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https://issues.apache.org/jira/browse/PDFBOX-5283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17419367#comment-17419367
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Michael Klink commented on PDFBOX-5283:
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[~msahyoun], sorry if I formulated that too hard. I also do understand that
creating a really strict PDF library in a world where PDF viewers try to
display even severely broken PDFs without a warning won't get you many users.
Nonetheless the points I made do stand.
The problem with a strict mode is that it really needs to be a programming
principle throughout the library, not merely in a few selected locations. I.e.
one must never assume that existing entries of some structure loaded from some
PDF are as they should be, one always has to test etc.
And unfortunately the requirements are a bit of moving targets if one takes a
look at the corrections to ISO 32000-2:2020 already decided upon...
So I'm afraid a truly good strict mode is not really feasible. (And before you
ask, no, I'm not aware of a really strict PDF library...)
> No Content - xRef / Obj Parsing
> -------------------------------
>
> Key: PDFBOX-5283
> URL: https://issues.apache.org/jira/browse/PDFBOX-5283
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing
> Affects Versions: 2.0.24, 3.0.0 PDFBox
> Reporter: Oliver Schmidtmer
> Priority: Major
> Attachments: Lieferschein_110300.pdf
>
>
> There seems to be an issue with xRef / object reading when parsing the
> attached pdf.
> The PDF itself has for example two objects with the ref "8 0 R":
> One at position 1967 with a "/Content" entry.
> One at position 7782 without a "/Content" entry.
> Both are referenced in the XRef Table, so there seems to be something off.
> Probably Acrobat, etc. are using the first object, while PDFBox is using the
> second one.
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