[latex3-commits] [git/LaTeX3-latex3-luaotfload] lessglobals-dev: Isolate fontloader environment (5b3aad6)
Marcel Fabian Krüger
tex at 2krueger.de
Mon Sep 2 17:54:39 CEST 2019
Repository : https://github.com/latex3/luaotfload
On branch : lessglobals-dev
Link : https://github.com/latex3/luaotfload/commit/5b3aad6563b58932646b5b01492b53326f31a5bf
>---------------------------------------------------------------
commit 5b3aad6563b58932646b5b01492b53326f31a5bf
Author: Marcel Fabian Krüger <tex at 2krueger.de>
Date: Mon Sep 2 14:19:22 2019 +0200
Isolate fontloader environment
>---------------------------------------------------------------
5b3aad6563b58932646b5b01492b53326f31a5bf
src/luaotfload-configuration.lua | 2 +-
src/luaotfload-database.lua | 14 +-
src/luaotfload-init.lua | 391 +++++----------------
src/luaotfload-main.lua | 30 +-
src/luaotfload-resolvers.lua | 3 +-
src/luaotfload-tool.lua | 1 +
texmf/scripts/luaotfload/luaotfload-tool.lua | 1 +
.../luaotfload/luaotfload-configuration.lua | 2 +-
.../latex-dev/luaotfload/luaotfload-database.lua | 14 +-
texmf/tex/latex-dev/luaotfload/luaotfload-init.lua | 391 +++++----------------
texmf/tex/latex-dev/luaotfload/luaotfload-main.lua | 30 +-
.../latex-dev/luaotfload/luaotfload-resolvers.lua | 3 +-
12 files changed, 224 insertions(+), 658 deletions(-)
diff --git a/src/luaotfload-configuration.lua b/src/luaotfload-configuration.lua
index 33eb797..da2de26 100644
--- a/src/luaotfload-configuration.lua
+++ b/src/luaotfload-configuration.lua
@@ -62,7 +62,7 @@ local filejoin = file.join
local filereplacesuffix = file.replacesuffix
local logreport = print -- overloaded later
-local getwritablepath = caches.getwritablepath
+local getwritablepath = luaotfload.fontloader.caches.getwritablepath
local config_parser -- set later during init
diff --git a/src/luaotfload-database.lua b/src/luaotfload-database.lua
index 009d2d9..4c210a3 100644
--- a/src/luaotfload-database.lua
+++ b/src/luaotfload-database.lua
@@ -148,7 +148,6 @@ local gzipload = gzip.load
local gzipsave = gzip.save
local iolines = io.lines
local ioopen = io.open
-local iopopen = io.popen
local kpseexpand_path = kpse.expand_path
local kpsefind_file = kpse.find_file
local kpselookup = kpse.lookup
@@ -168,13 +167,14 @@ local stringgmatch = string.gmatch
local stringgsub = string.gsub
local stringlower = string.lower
local stringsub = string.sub
-local stringupper = string.upper
local tableconcat = table.concat
local tablesort = table.sort
local utf8len = utf8.len
local utf8offset = utf8.offset
--- these come from Lualibs/Context
+local context_environment = luaotfload.fontloader
+local caches = context_environment.caches
local filebasename = file.basename
local filecollapsepath = file.collapsepath or file.collapse_path
local filedirname = file.dirname
@@ -198,9 +198,9 @@ local tablecontains = table.contains
local tablecopy = table.copy
local tablefastcopy = table.fastcopy
local tabletofile = table.tofile
-local tabletohash = table.tohash
local tableserialize = table.serialize
local names = fonts and fonts.names or { }
+local resolversfindfile = context_environment.resolvers.findfile
--- some of our own
local unicode = require'luaotfload-unicode'
@@ -736,7 +736,7 @@ lookup_font_file = function (filename)
if not found then
local type = file.suffix(filename)
if type ~= "" then
- found = resolvers.findfile(filename, type)
+ found = resolversfindfile(filename, type)
end
end
@@ -746,7 +746,7 @@ lookup_font_file = function (filename)
for i=1, #type1_metrics do
local format = type1_metrics[i]
- if resolvers.findfile(filename, format) then
+ if resolversfindfile(filename, format) then
return file.addsuffix(filename, format), format, true
end
end
@@ -785,7 +785,7 @@ local get_font_file = function (index)
end
local basename = entry.basename
if entry.location == "texmf" then
- local fullname = resolvers.findfile(basename, entry.format)
+ local fullname = resolversfindfile(basename, entry.format)
if fullname then
return true, fullname, entry.subfont
end
@@ -809,7 +809,7 @@ local verify_font_file = function (basename)
if path and lfsisfile(path) then
return true
end
- if resolvers.findfile(basename) then
+ if resolversfindfile(basename) then
return true
end
return false
diff --git a/src/luaotfload-init.lua b/src/luaotfload-init.lua
index cefbc4a..94c534b 100644
--- a/src/luaotfload-init.lua
+++ b/src/luaotfload-init.lua
@@ -78,122 +78,6 @@ local logreport --- filled in after loading the log module
--doc]]--
-local init_early = function ()
-
- local store = { }
- config = config or { } --- global
- config.luaotfload = config.luaotfload or { }
- config.lualibs = config.lualibs or { }
- config.lualibs.verbose = false
- config.lualibs.prefer_merged = true
- config.lualibs.load_extended = true
- fonts = fonts or { }
-
- require "lualibs"
-
- if not lualibs then error "this module requires Luaotfload" end
- if not luaotfload then error "this module requires Luaotfload" end
-
- --[[doc--
-
- The logger needs to be in place prior to loading the fontloader due
- to order of initialization being crucial for the logger functions
- that are swapped.
-
- --doc]]--
-
- luaotfload.loaders.luaotfload "log"
- log = luaotfload.log
- logreport = log.report
- log.set_loglevel (default_log_level)
-
- logreport ("log", 4, "init", "Concealing callback.register().")
- store.trapped_register = callback.register
-
- callback.register = function (id)
- logreport ("log", 4, "init",
- "Dummy callback.register() invoked on %s.",
- id)
- end
-
- --[[doc--
-
- By default, the fontloader requires a number of \emphasis{private
- attributes} for internal use.
- These must be kept consistent with the attribute handling methods
- as provided by \identifier{luatexbase}.
- Our strategy is to override the function that allocates new
- attributes before we initialize the font loader, making it a
- wrapper around \luafunction{luatexbase.new_attribute}.\footnote{%
- Many thanks, again, to Hans Hagen for making this part
- configurable!
- }
- The attribute identifiers are prefixed “\fileent{luaotfload@}” to
- avoid name clashes.
-
- --doc]]--
-
- local new_attribute = luatexbase.new_attribute
- local the_attributes = luatexbase.attributes
-
- attributes = attributes or { } --- this writes a global, sorry
-
- attributes.private = function (name)
- local attr = "luaotfload@" .. name --- used to be: “otfl@”
- local number = the_attributes[attr]
- if not number then number = new_attribute(attr) end
- return number
- end
-
- luaotfload.loaders.fontloader "basics-gen"
-
- return store
-end --- [init_early]
-
---[[doc--
-
- These next lines replicate the behavior of
- \fileent{luatex-fonts.lua}.
-
---doc]]--
-
-local push_namespaces = function ()
- logreport ("log", 4, "init", "push namespace for font loader")
- local normalglobal = { }
- for k, v in next, _G do
- normalglobal[k] = v
- end
- return normalglobal
-end
-
-local pop_namespaces = function (normalglobal,
- isolate,
- context_environment)
- if normalglobal then
- local _G = _G
- local mode = "non-destructive"
- if isolate then mode = "destructive" end
- logreport ("log", 4, "init", "pop namespace from font loader -- " . mode)
- for k, v in next, _G do
- if not normalglobal[k] then
- context_environment[k] = v
- if isolate then
- _G[k] = nil
- end
- end
- end
- for k, v in next, normalglobal do
- _G[k] = v
- end
- -- just to be sure:
- setmetatable(context_environment, _G)
- else
- logreport ("both", 0, "init",
- "irrecoverable error during pop_namespace: no globals to restore")
- os.exit ()
- end
-end
-
--- below paths are relative to the texmf-context
local ltx = "tex/generic/context/luatex"
local ctx = { "tex/context/base/mkiv", "tex/context/base" }
@@ -308,159 +192,71 @@ local load_context_modules = function (pth)
end
-local init_adapt = function ()
+local function init_main(early_hook)
+ config = config or { } --- global
+ config.luaotfload = config.luaotfload or { }
+ config.lualibs = config.lualibs or { }
+ config.lualibs.verbose = false
+ config.lualibs.prefer_merged = true
+ config.lualibs.load_extended = true
+ fonts = fonts or { }
+
+ require "lualibs"
- local context_environment = { }
- local our_environment = push_namespaces ()
+ if not lualibs then error "this module requires Luaotfload" end
+ if not luaotfload then error "this module requires Luaotfload" end
--[[doc--
- The font loader requires that the attribute with index zero be
- zero. We happily oblige.
- (Cf. \fileent{luatex-fonts-nod.lua}.)
+ The logger needs to be in place prior to loading the fontloader due
+ to order of initialization being crucial for the logger functions
+ that are swapped.
--doc]]--
- tex.attribute[0] = 0
-
- return our_environment, context_environment
-
-end --- [init_adapt]
-
---[[doc--
+ luaotfload.loaders.luaotfload "log"
+ log = luaotfload.log
+ logreport = log.report
+ log.set_loglevel (default_log_level)
- In Context, characters.data is where the data from char-def.lua
- resides. The file is huge (>4.4 MB as of 2016) and only a stripped
- down version is part of the isolated font loader. Nevertheless, we
- include an excerpt generated by the mkcharacters script that contains
- a subset of the fields of each character defined and some extra
- metadata.
+ logreport ("log", 4, "init", "Concealing callback.register().")
+ local trapped_register = callback.register
- Currently, these are (compare the mkcharacters script!)
+ callback.register = function (id)
+ logreport ("log", 4, "init",
+ "Dummy callback.register() invoked on %s.",
+ id)
+ end
- · "direction"
- · "mirror"
- · "category"
- · "textclass"
+ --[[doc--
- The directional information is required for packages like Simurgh [0]
- to work correctly. In an early stage [1] it was necessary to load
- further files from Context directly, including the full blown version
- of char-def. Since we have no use for most of the so imported
- functionality, the required parts have been isolated and are now
- instated along with luaotfload-characters.lua. We can extend the set
- of imported features easily should it not be enough.
+ By default, the fontloader requires a number of \emphasis{private
+ attributes} for internal use.
+ These must be kept consistent with the attribute handling methods
+ as provided by \identifier{luatexbase}.
+ Our strategy is to override the function that allocates new
+ attributes before we initialize the font loader, making it a
+ wrapper around \luafunction{luatexbase.new_attribute}.\footnote{%
+ Many thanks, again, to Hans Hagen for making this part
+ configurable!
+ }
+ The attribute identifiers are prefixed “\fileent{luaotfload@}” to
+ avoid name clashes.
- [0] https://github.com/persian-tex/simurgh
- [1] http://tex.stackexchange.com/a/132301/14066
+ --doc]]--
---doc]]--
+ local new_attribute = luatexbase.new_attribute
+ local the_attributes = luatexbase.attributes
---[[--14.12.2018disable characters
---characters = characters or { } --- should be created in basics-gen
---characters.data = nil
---local chardef = "luaotfload-characters"
---
---do
--- local setmetatableindex = function (t, f)
--- local mt = getmetatable (t)
--- if mt then
--- mt.__index = f
--- else
--- setmetatable (t, { __index = f })
--- end
--- end
---
--- --- there are some special tables for each field that provide access
--- --- to fields of the character table by means of a metatable
---
--- local mkcharspecial = function (characters, tablename, field)
---
--- local chardata = characters.data
---
--- if chardata then
--- local newspecial = { }
--- characters [tablename] = newspecial --> e.g. “characters.data.mirrors”
---
--- local idx = function (t, char)
--- local c = chardata [char]
--- if c then
--- local m = c [field] --> e.g. “mirror”
--- if m then
--- t [char] = m
--- return m
--- end
--- end
--- newspecial [char] = false
--- return char
--- end
---
--- setmetatableindex (newspecial, idx)
--- end
---
--- end
---
--- local mkcategories = function (characters) -- different from the others
---
--- local chardata = characters.data
--- local categories = characters.categories or { }
--- characters.categories = categories
---
--- setmetatable (categories, { __index = function (t, char)
--- if char then
--- local c = chardata [char]
--- c = c.category or char
--- t [char] = c
--- return c
--- end
--- end})
---
--- end
---
--- local load_failed = false
--- local chardata --> characters.data; loaded on demand
---
--- local load_chardef = function ()
---
--- logreport ("both", 1, "aux", "Loading character metadata from %s.", chardef)
--- chardata = dofile (kpse.find_file (chardef, "lua"))
---
--- if chardata == nil then
--- logreport ("both", 0, "aux",
--- "Could not load %s; continuing with empty character table.",
--- chardef)
--- chardata = { }
--- load_failed = true
--- end
---
--- characters = { } --- nuke metatable
--- characters.data = chardata
--- characters.classifiers = chardata.classifiers
--- chardata.classifiers = nil
---
--- --- institute some of the functionality from char-ini.lua
---
--- mkcharspecial (characters, "mirrors", "mirror")
--- mkcharspecial (characters, "directions", "direction")
--- mkcharspecial (characters, "textclasses", "textclass")
--- mkcategories (characters)
---
--- end
---
--- local charindex = function (t, k)
--- if chardata == nil and load_failed ~= true then
--- load_chardef ()
--- end
---
--- return rawget (characters, k)
--- end
---
--- setmetatableindex (characters, charindex)
---
---end
---]] --14.12.2018disable characters
-
-local init_main = function ()
+ local context_environment = luaotfload.fontloader
+ context_environment.attributes = {
+ private = function (name)
+ local attr = "luaotfload@" .. name --- used to be: “otfl@”
+ local number = the_attributes[attr]
+ if not number then number = new_attribute(attr) end
+ return number
+ end
+ }
--[[doc--
@@ -473,6 +269,20 @@ local init_main = function ()
local load_fontloader_module = luaotfload.loaders.fontloader
local ignore_module = luaotfload.loaders.ignore
+ load_fontloader_module "basics-gen"
+
+ if early_hook then early_hook() end
+
+ --[[doc--
+
+ The font loader requires that the attribute with index zero be
+ zero. We happily oblige.
+ (Cf. \fileent{luatex-fonts-nod.lua}.)
+
+ --doc]]--
+
+ tex.attribute[0] = 0
+
--[[doc--
Now that things are sorted out we can finally load the
@@ -574,14 +384,14 @@ local init_main = function ()
logreport ("log", 0, "init",
"Loading fontloader from absolute path “%s”.",
fontloader)
- local _void = require (fontloader)
+ local _void = assert (loadfile (fontloader, nil, context_environment)) ()
elseif kpsefind_file (fontloader) then
local path = kpsefind_file (fontloader)
logreport ("log", 0, "init",
"Loading fontloader “%s” from kpse-resolved path “%s”.",
fontloader, path)
- local _void = require (path)
+ local _void = assert (loadfile (path, nil, context_environment)) ()
elseif kpsefind_file (("fontloader-%s.lua"):format(fontloader)) then
logreport ("log", 0, "init",
@@ -605,43 +415,12 @@ local init_main = function ()
logreport ("log", 0, "init",
"Context OpenType loader version “%s”",
fonts.handlers.otf.version)
+ callback.register = trapped_register
+ nodes = context_environment.nodes
+ -- setmetatable(context_environment, nil) -- Would be nice, might break the
+ -- fontloader
end --- [init_main]
-local init_cleanup = function (store)
- --- reinstate all the stuff we had to move out of the way to
- --- accomodate the loader
-
- --[[doc--
-
- Here we adjust the globals created during font loader
- initialization. If the second argument to
- \luafunction{pop_namespaces()} is \verb|true| this will restore the
- state of \luafunction{_G}, eliminating every global generated since
- the last call to \luafunction{push_namespaces()}. At the moment we
- see no reason to do this, and since the font loader is considered
- an essential part of \identifier{luatex} as well as a very well
- organized piece of code, we happily concede it the right to add to
- \luafunction{_G} if needed.
-
- --doc]]--
-
- pop_namespaces (store.our_environment,
- false,
- store.context_environment)
-
- --[[doc--
-
- \subsection{Callbacks}
- After the fontloader is ready we can restore the callback trap
- from \identifier{luatexbase}.
-
- --doc]]--
-
- logreport ("log", 4, "init",
- "Restoring original callback.register().")
- callback.register = store.trapped_register
-end --- [init_cleanup]
-
local init_post_install_callbacks = function ()
--[[doc--
@@ -654,7 +433,7 @@ local init_post_install_callbacks = function ()
--doc]]--
-- MK Pass current text direction to simple_font_handler
- local handler = nodes.simple_font_handler
+ local handler = luaotfload.fontloader.nodes.simple_font_handler
local callback = function(head, groupcode, _, _, direction)
if not direction then
direction = tex.get'textdir'
@@ -774,20 +553,14 @@ local init_post = function ()
return n
end --- [init_post]
-return {
- early = init_early,
- main = function (store)
- local starttime = os.gettimeofday ()
- store.our_environment, store.context_environment = init_adapt ()
- init_main ()
- init_cleanup (store)
- logreport ("both", 1, "init",
- "fontloader loaded in %0.3f seconds",
- os.gettimeofday() - starttime)
- local n = init_post ()
- logreport ("both", 5, "init", "post hook terminated, %d actions performed", n)
- return true
- end
-}
-
+return function (early_hook)
+ local starttime = os.gettimeofday ()
+ init_main (early_hook)
+ logreport ("both", 1, "init",
+ "fontloader loaded in %0.3f seconds",
+ os.gettimeofday() - starttime)
+ local n = init_post ()
+ logreport ("both", 5, "init", "post hook terminated, %d actions performed", n)
+ return true
+end
-- vim:tw=79:sw=2:ts=2:expandtab
diff --git a/src/luaotfload-main.lua b/src/luaotfload-main.lua
index 970e020..10e31ae 100644
--- a/src/luaotfload-main.lua
+++ b/src/luaotfload-main.lua
@@ -142,12 +142,12 @@ local timing_info = {
t_init = { },
}
-local make_loader = function (prefix)
+local make_loader = function (prefix, load_helper)
return function (name)
local t_0 = osgettimeofday ()
local modname = make_loader_name (prefix, name)
--- We don’t want the stack info from inside, so just pcall().
- local ok, data = pcall (require, modname)
+ local ok, data = pcall (load_helper or require, modname)
local t_end = osgettimeofday ()
timing_info.t_load [name] = t_end - t_0
if not ok then
@@ -190,6 +190,16 @@ local dummy_loader = function (name)
name)
end
+local context_environment = setmetatable({}, {__index = _G})
+luaotfload.fontloader = context_environment
+local function context_isolated_load(name)
+ local fullname = kpse.find_file(name, 'lua')
+ if not fullname then
+ error(string.format('Fontloader module "%s" could not be found.', name))
+ end
+ return assert(loadfile(fullname, nil, context_environment))(name)
+end
+
local context_loader = function (name, path)
luaotfload.log.report ("log", 3, "load",
"Loading module “%s” from Context.",
@@ -209,7 +219,7 @@ local context_loader = function (name, path)
path)
end
end
- local ret = require (modpath)
+ local ret = context_isolated_load (modpath)
local t_end = osgettimeofday ()
timing_info.t_load [name] = t_end - t_0
@@ -228,7 +238,7 @@ local install_loaders = function ()
local loaders = { }
local loadmodule = make_loader "luaotfload"
loaders.luaotfload = loadmodule
- loaders.fontloader = make_loader "fontloader"
+ loaders.fontloader = make_loader ("fontloader", context_isolated_load)
loaders.context = context_loader
loaders.ignore = dummy_loader
----loaders.plaintex = make_loader "luatex" --=> for Luatex-Plain
@@ -275,15 +285,13 @@ luaotfload.main = function ()
local starttime = osgettimeofday ()
local init = loadmodule "init" --- fontloader initialization
- local store = init.early () --- injects the log module too
- local logreport = luaotfload.log.report
+ init (function ()
- initialize "parsers" --- fonts.conf and syntax
- initialize "configuration" --- configuration options
+ initialize "parsers" --- fonts.conf and syntax
+ initialize "configuration" --- configuration options
+ end)
- if not init.main (store) then
- logreport ("log", 0, "load", "Main fontloader initialization failed.")
- end
+ local logreport = luaotfload.log.report
initialize "loaders" --- Font loading; callbacks
initialize "database" --- Font management.
diff --git a/src/luaotfload-resolvers.lua b/src/luaotfload-resolvers.lua
index 1cc5fdc..9ed16aa 100644
--- a/src/luaotfload-resolvers.lua
+++ b/src/luaotfload-resolvers.lua
@@ -148,11 +148,12 @@ end
local tex_formats = { "tfm", "ofm" }
+local resolvers_findfile = luaotfload.fontloader.resolvers.findfile
local resolve_tex_format = function (specification)
local name = specification.name
for i=1, #tex_formats do
local format = tex_formats [i]
- local resolved = resolvers.findfile(name, format)
+ local resolved = resolvers_findfile(name, format)
if resolved then
return resolved, format
end
diff --git a/src/luaotfload-tool.lua b/src/luaotfload-tool.lua
index 3a5b168..9058db8 100755
--- a/src/luaotfload-tool.lua
+++ b/src/luaotfload-tool.lua
@@ -25,6 +25,7 @@ local version = ProvidesLuaModule.version
luaotfload.version = ProvidesLuaModule.version
luaotfload.min_luatex_version = { 0, 95, 0 }
luaotfload.self = "luaotfload-tool"
+luaotfload.fontloader = _G -- We don't isolate the fontloader here
--[[doc--
diff --git a/texmf/scripts/luaotfload/luaotfload-tool.lua b/texmf/scripts/luaotfload/luaotfload-tool.lua
index 3a5b168..9058db8 100755
--- a/texmf/scripts/luaotfload/luaotfload-tool.lua
+++ b/texmf/scripts/luaotfload/luaotfload-tool.lua
@@ -25,6 +25,7 @@ local version = ProvidesLuaModule.version
luaotfload.version = ProvidesLuaModule.version
luaotfload.min_luatex_version = { 0, 95, 0 }
luaotfload.self = "luaotfload-tool"
+luaotfload.fontloader = _G -- We don't isolate the fontloader here
--[[doc--
diff --git a/texmf/tex/latex-dev/luaotfload/luaotfload-configuration.lua b/texmf/tex/latex-dev/luaotfload/luaotfload-configuration.lua
index 33eb797..da2de26 100644
--- a/texmf/tex/latex-dev/luaotfload/luaotfload-configuration.lua
+++ b/texmf/tex/latex-dev/luaotfload/luaotfload-configuration.lua
@@ -62,7 +62,7 @@ local filejoin = file.join
local filereplacesuffix = file.replacesuffix
local logreport = print -- overloaded later
-local getwritablepath = caches.getwritablepath
+local getwritablepath = luaotfload.fontloader.caches.getwritablepath
local config_parser -- set later during init
diff --git a/texmf/tex/latex-dev/luaotfload/luaotfload-database.lua b/texmf/tex/latex-dev/luaotfload/luaotfload-database.lua
index 009d2d9..4c210a3 100644
--- a/texmf/tex/latex-dev/luaotfload/luaotfload-database.lua
+++ b/texmf/tex/latex-dev/luaotfload/luaotfload-database.lua
@@ -148,7 +148,6 @@ local gzipload = gzip.load
local gzipsave = gzip.save
local iolines = io.lines
local ioopen = io.open
-local iopopen = io.popen
local kpseexpand_path = kpse.expand_path
local kpsefind_file = kpse.find_file
local kpselookup = kpse.lookup
@@ -168,13 +167,14 @@ local stringgmatch = string.gmatch
local stringgsub = string.gsub
local stringlower = string.lower
local stringsub = string.sub
-local stringupper = string.upper
local tableconcat = table.concat
local tablesort = table.sort
local utf8len = utf8.len
local utf8offset = utf8.offset
--- these come from Lualibs/Context
+local context_environment = luaotfload.fontloader
+local caches = context_environment.caches
local filebasename = file.basename
local filecollapsepath = file.collapsepath or file.collapse_path
local filedirname = file.dirname
@@ -198,9 +198,9 @@ local tablecontains = table.contains
local tablecopy = table.copy
local tablefastcopy = table.fastcopy
local tabletofile = table.tofile
-local tabletohash = table.tohash
local tableserialize = table.serialize
local names = fonts and fonts.names or { }
+local resolversfindfile = context_environment.resolvers.findfile
--- some of our own
local unicode = require'luaotfload-unicode'
@@ -736,7 +736,7 @@ lookup_font_file = function (filename)
if not found then
local type = file.suffix(filename)
if type ~= "" then
- found = resolvers.findfile(filename, type)
+ found = resolversfindfile(filename, type)
end
end
@@ -746,7 +746,7 @@ lookup_font_file = function (filename)
for i=1, #type1_metrics do
local format = type1_metrics[i]
- if resolvers.findfile(filename, format) then
+ if resolversfindfile(filename, format) then
return file.addsuffix(filename, format), format, true
end
end
@@ -785,7 +785,7 @@ local get_font_file = function (index)
end
local basename = entry.basename
if entry.location == "texmf" then
- local fullname = resolvers.findfile(basename, entry.format)
+ local fullname = resolversfindfile(basename, entry.format)
if fullname then
return true, fullname, entry.subfont
end
@@ -809,7 +809,7 @@ local verify_font_file = function (basename)
if path and lfsisfile(path) then
return true
end
- if resolvers.findfile(basename) then
+ if resolversfindfile(basename) then
return true
end
return false
diff --git a/texmf/tex/latex-dev/luaotfload/luaotfload-init.lua b/texmf/tex/latex-dev/luaotfload/luaotfload-init.lua
index cefbc4a..94c534b 100644
--- a/texmf/tex/latex-dev/luaotfload/luaotfload-init.lua
+++ b/texmf/tex/latex-dev/luaotfload/luaotfload-init.lua
@@ -78,122 +78,6 @@ local logreport --- filled in after loading the log module
--doc]]--
-local init_early = function ()
-
- local store = { }
- config = config or { } --- global
- config.luaotfload = config.luaotfload or { }
- config.lualibs = config.lualibs or { }
- config.lualibs.verbose = false
- config.lualibs.prefer_merged = true
- config.lualibs.load_extended = true
- fonts = fonts or { }
-
- require "lualibs"
-
- if not lualibs then error "this module requires Luaotfload" end
- if not luaotfload then error "this module requires Luaotfload" end
-
- --[[doc--
-
- The logger needs to be in place prior to loading the fontloader due
- to order of initialization being crucial for the logger functions
- that are swapped.
-
- --doc]]--
-
- luaotfload.loaders.luaotfload "log"
- log = luaotfload.log
- logreport = log.report
- log.set_loglevel (default_log_level)
-
- logreport ("log", 4, "init", "Concealing callback.register().")
- store.trapped_register = callback.register
-
- callback.register = function (id)
- logreport ("log", 4, "init",
- "Dummy callback.register() invoked on %s.",
- id)
- end
-
- --[[doc--
-
- By default, the fontloader requires a number of \emphasis{private
- attributes} for internal use.
- These must be kept consistent with the attribute handling methods
- as provided by \identifier{luatexbase}.
- Our strategy is to override the function that allocates new
- attributes before we initialize the font loader, making it a
- wrapper around \luafunction{luatexbase.new_attribute}.\footnote{%
- Many thanks, again, to Hans Hagen for making this part
- configurable!
- }
- The attribute identifiers are prefixed “\fileent{luaotfload@}” to
- avoid name clashes.
-
- --doc]]--
-
- local new_attribute = luatexbase.new_attribute
- local the_attributes = luatexbase.attributes
-
- attributes = attributes or { } --- this writes a global, sorry
-
- attributes.private = function (name)
- local attr = "luaotfload@" .. name --- used to be: “otfl@”
- local number = the_attributes[attr]
- if not number then number = new_attribute(attr) end
- return number
- end
-
- luaotfload.loaders.fontloader "basics-gen"
-
- return store
-end --- [init_early]
-
---[[doc--
-
- These next lines replicate the behavior of
- \fileent{luatex-fonts.lua}.
-
---doc]]--
-
-local push_namespaces = function ()
- logreport ("log", 4, "init", "push namespace for font loader")
- local normalglobal = { }
- for k, v in next, _G do
- normalglobal[k] = v
- end
- return normalglobal
-end
-
-local pop_namespaces = function (normalglobal,
- isolate,
- context_environment)
- if normalglobal then
- local _G = _G
- local mode = "non-destructive"
- if isolate then mode = "destructive" end
- logreport ("log", 4, "init", "pop namespace from font loader -- " . mode)
- for k, v in next, _G do
- if not normalglobal[k] then
- context_environment[k] = v
- if isolate then
- _G[k] = nil
- end
- end
- end
- for k, v in next, normalglobal do
- _G[k] = v
- end
- -- just to be sure:
- setmetatable(context_environment, _G)
- else
- logreport ("both", 0, "init",
- "irrecoverable error during pop_namespace: no globals to restore")
- os.exit ()
- end
-end
-
--- below paths are relative to the texmf-context
local ltx = "tex/generic/context/luatex"
local ctx = { "tex/context/base/mkiv", "tex/context/base" }
@@ -308,159 +192,71 @@ local load_context_modules = function (pth)
end
-local init_adapt = function ()
+local function init_main(early_hook)
+ config = config or { } --- global
+ config.luaotfload = config.luaotfload or { }
+ config.lualibs = config.lualibs or { }
+ config.lualibs.verbose = false
+ config.lualibs.prefer_merged = true
+ config.lualibs.load_extended = true
+ fonts = fonts or { }
+
+ require "lualibs"
- local context_environment = { }
- local our_environment = push_namespaces ()
+ if not lualibs then error "this module requires Luaotfload" end
+ if not luaotfload then error "this module requires Luaotfload" end
--[[doc--
- The font loader requires that the attribute with index zero be
- zero. We happily oblige.
- (Cf. \fileent{luatex-fonts-nod.lua}.)
+ The logger needs to be in place prior to loading the fontloader due
+ to order of initialization being crucial for the logger functions
+ that are swapped.
--doc]]--
- tex.attribute[0] = 0
-
- return our_environment, context_environment
-
-end --- [init_adapt]
-
---[[doc--
+ luaotfload.loaders.luaotfload "log"
+ log = luaotfload.log
+ logreport = log.report
+ log.set_loglevel (default_log_level)
- In Context, characters.data is where the data from char-def.lua
- resides. The file is huge (>4.4 MB as of 2016) and only a stripped
- down version is part of the isolated font loader. Nevertheless, we
- include an excerpt generated by the mkcharacters script that contains
- a subset of the fields of each character defined and some extra
- metadata.
+ logreport ("log", 4, "init", "Concealing callback.register().")
+ local trapped_register = callback.register
- Currently, these are (compare the mkcharacters script!)
+ callback.register = function (id)
+ logreport ("log", 4, "init",
+ "Dummy callback.register() invoked on %s.",
+ id)
+ end
- · "direction"
- · "mirror"
- · "category"
- · "textclass"
+ --[[doc--
- The directional information is required for packages like Simurgh [0]
- to work correctly. In an early stage [1] it was necessary to load
- further files from Context directly, including the full blown version
- of char-def. Since we have no use for most of the so imported
- functionality, the required parts have been isolated and are now
- instated along with luaotfload-characters.lua. We can extend the set
- of imported features easily should it not be enough.
+ By default, the fontloader requires a number of \emphasis{private
+ attributes} for internal use.
+ These must be kept consistent with the attribute handling methods
+ as provided by \identifier{luatexbase}.
+ Our strategy is to override the function that allocates new
+ attributes before we initialize the font loader, making it a
+ wrapper around \luafunction{luatexbase.new_attribute}.\footnote{%
+ Many thanks, again, to Hans Hagen for making this part
+ configurable!
+ }
+ The attribute identifiers are prefixed “\fileent{luaotfload@}” to
+ avoid name clashes.
- [0] https://github.com/persian-tex/simurgh
- [1] http://tex.stackexchange.com/a/132301/14066
+ --doc]]--
---doc]]--
+ local new_attribute = luatexbase.new_attribute
+ local the_attributes = luatexbase.attributes
---[[--14.12.2018disable characters
---characters = characters or { } --- should be created in basics-gen
---characters.data = nil
---local chardef = "luaotfload-characters"
---
---do
--- local setmetatableindex = function (t, f)
--- local mt = getmetatable (t)
--- if mt then
--- mt.__index = f
--- else
--- setmetatable (t, { __index = f })
--- end
--- end
---
--- --- there are some special tables for each field that provide access
--- --- to fields of the character table by means of a metatable
---
--- local mkcharspecial = function (characters, tablename, field)
---
--- local chardata = characters.data
---
--- if chardata then
--- local newspecial = { }
--- characters [tablename] = newspecial --> e.g. “characters.data.mirrors”
---
--- local idx = function (t, char)
--- local c = chardata [char]
--- if c then
--- local m = c [field] --> e.g. “mirror”
--- if m then
--- t [char] = m
--- return m
--- end
--- end
--- newspecial [char] = false
--- return char
--- end
---
--- setmetatableindex (newspecial, idx)
--- end
---
--- end
---
--- local mkcategories = function (characters) -- different from the others
---
--- local chardata = characters.data
--- local categories = characters.categories or { }
--- characters.categories = categories
---
--- setmetatable (categories, { __index = function (t, char)
--- if char then
--- local c = chardata [char]
--- c = c.category or char
--- t [char] = c
--- return c
--- end
--- end})
---
--- end
---
--- local load_failed = false
--- local chardata --> characters.data; loaded on demand
---
--- local load_chardef = function ()
---
--- logreport ("both", 1, "aux", "Loading character metadata from %s.", chardef)
--- chardata = dofile (kpse.find_file (chardef, "lua"))
---
--- if chardata == nil then
--- logreport ("both", 0, "aux",
--- "Could not load %s; continuing with empty character table.",
--- chardef)
--- chardata = { }
--- load_failed = true
--- end
---
--- characters = { } --- nuke metatable
--- characters.data = chardata
--- characters.classifiers = chardata.classifiers
--- chardata.classifiers = nil
---
--- --- institute some of the functionality from char-ini.lua
---
--- mkcharspecial (characters, "mirrors", "mirror")
--- mkcharspecial (characters, "directions", "direction")
--- mkcharspecial (characters, "textclasses", "textclass")
--- mkcategories (characters)
---
--- end
---
--- local charindex = function (t, k)
--- if chardata == nil and load_failed ~= true then
--- load_chardef ()
--- end
---
--- return rawget (characters, k)
--- end
---
--- setmetatableindex (characters, charindex)
---
---end
---]] --14.12.2018disable characters
-
-local init_main = function ()
+ local context_environment = luaotfload.fontloader
+ context_environment.attributes = {
+ private = function (name)
+ local attr = "luaotfload@" .. name --- used to be: “otfl@”
+ local number = the_attributes[attr]
+ if not number then number = new_attribute(attr) end
+ return number
+ end
+ }
--[[doc--
@@ -473,6 +269,20 @@ local init_main = function ()
local load_fontloader_module = luaotfload.loaders.fontloader
local ignore_module = luaotfload.loaders.ignore
+ load_fontloader_module "basics-gen"
+
+ if early_hook then early_hook() end
+
+ --[[doc--
+
+ The font loader requires that the attribute with index zero be
+ zero. We happily oblige.
+ (Cf. \fileent{luatex-fonts-nod.lua}.)
+
+ --doc]]--
+
+ tex.attribute[0] = 0
+
--[[doc--
Now that things are sorted out we can finally load the
@@ -574,14 +384,14 @@ local init_main = function ()
logreport ("log", 0, "init",
"Loading fontloader from absolute path “%s”.",
fontloader)
- local _void = require (fontloader)
+ local _void = assert (loadfile (fontloader, nil, context_environment)) ()
elseif kpsefind_file (fontloader) then
local path = kpsefind_file (fontloader)
logreport ("log", 0, "init",
"Loading fontloader “%s” from kpse-resolved path “%s”.",
fontloader, path)
- local _void = require (path)
+ local _void = assert (loadfile (path, nil, context_environment)) ()
elseif kpsefind_file (("fontloader-%s.lua"):format(fontloader)) then
logreport ("log", 0, "init",
@@ -605,43 +415,12 @@ local init_main = function ()
logreport ("log", 0, "init",
"Context OpenType loader version “%s”",
fonts.handlers.otf.version)
+ callback.register = trapped_register
+ nodes = context_environment.nodes
+ -- setmetatable(context_environment, nil) -- Would be nice, might break the
+ -- fontloader
end --- [init_main]
-local init_cleanup = function (store)
- --- reinstate all the stuff we had to move out of the way to
- --- accomodate the loader
-
- --[[doc--
-
- Here we adjust the globals created during font loader
- initialization. If the second argument to
- \luafunction{pop_namespaces()} is \verb|true| this will restore the
- state of \luafunction{_G}, eliminating every global generated since
- the last call to \luafunction{push_namespaces()}. At the moment we
- see no reason to do this, and since the font loader is considered
- an essential part of \identifier{luatex} as well as a very well
- organized piece of code, we happily concede it the right to add to
- \luafunction{_G} if needed.
-
- --doc]]--
-
- pop_namespaces (store.our_environment,
- false,
- store.context_environment)
-
- --[[doc--
-
- \subsection{Callbacks}
- After the fontloader is ready we can restore the callback trap
- from \identifier{luatexbase}.
-
- --doc]]--
-
- logreport ("log", 4, "init",
- "Restoring original callback.register().")
- callback.register = store.trapped_register
-end --- [init_cleanup]
-
local init_post_install_callbacks = function ()
--[[doc--
@@ -654,7 +433,7 @@ local init_post_install_callbacks = function ()
--doc]]--
-- MK Pass current text direction to simple_font_handler
- local handler = nodes.simple_font_handler
+ local handler = luaotfload.fontloader.nodes.simple_font_handler
local callback = function(head, groupcode, _, _, direction)
if not direction then
direction = tex.get'textdir'
@@ -774,20 +553,14 @@ local init_post = function ()
return n
end --- [init_post]
-return {
- early = init_early,
- main = function (store)
- local starttime = os.gettimeofday ()
- store.our_environment, store.context_environment = init_adapt ()
- init_main ()
- init_cleanup (store)
- logreport ("both", 1, "init",
- "fontloader loaded in %0.3f seconds",
- os.gettimeofday() - starttime)
- local n = init_post ()
- logreport ("both", 5, "init", "post hook terminated, %d actions performed", n)
- return true
- end
-}
-
+return function (early_hook)
+ local starttime = os.gettimeofday ()
+ init_main (early_hook)
+ logreport ("both", 1, "init",
+ "fontloader loaded in %0.3f seconds",
+ os.gettimeofday() - starttime)
+ local n = init_post ()
+ logreport ("both", 5, "init", "post hook terminated, %d actions performed", n)
+ return true
+end
-- vim:tw=79:sw=2:ts=2:expandtab
diff --git a/texmf/tex/latex-dev/luaotfload/luaotfload-main.lua b/texmf/tex/latex-dev/luaotfload/luaotfload-main.lua
index 970e020..10e31ae 100644
--- a/texmf/tex/latex-dev/luaotfload/luaotfload-main.lua
+++ b/texmf/tex/latex-dev/luaotfload/luaotfload-main.lua
@@ -142,12 +142,12 @@ local timing_info = {
t_init = { },
}
-local make_loader = function (prefix)
+local make_loader = function (prefix, load_helper)
return function (name)
local t_0 = osgettimeofday ()
local modname = make_loader_name (prefix, name)
--- We don’t want the stack info from inside, so just pcall().
- local ok, data = pcall (require, modname)
+ local ok, data = pcall (load_helper or require, modname)
local t_end = osgettimeofday ()
timing_info.t_load [name] = t_end - t_0
if not ok then
@@ -190,6 +190,16 @@ local dummy_loader = function (name)
name)
end
+local context_environment = setmetatable({}, {__index = _G})
+luaotfload.fontloader = context_environment
+local function context_isolated_load(name)
+ local fullname = kpse.find_file(name, 'lua')
+ if not fullname then
+ error(string.format('Fontloader module "%s" could not be found.', name))
+ end
+ return assert(loadfile(fullname, nil, context_environment))(name)
+end
+
local context_loader = function (name, path)
luaotfload.log.report ("log", 3, "load",
"Loading module “%s” from Context.",
@@ -209,7 +219,7 @@ local context_loader = function (name, path)
path)
end
end
- local ret = require (modpath)
+ local ret = context_isolated_load (modpath)
local t_end = osgettimeofday ()
timing_info.t_load [name] = t_end - t_0
@@ -228,7 +238,7 @@ local install_loaders = function ()
local loaders = { }
local loadmodule = make_loader "luaotfload"
loaders.luaotfload = loadmodule
- loaders.fontloader = make_loader "fontloader"
+ loaders.fontloader = make_loader ("fontloader", context_isolated_load)
loaders.context = context_loader
loaders.ignore = dummy_loader
----loaders.plaintex = make_loader "luatex" --=> for Luatex-Plain
@@ -275,15 +285,13 @@ luaotfload.main = function ()
local starttime = osgettimeofday ()
local init = loadmodule "init" --- fontloader initialization
- local store = init.early () --- injects the log module too
- local logreport = luaotfload.log.report
+ init (function ()
- initialize "parsers" --- fonts.conf and syntax
- initialize "configuration" --- configuration options
+ initialize "parsers" --- fonts.conf and syntax
+ initialize "configuration" --- configuration options
+ end)
- if not init.main (store) then
- logreport ("log", 0, "load", "Main fontloader initialization failed.")
- end
+ local logreport = luaotfload.log.report
initialize "loaders" --- Font loading; callbacks
initialize "database" --- Font management.
diff --git a/texmf/tex/latex-dev/luaotfload/luaotfload-resolvers.lua b/texmf/tex/latex-dev/luaotfload/luaotfload-resolvers.lua
index 1cc5fdc..9ed16aa 100644
--- a/texmf/tex/latex-dev/luaotfload/luaotfload-resolvers.lua
+++ b/texmf/tex/latex-dev/luaotfload/luaotfload-resolvers.lua
@@ -148,11 +148,12 @@ end
local tex_formats = { "tfm", "ofm" }
+local resolvers_findfile = luaotfload.fontloader.resolvers.findfile
local resolve_tex_format = function (specification)
local name = specification.name
for i=1, #tex_formats do
local format = tex_formats [i]
- local resolved = resolvers.findfile(name, format)
+ local resolved = resolvers_findfile(name, format)
if resolved then
return resolved, format
end
More information about the latex3-commits
mailing list