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https://github.com/RGBCube/serenity
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9d69c5d434
At first I tried implmenting the quirk from PDF 1.7 Appendix H, 3.4.4, "File Trailer": """Acrobat viewers require only that the %%EOF marker appear somewhere within the last 1024 bytes of the file."" This would've been like #22548 but at end-of-file instead of at start-of-file. This helped a bunch of files, but also broke a bunch of files that made more than 1024 bytes of stuff at the end, and it wouldn't have helped 0000059.pdf, which has over 40k of \0 bytes after the %%EOF. So just tolerate whitespace after the %%EOF line, and keep ignoring and arbitrary amount of other stuff after that like before. This helps: * 0000599.pdf One trailing \0 byte after %%EOF. Due to that byte, the is_linearized() check fails and we go down the non-linearized codepath. But with this fix, that code path succeeds. * 0000937.pdf Same. * 0000055.pdf Has one space followed by a \n after %%EOF * 0000059.pdf Has over 40kB of trailing \0 bytes The following files keep working with it: * 0000242.pdf 5586 bytes of trailing HTML * 0000336.pdf 5586 bytes of trailing HTML fragment * 0000136.pdf 2054 bytes of trailing space characters This one kind of only worked by accident before since it found the %%EOF block before the final %%EOF block. Maybe this is even an intentional XRefStm compat hack? Anyways, now it find the final block instead. * 0000327.pdf 11044 bytes of trailing HTML |
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| .. | ||
| Fonts | ||
| CMakeLists.txt | ||
| ColorSpace.cpp | ||
| ColorSpace.h | ||
| CommonNames.cpp | ||
| CommonNames.h | ||
| Document.cpp | ||
| Document.h | ||
| DocumentParser.cpp | ||
| DocumentParser.h | ||
| Encoding.cpp | ||
| Encoding.h | ||
| Encryption.cpp | ||
| Encryption.h | ||
| Error.h | ||
| Filter.cpp | ||
| Filter.h | ||
| Forward.h | ||
| Function.cpp | ||
| Function.h | ||
| Interpolation.cpp | ||
| Interpolation.h | ||
| Object.h | ||
| ObjectDerivatives.cpp | ||
| ObjectDerivatives.h | ||
| Operator.h | ||
| Page.cpp | ||
| Page.h | ||
| Parser.cpp | ||
| Parser.h | ||
| Reader.cpp | ||
| Reader.h | ||
| Reference.h | ||
| Renderer.cpp | ||
| Renderer.h | ||
| Value.cpp | ||
| Value.h | ||
| XRefTable.h | ||