[pdftex] pdftex-pdfcrypt update

[Hans Hagen]

At 01:18 PM 3/29/01 +0100, Heiko Oberdiek wrote:
>At 11:27 29.03.2001 +0200, Hans Hagen wrote:
>>>\immediate\pdfobj{%
>>>  <<%
>>>    /Type /DummyTest%
>>>    /TestString (FOO BAR)%
>>>    /Length 11%
>>>  >>%
>>>  stream%
>>>  HELLO WORLDendstream%
>>>}
>>
>>Well, i would not use such construct, even if it's permitted. The (proper)
>>alternative is: 
>>
>>\immediate\pdfobj stream attr
>>  {/Type /DummyTest /TestString (FOO BAR)}
>>  {HELLO WORLD}
>
>I did not use this syntax in thumbpdf, but the first
>form, because of:
>
>* Space: pdfTeX inserts a lot of spaces, that are not needed,
>  writing the stream directly can be done more compact.

there are some rule with regards to stream/endstream placement

also, the overhead is minimal compared to teh already large overhead of any
object / annot (or tex overhead in general since tex does kerning)

>* Compression: compression factor can be set independent
>  for the thumbnails.

that can still be done this way 

>* Speed: pdfTeX does not need to compress the object stream.

neglectable compared to macro expansion -) 

Hans


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