span><span class="n">stream</span><span class="p">)</span>   <span class="o">/*</span> <span class="n">stream</span><span class="o">-></span><span class="n">flags</span> <span class="o">&</span> <span class="n">PPSTREAM_FILTER</span> <span class="o">*/</span>
+<span class="n">ppstream_image</span><span class="p">(</span><span class="n">stream</span><span class="p">)</span>      <span class="o">/*</span> <span class="n">stream</span><span class="o">-></span><span class="n">flags</span> <span class="o">*</span> <span class="n">PPSTREAM_IMAGE</span> <span class="o">*/</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">stream->flags</span></code> is a binary sum of the following:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">PPSTREAM_FILTER</span>        <span class="o">/*</span> <span class="nb">set</span> <span class="n">iff</span> <span class="n">the</span> <span class="n">stream</span> <span class="n">filters</span> <span class="nb">list</span> <span class="n">has</span> <span class="n">one</span> <span class="n">of</span><span class="p">:</span> <span class="n">BASE16</span><span class="p">,</span> <span class="n">BASE85</span><span class="p">,</span> <span class="n">RUNLENGTH</span><span class="p">,</span> <span class="n">FLATE</span><span class="p">,</span> <span class="n">LZW</span> <span class="o">*/</span>
+<span class="n">PPSTREAM_IMAGE</span>         <span class="o">/*</span> <span class="nb">set</span> <span class="n">iff</span> <span class="n">the</span> <span class="n">stream</span> <span class="n">filters</span> <span class="nb">list</span> <span class="n">has</span> <span class="n">one</span> <span class="n">of</span><span class="p">:</span> <span class="n">CCITT</span><span class="p">,</span> <span class="n">DCT</span><span class="p">,</span> <span class="n">JBIG2</span><span class="p">,</span> <span class="n">JPX</span> <span class="o">*/</span>
+<span class="n">PPSTREAM_ENCRYPTED</span>     <span class="o">/*</span> <span class="nb">set</span> <span class="n">iff</span> <span class="n">the</span> <span class="n">stream</span> <span class="ow">is</span> <span class="n">encrypted</span> <span class="o">*/</span>
+<span class="n">PPSTREAM_ENCRYPTED_OWN</span> <span class="o">/*</span> <span class="nb">set</span> <span class="n">iff</span> <span class="n">the</span> <span class="n">stream</span> <span class="n">has</span> <span class="n">own</span> <span class="n">CRYPT</span> <span class="nb">filter</span> <span class="o">*/</span>
+</pre></div>
+</div>
+<p>Note that <code class="docutils literal notranslate"><span class="pre">PPSTREAM_COMPRESSED</span></code> is not there any longer, use <code class="docutils literal notranslate"><span class="pre">ppstream_compressed()</span></code> instead.
+And there is some more, see <code class="docutils literal notranslate"><span class="pre">ppapi.h</span></code>.</p>
+</div>
+<div class="section" id="ref">
+<h2>Ref<a class="headerlink" href="#ref" title="Permalink to this headline">¶</a></h2>
+<p>Indirect objects are represented as <code class="docutils literal notranslate"><span class="pre">ppref</span></code> structure. To get the object that the
+reference refers to:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppref_obj</span><span class="p">(</span><span class="n">ppref</span> <span class="o">*</span><span class="n">ref</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">ppref</span></code> structure also keeps the reference number and version, a pointer to cross reference table it belongs
+to and others, but I guess you won’t need anything but the referenced object. <code class="docutils literal notranslate"><span class="pre">pplib</span></code> parser resolves references
+on-fly. So if there is a dict with indirect objects:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o"><<</span>
+  <span class="o">/</span><span class="n">Type</span> <span class="o">/</span><span class="n">Page</span>
+  <span class="o">/</span><span class="n">Resources</span> <span class="mi">123</span> <span class="mi">0</span> <span class="n">R</span>
+  <span class="o">...</span>
+<span class="o">>></span>
+</pre></div>
+</div>
+<p>the parser will produce <code class="docutils literal notranslate"><span class="pre">ppdict</span></code> with <code class="docutils literal notranslate"><span class="pre">Resources</span></code> key pointing the proper <code class="docutils literal notranslate"><span class="pre">ppref</span> <span class="pre">*</span></code> value.
+If you need more, access <code class="docutils literal notranslate"><span class="pre">ppref</span></code> members:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">struct</span> <span class="n">ppref</span> <span class="p">{</span>
+  <span class="n">ppobj</span> <span class="nb">object</span><span class="p">;</span>           <span class="o">//</span> <span class="n">target</span> <span class="nb">object</span>
+  <span class="n">ppuint</span> <span class="n">number</span><span class="p">,</span> <span class="n">version</span><span class="p">;</span> <span class="o">//</span> <span class="n">identifiers</span>
+  <span class="n">size_t</span> <span class="n">offset</span><span class="p">;</span>          <span class="o">//</span> <span class="n">file</span> <span class="n">offset</span> <span class="p">(</span><span class="n">useless</span> <span class="k">for</span> <span class="n">you</span><span class="p">,</span> <span class="n">may</span> <span class="n">be</span> <span class="n">zero</span> <span class="k">for</span> <span class="n">compressed</span> <span class="n">objects</span><span class="p">)</span>
+  <span class="n">ppuint</span> <span class="n">length</span><span class="p">;</span>          <span class="o">//</span> <span class="n">the</span> <span class="n">length</span> <span class="n">of</span> <span class="n">the</span> <span class="n">original</span> <span class="nb">object</span> <span class="n">data</span>
+  <span class="n">ppxref</span> <span class="o">*</span><span class="n">xref</span><span class="p">;</span>           <span class="o">//</span> <span class="n">cross</span> <span class="n">reference</span> <span class="n">table</span> <span class="n">it</span> <span class="n">belongs</span> <span class="n">to</span>
+<span class="p">};</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="xref">
+<h2>XRef<a class="headerlink" href="#xref" title="Permalink to this headline">¶</a></h2>
+<p>Cross reference table is exposed as <code class="docutils literal notranslate"><span class="pre">ppxref</span></code> (incomplete type, you can only oprate on its pointer).
+To get top document xref:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppxref</span> <span class="o">*</span> <span class="n">ppdoc_xref</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To get previous (older) xref:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppxref</span> <span class="o">*</span> <span class="n">ppxref_prev</span> <span class="p">(</span><span class="n">ppxref</span> <span class="o">*</span><span class="n">xref</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To find an object of a given refnumber:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppref</span> <span class="o">*</span> <span class="n">ppxref_find</span> <span class="p">(</span><span class="n">ppxref</span> <span class="o">*</span><span class="n">xref</span><span class="p">,</span> <span class="n">ppuint</span> <span class="n">refnumber</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>[Note: since pplib v0.98 in case of documents with incremental update, <code class="docutils literal notranslate"><span class="pre">ppxref_find()</span></code> returns
+the newest available version of a given object rather than the object in a given body.]</p>
+</div>
+<div class="section" id="pdf">
+<h2>PDF<a class="headerlink" href="#pdf" title="Permalink to this headline">¶</a></h2>
+<p>PDF document is represented as <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> structure (incomplete type, you can only operate on its pointer).
+To load a document from file:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdoc</span> <span class="o">*</span> <span class="n">ppdoc_load</span> <span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">filename</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To load a document from memory data:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdoc</span> <span class="o">*</span> <span class="n">ppdoc_mem</span> <span class="p">(</span><span class="n">const</span> <span class="n">void</span> <span class="o">*</span><span class="n">data</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">size</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The data is assumed to be a buffer allocated with <code class="docutils literal notranslate"><span class="pre">malloc</span></code> - it is freed when destroying <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code>.</p>
+<p>Both loaders returns <code class="docutils literal notranslate"><span class="pre">NULL</span></code> on failure.</p>
+<p>To free <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> and all objects it refers to:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">ppdoc_free</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>So far we haven’t mention about any explicit object reclaimers. There are no dedicated <code class="docutils literal notranslate"><span class="pre">free</span></code> functions
+for other objects. You don’t allocate or free objects yourself. <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> object is an owner of all
+beings it refers to. It also means that every object described so far is alive as long as the containing
+<code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> is alive.</p>
+<p>To access main PDF dicts:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppdoc_trailer</span><span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">top</span> <span class="n">xref</span> <span class="n">trailer</span> <span class="nb">dict</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppdoc_catalog</span><span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">catalog</span> <span class="n">referred</span> <span class="kn">from</span> <span class="nn">the</span> <span class="n">trailer</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppdoc_info</span><span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>    <span class="o">//</span> <span class="n">returns</span> <span class="n">info</span> <span class="nb">dict</span> <span class="n">referred</span> <span class="kn">from</span> <span class="nn">the</span> <span class="n">trailer</span>
+</pre></div>
+</div>
+<p>To get the PDF version:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span> <span class="n">ppdoc_version_string</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>    <span class="o">//</span> <span class="n">version</span> <span class="n">string</span>
+<span class="nb">int</span> <span class="n">ppdoc_version_number</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">,</span> <span class="nb">int</span> <span class="o">*</span><span class="n">minor</span><span class="p">);</span> <span class="o">//</span> <span class="n">minor</span> <span class="ow">and</span> <span class="n">major</span> <span class="n">numbers</span>
+</pre></div>
+</div>
+<p>To get the file size of the source PDF document:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppdoc_file_size</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To get the number of objects in all xrefs:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppuint</span> <span class="n">ppdoc_objects</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To get the approx usage of memory:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppdoc_memory</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">waste</span><span class="p">);</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="encryption">
+<h2>Encryption<a class="headerlink" href="#encryption" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> handles encrypted (password protected) documents. If a document is encrypted, most of strings and streams are ciphered.
+In that form they are unreadable and rather useless, you can’t even rewrite such strings/streams as-is to a different PDF output.
+It is a common practise to <em>protect</em> documents with an empty password. Such documents remain readable in Acrobat (just opens them without prompting
+for a password), but some features (eg. printing) may restricted by the application.</p>
+<p>When <code class="docutils literal notranslate"><span class="pre">pplib</span></code> detects encryption, it follows Acrobat approach and first tries an empty password. If it succeeds, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> proceeeds normally, providing
+an access to decrypted strings and streams, as if they weren’t ciphered. If the document is protected with non-empty password, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> gives
+a way to provide a password and proceed. Until you provide a password, <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> object returned by <code class="docutils literal notranslate"><span class="pre">ppdoc_load()</span></code> function has all object wntries
+set to <code class="docutils literal notranslate"><span class="pre">null</span></code>.</p>
+<p>After loading a document you should check encryption status with:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppcrypt_status</span> <span class="n">ppdoc_crypt_status</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">ppcrypt_status</span></code> (integer) may have the following values:</p>
+<blockquote>
+<div><code class="docutils literal notranslate"><span class="pre">PPCRYPT_NONE</span></code> - no encryption, go ahead
+<code class="docutils literal notranslate"><span class="pre">PPCRYPT_DONE</span></code> - encryption present but password succeeded, go ahead
+<code class="docutils literal notranslate"><span class="pre">PPCRYPT_PASS</span></code> - encryption present, need non-empty password
+<code class="docutils literal notranslate"><span class="pre">PPCRYPT_FAIL</span></code> - invalid or unsupported encryption (eg. undocumented in pdf spec)</div></blockquote>
+<p>If a password is needed, you can provide one with:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppcrypt_status</span> <span class="n">ppdoc_crypt_pass</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">,</span> <span class="n">const</span> <span class="n">void</span> <span class="o">*</span><span class="n">userpass</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">userpasslength</span><span class="p">,</span>
+                                             <span class="n">const</span> <span class="n">void</span> <span class="o">*</span><span class="n">ownerpass</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">ownerpasslength</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Well, yes, there are actually two passwords in encrypted documents. Relation between them is obscure to me, but enough
+to know that having one of them is enough to decrypt the document. If you know the password, you probably mean
+<code class="docutils literal notranslate"><span class="pre">userpass</span></code>, in which case you should put <code class="docutils literal notranslate"><span class="pre">NULL</span></code> as <code class="docutils literal notranslate"><span class="pre">ownerpass</span></code>. The function returns <code class="docutils literal notranslate"><span class="pre">PPCRYPT_DONE</span></code> if the password
+succeeds and the previous status otherwise. Your custom loader function may look like that:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">;</span>
+<span class="n">pdf</span> <span class="o">=</span> <span class="n">ppdoc_load</span><span class="p">(</span><span class="s2">"file.pdf"</span><span class="p">);</span>
+<span class="k">if</span> <span class="p">(</span><span class="n">pdf</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">)</span>
+  <span class="k">return</span> <span class="n">NULL</span><span class="p">;</span>
+<span class="n">switch</span> <span class="p">(</span><span class="n">ppdoc_crypt_status</span><span class="p">(</span><span class="n">pdf</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="n">case</span> <span class="n">PPCRYPT_NONE</span><span class="p">:</span>
+  <span class="n">case</span> <span class="n">PPCRYPT_DONE</span><span class="p">:</span>
+    <span class="k">return</span> <span class="n">pdf</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPCRYPT_PASS</span><span class="p">:</span>
+    <span class="k">if</span> <span class="p">(</span><span class="n">ppdoc_crypt_pass</span><span class="p">(</span><span class="n">pdf</span><span class="p">,</span> <span class="s2">"dummy"</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="n">NULL</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">==</span> <span class="n">PPCRYPT_DONE</span> <span class="o">||</span>
+        <span class="n">ppdoc_crypt_pass</span><span class="p">(</span><span class="n">pdf</span><span class="p">,</span> <span class="n">NULL</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="s2">"dummy"</span><span class="p">,</span> <span class="mi">5</span><span class="p">)</span> <span class="o">==</span> <span class="n">PPCRYPT_DONE</span><span class="p">)</span>
+      <span class="k">return</span> <span class="n">pdf</span><span class="p">;</span>
+    <span class="n">printf</span><span class="p">(</span><span class="s2">"sorry, password needed</span><span class="se">\n</span><span class="s2">"</span><span class="p">);</span>
+    <span class="n">ppdoc_free</span><span class="p">(</span><span class="n">pdf</span><span class="p">);</span>
+    <span class="k">return</span> <span class="n">NULL</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPCRYPT_FAIL</span><span class="p">:</span>
+    <span class="n">printf</span><span class="p">(</span><span class="s2">"sorry, encryption failed</span><span class="se">\n</span><span class="s2">"</span><span class="p">);</span>
+    <span class="n">ppdoc_free</span><span class="p">(</span><span class="n">pdf</span><span class="p">);</span>
+    <span class="k">return</span> <span class="n">NULL</span><span class="p">;</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>[If you get <code class="docutils literal notranslate"><span class="pre">PPCRYPT_FAIL</span></code> it might mean <em>I failed</em>, so treat as a bug.]</p>
+<p>If you’d like to know what permissions are given/restricted to encrypted document:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppint</span> <span class="n">ppdoc_permissions</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Returned value can be queried with the following binary flags (you can verify with Acrobat <em>File -> Properties -> Security</em> tab):</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">PPDOC_ALLOW_PRINT</span>       <span class="o">//</span> <span class="n">printing</span>
+<span class="n">PPDOC_ALLOW_MODIFY</span>      <span class="o">//</span> <span class="n">filling</span> <span class="n">form</span> <span class="n">fields</span><span class="p">,</span> <span class="n">signing</span><span class="p">,</span> <span class="n">creating</span> <span class="n">template</span> <span class="n">pages</span>
+<span class="n">PPDOC_ALLOW_COPY</span>        <span class="o">//</span> <span class="n">copying</span><span class="p">,</span> <span class="n">copying</span> <span class="k">for</span> <span class="n">accessibility</span>
+<span class="n">PPDOC_ALLOW_ANNOTS</span>      <span class="o">//</span> <span class="n">filling</span> <span class="n">form</span> <span class="n">fields</span><span class="p">,</span> <span class="n">copying</span><span class="p">,</span> <span class="n">signing</span>
+<span class="n">PPDOC_ALLOW_EXTRACT</span>     <span class="o">//</span> <span class="n">contents</span> <span class="n">copying</span> <span class="k">for</span> <span class="n">accessibility</span>
+<span class="n">PPDOC_ALLOW_ASSEMBLY</span>    <span class="o">//</span> <span class="p">(</span><span class="n">no</span> <span class="n">effect</span><span class="p">)</span>
+<span class="n">PPDOC_ALLOW_PRINT_HIRES</span> <span class="o">//</span> <span class="p">(</span><span class="n">no</span> <span class="n">effect</span><span class="p">)</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> does absolutelly nothing with permissions, it cares only to decrypt the document. As mentioned, encryption applies to strings
+and streams. <code class="docutils literal notranslate"><span class="pre">pplib</span></code> decrypt strings when parsing document objects, so the result you get is <em>normal</em> (not ciphered).
+Streams are decrypted whenever you access them. Even if you ask for a raw stream data, you’ll get a raw (compressed) stream, but decrypted.
+So except the check to <code class="docutils literal notranslate"><span class="pre">ppdoc_crypt_status()</span></code>, you shouldn’t bother about encryption.</p>
+<p>In encrypted documents most of streams are encrypted. To check if a given stream is encrypted:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream_encrypted</span><span class="p">(</span><span class="n">stream</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">non</span><span class="o">-</span><span class="n">zero</span> <span class="k">if</span> <span class="n">encrypted</span>
+</pre></div>
+</div>
+<p>Encryption is independent from compression, don’t confuse with <code class="docutils literal notranslate"><span class="pre">ppstream_compressed()</span></code></p>
+</div>
+<div class="section" id="pages">
+<h2>Pages<a class="headerlink" href="#pages" title="Permalink to this headline">¶</a></h2>
+<p>Several helpers to deal with pages. To get the number of pages:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppuint</span> <span class="n">ppdoc_page_count</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To access the root pages tree node:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppref</span> <span class="o">*</span> <span class="n">ppdoc_pages</span><span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To get the page reference at a given index:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppref</span> <span class="o">*</span> <span class="n">ppdoc_page</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">,</span> <span class="n">ppuint</span> <span class="n">index</span><span class="p">);</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">index</span></code> is a page number. First page has number 1. For index out of bounds <code class="docutils literal notranslate"><span class="pre">ppdoc_page()</span></code> returns NULL.
+Iterating over pages using index from 1 to <code class="docutils literal notranslate"><span class="pre">ppdoc_page_count()</span></code> and calling <code class="docutils literal notranslate"><span class="pre">ppdoc_page()</span></code> on each iteration
+would be suboptimal. Here is a dedicted iterator for this:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppref</span> <span class="o">*</span>  <span class="n">ppdoc_first_page</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+<span class="n">ppref</span> <span class="o">*</span> <span class="n">ppdoc_next_page</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The iterator in use:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">;</span>
+<span class="n">ppref</span> <span class="o">*</span><span class="n">ref</span><span class="p">;</span>
+<span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+<span class="nb">int</span> <span class="n">pageno</span><span class="p">;</span>
+
+<span class="n">pdf</span> <span class="o">=</span> <span class="n">ppdoc_load</span><span class="p">(</span><span class="s2">"file.pdf"</span><span class="p">);</span>
+<span class="k">for</span> <span class="p">(</span><span class="n">ref</span> <span class="o">=</span> <span class="n">ppdoc_first_page</span><span class="p">(</span><span class="n">pdf</span><span class="p">),</span> <span class="n">pageno</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span> <span class="n">ref</span> <span class="o">!=</span> <span class="n">NULL</span><span class="p">;</span> <span class="n">ref</span> <span class="o">=</span> <span class="n">ppdoc_next_page</span><span class="p">(</span><span class="n">pdf</span><span class="p">),</span> <span class="o">++</span><span class="n">pageno</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="nb">dict</span> <span class="o">=</span> <span class="n">ppref_obj</span><span class="p">(</span><span class="n">obj</span><span class="p">)</span><span class="o">-></span><span class="nb">dict</span><span class="p">;</span> <span class="o">//</span> <span class="n">take</span> <span class="k">for</span> <span class="n">granted</span> <span class="n">it</span> <span class="ow">is</span> <span class="n">a</span> <span class="nb">dict</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">the</span> <span class="n">page</span> <span class="nb">dict</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>Functions related to pages return <code class="docutils literal notranslate"><span class="pre">ppref</span> <span class="pre">*</span></code> ensured to contain dict object, so you don’t need sanity
+type checks here.</p>
+</div>
+<div class="section" id="contents">
+<h2>Contents<a class="headerlink" href="#contents" title="Permalink to this headline">¶</a></h2>
+<p>PDF page contents can be given as a stream or array of streams. Here is a convenience iterator over page
+contents streams:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream</span> <span class="o">*</span> <span class="n">ppcontents_first</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">);</span>
+<span class="n">ppstream</span> <span class="o">*</span> <span class="n">ppcontents_next</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>A complete example of contents stream parser use is given below (example 2).
+But before we get there, we need to introduce <code class="docutils literal notranslate"><span class="pre">ppcontext</span></code> object. Conceptually,
+<code class="docutils literal notranslate"><span class="pre">ppcontext</span></code> is an owner (memory handler) of objects created on demand (beyond the <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code>).
+So far used only with contents stream parser, which might produce quite some data that we want
+to release just after used. To create a new context:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pcontext</span> <span class="o">*</span> <span class="n">ppcontext_new</span> <span class="p">(</span><span class="n">void</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>It initializes a new context and its internal memory heap, taking about 64kB on start. After that,
+the context is ready to produce objects (contents parsing functions below). Once objects produced
+from a given context are no longer needed:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">ppcontext_done</span> <span class="p">(</span><span class="n">ppcontext</span> <span class="o">*</span><span class="n">context</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>It restores the context to its initial state, as after <code class="docutils literal notranslate"><span class="pre">ppcontext_new()</span></code>. It means that the context
+is ready to produce another bunch of beings (in the example below, all objects from the next page contents).
+Once the context is not needed anymore:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">ppcontext_free</span> <span class="p">(</span><span class="n">ppcontext</span> <span class="o">*</span><span class="n">context</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Now, contents stream parser functions take the context as an argument. Iterator form of contents stream parser
+that allows to process the contents operator by operator:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppcontents_first_op</span> <span class="p">(</span><span class="n">ppcontext</span> <span class="o">*</span><span class="n">context</span><span class="p">,</span> <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">psize</span><span class="p">,</span> <span class="n">ppname</span> <span class="o">*</span><span class="n">pname</span><span class="p">);</span>
+<span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppcontents_next_op</span> <span class="p">(</span><span class="n">ppcontext</span> <span class="o">*</span><span class="n">context</span><span class="p">,</span> <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">psize</span><span class="p">,</span> <span class="n">ppname</span> <span class="o">*</span><span class="n">pname</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Returned <code class="docutils literal notranslate"><span class="pre">ppobj</span> <span class="pre">*</span></code> is a pointer to operands list. <code class="docutils literal notranslate"><span class="pre">*psize</span></code> is the number of operands on stack.
+The operator itself is stored as <code class="docutils literal notranslate"><span class="pre">*pname</span></code>.</p>
+<p>To parse the entire contents stream at once with no stop at every operator:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppcontents_parse</span> <span class="p">(</span><span class="n">ppcontext</span> <span class="o">*</span><span class="n">context</span><span class="p">,</span> <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">psize</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Returns probably quite long list of all parsed objects (operands and operatos) in one piece.
+The number of objects is stored to <code class="docutils literal notranslate"><span class="pre">*psize</span></code>.</p>
+<p>[Contents may contain so called inline images, that breaks a simple scheme of operands / operator syntax:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">BI</span> <span class="o"><</span><span class="n">keyval</span> <span class="n">pairs</span><span class="o">></span> <span class="n">ID</span> <span class="o"><</span><span class="n">binary</span> <span class="n">image</span> <span class="n">data</span><span class="o">></span> <span class="n">EI</span>
+</pre></div>
+</div>
+<p>Contents parser treats this genuine triplet as a single piece, producing two operands (dict and string)
+followed by <code class="docutils literal notranslate"><span class="pre">EI</span></code> operator name.]</p>
+</div>
+<div class="section" id="boxes">
+<h2>Boxes<a class="headerlink" href="#boxes" title="Permalink to this headline">¶</a></h2>
+<p>Boxes (rectangles) in PDF are roughly 4-number arrays, but with a special intent.
+<code class="docutils literal notranslate"><span class="pre">pplib</span></code> provides a basic interface for these special arrays:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">typedef</span> <span class="n">struct</span> <span class="p">{</span>
+  <span class="n">ppnum</span> <span class="n">lx</span><span class="p">,</span> <span class="n">ly</span><span class="p">,</span> <span class="n">rx</span><span class="p">,</span> <span class="n">ry</span><span class="p">;</span>
+<span class="p">}</span> <span class="n">pprect</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>This type is used only by helper functions - PDF parser is not aware of the rectangle type.
+To convert <code class="docutils literal notranslate"><span class="pre">pparray</span></code> to <code class="docutils literal notranslate"><span class="pre">pprect</span></code>:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pprect</span> <span class="o">*</span> <span class="n">pparray_to_rect</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">pprect</span> <span class="o">*</span><span class="n">rect</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">rect</span> <span class="ow">or</span> <span class="n">NULL</span>
+</pre></div>
+</div>
+<p>In example:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pprect</span> <span class="n">rect</span><span class="p">;</span>
+<span class="k">if</span> <span class="p">(</span><span class="n">pparray_to_rect</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="o">&</span><span class="n">rect</span><span class="p">)</span> <span class="o">!=</span> <span class="n">NULL</span><span class="p">)</span>
+ <span class="p">;</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">rect</span>
+</pre></div>
+</div>
+<p>To get some image bounding box:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pprect</span> <span class="o">*</span> <span class="n">ppdict_get_rect</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">pprect</span> <span class="o">*</span><span class="n">rect</span><span class="p">);</span>
+<span class="o">//</span> <span class="n">eg</span><span class="o">.</span> <span class="n">ppdict_get_rect</span><span class="p">(</span><span class="n">imagedict</span><span class="p">,</span> <span class="s2">"BBox"</span><span class="p">,</span> <span class="o">&</span><span class="n">rect</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>To get some page box:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pprect</span> <span class="o">*</span> <span class="n">ppdict_get_box</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">pprect</span> <span class="o">*</span><span class="n">rect</span><span class="p">);</span>
+<span class="o">//</span> <span class="n">eg</span><span class="o">.</span> <span class="n">ppdict_get_box</span><span class="p">(</span><span class="n">pagedict</span><span class="p">,</span> <span class="s2">"MediaBox"</span><span class="p">,</span> <span class="o">&</span><span class="n">rect</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>The later not only checks the pagedict, but also goes through parent page nodes.</p>
+</div>
+<div class="section" id="transforms">
+<h2>Transforms<a class="headerlink" href="#transforms" title="Permalink to this headline">¶</a></h2>
+<p>Transformations are given as 6-number arrays, but with a special intent.
+<code class="docutils literal notranslate"><span class="pre">pplib</span></code> provides a basic interface for these special arrays:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">typedef</span> <span class="n">struct</span> <span class="p">{</span>
+  <span class="n">ppnum</span> <span class="n">xx</span><span class="p">,</span> <span class="n">xy</span><span class="p">,</span> <span class="n">yx</span><span class="p">,</span> <span class="n">yy</span><span class="p">,</span> <span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">;</span>
+<span class="p">}</span> <span class="n">ppmatrix</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>This type is used only by helper functions - PDF parser is not aware of the matrix type.
+To convert <code class="docutils literal notranslate"><span class="pre">pparray</span></code> to <code class="docutils literal notranslate"><span class="pre">ppmatrix</span></code>:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppmatrix</span> <span class="o">*</span> <span class="n">pparray_to_matrix</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">ppmatrix</span> <span class="o">*</span><span class="n">matrix</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>In example:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppmatrix</span> <span class="n">matrix</span><span class="p">;</span>
+<span class="k">if</span> <span class="p">(</span><span class="n">pparray_to_matrix</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="o">&</span><span class="n">matrix</span><span class="p">)</span> <span class="o">!=</span> <span class="n">NULL</span><span class="p">)</span>
+  <span class="p">;</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">matrix</span>
+</pre></div>
+</div>
+<p>To get the matrix from dict:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppmatrix</span> <span class="o">*</span> <span class="n">ppdict_get_matrix</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">ppmatrix</span> <span class="o">*</span><span class="n">matrix</span><span class="p">);</span>
+<span class="o">//</span> <span class="n">eg</span><span class="o">.</span> <span class="n">ppdict_get_matrix</span><span class="p">(</span><span class="n">imagedict</span><span class="p">,</span> <span class="s2">"Matrix"</span><span class="p">,</span> <span class="o">&</span><span class="n">matrix</span><span class="p">)</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="errors-handling">
+<h2>Errors handling<a class="headerlink" href="#errors-handling" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> is not verbose, but might happen that it needs to log some error message, eg. when parsing
+of some PDF boject fails due to invalid offsets. By default, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> prints the message to stdout, eg.:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">invalid</span> <span class="mi">123</span> <span class="mi">0</span> <span class="n">R</span> <span class="nb">object</span> <span class="n">at</span> <span class="n">offset</span> <span class="mi">123123</span>
+</pre></div>
+</div>
+<p>To replace the default logger, you can provide your own:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">pplog_callback</span> <span class="p">(</span><span class="n">pplogger_callback</span> <span class="n">logger</span><span class="p">,</span> <span class="n">void</span> <span class="o">*</span><span class="n">alien</span><span class="p">);</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">pplogger_callback</span></code> is a function:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">your_callback</span> <span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">message</span><span class="p">,</span> <span class="n">void</span> <span class="o">*</span><span class="n">alien</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>In example, to redirect messages to stderr you may define a function:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">your_callback</span> <span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">message</span><span class="p">,</span> <span class="n">void</span> <span class="o">*</span><span class="n">alien</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="n">fprintf</span><span class="p">((</span><span class="n">FILE</span> <span class="o">*</span><span class="p">)</span><span class="n">alien</span><span class="p">,</span> <span class="s2">"</span><span class="se">\n</span><span class="s2">ooops: </span><span class="si">%s</span><span class="se">\n</span><span class="s2">"</span><span class="p">,</span> <span class="n">message</span><span class="p">);</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>Then set the callback somewhere before loading documents:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pplog_callback</span><span class="p">(</span><span class="n">your_callback</span><span class="p">,</span> <span class="n">stderr</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>(example 2 uses that).</p>
+<p>To set the default log messages prefix, eg. <code class="docutils literal notranslate"><span class="pre">pplib:</span></code>, use:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">pplog_prefix</span> <span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">prefix</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>Default is empty. The function succeeds if provided prefix is reasonably short (less then 32 bytes).</p>
+</div>
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
+    <div class="related" role="navigation" aria-label="related navigation">
+      <h3>Navigation</h3>
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@@ -0,0 +1,1031 @@
+
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+    <meta http-equiv="X-UA-Compatible" content="IE=Edge" />
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+    <title>pplib 2.x — pplib 0.1 documentation</title>
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+             accesskey="N">next</a> |</li>
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+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+  <h3><a href="pplib.html">Table of Contents</a></h3>
+  <ul>
+<li><a class="reference internal" href="#"><code class="docutils literal notranslate"><span class="pre">pplib</span></code> 2.x</a></li>
+<li><a class="reference internal" href="#c-api">C-API</a><ul>
+<li><a class="reference internal" href="#types">Types</a></li>
+<li><a class="reference internal" href="#object">Object</a></li>
+<li><a class="reference internal" href="#names">Names</a></li>
+<li><a class="reference internal" href="#string">String</a></li>
+<li><a class="reference internal" href="#array">Array</a></li>
+<li><a class="reference internal" href="#dict">Dict</a></li>
+<li><a class="reference internal" href="#stream">Stream</a></li>
+<li><a class="reference internal" href="#filters">Filters</a></li>
+<li><a class="reference internal" href="#ref">Ref</a></li>
+<li><a class="reference internal" href="#xref">XRef</a></li>
+<li><a class="reference internal" href="#pdf">PDF</a></li>
+<li><a class="reference internal" href="#encryption">Encryption</a></li>
+<li><a class="reference internal" href="#pages">Pages</a></li>
+<li><a class="reference internal" href="#contents">Contents</a></li>
+<li><a class="reference internal" href="#boxes">Boxes</a></li>
+<li><a class="reference internal" href="#transforms">Transforms</a></li>
+<li><a class="reference internal" href="#errors-handling">Errors handling</a></li>
+</ul>
+</li>
+</ul>
+
+  <h4>Previous topic</h4>
+  <p class="topless"><a href="ppnew.html"
+                        title="previous chapter">1.x vs 2.x</a></p>
+  <h4>Next topic</h4>
+  <p class="topless"><a href="ppapi-1.x.html"
+                        title="next chapter"><code class="docutils literal notranslate"><span class="pre">pplib</span></code> 1.x</a></p>
+  <div role="note" aria-label="source link">
+    <h3>This Page</h3>
+    <ul class="this-page-menu">
+      <li><a href="_sources/ppapi-2.x.rst.txt"
+            rel="nofollow">Show Source</a></li>
+    </ul>
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+  <h3>Quick search</h3>
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+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          <div class="body" role="main">
+            
+  <div class="section" id="pplib-2-x">
+<h1><code class="docutils literal notranslate"><span class="pre">pplib</span></code> 2.x<a class="headerlink" href="#pplib-2-x" title="Permalink to this headline">¶</a></h1>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> is a library for raw PDF access. It parses PDF documents and provides an interface to access document structures in C.</p>
+</div>
+<div class="section" id="c-api">
+<h1>C-API<a class="headerlink" href="#c-api" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="types">
+<h2>Types<a class="headerlink" href="#types" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> defines several C-types to represent PDF types:</p>
+<ul class="simple">
+<li><code class="docutils literal notranslate"><span class="pre">ppbyte</span></code> - char</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppint</span></code> - signed integer (<code class="docutils literal notranslate"><span class="pre">int64_t</span></code>)</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppnum</span></code> - real number (double)</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppname</span></code> - PDF name</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppstring</span></code> - PDF string</li>
+<li><code class="docutils literal notranslate"><span class="pre">pparray</span></code> - PDF array</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppdict</span></code> - PDF dict</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppstream</span></code> - PDF stream</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppref</span></code> - PDF indirect reference</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppobj</span></code> - a container of all above</li>
+</ul>
+<p>Among <code class="docutils literal notranslate"><span class="pre">ppint</span></code> and <code class="docutils literal notranslate"><span class="pre">ppnum</span></code>, we also use <code class="docutils literal notranslate"><span class="pre">ppuint</span></code> - unsigned integer (machine word, alias to <code class="docutils literal notranslate"><span class="pre">size_t</span></code>).</p>
+<p>Other API types:</p>
+<ul class="simple">
+<li><code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> - PDF document</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppxref</span></code> - cross-references table</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppcontext</span></code> - … later</li>
+<li><code class="docutils literal notranslate"><span class="pre">pprect</span></code> - rectangle</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppmatrix</span></code> - matrix</li>
+</ul>
+<p>Integer and number are as simple types. Names and strings used to be aliases to <code class="docutils literal notranslate"><span class="pre">char</span> <span class="pre">*</span></code>
+in <code class="docutils literal notranslate"><span class="pre">pplib</span> <span class="pre">1.x</span></code>, now they are structures; all related API functions operate on pointers.
+Other types (array, dict, stream, reference, object container, xref, doc) are C-structures,
+and you operate it their pointers. So when you declare a simple type variable you say:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppuint</span> <span class="n">u</span><span class="p">;</span>
+<span class="n">ppnum</span> <span class="n">n</span><span class="p">;</span>
+<span class="o">...</span>
+</pre></div>
+</div>
+<p>And when you declare a compound type you operate on pointers:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+<span class="n">ppname</span> <span class="o">*</span><span class="n">name</span><span class="p">;</span>
+<span class="n">ppstring</span> <span class="o">*</span><span class="n">string</span><span class="p">;</span>
+<span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">;</span>
+<span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+<span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">;</span>
+<span class="n">ppref</span> <span class="o">*</span><span class="n">ref</span><span class="p">;</span>
+<span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>Most of those C-types are defined in library header <code class="docutils literal notranslate"><span class="pre">ppapi.h</span></code> (complete types). Some others are incomplete
+(eg. you can’t say <code class="docutils literal notranslate"><span class="pre">sizeof(ppdoc)</span></code> or <code class="docutils literal notranslate"><span class="pre">sizeof(ppxref)</span></code>). This is to avoid unnecesary dependencies in
+the header. The library itself uses <code class="docutils literal notranslate"><span class="pre">pplib.h</span></code> header but for auxilary applications including a standalone
+<code class="docutils literal notranslate"><span class="pre">ppapi.h</span></code> header should be enough.</p>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> was designed having <strong>read-only</strong> PDF access in mind. Even if some structure is completelly exposed,
+so that you can directly access its members, you should treat them as read-only. I don’t make them <code class="docutils literal notranslate"><span class="pre">const</span></code> because
+then all variable declarations would need to be <code class="docutils literal notranslate"><span class="pre">const</span></code>, which is annoying, and I’d need some trickery in the library
+internals to unconst. Besides, nothing is really const for C type casts.</p>
+</div>
+<div class="section" id="object">
+<h2>Object<a class="headerlink" href="#object" title="Permalink to this headline">¶</a></h2>
+<p>A common container for all elementary PDF object types is <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> structure. <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> has a type identifier
+(integer) and union of values:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">struct</span> <span class="n">ppobj</span> <span class="p">{</span>
+  <span class="n">ppobjtp</span> <span class="nb">type</span><span class="p">;</span>
+  <span class="n">union</span> <span class="p">{</span>
+    <span class="n">ppint</span> <span class="n">integer</span><span class="p">;</span>
+    <span class="n">ppnum</span> <span class="n">number</span><span class="p">;</span>
+    <span class="n">ppname</span> <span class="o">*</span><span class="n">name</span><span class="p">;</span>
+    <span class="n">ppstring</span> <span class="o">*</span><span class="n">string</span><span class="p">;</span>
+    <span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">;</span>
+    <span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+    <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">;</span>
+    <span class="n">ppref</span> <span class="o">*</span><span class="n">ref</span><span class="p">;</span>
+    <span class="n">void</span> <span class="o">*</span><span class="nb">any</span><span class="p">;</span>
+  <span class="p">};</span>
+<span class="p">};</span>
+</pre></div>
+</div>
+<p>Object type is one of constants (enum):</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">PPNONE</span>
+<span class="n">PPNULL</span>
+<span class="n">PPBOOL</span>
+<span class="n">PPINT</span>
+<span class="n">PPNUM</span>
+<span class="n">PPNAME</span>
+<span class="n">PPSTRING</span>
+<span class="n">PPARRAY</span>
+<span class="n">PPDICT</span>
+<span class="n">PPSTREAM</span>
+<span class="n">PPREF</span>
+</pre></div>
+</div>
+<p>The type determines the structure member you’re allowed to access:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+<span class="o">...</span>
+<span class="n">switch</span> <span class="p">(</span><span class="n">obj</span><span class="o">-></span><span class="nb">type</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="n">case</span> <span class="n">PPNONE</span><span class="p">:</span> <span class="o">//</span> <span class="n">shouldn</span><span class="s1">'t actually happen, indicates some failure</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPNULL</span><span class="p">:</span> <span class="o">//</span> <span class="n">valid</span> <span class="n">PDF</span> <span class="n">null</span> <span class="nb">object</span><span class="p">,</span> <span class="n">no</span> <span class="n">value</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPBOOL</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">integer</span> <span class="p">(</span><span class="n">ppint</span><span class="p">),</span> <span class="n">value</span> <span class="mi">0</span> <span class="ow">or</span> <span class="mi">1</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPINT</span><span class="p">:</span>  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">integer</span> <span class="p">(</span><span class="n">ppint</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPNUM</span><span class="p">:</span>  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">number</span> <span class="p">(</span><span class="n">ppnum</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPNAME</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">name</span> <span class="p">(</span><span class="n">ppname</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPSTRING</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">string</span> <span class="p">(</span><span class="n">ppstring</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPARRAY</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">array</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPDICT</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="nb">dict</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPSTREAM</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">stream</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPREF</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">ref</span> <span class="p">(</span><span class="n">ppref</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>More often then not you know exactly what type of object value is expected, in which case
+you may use one of the following macros:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">//</span> <span class="n">returns</span> <span class="mi">1</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPNULL</span>
+<span class="nb">int</span> <span class="n">ppobj_get_null</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>         \
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPBOOL</span><span class="p">,</span> <span class="n">sets</span> <span class="nb">int</span> <span class="n">v</span> <span class="n">to</span> <span class="mi">0</span> <span class="ow">or</span> <span class="mi">1</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_bool</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPINT</span><span class="p">,</span> <span class="n">sets</span> <span class="n">ppint</span> <span class="n">v</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_int</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPINT</span> <span class="ow">and</span> <span class="o">>=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">sets</span> <span class="n">ppuint</span> <span class="n">v</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_uint</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPNUM</span> <span class="ow">or</span> <span class="n">PPINT</span><span class="p">,</span> <span class="n">sets</span> <span class="n">ppnum</span> <span class="n">v</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_num</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPNAME</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">name</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppname</span> <span class="o">*</span> <span class="n">ppobj_get_name</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPSTRING</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">string</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppstring</span> <span class="o">*</span> <span class="n">ppobj_get_string</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPARRAY</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">array</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">pparray</span> <span class="o">*</span> <span class="n">ppobj_get_array</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPDICT</span> <span class="n">returns</span> <span class="n">the</span> <span class="nb">dict</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppobj_get_dict</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPSTREAM</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">stream</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppstream</span> <span class="o">*</span> <span class="n">ppobj_get_stream</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPREF</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">reference</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppref</span> <span class="o">*</span> <span class="n">ppobj_get_ref</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>Note the coercion from integer to real number, but not reverse. In practise, whenever you expect a real number,
+you should also handle integer (eg. ‘1’ used instead of ‘1.0’ is pretty common in PDF).</p>
+<p>It is a common case that the object is given as an indirect reference, but what you actually
+want is not the reference, but the object referred by it. Here is a helper for it:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPREF</span><span class="p">,</span> <span class="n">returns</span> <span class="n">what</span> <span class="n">the</span> <span class="n">reference</span> <span class="n">points</span><span class="p">,</span> <span class="n">otherwise</span> <span class="n">returns</span> <span class="n">o</span>
+<span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppobj_rget_obj</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>Also every <code class="docutils literal notranslate"><span class="pre">ppobj_get_*</span></code> macro has <code class="docutils literal notranslate"><span class="pre">ppobj_rget_*</span></code> counterpart that makes a check
+for the expected type, but if the object is PPREF, it jumps to the target object.
+So for example <code class="docutils literal notranslate"><span class="pre">ppobj_rget_dict(obj)</span></code> will return dict if <code class="docutils literal notranslate"><span class="pre">obj</span></code> is of type PPDICT
+or if it is of type PPREF and <code class="docutils literal notranslate"><span class="pre">obj->ref</span></code> hosts an object of type PPDICT.</p>
+</div>
+<div class="section" id="names">
+<h2>Names<a class="headerlink" href="#names" title="Permalink to this headline">¶</a></h2>
+<p>PDF names are represented as <code class="docutils literal notranslate"><span class="pre">ppname</span></code> pointer (<code class="docutils literal notranslate"><span class="pre">ppname</span></code> used to be an alias to <code class="docutils literal notranslate"><span class="pre">char</span> <span class="pre">*</span></code>, now it is a structure).
+To access the name data:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppbyte</span> <span class="o">*</span> <span class="n">ppname_data</span><span class="p">(</span><span class="n">name</span><span class="p">)</span> <span class="o">//</span> <span class="n">name</span><span class="o">-></span><span class="n">data</span><span class="p">,</span> <span class="nb">bytes</span> <span class="n">array</span>
+</pre></div>
+</div>
+<p>For convenient use in C, names are <code class="docutils literal notranslate"><span class="pre">'\0'</span></code> terminated. But to get the length of name better always use
+<code class="docutils literal notranslate"><span class="pre">ppname_size()</span></code> macro. <code class="docutils literal notranslate"><span class="pre">ppname</span></code> object knows its size, don’t use <code class="docutils literal notranslate"><span class="pre">strlen()</span></code>:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppname_size</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">name</span><span class="o">-></span><span class="n">size</span><span class="p">,</span> <span class="n">the</span> <span class="n">length</span> <span class="n">of</span> <span class="n">name</span> <span class="ow">in</span> <span class="nb">bytes</span>
+</pre></div>
+</div>
+<p>In current implementation names are not hashed anyhow, so name-to-name comparison is not smarter than <code class="docutils literal notranslate"><span class="pre">memcmp()</span></code>.
+Use macros:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">ppname_is</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">,</span> <span class="s2">"literal"</span><span class="p">);</span>    <span class="o">//</span> <span class="n">to</span> <span class="n">compare</span> <span class="n">ppname</span> <span class="k">with</span> <span class="n">C</span><span class="o">-</span><span class="n">literal</span> <span class="n">string</span>
+<span class="nb">int</span> <span class="n">ppname_eq</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">,</span> <span class="n">ppname</span> <span class="n">other</span><span class="p">);</span> <span class="o">//</span> <span class="n">to</span> <span class="n">compare</span> <span class="n">ppname</span> <span class="k">with</span> <span class="n">a</span> <span class="n">different</span> <span class="n">name</span>
+</pre></div>
+</div>
+<p>If you use <code class="docutils literal notranslate"><span class="pre">pplib</span></code> to parse contents streams, you may need to distinguish names from operators
+(more precisely executable names). Names in PDF are preceeded by ‘/’, executable names aren’t. In both
+cases PDF parser will produce <code class="docutils literal notranslate"><span class="pre">ppname</span></code> but the result can be distingushed with:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">ppname_exec</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">non</span><span class="o">-</span><span class="n">zero</span> <span class="k">if</span> <span class="n">the</span> <span class="n">name</span> <span class="ow">is</span> <span class="n">executable</span>
+</pre></div>
+</div>
+<p>Names are kept in their raw form, with possible PDF specific escapes (in text below we call it <strong>encoded</strong> form).
+Leading ‘/’ is omitted. One may need a decoded name, with no PDF escapes.
+A pair of functions provides a simple interface to switch between those two forms:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">//</span> <span class="n">these</span> <span class="n">helpers</span> <span class="n">rely</span> <span class="n">on</span> <span class="n">name</span><span class="o">-></span><span class="n">alterego</span> <span class="n">member</span>
+<span class="n">ppname</span> <span class="o">*</span> <span class="n">ppname_decoded</span> <span class="p">(</span><span class="n">ppname</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">decoded</span> <span class="p">(</span><span class="n">unescaped</span><span class="p">)</span> <span class="n">form</span> <span class="n">of</span> <span class="n">the</span> <span class="n">name</span>
+<span class="n">ppname</span> <span class="o">*</span> <span class="n">ppname_encoded</span> <span class="p">(</span><span class="n">ppname</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">encoded</span> <span class="p">(</span><span class="n">escaped</span><span class="p">)</span> <span class="n">form</span> <span class="n">of</span> <span class="n">the</span> <span class="n">name</span>
+<span class="n">ppbyte</span> <span class="o">*</span> <span class="n">ppname_decoded_data</span> <span class="p">(</span><span class="n">ppname</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+<span class="n">ppbyte</span> <span class="o">*</span> <span class="n">ppname_encoded_data</span> <span class="p">(</span><span class="n">ppname</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>In pretty most cases a PDF name contains only letters (no special characters, no escapes), so decoded and encoded forms are identical.
+In that case both functions simply return the argument. It is ok to call <code class="docutils literal notranslate"><span class="pre">ppname_decoded()</span></code> on already decoded form
+and <code class="docutils literal notranslate"><span class="pre">ppname_encoded()</span></code> on already encoded form. Both forms are produced by PDF objects parser, so accessing <code class="docutils literal notranslate"><span class="pre">ppname</span></code> alter ego
+in whatever direction needs no extra decoding or allocation costs (the cost is paid by parser).</p>
+</div>
+<div class="section" id="string">
+<h2>String<a class="headerlink" href="#string" title="Permalink to this headline">¶</a></h2>
+<p>PDF strings have the same internal construction as names, so most of names description above applies to strings as well.
+<code class="docutils literal notranslate"><span class="pre">ppstring</span></code> is a structure (used to be an alias to <code class="docutils literal notranslate"><span class="pre">char</span> <span class="pre">*</span></code>). <code class="docutils literal notranslate"><span class="pre">string->data</span></code> is <code class="docutils literal notranslate"><span class="pre">\0</span></code>-terminated c-array of <code class="docutils literal notranslate"><span class="pre">ppbytes</span></code>.
+To get the data:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppbyte</span> <span class="o">*</span> <span class="n">ppstring_data</span><span class="p">(</span><span class="n">ppstring</span> <span class="o">*</span><span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">string</span><span class="o">-></span><span class="n">data</span><span class="p">,</span> <span class="n">macro</span>
+</pre></div>
+</div>
+<p>To get the size of the string:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppstring_size</span><span class="p">(</span><span class="n">ppstring</span> <span class="o">*</span><span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">length</span> <span class="n">of</span> <span class="n">the</span> <span class="n">string</span> <span class="ow">in</span> <span class="nb">bytes</span>
+</pre></div>
+</div>
+<p>Strings are provided in their raw form, preserving PDF specific escapes, but with no
+<code class="docutils literal notranslate"><span class="pre">()</span></code> or <code class="docutils literal notranslate"><span class="pre"><></span></code> delims. To distinguish plain strings from hex strings:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">ppstring_hex</span><span class="p">(</span><span class="n">ppstring</span> <span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">non</span> <span class="n">zero</span> <span class="k">if</span> <span class="nb">hex</span> <span class="n">string</span>
+</pre></div>
+</div>
+<p>Or if you prefer:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>switch (ppstring_type(string))
+{
+  case PPSTRING_PLAIN: // literal string, surrounded by ``(`` and ``)`` in PDF
+    break;
+  case PPSTRING_BASE16: // hex string, surrounded by ``<`` and ``>`` in PDF
+    break;
+  case PPSTRING_BASE85: // base85 string surrounded by ``<~`` and ``~>`` in PDF
+    break;
+}
+</pre></div>
+</div>
+<p>The last is actually Postscript specific, not used in PDF, but I think it might appear in contents streams…
+No matter how the string is given in PDF (plain or hex), here are two functions to
+switch between encoded and decoded strings forms:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstring</span> <span class="o">*</span> <span class="n">ppstring_decoded</span> <span class="p">(</span><span class="n">ppstring</span> <span class="o">*</span><span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">decoded</span> <span class="n">string</span> <span class="n">possibly</span> <span class="k">with</span> <span class="n">PDF</span> <span class="n">escapes</span>
+<span class="n">ppstring</span> <span class="o">*</span> <span class="n">ppstring_encoded</span> <span class="p">(</span><span class="n">ppstring</span> <span class="o">*</span><span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">encoded</span> <span class="n">string</span> <span class="k">with</span> <span class="n">no</span> <span class="n">PDF</span> <span class="n">escapes</span>
+<span class="n">ppbyte</span> <span class="o">*</span> <span class="n">ppstring_decoded_data</span> <span class="p">(</span><span class="n">ppstring</span> <span class="o">*</span><span class="n">string</span><span class="p">);</span>
+<span class="n">ppbyte</span> <span class="o">*</span> <span class="n">ppstring_encoded_data</span> <span class="p">(</span><span class="n">ppstring</span> <span class="o">*</span><span class="n">string</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>For hex strings, encoded form contains hex digits, while decoded form contains arbitrary bytes (the result of hex decoding).
+Plain strings usually contains printable ASCII characters, but they might contain any binary data.
+As with names, objects parser produces both forms. The raw form with PDF escapes (or raw hex form) the main one.
+Eg. when you access <code class="docutils literal notranslate"><span class="pre">obj->string</span></code> you always get the encoded form. At any moment you can switch to its alter ego.</p>
+<p>No matter if the string is plain or hex, if its first two bytes (decoded) are UTF16 BOM, the string is unicode.
+<code class="docutils literal notranslate"><span class="pre">ppstring</span></code> object <em>knows</em> it is unicode or not:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">switch</span> <span class="p">(</span><span class="n">ppstring_utf</span><span class="p">(</span><span class="n">string</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="n">case</span> <span class="n">PPSTRING_UTF16LE</span><span class="p">:</span> <span class="o">//</span> <span class="n">unicode</span> <span class="n">string</span><span class="p">,</span> <span class="n">utf16le</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPSTRING_UTF16BE</span><span class="p">:</span> <span class="o">//</span> <span class="n">unicode</span> <span class="n">string</span><span class="p">,</span> <span class="n">utf16be</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">default</span><span class="p">:</span>               <span class="o">//</span> <span class="n">no</span> <span class="n">unicode</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>Or simply:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span><span class="n">ppstring_utf</span><span class="p">(</span><span class="n">string</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
+  <span class="o">//</span> <span class="n">handle</span> <span class="n">unicode</span> <span class="n">string</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>If the string is unicode, BOM remains the part of the string  – <code class="docutils literal notranslate"><span class="pre">pplib</span></code> parser does not strip it.
+Unicode or not, encoded or decoded, strings are always C-arrays of bytes and <code class="docutils literal notranslate"><span class="pre">ppstring_size()</span></code>
+always returns the size in bytes.</p>
+</div>
+<div class="section" id="array">
+<h2>Array<a class="headerlink" href="#array" title="Permalink to this headline">¶</a></h2>
+<p>PDF arrays are represented as <code class="docutils literal notranslate"><span class="pre">pparray</span></code> type, which is C-array of <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> structures.
+To get the size:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">pparray_size</span><span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">number</span> <span class="n">of</span> <span class="n">array</span> <span class="n">items</span>
+</pre></div>
+</div>
+<p>To get <code class="docutils literal notranslate"><span class="pre">ppobj</span> <span class="pre">*</span></code> at a given index:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">pparray_at</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span>  <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">ppobj</span> <span class="o">*</span> <span class="p">(</span><span class="n">no</span> <span class="n">index</span> <span class="n">check</span><span class="p">)</span>
+<span class="n">ppobj</span> <span class="o">*</span> <span class="n">pparray_get</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">ppobj</span> <span class="o">*</span> <span class="ow">or</span> <span class="n">NULL</span> <span class="p">(</span><span class="k">with</span> <span class="n">index</span> <span class="n">check</span><span class="p">)</span>
+<span class="n">ppobj</span> <span class="o">*</span> <span class="n">pparray_get_obj</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>  <span class="o">//</span> <span class="n">function</span> <span class="n">equiv</span> <span class="n">to</span> <span class="n">pparray_get</span><span class="p">()</span>
+</pre></div>
+</div>
+<p>Iterating over array elements:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">;</span>
+<span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">size</span><span class="p">;</span>
+<span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+<span class="k">for</span> <span class="p">(</span><span class="n">size</span> <span class="o">=</span> <span class="n">pparray_size</span><span class="p">(</span><span class="n">array</span><span class="p">),</span> <span class="n">pparray_first</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">,</span> <span class="n">obj</span><span class="p">);</span> <span class="n">index</span> <span class="o"><</span> <span class="n">size</span><span class="p">;</span> <span class="n">pparray_next</span><span class="p">(</span><span class="n">index</span><span class="p">,</span> <span class="n">obj</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">index</span> <span class="ow">and</span> <span class="n">obj</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>There is no magic first/next macros, just iteration over pointers. One could also use something like:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="k">for</span> <span class="p">(</span><span class="n">index</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">size</span> <span class="o">=</span> <span class="n">array</span><span class="o">-></span><span class="n">size</span><span class="p">;</span> <span class="n">index</span> <span class="o"><</span> <span class="n">size</span><span class="p">;</span> <span class="o">++</span><span class="n">index</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="n">obj</span> <span class="o">=</span> <span class="n">pparray_at</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">);</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">index</span> <span class="ow">and</span> <span class="n">obj</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>When getting values from array and expecting a result of known type, use one of the following:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">pparray_get_bool</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="nb">int</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>    <span class="o">//</span> <span class="n">get</span> <span class="n">boolean</span> <span class="n">value</span>
+<span class="nb">int</span> <span class="n">pparray_get_int</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">ppint</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>   <span class="o">//</span> <span class="n">get</span> <span class="n">ppint</span> <span class="n">value</span>
+<span class="nb">int</span> <span class="n">pparray_get_uint</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">ppuint</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span> <span class="o">//</span> <span class="n">get</span> <span class="n">ppuint</span> <span class="n">value</span>
+<span class="nb">int</span> <span class="n">pparray_get_num</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">ppnum</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>   <span class="o">//</span> <span class="n">get</span> <span class="n">ppnum</span> <span class="n">value</span>
+<span class="n">ppname</span> <span class="o">*</span> <span class="n">pparray_get_name</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>       <span class="o">//</span> <span class="n">get</span> <span class="n">ppname</span> <span class="o">*</span> <span class="n">value</span>
+<span class="n">ppstring</span> <span class="o">*</span> <span class="n">pparray_get_string</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>   <span class="o">//</span> <span class="n">get</span> <span class="n">ppstring</span> <span class="o">*</span> <span class="n">value</span>
+<span class="n">pparray</span> <span class="o">*</span> <span class="n">pparray_get_array</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>     <span class="o">//</span> <span class="n">get</span> <span class="n">pparray</span> <span class="o">*</span> <span class="n">value</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">pparray_get_dict</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>       <span class="o">//</span> <span class="n">get</span> <span class="n">ppdict</span> <span class="o">*</span> <span class="n">value</span>
+<span class="n">ppref</span> <span class="o">*</span> <span class="n">pparray_get_ref</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>         <span class="o">//</span> <span class="n">get</span> <span class="n">ppref</span> <span class="o">*</span> <span class="n">value</span>
+</pre></div>
+</div>
+<p>As with <code class="docutils literal notranslate"><span class="pre">ppobj_get_*</span></code> suite, numeric types getters set the value of a given type and returns 1, if the type matches.
+Otherwise sets nothing and returns 0. Other getters return the value if the type matches, or NULL.</p>
+<p>Every function from <code class="docutils literal notranslate"><span class="pre">pparray_get_*</span></code> suite have its <code class="docutils literal notranslate"><span class="pre">pparray_rget_*</span></code> counterpart
+that dereferences indirect objects (as explained for <code class="docutils literal notranslate"><span class="pre">ppobj_rget_*</span></code> getters). Note that
+there is no <code class="docutils literal notranslate"><span class="pre">pparray_get_stream()</span></code> function, as streams in PDF are always indirect
+(may only reside in <code class="docutils literal notranslate"><span class="pre">ref->object.stream</span></code>). To get the stream from array use:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream</span> <span class="o">*</span> <span class="n">pparray_rget_stream</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="dict">
+<h2>Dict<a class="headerlink" href="#dict" title="Permalink to this headline">¶</a></h2>
+<p>PDF dicts are represented as <code class="docutils literal notranslate"><span class="pre">ppdict</span></code> structure, which is C-array of <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> with parallel
+C-array of <code class="docutils literal notranslate"><span class="pre">ppname</span></code> pointers. To get the size of a dict:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppdict_size</span><span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">number</span> <span class="n">of</span> <span class="n">key</span><span class="o">-</span><span class="n">val</span> <span class="n">pairs</span>
+</pre></div>
+</div>
+<p>To get the value at a given index (integer):</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppdict_at</span><span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">no</span> <span class="n">index</span> <span class="n">bounds</span> <span class="n">check</span>
+</pre></div>
+</div>
+<p>To get the name (key) at a given index:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppname</span> <span class="o">*</span> <span class="n">ppdict_key</span><span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">no</span> <span class="n">index</span> <span class="n">bounds</span> <span class="n">check</span>
+</pre></div>
+</div>
+<p>To iterate over dict key-val pairs:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+<span class="n">ppname</span> <span class="o">**</span><span class="n">pkey</span><span class="p">;</span>
+<span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+
+<span class="k">for</span> <span class="p">(</span><span class="n">ppdict_first</span><span class="p">(</span><span class="nb">dict</span><span class="p">,</span> <span class="n">pkey</span><span class="p">,</span> <span class="n">obj</span><span class="p">);</span> <span class="o">*</span><span class="n">pkey</span> <span class="o">!=</span> <span class="n">NULL</span><span class="p">;</span> <span class="n">ppdict_next</span><span class="p">(</span><span class="n">pkey</span><span class="p">,</span> <span class="n">obj</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="o">*</span><span class="n">pkey</span> <span class="ow">and</span> <span class="n">obj</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>There is no magic in first/next macros, just iteration through keys and values lists pointers.
+For convenient iteration, a list of keys is terminated with NULL, so in the code above <code class="docutils literal notranslate"><span class="pre">*pkey</span> <span class="pre">!=</span> <span class="pre">NULL</span></code>
+is used as the loop condition. One may also iterate via indices:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+<span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">size</span><span class="p">;</span>
+<span class="n">ppname</span> <span class="o">*</span><span class="n">key</span><span class="p">;</span>
+<span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+<span class="k">for</span> <span class="p">(</span><span class="n">index</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">size</span> <span class="o">=</span> <span class="n">ppdict_size</span><span class="p">(</span><span class="nb">dict</span><span class="p">);</span> <span class="n">index</span> <span class="o"><</span> <span class="n">size</span><span class="p">;</span> <span class="o">++</span><span class="n">index</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="n">key</span> <span class="o">=</span> <span class="n">ppdict_key</span><span class="p">(</span><span class="nb">dict</span><span class="p">,</span> <span class="n">index</span><span class="p">);</span>
+  <span class="n">obj</span> <span class="o">=</span> <span class="n">ppdict_at</span><span class="p">(</span><span class="nb">dict</span><span class="p">,</span> <span class="n">index</span><span class="p">);</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">key</span> <span class="ow">and</span> <span class="n">obj</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>To get the object associated with a given name, use one of the following:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppdict_get_obj</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+<span class="nb">int</span> <span class="n">ppdict_get_bool</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="nb">int</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>
+<span class="nb">int</span> <span class="n">ppdict_get_int</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">ppint</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>
+<span class="nb">int</span> <span class="n">ppdict_get_uint</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">ppuint</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>
+<span class="nb">int</span> <span class="n">ppdict_get_num</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">ppnum</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>
+<span class="n">ppname</span> <span class="n">ppdict_get_name</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+<span class="n">ppstring</span> <span class="n">ppdict_get_string</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+<span class="n">pparray</span> <span class="o">*</span> <span class="n">ppdict_get_array</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppdict_get_dict</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+<span class="n">ppref</span> <span class="o">*</span> <span class="n">ppdict_get_ref</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Note that all getters accepts <code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code> as key, so it is ok to say:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdict_rget_dict</span><span class="p">(</span><span class="nb">dict</span><span class="p">,</span> <span class="s2">"Resources"</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>(the most common use I guess). But to use <code class="docutils literal notranslate"><span class="pre">ppname</span></code> object as a key, one have to
+use data member:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdic_rget_dict</span><span class="p">(</span><span class="nb">dict</span><span class="p">,</span> <span class="n">name</span><span class="o">-></span><span class="n">data</span><span class="p">);</span> <span class="o">//</span> <span class="n">ppname</span> <span class="o">*</span><span class="n">name</span>
+</pre></div>
+</div>
+<p>Every <code class="docutils literal notranslate"><span class="pre">ppdict_get_*</span></code> getter has <code class="docutils literal notranslate"><span class="pre">ppdict_rget_*</span></code> counterpart that dereferences
+indirect objects if necessary. Note that there is no <code class="docutils literal notranslate"><span class="pre">ppdict_get_stream()</span></code> function,
+but there is:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream</span> <span class="o">*</span> <span class="n">ppdict_rget_stream</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>So far dicts comes with no names mapping, so by-name dict accessors perform a linear search
+through the keys list. PDF dicts are usually small.</p>
+</div>
+<div class="section" id="stream">
+<h2>Stream<a class="headerlink" href="#stream" title="Permalink to this headline">¶</a></h2>
+<p>PDF streams are represented as <code class="docutils literal notranslate"><span class="pre">ppstream</span></code> objects. To get the stream dict:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppstream_dict</span><span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span>
+</pre></div>
+</div>
+<p>To read the stream data:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">uint8_t</span> <span class="o">*</span> <span class="n">ppstream_first</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">size</span><span class="p">,</span> <span class="nb">int</span> <span class="n">decode</span><span class="p">);</span>
+<span class="n">uint8_t</span> <span class="o">*</span> <span class="n">ppstream_next</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">size</span><span class="p">);</span>
+<span class="n">void</span> <span class="n">ppstream_done</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Both <code class="docutils literal notranslate"><span class="pre">first`</span> <span class="pre">and</span> <span class="pre">``next</span></code> functions return a chunk of stream data and sets the <code class="docutils literal notranslate"><span class="pre">size</span></code> of the chunk.
+<code class="docutils literal notranslate"><span class="pre">decode</span></code> parameter tell the reader to decompress the stream (1) or return raw (0). A call to <code class="docutils literal notranslate"><span class="pre">ppstream_next()</span></code>
+must be preceeded by <code class="docutils literal notranslate"><span class="pre">ppstream_first()</span></code>. Once you’re done with the stream, you have to call <code class="docutils literal notranslate"><span class="pre">ppstream_done()</span></code>,
+no matter if the stream has been read to the end or not. The stream data iterator in use:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">uint8_t</span> <span class="o">*</span><span class="n">data</span><span class="p">;</span>
+<span class="n">size_t</span> <span class="n">size</span><span class="p">;</span>
+<span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">;</span>
+<span class="nb">int</span> <span class="n">decode</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span> <span class="o">//</span> <span class="mi">1</span> <span class="o">-</span> <span class="n">get</span> <span class="n">decompressed</span><span class="p">,</span> <span class="mi">0</span> <span class="o">-</span> <span class="n">get</span> <span class="n">raw</span>
+
+<span class="k">for</span> <span class="p">(</span><span class="n">data</span> <span class="o">=</span> <span class="n">ppstream_first</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="n">decode</span><span class="p">);</span> <span class="n">data</span> <span class="o">!=</span> <span class="n">NULL</span><span class="p">;</span> <span class="n">data</span> <span class="o">=</span> <span class="n">ppstream_next</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">data</span> <span class="ow">and</span> <span class="n">its</span> <span class="n">size</span>
+<span class="p">}</span>
+<span class="n">ppstream_done</span><span class="p">(</span><span class="n">stream</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Every subsequent iterator call invalidates the previous reader output, so you have to utilize the returned chunk
+of data just after you ot that. So the following is wrong:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">data1</span> <span class="o">=</span> <span class="n">ppstream_first</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
+<span class="n">data2</span> <span class="o">=</span> <span class="n">ppstream_next</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">);</span>
+<span class="n">data3</span> <span class="o">=</span> <span class="n">ppstream_next</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">);</span>
+<span class="n">some_output</span><span class="p">(</span><span class="n">data1</span><span class="p">,</span> <span class="n">size</span><span class="p">);</span>
+<span class="n">some_output</span><span class="p">(</span><span class="n">data2</span><span class="p">,</span> <span class="n">size</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The reader calls usually return the same pointer to internal buffer, just filled with a different data.
+<code class="docutils literal notranslate"><span class="pre">pplib</span></code> allocates reasonably large buffer and fills that buffer on subsequent calls to the reader.</p>
+<p>If the source stream has no compression, using both <code class="docutils literal notranslate"><span class="pre">decode</span> <span class="pre">==</span> <span class="pre">1</span></code> and <code class="docutils literal notranslate"><span class="pre">decode</span> <span class="pre">==</span> <span class="pre">0</span></code> should give the same result.
+You can check if the stream is actually compressed with:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream_compressed</span><span class="p">(</span><span class="n">stream</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">non</span> <span class="n">zero</span> <span class="k">if</span> <span class="o">/</span><span class="n">Filter</span> <span class="ow">is</span> <span class="n">present</span>
+</pre></div>
+</div>
+<p>It might be necessary to load the entire stream data at once:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">uint8_t</span> <span class="o">*</span> <span class="n">ppstream_all</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">size</span><span class="p">,</span> <span class="nb">int</span> <span class="n">decode</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>If the initial buffer size is insufficient, it grows until the entire stream data is loaded. You must call
+<code class="docutils literal notranslate"><span class="pre">ppstream_done(stream)</span></code> after using returned data.</p>
+<p><code class="docutils literal notranslate"><span class="pre">ppstream_done()</span></code> doesn’t invalidate the stream object, it just closes its internal reader.
+The stream itself remains a valid object (eg. one can read it again if necessary),
+but the reader buffer is released. It is actually not freed but kept for future the reuse with that on some other stream,
+but you still need to mark it ready for reuse to avoid allocating a separate buffer for every stream you’re going to read.</p>
+<p>Stream data readers will return <code class="docutils literal notranslate"><span class="pre">NULL</span></code> if you haven’t close the previous reader process  with <code class="docutils literal notranslate"><span class="pre">ppstream_done()</span></code>. All below is wrong:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">data1</span> <span class="o">=</span> <span class="n">ppstream_all</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
+<span class="n">data2</span> <span class="o">=</span> <span class="n">ppstream_all</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span> <span class="o">//</span> <span class="n">data2</span> <span class="o">==</span> <span class="n">NULL</span>
+<span class="o">//</span> <span class="ow">or</span>
+<span class="n">data1</span> <span class="o">=</span> <span class="n">ppstream_first</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
+<span class="n">data2</span> <span class="o">=</span> <span class="n">ppstream_first</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span> <span class="o">//</span> <span class="n">data2</span> <span class="o">==</span> <span class="n">NULL</span>
+<span class="o">//</span> <span class="ow">or</span>
+<span class="n">data1</span> <span class="o">=</span> <span class="n">ppstream_first</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
+<span class="n">data2</span> <span class="o">=</span> <span class="n">ppstream_all</span><span class="p">(</span><span class="n">stream</span><span class="p">,</span> <span class="o">&</span><span class="n">size</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span> <span class="o">//</span> <span class="n">data2</span> <span class="o">==</span> <span class="n">NULL</span>
+</pre></div>
+</div>
+<p>To avoid unnecessary dependencies, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> does not support image filters (<code class="docutils literal notranslate"><span class="pre">/DCT</span></code>, <code class="docutils literal notranslate"><span class="pre">/JPX</span></code>, <code class="docutils literal notranslate"><span class="pre">/JBIG</span></code>, <code class="docutils literal notranslate"><span class="pre">/CCITT</span></code>).
+But it is ok to read the stream with <code class="docutils literal notranslate"><span class="pre">decode</span></code> set to 1 on such streams. <code class="docutils literal notranslate"><span class="pre">pplib</span></code> assumes that the image is the
+final/target stream form and just returns it as-is. Eg. in the case of JPEG (<code class="docutils literal notranslate"><span class="pre">/DCT</span></code> filtered) image both calls should
+give the same results:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream_all</span><span class="p">(</span><span class="n">jpegstream</span><span class="p">,</span> <span class="o">&</span><span class="n">jpegsize</span><span class="p">,</span> <span class="mi">0</span><span class="p">);</span> <span class="o">//</span> <span class="n">don</span><span class="s1">'t decode, return what'</span><span class="n">s</span> <span class="n">there</span>
+<span class="n">ppstream_all</span><span class="p">(</span><span class="n">jpegstream</span><span class="p">,</span> <span class="o">&</span><span class="n">jpegsize</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span> <span class="o">//</span> <span class="n">decode</span> <span class="n">but</span> <span class="n">found</span> <span class="n">image</span> <span class="nb">filter</span><span class="p">,</span> <span class="n">effectively</span> <span class="n">the</span> <span class="n">same</span>
+</pre></div>
+</div>
+<p>A bit more about streams memory. As mentioned, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> allocates buffers for stream readers. After <code class="docutils literal notranslate"><span class="pre">ppstream_done()</span></code>,
+the stream no longer <em>owns</em> the buffer space. But the buffer may remain allocated, to be reused with future readers.
+<code class="docutils literal notranslate"><span class="pre">pplib</span></code> keeps a pool of several buffers. This means, that when you use stream readers, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> eats
+some memory (1MB or so) that is not freed, even if no streams are used. And even if you free all objects.
+If you suffer from this, you can optionally use a pair of functions:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">ppstream_init_buffers</span> <span class="p">(</span><span class="n">void</span><span class="p">);</span>
+<span class="n">void</span> <span class="n">ppstream_free_buffers</span> <span class="p">(</span><span class="n">void</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The first initializes buffers pool, unless done so far. Currently <code class="docutils literal notranslate"><span class="pre">pplib</span></code> cares of it before opening every stream reader,
+so it is not obligatory. The second frees a pool of buffers. The intended use is to call <code class="docutils literal notranslate"><span class="pre">ppstream_init_buffers()</span></code> once
+as kind of library initializer and to call <code class="docutils literal notranslate"><span class="pre">ppstream_free_buffers()</span></code> once, as the library finalizer.</p>
+</div>
+<div class="section" id="filters">
+<h2>Filters<a class="headerlink" href="#filters" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">ppstream</span></code> knows its filter(s) and keps it as <code class="docutils literal notranslate"><span class="pre">stream->filter</span></code>:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">//</span> <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">;</span>
+<span class="n">ppstream_filter</span> <span class="o">*</span><span class="n">info</span> <span class="o">=</span> <span class="o">&</span><span class="n">stream</span><span class="o">-></span><span class="nb">filter</span><span class="p">;</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">ppstream_filter</span></code> is the following structure:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">typedef</span> <span class="n">struct</span> <span class="p">{</span>
+  <span class="n">ppstreamtp</span> <span class="o">*</span><span class="n">filters</span><span class="p">;</span> <span class="o">//</span> <span class="n">c</span><span class="o">-</span><span class="n">array</span> <span class="n">of</span> <span class="nb">filter</span> <span class="n">identifiers</span> <span class="p">(</span><span class="n">enum</span> <span class="n">integers</span><span class="p">)</span>
+  <span class="n">ppdict</span> <span class="o">**</span><span class="n">params</span><span class="p">;</span>     <span class="o">//</span> <span class="n">c</span><span class="o">-</span><span class="n">array</span> <span class="n">of</span> <span class="n">ppdict</span> <span class="n">pointers</span>
+  <span class="n">size_t</span> <span class="n">count</span><span class="p">;</span>        <span class="o">//</span> <span class="n">number</span> <span class="n">of</span> <span class="n">filters</span><span class="p">,</span> <span class="n">length</span> <span class="n">of</span> <span class="n">the</span> <span class="n">arrays</span> <span class="p">(</span><span class="n">typically</span> <span class="mi">1</span><span class="p">)</span>
+<span class="p">}</span> <span class="n">ppstream_filter</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>If <code class="docutils literal notranslate"><span class="pre">count</span> <span class="pre">></span> <span class="pre">0</span></code> then <code class="docutils literal notranslate"><span class="pre">filters</span></code> member is not NULL. Filters array keeps integer constants:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">PPSTREAM_BASE16</span>    <span class="o">/*</span> <span class="o">/</span><span class="n">ASCIIHexDecode</span>  <span class="o">*/</span>
+<span class="n">PPSTREAM_BASE85</span>    <span class="o">/*</span> <span class="o">/</span><span class="n">ASCII85Decode</span>   <span class="o">*/</span>
+<span class="n">PPSTREAM_RUNLENGTH</span> <span class="o">/*</span> <span class="o">/</span><span class="n">RunLengthDecode</span> <span class="o">*/</span>
+<span class="n">PPSTREAM_FLATE</span>     <span class="o">/*</span> <span class="o">/</span><span class="n">FlateDecode</span>     <span class="o">*/</span>
+<span class="n">PPSTREAM_LZW</span>       <span class="o">/*</span> <span class="o">/</span><span class="n">LZWDecode</span>       <span class="o">*/</span>
+<span class="n">PPSTREAM_CCITT</span>     <span class="o">/*</span> <span class="o">/</span><span class="n">CCITTFaxDecode</span>  <span class="o">*/</span>
+<span class="n">PPSTREAM_DCT</span>       <span class="o">/*</span> <span class="o">/</span><span class="n">DCTDecode</span>       <span class="o">*/</span>
+<span class="n">PPSTREAM_JBIG2</span>     <span class="o">/*</span> <span class="o">/</span><span class="n">JBIG2Decode</span>     <span class="o">*/</span>
+<span class="n">PPSTREAM_JPX</span>       <span class="o">/*</span> <span class="o">/</span><span class="n">JPXDecode</span>       <span class="o">*/</span>
+<span class="n">PPSTREAM_CRYPT</span>     <span class="o">/*</span> <span class="o">/</span><span class="n">Crypt</span>           <span class="o">*/</span>
+</pre></div>
+</div>
+<p>Params array keeps corresponding filter parameters (<code class="docutils literal notranslate"><span class="pre">/DecodeParms</span></code>) if present. <code class="docutils literal notranslate"><span class="pre">params</span></code> member is not NULL
+if <code class="docutils literal notranslate"><span class="pre">count</span> <span class="pre">></span> <span class="pre">0</span></code> and the stream dict has <code class="docutils literal notranslate"><span class="pre">/DecodeParms</span></code> entry. Even if <code class="docutils literal notranslate"><span class="pre">params</span></code> is there,
+for every N-th filter, <code class="docutils literal notranslate"><span class="pre">params[N]</span></code> may be NULL (corresponding to PDF <code class="docutils literal notranslate"><span class="pre">null</span></code>).</p>
+<p><code class="docutils literal notranslate"><span class="pre">stream->filter</span></code> keeps the source stream filter information, which may not correspond to the result of stream readers
+(<code class="docutils literal notranslate"><span class="pre">ppstream_first()</span></code>, <code class="docutils literal notranslate"><span class="pre">ppstream_next()</span></code>, <code class="docutils literal notranslate"><span class="pre">ppstream_all()</span></code>). The get the filters info relevant to the result from readers:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">ppstream_filter_info</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">ppstream_filter</span> <span class="o">*</span><span class="n">info</span><span class="p">,</span> <span class="nb">int</span> <span class="n">decode</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The function fills <code class="docutils literal notranslate"><span class="pre">ppstream_filter</span></code> structure according to the expected result from stream readers (example 3 shows
+how to use it to reconstruct <code class="docutils literal notranslate"><span class="pre">/Filter</span></code> and <code class="docutils literal notranslate"><span class="pre">/DecodeParms</span></code> when copying the stream to some other PDF).</p>
+<p>To convert filter identifier (<code class="docutils literal notranslate"><span class="pre">ppstreamtp</span></code>) to a corresponding PDF filter name:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span> <span class="n">ppstream_filter_name</span><span class="p">[];</span>
+</pre></div>
+</div>
+<p>To covert <code class="docutils literal notranslate"><span class="pre">ppname</span></code> to filter identifier:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">ppstream_filter_type</span> <span class="p">(</span><span class="n">ppname</span> <span class="n">filtername</span><span class="p">,</span> <span class="n">ppstreamtp</span> <span class="o">*</span><span class="n">filtertype</span><span class="p">);</span>
+<span class="o">//</span> <span class="n">returns</span> <span class="mi">1</span> <span class="ow">and</span> <span class="n">sets</span> <span class="n">filtertype</span> <span class="k">if</span> <span class="n">filtername</span> <span class="ow">is</span> <span class="n">the</span> <span class="n">proper</span> <span class="nb">filter</span> <span class="n">name</span>
+</pre></div>
+</div>
+<p>Additional information about the stream can be fetched from macros:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream_compressed</span><span class="p">(</span><span class="n">stream</span><span class="p">)</span> <span class="o">/*</span> <span class="n">stream</span><span class="o">-></span><span class="n">flags</span> <span class="o">&</span> <span class="p">(</span><span class="n">PPSTREAM_FILTER</span><span class="o">|</span><span class="n">PPSTREAM_IMAGE</span><span class="p">)</span> <span class="o">*/</span>
+<span class="n">ppstream_filtered</span><span class="p">(</span><span class="n">stream</span><span class="p">)</span>   <span class="o">/*</span> <span class="n">stream</span><span class="o">-></span><span class="n">flags</span> <span class="o">&</span> <span class="n">PPSTREAM_FILTER</span> <span class="o">*/</span>
+<span class="n">ppstream_image</span><span class="p">(</span><span class="n">stream</span><span class="p">)</span>      <span class="o">/*</span> <span class="n">stream</span><span class="o">-></span><span class="n">flags</span> <span class="o">*</span> <span class="n">PPSTREAM_IMAGE</span> <span class="o">*/</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">stream->flags</span></code> is a binary sum of the following:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">PPSTREAM_FILTER</span>        <span class="o">/*</span> <span class="nb">set</span> <span class="n">iff</span> <span class="n">the</span> <span class="n">stream</span> <span class="n">filters</span> <span class="nb">list</span> <span class="n">has</span> <span class="n">one</span> <span class="n">of</span><span class="p">:</span> <span class="n">BASE16</span><span class="p">,</span> <span class="n">BASE85</span><span class="p">,</span> <span class="n">RUNLENGTH</span><span class="p">,</span> <span class="n">FLATE</span><span class="p">,</span> <span class="n">LZW</span> <span class="o">*/</span>
+<span class="n">PPSTREAM_IMAGE</span>         <span class="o">/*</span> <span class="nb">set</span> <span class="n">iff</span> <span class="n">the</span> <span class="n">stream</span> <span class="n">filters</span> <span class="nb">list</span> <span class="n">has</span> <span class="n">one</span> <span class="n">of</span><span class="p">:</span> <span class="n">CCITT</span><span class="p">,</span> <span class="n">DCT</span><span class="p">,</span> <span class="n">JBIG2</span><span class="p">,</span> <span class="n">JPX</span> <span class="o">*/</span>
+<span class="n">PPSTREAM_ENCRYPTED</span>     <span class="o">/*</span> <span class="nb">set</span> <span class="n">iff</span> <span class="n">the</span> <span class="n">stream</span> <span class="ow">is</span> <span class="n">encrypted</span> <span class="o">*/</span>
+<span class="n">PPSTREAM_ENCRYPTED_OWN</span> <span class="o">/*</span> <span class="nb">set</span> <span class="n">iff</span> <span class="n">the</span> <span class="n">stream</span> <span class="n">has</span> <span class="n">own</span> <span class="n">CRYPT</span> <span class="nb">filter</span> <span class="o">*/</span>
+</pre></div>
+</div>
+<p>Note that <code class="docutils literal notranslate"><span class="pre">PPSTREAM_COMPRESSED</span></code> is not there any longer, use <code class="docutils literal notranslate"><span class="pre">ppstream_compressed()</span></code> instead.
+And there is some more, see <code class="docutils literal notranslate"><span class="pre">ppapi.h</span></code>.</p>
+</div>
+<div class="section" id="ref">
+<h2>Ref<a class="headerlink" href="#ref" title="Permalink to this headline">¶</a></h2>
+<p>Indirect objects are represented as <code class="docutils literal notranslate"><span class="pre">ppref</span></code> structure. To get the object that the
+reference refers to:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppref_obj</span><span class="p">(</span><span class="n">ppref</span> <span class="o">*</span><span class="n">ref</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">ppref</span></code> structure also keeps the reference number and version, a pointer to cross reference table it belongs
+to and others, but I guess you won’t need anything but the referenced object. <code class="docutils literal notranslate"><span class="pre">pplib</span></code> parser resolves references
+on-fly. So if there is a dict with indirect objects:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o"><<</span>
+  <span class="o">/</span><span class="n">Type</span> <span class="o">/</span><span class="n">Page</span>
+  <span class="o">/</span><span class="n">Resources</span> <span class="mi">123</span> <span class="mi">0</span> <span class="n">R</span>
+  <span class="o">...</span>
+<span class="o">>></span>
+</pre></div>
+</div>
+<p>the parser will produce <code class="docutils literal notranslate"><span class="pre">ppdict</span></code> with <code class="docutils literal notranslate"><span class="pre">Resources</span></code> key pointing the proper <code class="docutils literal notranslate"><span class="pre">ppref</span> <span class="pre">*</span></code> value.
+If you need more, access <code class="docutils literal notranslate"><span class="pre">ppref</span></code> members:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">struct</span> <span class="n">ppref</span> <span class="p">{</span>
+  <span class="n">ppobj</span> <span class="nb">object</span><span class="p">;</span>           <span class="o">//</span> <span class="n">target</span> <span class="nb">object</span>
+  <span class="n">ppuint</span> <span class="n">number</span><span class="p">,</span> <span class="n">version</span><span class="p">;</span> <span class="o">//</span> <span class="n">identifiers</span>
+  <span class="n">size_t</span> <span class="n">offset</span><span class="p">;</span>          <span class="o">//</span> <span class="n">file</span> <span class="n">offset</span> <span class="p">(</span><span class="n">useless</span> <span class="k">for</span> <span class="n">you</span><span class="p">,</span> <span class="n">may</span> <span class="n">be</span> <span class="n">zero</span> <span class="k">for</span> <span class="n">compressed</span> <span class="n">objects</span><span class="p">)</span>
+  <span class="n">ppuint</span> <span class="n">length</span><span class="p">;</span>          <span class="o">//</span> <span class="n">the</span> <span class="n">length</span> <span class="n">of</span> <span class="n">the</span> <span class="n">original</span> <span class="nb">object</span> <span class="n">data</span>
+  <span class="n">ppxref</span> <span class="o">*</span><span class="n">xref</span><span class="p">;</span>           <span class="o">//</span> <span class="n">cross</span> <span class="n">reference</span> <span class="n">table</span> <span class="n">it</span> <span class="n">belongs</span> <span class="n">to</span>
+<span class="p">};</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="xref">
+<h2>XRef<a class="headerlink" href="#xref" title="Permalink to this headline">¶</a></h2>
+<p>Cross reference table is exposed as <code class="docutils literal notranslate"><span class="pre">ppxref</span></code> (incomplete type, you can only oprate on its pointer).
+To get top document xref:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppxref</span> <span class="o">*</span> <span class="n">ppdoc_xref</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To get previous (older) xref:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppxref</span> <span class="o">*</span> <span class="n">ppxref_prev</span> <span class="p">(</span><span class="n">ppxref</span> <span class="o">*</span><span class="n">xref</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To find an object of a given refnumber:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppref</span> <span class="o">*</span> <span class="n">ppxref_find</span> <span class="p">(</span><span class="n">ppxref</span> <span class="o">*</span><span class="n">xref</span><span class="p">,</span> <span class="n">ppuint</span> <span class="n">refnumber</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>[Note: since pplib v0.98 in case of documents with incremental update, <code class="docutils literal notranslate"><span class="pre">ppxref_find()</span></code> returns
+the newest available version of a given object rather than the object in a given body.]</p>
+</div>
+<div class="section" id="pdf">
+<h2>PDF<a class="headerlink" href="#pdf" title="Permalink to this headline">¶</a></h2>
+<p>PDF document is represented as <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> structure (incomplete type, you can only operate on its pointer).
+To load a document from file:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdoc</span> <span class="o">*</span> <span class="n">ppdoc_load</span> <span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">filename</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To load a document from file handle:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdoc</span> <span class="o">*</span> <span class="n">ppdoc_filehandle</span> <span class="p">(</span><span class="n">FILE</span> <span class="o">*</span><span class="n">file</span><span class="p">,</span> <span class="nb">int</span> <span class="n">closefile</span><span class="p">);</span> <span class="o">//</span> <span class="n">closefile</span> <span class="mi">1</span> <span class="n">to</span> <span class="n">fclose</span><span class="p">()</span> <span class="n">on</span> <span class="n">end</span>
+</pre></div>
+</div>
+<p>To load a document from memory data:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdoc</span> <span class="o">*</span> <span class="n">ppdoc_mem</span> <span class="p">(</span><span class="n">const</span> <span class="n">void</span> <span class="o">*</span><span class="n">data</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">size</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The data is assumed to be a buffer allocated with <code class="docutils literal notranslate"><span class="pre">malloc</span></code> - it is freed when destroying <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code>.</p>
+<p>Both loaders returns <code class="docutils literal notranslate"><span class="pre">NULL</span></code> on failure.</p>
+<p>To free <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> and all objects it refers to:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">ppdoc_free</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>So far we haven’t mention about any explicit object reclaimers. There are no dedicated <code class="docutils literal notranslate"><span class="pre">free</span></code> functions
+for other objects. You don’t allocate or free objects yourself. <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> object is an owner of all
+beings it refers to. It also means that every object described so far is alive as long as the containing
+<code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> is alive.</p>
+<p>To access main PDF dicts:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppdoc_trailer</span><span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">top</span> <span class="n">xref</span> <span class="n">trailer</span> <span class="nb">dict</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppdoc_catalog</span><span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">catalog</span> <span class="n">referred</span> <span class="kn">from</span> <span class="nn">the</span> <span class="n">trailer</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppdoc_info</span><span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>    <span class="o">//</span> <span class="n">returns</span> <span class="n">info</span> <span class="nb">dict</span> <span class="n">referred</span> <span class="kn">from</span> <span class="nn">the</span> <span class="n">trailer</span>
+</pre></div>
+</div>
+<p>To get the PDF version:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span> <span class="n">ppdoc_version_string</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>    <span class="o">//</span> <span class="n">version</span> <span class="n">string</span>
+<span class="nb">int</span> <span class="n">ppdoc_version_number</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">,</span> <span class="nb">int</span> <span class="o">*</span><span class="n">minor</span><span class="p">);</span> <span class="o">//</span> <span class="n">minor</span> <span class="ow">and</span> <span class="n">major</span> <span class="n">numbers</span>
+</pre></div>
+</div>
+<p>To get the file size of the source PDF document:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppdoc_file_size</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To get the number of objects in all xrefs:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppuint</span> <span class="n">ppdoc_objects</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To get the approx usage of memory:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppdoc_memory</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">waste</span><span class="p">);</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="encryption">
+<h2>Encryption<a class="headerlink" href="#encryption" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> handles encrypted (password protected) documents. If a document is encrypted, most of strings and streams are ciphered.
+In that form they are unreadable and rather useless, you can’t even rewrite such strings/streams as-is to a different PDF output.
+It is a common practise to <em>protect</em> documents with an empty password. Such documents remain readable in Acrobat (just opens them without prompting
+for a password), but some features (eg. printing) may restricted by the application.</p>
+<p>When <code class="docutils literal notranslate"><span class="pre">pplib</span></code> detects encryption, it follows Acrobat approach and first tries an empty password. If it succeeds, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> proceeeds normally, providing
+an access to decrypted strings and streams, as if they weren’t ciphered. If the document is protected with non-empty password, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> gives
+a way to provide a password and proceed. Until you provide a password, <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> object returned by <code class="docutils literal notranslate"><span class="pre">ppdoc_load()</span></code> function has all object wntries
+set to <code class="docutils literal notranslate"><span class="pre">null</span></code>.</p>
+<p>After loading a document you should check encryption status with:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppcrypt_status</span> <span class="n">ppdoc_crypt_status</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">ppcrypt_status</span></code> (integer) may have the following values:</p>
+<blockquote>
+<div><code class="docutils literal notranslate"><span class="pre">PPCRYPT_NONE</span></code> - no encryption, go ahead
+<code class="docutils literal notranslate"><span class="pre">PPCRYPT_DONE</span></code> - encryption present but password succeeded, go ahead
+<code class="docutils literal notranslate"><span class="pre">PPCRYPT_PASS</span></code> - encryption present, need non-empty password
+<code class="docutils literal notranslate"><span class="pre">PPCRYPT_FAIL</span></code> - invalid or unsupported encryption (eg. undocumented in pdf spec)</div></blockquote>
+<p>If a password is needed, you can provide one with:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppcrypt_status</span> <span class="n">ppdoc_crypt_pass</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">,</span> <span class="n">const</span> <span class="n">void</span> <span class="o">*</span><span class="n">userpass</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">userpasslength</span><span class="p">,</span>
+                                             <span class="n">const</span> <span class="n">void</span> <span class="o">*</span><span class="n">ownerpass</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">ownerpasslength</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Well, yes, there are actually two passwords in encrypted documents. Relation between them is obscure to me, but enough
+to know that having one of them is enough to decrypt the document. If you know the password, you probably mean
+<code class="docutils literal notranslate"><span class="pre">userpass</span></code>, in which case you should put <code class="docutils literal notranslate"><span class="pre">NULL</span></code> as <code class="docutils literal notranslate"><span class="pre">ownerpass</span></code>. The function returns <code class="docutils literal notranslate"><span class="pre">PPCRYPT_DONE</span></code> if the password
+succeeds and the previous status otherwise. Your custom loader function may look like that:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">;</span>
+<span class="n">pdf</span> <span class="o">=</span> <span class="n">ppdoc_load</span><span class="p">(</span><span class="s2">"file.pdf"</span><span class="p">);</span>
+<span class="k">if</span> <span class="p">(</span><span class="n">pdf</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">)</span>
+  <span class="k">return</span> <span class="n">NULL</span><span class="p">;</span>
+<span class="n">switch</span> <span class="p">(</span><span class="n">ppdoc_crypt_status</span><span class="p">(</span><span class="n">pdf</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="n">case</span> <span class="n">PPCRYPT_NONE</span><span class="p">:</span>
+  <span class="n">case</span> <span class="n">PPCRYPT_DONE</span><span class="p">:</span>
+    <span class="k">return</span> <span class="n">pdf</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPCRYPT_PASS</span><span class="p">:</span>
+    <span class="k">if</span> <span class="p">(</span><span class="n">ppdoc_crypt_pass</span><span class="p">(</span><span class="n">pdf</span><span class="p">,</span> <span class="s2">"dummy"</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="n">NULL</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">==</span> <span class="n">PPCRYPT_DONE</span> <span class="o">||</span>
+        <span class="n">ppdoc_crypt_pass</span><span class="p">(</span><span class="n">pdf</span><span class="p">,</span> <span class="n">NULL</span><span class="p">,</span> <span class="mi">0</span><span class="p">,</span> <span class="s2">"dummy"</span><span class="p">,</span> <span class="mi">5</span><span class="p">)</span> <span class="o">==</span> <span class="n">PPCRYPT_DONE</span><span class="p">)</span>
+      <span class="k">return</span> <span class="n">pdf</span><span class="p">;</span>
+    <span class="n">printf</span><span class="p">(</span><span class="s2">"sorry, password needed</span><span class="se">\n</span><span class="s2">"</span><span class="p">);</span>
+    <span class="n">ppdoc_free</span><span class="p">(</span><span class="n">pdf</span><span class="p">);</span>
+    <span class="k">return</span> <span class="n">NULL</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPCRYPT_FAIL</span><span class="p">:</span>
+    <span class="n">printf</span><span class="p">(</span><span class="s2">"sorry, encryption failed</span><span class="se">\n</span><span class="s2">"</span><span class="p">);</span>
+    <span class="n">ppdoc_free</span><span class="p">(</span><span class="n">pdf</span><span class="p">);</span>
+    <span class="k">return</span> <span class="n">NULL</span><span class="p">;</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>[If you get <code class="docutils literal notranslate"><span class="pre">PPCRYPT_FAIL</span></code> it might mean <em>I failed</em>, so treat as a bug.]</p>
+<p>If you’d like to know what permissions are given/restricted to encrypted document:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppint</span> <span class="n">ppdoc_permissions</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Returned value can be queried with the following binary flags (you can verify with Acrobat <em>File -> Properties -> Security</em> tab):</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">PPDOC_ALLOW_PRINT</span>       <span class="o">//</span> <span class="n">printing</span>
+<span class="n">PPDOC_ALLOW_MODIFY</span>      <span class="o">//</span> <span class="n">filling</span> <span class="n">form</span> <span class="n">fields</span><span class="p">,</span> <span class="n">signing</span><span class="p">,</span> <span class="n">creating</span> <span class="n">template</span> <span class="n">pages</span>
+<span class="n">PPDOC_ALLOW_COPY</span>        <span class="o">//</span> <span class="n">copying</span><span class="p">,</span> <span class="n">copying</span> <span class="k">for</span> <span class="n">accessibility</span>
+<span class="n">PPDOC_ALLOW_ANNOTS</span>      <span class="o">//</span> <span class="n">filling</span> <span class="n">form</span> <span class="n">fields</span><span class="p">,</span> <span class="n">copying</span><span class="p">,</span> <span class="n">signing</span>
+<span class="n">PPDOC_ALLOW_EXTRACT</span>     <span class="o">//</span> <span class="n">contents</span> <span class="n">copying</span> <span class="k">for</span> <span class="n">accessibility</span>
+<span class="n">PPDOC_ALLOW_ASSEMBLY</span>    <span class="o">//</span> <span class="p">(</span><span class="n">no</span> <span class="n">effect</span><span class="p">)</span>
+<span class="n">PPDOC_ALLOW_PRINT_HIRES</span> <span class="o">//</span> <span class="p">(</span><span class="n">no</span> <span class="n">effect</span><span class="p">)</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> does absolutelly nothing with permissions, it cares only to decrypt the document. As mentioned, encryption applies to strings
+and streams. <code class="docutils literal notranslate"><span class="pre">pplib</span></code> decrypt strings when parsing document objects, so the result you get is <em>normal</em> (not ciphered).
+Streams are decrypted whenever you access them. Even if you ask for a raw stream data, you’ll get a raw (compressed) stream, but decrypted.
+So except the check to <code class="docutils literal notranslate"><span class="pre">ppdoc_crypt_status()</span></code>, you shouldn’t bother about encryption.</p>
+<p>In encrypted documents most of streams are encrypted. To check if a given stream is encrypted:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream_encrypted</span><span class="p">(</span><span class="n">stream</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">non</span><span class="o">-</span><span class="n">zero</span> <span class="k">if</span> <span class="n">encrypted</span>
+</pre></div>
+</div>
+<p>Encryption is independent from compression, don’t confuse with <code class="docutils literal notranslate"><span class="pre">ppstream_compressed()</span></code></p>
+</div>
+<div class="section" id="pages">
+<h2>Pages<a class="headerlink" href="#pages" title="Permalink to this headline">¶</a></h2>
+<p>Several helpers to deal with pages. To get the number of pages:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppuint</span> <span class="n">ppdoc_page_count</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To access the root pages tree node:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppref</span> <span class="o">*</span> <span class="n">ppdoc_pages</span><span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>To get the page reference at a given index:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppref</span> <span class="o">*</span> <span class="n">ppdoc_page</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">,</span> <span class="n">ppuint</span> <span class="n">index</span><span class="p">);</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">index</span></code> is a page number. First page has number 1. For index out of bounds <code class="docutils literal notranslate"><span class="pre">ppdoc_page()</span></code> returns NULL.
+Iterating over pages using index from 1 to <code class="docutils literal notranslate"><span class="pre">ppdoc_page_count()</span></code> and calling <code class="docutils literal notranslate"><span class="pre">ppdoc_page()</span></code> on each iteration
+would be suboptimal. Here is a dedicted iterator for this:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppref</span> <span class="o">*</span>  <span class="n">ppdoc_first_page</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+<span class="n">ppref</span> <span class="o">*</span> <span class="n">ppdoc_next_page</span> <span class="p">(</span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>The iterator in use:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">;</span>
+<span class="n">ppref</span> <span class="o">*</span><span class="n">ref</span><span class="p">;</span>
+<span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+<span class="nb">int</span> <span class="n">pageno</span><span class="p">;</span>
+
+<span class="n">pdf</span> <span class="o">=</span> <span class="n">ppdoc_load</span><span class="p">(</span><span class="s2">"file.pdf"</span><span class="p">);</span>
+<span class="k">for</span> <span class="p">(</span><span class="n">ref</span> <span class="o">=</span> <span class="n">ppdoc_first_page</span><span class="p">(</span><span class="n">pdf</span><span class="p">),</span> <span class="n">pageno</span> <span class="o">=</span> <span class="mi">1</span><span class="p">;</span> <span class="n">ref</span> <span class="o">!=</span> <span class="n">NULL</span><span class="p">;</span> <span class="n">ref</span> <span class="o">=</span> <span class="n">ppdoc_next_page</span><span class="p">(</span><span class="n">pdf</span><span class="p">),</span> <span class="o">++</span><span class="n">pageno</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="nb">dict</span> <span class="o">=</span> <span class="n">ppref_obj</span><span class="p">(</span><span class="n">obj</span><span class="p">)</span><span class="o">-></span><span class="nb">dict</span><span class="p">;</span> <span class="o">//</span> <span class="n">take</span> <span class="k">for</span> <span class="n">granted</span> <span class="n">it</span> <span class="ow">is</span> <span class="n">a</span> <span class="nb">dict</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">the</span> <span class="n">page</span> <span class="nb">dict</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>Functions related to pages return <code class="docutils literal notranslate"><span class="pre">ppref</span> <span class="pre">*</span></code> ensured to contain dict object, so you don’t need sanity
+type checks here.</p>
+</div>
+<div class="section" id="contents">
+<h2>Contents<a class="headerlink" href="#contents" title="Permalink to this headline">¶</a></h2>
+<p>PDF page contents can be given as a stream or array of streams. Here is a convenience iterator over page
+contents streams:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream</span> <span class="o">*</span> <span class="n">ppcontents_first</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">);</span>
+<span class="n">ppstream</span> <span class="o">*</span> <span class="n">ppcontents_next</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>A complete example of contents stream parser use is given below (example 2).
+But before we get there, we need to introduce <code class="docutils literal notranslate"><span class="pre">ppcontext</span></code> object. Conceptually,
+<code class="docutils literal notranslate"><span class="pre">ppcontext</span></code> is an owner (memory handler) of objects created on demand (beyond the <code class="docutils literal notranslate"><span class="pre">ppdoc</span></code>).
+So far used only with contents stream parser, which might produce quite some data that we want
+to release just after used. To create a new context:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pcontext</span> <span class="o">*</span> <span class="n">ppcontext_new</span> <span class="p">(</span><span class="n">void</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>It initializes a new context and its internal memory heap, taking about 64kB on start. After that,
+the context is ready to produce objects (contents parsing functions below). Once objects produced
+from a given context are no longer needed:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">ppcontext_done</span> <span class="p">(</span><span class="n">ppcontext</span> <span class="o">*</span><span class="n">context</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>It restores the context to its initial state, as after <code class="docutils literal notranslate"><span class="pre">ppcontext_new()</span></code>. It means that the context
+is ready to produce another bunch of beings (in the example below, all objects from the next page contents).
+Once the context is not needed anymore:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">ppcontext_free</span> <span class="p">(</span><span class="n">ppcontext</span> <span class="o">*</span><span class="n">context</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Now, contents stream parser functions take the context as an argument. Iterator form of contents stream parser
+that allows to process the contents operator by operator:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppcontents_first_op</span> <span class="p">(</span><span class="n">ppcontext</span> <span class="o">*</span><span class="n">context</span><span class="p">,</span> <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">psize</span><span class="p">,</span> <span class="n">ppname</span> <span class="o">*</span><span class="n">pname</span><span class="p">);</span>
+<span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppcontents_next_op</span> <span class="p">(</span><span class="n">ppcontext</span> <span class="o">*</span><span class="n">context</span><span class="p">,</span> <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">psize</span><span class="p">,</span> <span class="n">ppname</span> <span class="o">*</span><span class="n">pname</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Returned <code class="docutils literal notranslate"><span class="pre">ppobj</span> <span class="pre">*</span></code> is a pointer to operands list. <code class="docutils literal notranslate"><span class="pre">*psize</span></code> is the number of operands on stack.
+The operator itself is stored as <code class="docutils literal notranslate"><span class="pre">*pname</span></code>.</p>
+<p>To parse the entire contents stream at once with no stop at every operator:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppcontents_parse</span> <span class="p">(</span><span class="n">ppcontext</span> <span class="o">*</span><span class="n">context</span><span class="p">,</span> <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">,</span> <span class="n">size_t</span> <span class="o">*</span><span class="n">psize</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>Returns probably quite long list of all parsed objects (operands and operatos) in one piece.
+The number of objects is stored to <code class="docutils literal notranslate"><span class="pre">*psize</span></code>.</p>
+<p>[Contents may contain so called inline images, that breaks a simple scheme of operands / operator syntax:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">BI</span> <span class="o"><</span><span class="n">keyval</span> <span class="n">pairs</span><span class="o">></span> <span class="n">ID</span> <span class="o"><</span><span class="n">binary</span> <span class="n">image</span> <span class="n">data</span><span class="o">></span> <span class="n">EI</span>
+</pre></div>
+</div>
+<p>Contents parser treats this genuine triplet as a single piece, producing two operands (dict and string)
+followed by <code class="docutils literal notranslate"><span class="pre">EI</span></code> operator name.]</p>
+</div>
+<div class="section" id="boxes">
+<h2>Boxes<a class="headerlink" href="#boxes" title="Permalink to this headline">¶</a></h2>
+<p>Boxes (rectangles) in PDF are roughly 4-number arrays, but with a special intent.
+<code class="docutils literal notranslate"><span class="pre">pplib</span></code> provides a basic interface for these special arrays:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">typedef</span> <span class="n">struct</span> <span class="p">{</span>
+  <span class="n">ppnum</span> <span class="n">lx</span><span class="p">,</span> <span class="n">ly</span><span class="p">,</span> <span class="n">rx</span><span class="p">,</span> <span class="n">ry</span><span class="p">;</span>
+<span class="p">}</span> <span class="n">pprect</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>This type is used only by helper functions - PDF parser is not aware of the rectangle type.
+To convert <code class="docutils literal notranslate"><span class="pre">pparray</span></code> to <code class="docutils literal notranslate"><span class="pre">pprect</span></code>:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pprect</span> <span class="o">*</span> <span class="n">pparray_to_rect</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">pprect</span> <span class="o">*</span><span class="n">rect</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">rect</span> <span class="ow">or</span> <span class="n">NULL</span>
+</pre></div>
+</div>
+<p>In example:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pprect</span> <span class="n">rect</span><span class="p">;</span>
+<span class="k">if</span> <span class="p">(</span><span class="n">pparray_to_rect</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="o">&</span><span class="n">rect</span><span class="p">)</span> <span class="o">!=</span> <span class="n">NULL</span><span class="p">)</span>
+ <span class="p">;</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">rect</span>
+</pre></div>
+</div>
+<p>To get some image bounding box:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pprect</span> <span class="o">*</span> <span class="n">ppdict_get_rect</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">pprect</span> <span class="o">*</span><span class="n">rect</span><span class="p">);</span>
+<span class="o">//</span> <span class="n">eg</span><span class="o">.</span> <span class="n">ppdict_get_rect</span><span class="p">(</span><span class="n">imagedict</span><span class="p">,</span> <span class="s2">"BBox"</span><span class="p">,</span> <span class="o">&</span><span class="n">rect</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>To get some page box:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pprect</span> <span class="o">*</span> <span class="n">ppdict_get_box</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">pprect</span> <span class="o">*</span><span class="n">rect</span><span class="p">);</span>
+<span class="o">//</span> <span class="n">eg</span><span class="o">.</span> <span class="n">ppdict_get_box</span><span class="p">(</span><span class="n">pagedict</span><span class="p">,</span> <span class="s2">"MediaBox"</span><span class="p">,</span> <span class="o">&</span><span class="n">rect</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>The later not only checks the pagedict, but also goes through parent page nodes.</p>
+</div>
+<div class="section" id="transforms">
+<h2>Transforms<a class="headerlink" href="#transforms" title="Permalink to this headline">¶</a></h2>
+<p>Transformations are given as 6-number arrays, but with a special intent.
+<code class="docutils literal notranslate"><span class="pre">pplib</span></code> provides a basic interface for these special arrays:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">typedef</span> <span class="n">struct</span> <span class="p">{</span>
+  <span class="n">ppnum</span> <span class="n">xx</span><span class="p">,</span> <span class="n">xy</span><span class="p">,</span> <span class="n">yx</span><span class="p">,</span> <span class="n">yy</span><span class="p">,</span> <span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">;</span>
+<span class="p">}</span> <span class="n">ppmatrix</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>This type is used only by helper functions - PDF parser is not aware of the matrix type.
+To convert <code class="docutils literal notranslate"><span class="pre">pparray</span></code> to <code class="docutils literal notranslate"><span class="pre">ppmatrix</span></code>:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppmatrix</span> <span class="o">*</span> <span class="n">pparray_to_matrix</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">ppmatrix</span> <span class="o">*</span><span class="n">matrix</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>In example:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppmatrix</span> <span class="n">matrix</span><span class="p">;</span>
+<span class="k">if</span> <span class="p">(</span><span class="n">pparray_to_matrix</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="o">&</span><span class="n">matrix</span><span class="p">)</span> <span class="o">!=</span> <span class="n">NULL</span><span class="p">)</span>
+  <span class="p">;</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">matrix</span>
+</pre></div>
+</div>
+<p>To get the matrix from dict:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppmatrix</span> <span class="o">*</span> <span class="n">ppdict_get_matrix</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">name</span><span class="p">,</span> <span class="n">ppmatrix</span> <span class="o">*</span><span class="n">matrix</span><span class="p">);</span>
+<span class="o">//</span> <span class="n">eg</span><span class="o">.</span> <span class="n">ppdict_get_matrix</span><span class="p">(</span><span class="n">imagedict</span><span class="p">,</span> <span class="s2">"Matrix"</span><span class="p">,</span> <span class="o">&</span><span class="n">matrix</span><span class="p">)</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="errors-handling">
+<h2>Errors handling<a class="headerlink" href="#errors-handling" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> is not verbose, but might happen that it needs to log some error message, eg. when parsing
+of some PDF boject fails due to invalid offsets. By default, <code class="docutils literal notranslate"><span class="pre">pplib</span></code> prints the message to stdout, eg.:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">invalid</span> <span class="mi">123</span> <span class="mi">0</span> <span class="n">R</span> <span class="nb">object</span> <span class="n">at</span> <span class="n">offset</span> <span class="mi">123123</span>
+</pre></div>
+</div>
+<p>To replace the default logger, you can provide your own:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">pplog_callback</span> <span class="p">(</span><span class="n">pplogger_callback</span> <span class="n">logger</span><span class="p">,</span> <span class="n">void</span> <span class="o">*</span><span class="n">alien</span><span class="p">);</span>
+</pre></div>
+</div>
+<p><code class="docutils literal notranslate"><span class="pre">pplogger_callback</span></code> is a function:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">your_callback</span> <span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">message</span><span class="p">,</span> <span class="n">void</span> <span class="o">*</span><span class="n">alien</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>In example, to redirect messages to stderr you may define a function:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">void</span> <span class="n">your_callback</span> <span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">message</span><span class="p">,</span> <span class="n">void</span> <span class="o">*</span><span class="n">alien</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="n">fprintf</span><span class="p">((</span><span class="n">FILE</span> <span class="o">*</span><span class="p">)</span><span class="n">alien</span><span class="p">,</span> <span class="s2">"</span><span class="se">\n</span><span class="s2">ooops: </span><span class="si">%s</span><span class="se">\n</span><span class="s2">"</span><span class="p">,</span> <span class="n">message</span><span class="p">);</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>Then set the callback somewhere before loading documents:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pplog_callback</span><span class="p">(</span><span class="n">your_callback</span><span class="p">,</span> <span class="n">stderr</span><span class="p">);</span>
+</pre></div>
+</div>
+<p>(example 2 uses that).</p>
+<p>To set the default log messages prefix, eg. <code class="docutils literal notranslate"><span class="pre">pplib:</span></code>, use:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">pplog_prefix</span> <span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">prefix</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>Default is empty. The function succeeds if provided prefix is reasonably short (less then 32 bytes).</p>
+</div>
+</div>
+
+
+          </div>
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
+    <div class="related" role="navigation" aria-label="related navigation">
+      <h3>Navigation</h3>
+      <ul>
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+          <a href="genindex.html" title="General Index"
+             >index</a></li>
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+          <a href="ppapi-1.x.html" title="pplib 1.x"
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+      Created using <a href="http://sphinx-doc.org/">Sphinx</a> 1.8.5.
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===================================================================
--- trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/ppapi.html	                        (rev 0)
+++ trunk/Build/source/texk/web2c/luatexdir/luapplib/doc/_build/html/ppapi.html	2020-02-15 12:45:08 UTC (rev 53789)
@@ -0,0 +1,1030 @@
+
+
+<!doctype html>
+
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+  <head>
+    <meta http-equiv="X-UA-Compatible" content="IE=Edge" />
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+    <title>pplib — pplib 0.1 documentation</title>
+    <link rel="stylesheet" href="_static/bizstyle.css" type="text/css" />
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+      <ul>
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+             accesskey="N">next</a> |</li>
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+             accesskey="P">previous</a> |</li>
+        <li class="nav-item nav-item-0"><a href="pplib.html">pplib 0.1 documentation</a> »</li> 
+      </ul>
+    </div>
+      <div class="sphinxsidebar" role="navigation" aria-label="main navigation">
+        <div class="sphinxsidebarwrapper">
+  <h3><a href="pplib.html">Table of Contents</a></h3>
+  <ul>
+<li><a class="reference internal" href="#"><code class="docutils literal notranslate"><span class="pre">pplib</span></code></a></li>
+<li><a class="reference internal" href="#c-api">C-API</a><ul>
+<li><a class="reference internal" href="#types">Types</a></li>
+<li><a class="reference internal" href="#object">Object</a></li>
+<li><a class="reference internal" href="#names">Names</a></li>
+<li><a class="reference internal" href="#string">String</a></li>
+<li><a class="reference internal" href="#array">Array</a></li>
+<li><a class="reference internal" href="#dict">Dict</a></li>
+<li><a class="reference internal" href="#stream">Stream</a></li>
+<li><a class="reference internal" href="#filters">Filters</a></li>
+<li><a class="reference internal" href="#ref">Ref</a></li>
+<li><a class="reference internal" href="#xref">XRef</a></li>
+<li><a class="reference internal" href="#pdf">PDF</a></li>
+<li><a class="reference internal" href="#encryption">Encryption</a></li>
+<li><a class="reference internal" href="#pages">Pages</a></li>
+<li><a class="reference internal" href="#contents">Contents</a></li>
+<li><a class="reference internal" href="#boxes">Boxes</a></li>
+<li><a class="reference internal" href="#transforms">Transforms</a></li>
+<li><a class="reference internal" href="#errors-handling">Errors handling</a></li>
+</ul>
+</li>
+</ul>
+
+  <h4>Previous topic</h4>
+  <p class="topless"><a href="pplib.html"
+                        title="previous chapter">pplib</a></p>
+  <h4>Next topic</h4>
+  <p class="topless"><a href="ppcode.html"
+                        title="next chapter">Examples</a></p>
+  <div role="note" aria-label="source link">
+    <h3>This Page</h3>
+    <ul class="this-page-menu">
+      <li><a href="_sources/ppapi.rst.txt"
+            rel="nofollow">Show Source</a></li>
+    </ul>
+   </div>
+<div id="searchbox" style="display: none" role="search">
+  <h3>Quick search</h3>
+    <div class="searchformwrapper">
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+
+    <div class="document">
+      <div class="documentwrapper">
+        <div class="bodywrapper">
+          <div class="body" role="main">
+            
+  <div class="section" id="pplib">
+<h1><code class="docutils literal notranslate"><span class="pre">pplib</span></code><a class="headerlink" href="#pplib" title="Permalink to this headline">¶</a></h1>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> is a library for raw PDF access. It parses PDF documents and provides an interface to access document structures in C.</p>
+</div>
+<div class="section" id="c-api">
+<h1>C-API<a class="headerlink" href="#c-api" title="Permalink to this headline">¶</a></h1>
+<div class="section" id="types">
+<h2>Types<a class="headerlink" href="#types" title="Permalink to this headline">¶</a></h2>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> defines several C-types to represent PDF types:</p>
+<ul class="simple">
+<li><code class="docutils literal notranslate"><span class="pre">ppint</span></code> - signed integer (<code class="docutils literal notranslate"><span class="pre">int64_t</span></code>)</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppnum</span></code> - real number (double)</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppname</span></code> - PDF name</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppstring</span></code> - PDF string</li>
+<li><code class="docutils literal notranslate"><span class="pre">pparray</span></code> - PDF array</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppdict</span></code> - PDF dict</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppstream</span></code> - PDF stream</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppref</span></code> - PDF indirect reference</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppobj</span></code> - a container of all above</li>
+</ul>
+<p>Among <code class="docutils literal notranslate"><span class="pre">ppint</span></code> and <code class="docutils literal notranslate"><span class="pre">ppnum</span></code>, we also use <code class="docutils literal notranslate"><span class="pre">ppuint</span></code> - unsigned integer (machine word, alias to <code class="docutils literal notranslate"><span class="pre">size_t</span></code>).</p>
+<p>Other API types:</p>
+<ul class="simple">
+<li><code class="docutils literal notranslate"><span class="pre">ppdoc</span></code> - PDF document</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppxref</span></code> - cross-references table</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppcontext</span></code> - … later</li>
+<li><code class="docutils literal notranslate"><span class="pre">pprect</span></code> - rectangle</li>
+<li><code class="docutils literal notranslate"><span class="pre">ppmatrix</span></code> - matrix</li>
+</ul>
+<p>Integer, number, name and string are treated as simple types.
+Names and strings are actually C-structures, but exposed to API as typedefs to <code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code>.
+Other types (array, dict, stream, reference, object container, xref, PDF) are C-structures,
+and you operate it their pointers. So when you declare a simple type variable you say:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppuint</span> <span class="n">u</span><span class="p">;</span>
+<span class="n">ppnum</span> <span class="n">n</span><span class="p">;</span>
+<span class="n">ppname</span> <span class="n">name</span><span class="p">;</span>
+<span class="n">ppstring</span> <span class="n">string</span><span class="p">;</span>
+<span class="o">...</span>
+</pre></div>
+</div>
+<p>And when you declare a compound type you operate on pointers:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+<span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">;</span>
+<span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+<span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">;</span>
+<span class="n">ppref</span> <span class="o">*</span><span class="n">ref</span><span class="p">;</span>
+<span class="n">ppdoc</span> <span class="o">*</span><span class="n">pdf</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>Some of those C-types are defined in library header <code class="docutils literal notranslate"><span class="pre">ppapi.h</span></code> (complete types). Some others are incomplete
+(eg. you can’t say <code class="docutils literal notranslate"><span class="pre">sizeof(ppdoc)</span></code> or <code class="docutils literal notranslate"><span class="pre">sizeof(ppxref)</span></code>). This is to avoid unnecesary dependencies in
+the header. [At some points it’s not clear to me what to hide and what to expose, will see.] The library itself
+uses <code class="docutils literal notranslate"><span class="pre">pplib.h</span></code> but for auxilary applications including a standalone <code class="docutils literal notranslate"><span class="pre">ppapi.h</span></code> header should be enough.</p>
+<p><code class="docutils literal notranslate"><span class="pre">pplib</span></code> was designed having <strong>read-only</strong> PDF access in mind. Even if some structure is completelly exposed,
+so that you can directly access its members, you should treat them as read-only. I don’t make them <code class="docutils literal notranslate"><span class="pre">const</span></code> because
+then all variable declarations would need to be <code class="docutils literal notranslate"><span class="pre">const</span></code>, which is annoying, and I’d need some trickery in the library
+internals to unconst. Besides, nothing is really const for C type casts.</p>
+</div>
+<div class="section" id="object">
+<h2>Object<a class="headerlink" href="#object" title="Permalink to this headline">¶</a></h2>
+<p>A common container for all elementary PDF object types is <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> structure. <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> has a type identifier
+(integer) and union of values:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">struct</span> <span class="n">ppobj</span> <span class="p">{</span>
+  <span class="n">ppobjtp</span> <span class="nb">type</span><span class="p">;</span>
+  <span class="n">union</span> <span class="p">{</span>
+    <span class="n">ppint</span> <span class="n">integer</span><span class="p">;</span>
+    <span class="n">ppnum</span> <span class="n">number</span><span class="p">;</span>
+    <span class="n">ppname</span> <span class="n">name</span><span class="p">;</span>
+    <span class="n">ppstring</span> <span class="n">string</span><span class="p">;</span>
+    <span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">;</span>
+    <span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">;</span>
+    <span class="n">ppstream</span> <span class="o">*</span><span class="n">stream</span><span class="p">;</span>
+    <span class="n">ppref</span> <span class="o">*</span><span class="n">ref</span><span class="p">;</span>
+    <span class="n">void</span> <span class="o">*</span><span class="nb">any</span><span class="p">;</span>
+  <span class="p">};</span>
+<span class="p">};</span>
+</pre></div>
+</div>
+<p>Object type is one of constants (enum):</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">PPNONE</span>
+<span class="n">PPNULL</span>
+<span class="n">PPBOOL</span>
+<span class="n">PPINT</span>
+<span class="n">PPNUM</span>
+<span class="n">PPNAME</span>
+<span class="n">PPSTRING</span>
+<span class="n">PPARRAY</span>
+<span class="n">PPDICT</span>
+<span class="n">PPSTREAM</span>
+<span class="n">PPREF</span>
+</pre></div>
+</div>
+<p>The type determines the structure member you’re allowed to access:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+<span class="o">...</span>
+<span class="n">switch</span> <span class="p">(</span><span class="n">obj</span><span class="o">-></span><span class="nb">type</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="n">case</span> <span class="n">PPNONE</span><span class="p">:</span> <span class="o">//</span> <span class="n">shouldn</span><span class="s1">'t actually happen, indicates some failure</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPNULL</span><span class="p">:</span> <span class="o">//</span> <span class="n">valid</span> <span class="n">PDF</span> <span class="n">null</span> <span class="nb">object</span><span class="p">,</span> <span class="n">no</span> <span class="n">value</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPBOOL</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">integer</span> <span class="p">(</span><span class="n">ppint</span><span class="p">),</span> <span class="n">value</span> <span class="mi">0</span> <span class="ow">or</span> <span class="mi">1</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPINT</span><span class="p">:</span>  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">integer</span> <span class="p">(</span><span class="n">ppint</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPNUM</span><span class="p">:</span>  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">number</span> <span class="p">(</span><span class="n">ppnum</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPNAME</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">name</span> <span class="p">(</span><span class="n">ppname</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPSTRING</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">string</span> <span class="p">(</span><span class="n">ppstring</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPARRAY</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">array</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPDICT</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="nb">dict</span> <span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPSTREAM</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">stream</span> <span class="p">(</span><span class="n">ppstream</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPREF</span><span class="p">:</span> <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">obj</span><span class="o">-></span><span class="n">ref</span> <span class="p">(</span><span class="n">ppref</span> <span class="o">*</span><span class="p">)</span>
+    <span class="k">break</span><span class="p">;</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>More often then not you know exactly what type of object value is expected, in which case
+you may use one of the following macros:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">//</span> <span class="n">returns</span> <span class="mi">1</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPNULL</span>
+<span class="nb">int</span> <span class="n">ppobj_get_null</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>         \
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPBOOL</span><span class="p">,</span> <span class="n">sets</span> <span class="nb">int</span> <span class="n">v</span> <span class="n">to</span> <span class="mi">0</span> <span class="ow">or</span> <span class="mi">1</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_bool</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPINT</span><span class="p">,</span> <span class="n">sets</span> <span class="n">ppint</span> <span class="n">v</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_int</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPINT</span> <span class="ow">and</span> <span class="o">>=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">sets</span> <span class="n">ppuint</span> <span class="n">v</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_uint</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPNUM</span> <span class="ow">or</span> <span class="n">PPINT</span><span class="p">,</span> <span class="n">sets</span> <span class="n">ppnum</span> <span class="n">v</span> <span class="ow">and</span> <span class="n">returns</span> <span class="mi">1</span><span class="p">,</span> <span class="mi">0</span> <span class="n">otherwise</span>
+<span class="nb">int</span> <span class="n">ppobj_get_num</span><span class="p">(</span><span class="n">o</span><span class="p">,</span> <span class="n">v</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPNAME</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">name</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppname</span> <span class="n">ppobj_get_name</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPSTRING</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">string</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppstring</span> <span class="n">ppobj_get_string</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPARRAY</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">array</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">pparray</span> <span class="o">*</span> <span class="n">ppobj_get_array</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPDICT</span> <span class="n">returns</span> <span class="n">the</span> <span class="nb">dict</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">ppobj_get_dict</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPSTREAM</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">stream</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppstream</span> <span class="o">*</span> <span class="n">ppobj_get_stream</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+
+<span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPREF</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">reference</span><span class="p">,</span> <span class="n">NULL</span> <span class="n">otherwise</span>
+<span class="n">ppref</span> <span class="o">*</span> <span class="n">ppobj_get_ref</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>Note the coercion from integer to real number, but not reverse. In practise, whenever you expect a real number,
+you should also handle integer (eg. ‘1’ used instead of ‘1.0’).</p>
+<p>It is a common case that the object is given as an indirect reference, but what you actually
+want is not the reference, but the object referred by it. Here is a helper for it:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">//</span> <span class="k">if</span> <span class="n">o</span><span class="o">-></span><span class="nb">type</span> <span class="ow">is</span> <span class="n">PPREF</span><span class="p">,</span> <span class="n">returns</span> <span class="n">what</span> <span class="n">the</span> <span class="n">reference</span> <span class="n">points</span><span class="p">,</span> <span class="n">otherwise</span> <span class="n">returns</span> <span class="n">o</span>
+<span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppobj_rget_obj</span><span class="p">(</span><span class="n">o</span><span class="p">)</span>
+</pre></div>
+</div>
+<p>Also every <code class="docutils literal notranslate"><span class="pre">ppobj_get_*</span></code> macro has <code class="docutils literal notranslate"><span class="pre">ppobj_rget_*</span></code> counterpart that makes a check
+for the expected type, but if the object is PPREF, it jumps to the target object.
+So for example <code class="docutils literal notranslate"><span class="pre">ppobj_rget_dict(obj)</span></code> will return dict if <code class="docutils literal notranslate"><span class="pre">obj</span></code> is of type PPDICT
+or if it is of type PPREF and <code class="docutils literal notranslate"><span class="pre">obj->ref</span></code> hosts an object of type PPDICT.</p>
+</div>
+<div class="section" id="names">
+<h2>Names<a class="headerlink" href="#names" title="Permalink to this headline">¶</a></h2>
+<p>PDF names are represented as <code class="docutils literal notranslate"><span class="pre">ppname</span></code>.
+I find it convenient to have <code class="docutils literal notranslate"><span class="pre">ppname</span></code> type pretending <code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code>. This allows to use <code class="docutils literal notranslate"><span class="pre">ppname</span></code>
+in all C-style string functions like <code class="docutils literal notranslate"><span class="pre">printf("%s",</span> <span class="pre">name)</span></code>.</p>
+<p>Be aware, however, that <code class="docutils literal notranslate"><span class="pre">ppname</span></code> is actually a C-structure. It is perfectly ok to cast <code class="docutils literal notranslate"><span class="pre">ppname</span></code> to <code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code>:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppname</span> <span class="n">name</span><span class="p">;</span>
+<span class="o">...</span>
+<span class="p">(</span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="p">)</span><span class="n">name</span><span class="p">;</span>
+</pre></div>
+</div>
+<p>But reverse is forbidden:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">const</span> <span class="n">char</span> <span class="o">*</span><span class="n">cstr</span> <span class="o">=</span> <span class="s2">"cstring"</span><span class="p">;</span>
+<span class="o">...</span>
+<span class="p">(</span><span class="n">ppname</span><span class="p">)</span><span class="n">cstr</span><span class="p">;</span> <span class="o">//</span> <span class="n">expect</span> <span class="n">segmentation</span> <span class="n">fault</span> <span class="n">soon</span>
+</pre></div>
+</div>
+<p>For convenient use in C, names are <code class="docutils literal notranslate"><span class="pre">'\0'</span></code> terminated. But to get the length of name better always use
+<code class="docutils literal notranslate"><span class="pre">ppname_size()</span></code> macro. <code class="docutils literal notranslate"><span class="pre">ppname</span></code> object knows its size, don’t use <code class="docutils literal notranslate"><span class="pre">strlen()</span></code>:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppname_size</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">length</span> <span class="n">of</span> <span class="n">name</span> <span class="ow">in</span> <span class="nb">bytes</span>
+</pre></div>
+</div>
+<p>In current implementation names are not hashed anyhow, so name-to-name comparison is not smarter than <code class="docutils literal notranslate"><span class="pre">memcmp()</span></code>.
+Use macros:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">ppname_is</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">,</span> <span class="s2">"literal"</span><span class="p">);</span>    <span class="o">//</span> <span class="n">to</span> <span class="n">compare</span> <span class="n">ppname</span> <span class="k">with</span> <span class="n">C</span><span class="o">-</span><span class="n">literal</span> <span class="n">string</span>
+<span class="nb">int</span> <span class="n">ppname_eq</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">,</span> <span class="n">ppname</span> <span class="n">other</span><span class="p">);</span> <span class="o">//</span> <span class="n">to</span> <span class="n">compare</span> <span class="n">ppname</span> <span class="k">with</span> <span class="n">a</span> <span class="n">different</span> <span class="n">name</span>
+</pre></div>
+</div>
+<p>If you’ll use <code class="docutils literal notranslate"><span class="pre">pplib</span></code> to parse contents streams, you may need to distinguish names from operators
+(more precisely executable names). Names in PDF are preceeded by ‘/’, executable names aren’t. In both
+cases PDF parser will produce <code class="docutils literal notranslate"><span class="pre">ppname</span></code> but can be distingushed with:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">ppname_exec</span><span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">non</span><span class="o">-</span><span class="n">zero</span> <span class="k">if</span> <span class="n">name</span> <span class="ow">is</span> <span class="n">executable</span>
+</pre></div>
+</div>
+<p>Names are kept in their raw form, with possible PDF specific escapes (in text below we call it <strong>encoded</strong> form).
+Leading ‘/’ is omitted, though. One may need a decoded name, with no PDF escapes.
+A pair of functions provides a simple interface to switch between those two forms:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppname</span> <span class="n">ppname_decoded</span> <span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">decoded</span> <span class="p">(</span><span class="n">unescaped</span><span class="p">)</span> <span class="n">form</span> <span class="n">of</span> <span class="n">the</span> <span class="n">name</span>
+<span class="n">ppname</span> <span class="n">ppname_encoded</span> <span class="p">(</span><span class="n">ppname</span> <span class="n">name</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">encoded</span> <span class="p">(</span><span class="n">escaped</span><span class="p">)</span> <span class="n">form</span> <span class="n">of</span> <span class="n">the</span> <span class="n">name</span>
+</pre></div>
+</div>
+<p>In pretty most cases PDF names contains only letters (no special characters, no escapes), so decoded and encoded forms are identical.
+In that case both functions simply return the argument. It is ok to call <code class="docutils literal notranslate"><span class="pre">ppname_decoded()</span></code> on already decoded form
+and <code class="docutils literal notranslate"><span class="pre">ppname_encoded()</span></code> on already encoded form. Both forms are produced by PDF objects parser, so accessing <code class="docutils literal notranslate"><span class="pre">ppname</span></code> alter ego
+in whatever direction needs no extra decoding or allocation costs.</p>
+</div>
+<div class="section" id="string">
+<h2>String<a class="headerlink" href="#string" title="Permalink to this headline">¶</a></h2>
+<p>PDF strings have the same internal construction as names, so most of names description above applies to strings as well.
+<code class="docutils literal notranslate"><span class="pre">ppstring</span></code> is a typedef of <code class="docutils literal notranslate"><span class="pre">const</span> <span class="pre">char</span> <span class="pre">*</span></code>, roughly <code class="docutils literal notranslate"><span class="pre">'\0'</span></code> terminiated C-string. To get the size of the string:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppstring_size</span><span class="p">(</span><span class="n">ppstring</span> <span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">length</span> <span class="n">of</span> <span class="n">the</span> <span class="n">string</span> <span class="ow">in</span> <span class="nb">bytes</span>
+</pre></div>
+</div>
+<p>Strings are provided in their raw form, preserving PDF specific escapes, but with no
+<code class="docutils literal notranslate"><span class="pre">()</span></code> or <code class="docutils literal notranslate"><span class="pre"><></span></code> delims. To distinguish plain strings from hex strings:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">ppstring_hex</span><span class="p">(</span><span class="n">ppstring</span> <span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">non</span> <span class="n">zero</span> <span class="k">if</span> <span class="nb">hex</span> <span class="n">string</span>
+</pre></div>
+</div>
+<p>Or if you prefer:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span>switch (ppstring_type(string))
+{
+  case PPSTRING_PLAIN: // literal string, surrounded by ``(`` and ``)`` in PDF
+    break;
+  case PPSTRING_BASE16: // hex string, surrounded by ``<`` and ``>`` in PDF
+    break;
+  case PPSTRING_BASE85: // base85 string surrounded by ``<~`` and ``~>`` in PDF
+    break;
+}
+</pre></div>
+</div>
+<p>The last is actually Postscript specific, not used in PDF, but I think it might appear in contents streams…
+No matter how the string is given in PDF (plain or hex), here are two functions to
+switch between encoded and decoded strings forms:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstring</span> <span class="n">ppstring_decoded</span> <span class="p">(</span><span class="n">ppstring</span> <span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">decoded</span> <span class="n">string</span> <span class="n">possibly</span> <span class="k">with</span> <span class="n">PDF</span> <span class="n">escapes</span>
+<span class="n">ppstring</span> <span class="n">ppstring_encoded</span> <span class="p">(</span><span class="n">ppstring</span> <span class="n">string</span><span class="p">);</span> <span class="o">//</span> <span class="n">returns</span> <span class="n">encoded</span> <span class="n">string</span> <span class="k">with</span> <span class="n">no</span> <span class="n">PDF</span> <span class="n">escapes</span>
+</pre></div>
+</div>
+<p>For hex strings, encoded form contains hex digits, while decoded form contains arbitrary bytes (the result of hex decoding).
+Plain strings usually contains printable ASCII characters, but they might contain any binary data.
+As with names, objects parser produces both forms. The raw form with PDF escapes (or raw hex form) is considered the main one.
+Eg. when you access <code class="docutils literal notranslate"><span class="pre">obj->string</span></code> you always get the encoded form. At any moment you can switch to its alter ego.</p>
+<p>No matter if the string is plain or hex, if its first two bytes (decoded) are UTF16 BOM, the string
+is considered unicode. <code class="docutils literal notranslate"><span class="pre">ppstring</span></code> object <em>knows</em> it is unicode or not:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">switch</span> <span class="p">(</span><span class="n">ppstring_utf</span><span class="p">(</span><span class="n">string</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="n">case</span> <span class="n">PPSTRING_UTF16LE</span><span class="p">:</span> <span class="o">//</span> <span class="n">unicode</span> <span class="n">string</span><span class="p">,</span> <span class="n">utf16le</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">case</span> <span class="n">PPSTRING_UTF16BE</span><span class="p">:</span> <span class="o">//</span> <span class="n">unicode</span> <span class="n">string</span><span class="p">,</span> <span class="n">utf16be</span>
+    <span class="k">break</span><span class="p">;</span>
+  <span class="n">default</span><span class="p">:</span>               <span class="o">//</span> <span class="n">no</span> <span class="n">unicode</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>Or simply:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="k">if</span> <span class="p">(</span><span class="n">ppstring_utf</span><span class="p">(</span><span class="n">string</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">)</span> <span class="p">{</span>
+  <span class="o">//</span> <span class="n">handle</span> <span class="n">unicode</span> <span class="n">string</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>If the string is unicode, BOM remains the part of the string  – <code class="docutils literal notranslate"><span class="pre">pplib</span></code> parser does not strip it.
+Unicode or not, encoded or decoded, strings are always C-arrays of bytes and <code class="docutils literal notranslate"><span class="pre">ppstring_size()</span></code>
+always returns the size in bytes.</p>
+</div>
+<div class="section" id="array">
+<h2>Array<a class="headerlink" href="#array" title="Permalink to this headline">¶</a></h2>
+<p>PDF arrays are represented as <code class="docutils literal notranslate"><span class="pre">pparray</span></code> type, which is C-array of <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> structures.
+To get the size:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">pparray_size</span><span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">number</span> <span class="n">of</span> <span class="n">array</span> <span class="n">items</span>
+</pre></div>
+</div>
+<p>To get <code class="docutils literal notranslate"><span class="pre">ppobj</span> <span class="pre">*</span></code> at a given index:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">pparray_at</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span>  <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">ppobj</span> <span class="o">*</span> <span class="p">(</span><span class="n">no</span> <span class="n">index</span> <span class="n">check</span><span class="p">)</span>
+<span class="n">ppobj</span> <span class="o">*</span> <span class="n">pparray_get</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">ppobj</span> <span class="o">*</span> <span class="ow">or</span> <span class="n">NULL</span> <span class="p">(</span><span class="k">with</span> <span class="n">index</span> <span class="n">check</span><span class="p">)</span>
+<span class="n">ppobj</span> <span class="o">*</span> <span class="n">pparray_get_obj</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>  <span class="o">//</span> <span class="n">function</span> <span class="n">equiv</span> <span class="n">to</span> <span class="n">pparray_get</span><span class="p">()</span>
+</pre></div>
+</div>
+<p>Iterating over array elements:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">;</span>
+<span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">size</span><span class="p">;</span>
+<span class="n">ppobj</span> <span class="o">*</span><span class="n">obj</span><span class="p">;</span>
+<span class="k">for</span> <span class="p">(</span><span class="n">size</span> <span class="o">=</span> <span class="n">pparray_size</span><span class="p">(</span><span class="n">array</span><span class="p">),</span> <span class="n">pparray_first</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">,</span> <span class="n">obj</span><span class="p">);</span> <span class="n">index</span> <span class="o"><</span> <span class="n">size</span><span class="p">;</span> <span class="n">pparray_next</span><span class="p">(</span><span class="n">index</span><span class="p">,</span> <span class="n">obj</span><span class="p">))</span>
+<span class="p">{</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">index</span> <span class="ow">and</span> <span class="n">obj</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>There is no magic first/next macros, just iteration over pointers. One could also use something like:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="k">for</span> <span class="p">(</span><span class="n">index</span> <span class="o">=</span> <span class="mi">0</span><span class="p">,</span> <span class="n">size</span> <span class="o">=</span> <span class="n">array</span><span class="o">-></span><span class="n">size</span><span class="p">;</span> <span class="n">index</span> <span class="o"><</span> <span class="n">size</span><span class="p">;</span> <span class="o">++</span><span class="n">index</span><span class="p">)</span>
+<span class="p">{</span>
+  <span class="n">obj</span> <span class="o">=</span> <span class="n">pparray_at</span><span class="p">(</span><span class="n">array</span><span class="p">,</span> <span class="n">index</span><span class="p">);</span>
+  <span class="o">//</span> <span class="n">do</span> <span class="n">something</span> <span class="k">with</span> <span class="n">index</span> <span class="ow">and</span> <span class="n">obj</span>
+<span class="p">}</span>
+</pre></div>
+</div>
+<p>When getting values from array and expecting a result of known type, use one of the following:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="nb">int</span> <span class="n">pparray_get_bool</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="nb">int</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>    <span class="o">//</span> <span class="n">get</span> <span class="n">boolean</span> <span class="n">value</span>
+<span class="nb">int</span> <span class="n">pparray_get_int</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">ppint</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>   <span class="o">//</span> <span class="n">get</span> <span class="n">ppint</span> <span class="n">value</span>
+<span class="nb">int</span> <span class="n">pparray_get_uint</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">ppuint</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span> <span class="o">//</span> <span class="n">get</span> <span class="n">ppuint</span> <span class="n">value</span>
+<span class="nb">int</span> <span class="n">pparray_get_num</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">,</span> <span class="n">ppnum</span> <span class="o">*</span><span class="n">v</span><span class="p">);</span>   <span class="o">//</span> <span class="n">get</span> <span class="n">ppnum</span> <span class="n">value</span>
+<span class="n">ppname</span> <span class="n">pparray_get_name</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>         <span class="o">//</span> <span class="n">get</span> <span class="n">ppname</span> <span class="n">value</span>
+<span class="n">ppstring</span> <span class="n">pparray_get_string</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>     <span class="o">//</span> <span class="n">get</span> <span class="n">ppstring</span> <span class="n">value</span>
+<span class="n">pparray</span> <span class="o">*</span> <span class="n">pparray_get_array</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>     <span class="o">//</span> <span class="n">get</span> <span class="n">pparray</span> <span class="o">*</span> <span class="n">value</span>
+<span class="n">ppdict</span> <span class="o">*</span> <span class="n">pparray_get_dict</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>       <span class="o">//</span> <span class="n">get</span> <span class="n">ppdict</span> <span class="o">*</span> <span class="n">value</span>
+<span class="n">ppref</span> <span class="o">*</span> <span class="n">pparray_get_ref</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>         <span class="o">//</span> <span class="n">get</span> <span class="n">ppref</span> <span class="o">*</span> <span class="n">value</span>
+</pre></div>
+</div>
+<p>As with <code class="docutils literal notranslate"><span class="pre">ppobj_get_*</span></code> suite, numeric types getters set the value of a given type and returns 1, if the type matches.
+Otherwise sets nothing and returns 0. Other getters return the value if the type matches, or NULL.</p>
+<p>Every function from <code class="docutils literal notranslate"><span class="pre">pparray_get_*</span></code> suite have its <code class="docutils literal notranslate"><span class="pre">pparray_rget_*</span></code> counterpart that
+that dereferences indirect objects (as explained for <code class="docutils literal notranslate"><span class="pre">ppobj_rget_*</span></code> getters). Note that
+there is no <code class="docutils literal notranslate"><span class="pre">pparray_get_stream()</span></code> function, as streams in PDF are always indirect.
+To get the stream from array use:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppstream</span> <span class="o">*</span> <span class="n">pparray_rget_stream</span> <span class="p">(</span><span class="n">pparray</span> <span class="o">*</span><span class="n">array</span><span class="p">,</span> <span class="n">size_t</span> <span class="n">index</span><span class="p">);</span>
+</pre></div>
+</div>
+</div>
+<div class="section" id="dict">
+<h2>Dict<a class="headerlink" href="#dict" title="Permalink to this headline">¶</a></h2>
+<p>PDF dicts are represented as <code class="docutils literal notranslate"><span class="pre">ppdict</span></code> structure, which is C-array of <code class="docutils literal notranslate"><span class="pre">ppobj</span></code> with parallel
+C-array of <code class="docutils literal notranslate"><span class="pre">ppname</span></code> pointers. To get the size of a dict:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">size_t</span> <span class="n">ppdict_size</span><span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">returns</span> <span class="n">the</span> <span class="n">number</span> <span class="n">of</span> <span class="n">key</span><span class="o">-</span><span class="n">val</span> <span class="n">pairs</span>
+</pre></div>
+</div>
+<p>To get the value at a given index (integer):</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppobj</span> <span class="o">*</span> <span class="n">ppdict_at</span><span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">no</span> <span class="n">index</span> <span class="n">check</span>
+</pre></div>
+</div>
+<p>To get the name (key) at a given index:</p>
+<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ppname</span> <span class="n">ppdict_key</span><span class="p">(</span><span class="n">ppdict</span> <span class="o">*</span><span class="nb">dict</span><span class="p">,</span> <span class="n">index</span><span class="p">)</span> <span class="o">//</span> <span class="n">macro</span><span class="p">,</span> <span class="n">no</span> <span class="n">index</span> <span class="n">check</span>
+</pre></div>
+</div>
+<p>To iterate over dict key-val pairs:</p>

@@ Diff output truncated at 1234567 characters. @@


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