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Make XRef_indexObjects more robust against bad PDF files (issue 5752)

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This patch improves the detection of `xref` in files where it is followed by an arbitrary whitespace character (not just a line-breaking char).
It also adds a check for missing whitespace, e.g. `1 0 obj<<`, to speed up `readToken` for the PDF file in the referenced issue.
Finally, the patch also replaces a bunch of magic numbers with suitably named constants.

Fixes 5752.

Also improves 6243, but there are still issues.
This commit is contained in:
Jonas Jenwald 2015-08-21 16:57:08 +02:00
parent 23cb01c8af
commit 56a43a3181
3 changed files with 22 additions and 5 deletions
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test/pdfs/issue5752.pdf.link Normal file
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http://web.archive.org/web/20150821144004/http://222.247.54.152/Fulltext/qkyxlcyjy200504007.pdf