[Swftools-common] libpoppeler

[Andreas Haufler \(scireum\)]

Hi Matthias,

 

I was debugging why sometimes an error like „ Illegal entry in bfchar block in ToUnicode CMap” occurs when reading valid PDFs. I think I spotted the problem in CharCodeToUnicode.cc in line 245. There is a check that the first token is exactly 2 digits long, however: 0022  is also valid…

 

While debugging, I learned that there is a fork of xpdf called libpoppeler which is intended for programs using xpdf as library. Since libpoppeler is maintained and updated as xpdf is, pdf2swf would benefit from using this library instead of managing an own “fork” of xpdf. So I wonder if there are deep modifications within the used xpdf sources or if they could possibly be replaced by libpoppeler (?)

 

Otherwise it would be kind to integrate the current version of CharCodeToUnicode.cc from xpdf or libpoppeler to pdf2swf since it seems to handle Unicode-stuff better when it comes to multi-char mappings like ligatures (fl, fi, etc.). Then a patch could be added to remove the bfchar warnings (this problem persists in the current xpdf-version).

 

Best regards

Andy

 

freundliche Grüße
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i.A. Andreas Haufler
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