Xref with object number greater than trailer's size value
Hello,
a client sent to us a PDF with a strange xref table. Here is what it looks like:
xref
0 55
%% standart xref entries
200001 5
0000052507 00000 n
0000052793 00000 n
0000053079 00000 n
0000053365 00000 n
0000053727 00000 n
trailer << /Size 55 /Root 54 0 R /Info 53 0 R >>
startxref
54691
%%EOF
Those extra five objects are well formed link annotations. According to the standart, I should ignore those objects but all the tools I used to inspect the document found no problem in it.
So what should I do: concider /Size as the upper limit for object numbering in the document, or reach every reachable object, no matter what its object number is ?
It looks like some tool is applied to add those link annotations after the document is created and is quite lazy in its indirect object management: It seems to assume that by choosing a high enough object number (>200000) there wont be any collisions, and that it can simply insert the indirect objects (probably pregenerated and available as a blob with some placeholders to replace) somewhere before the xref table and an appropriate xref section just before the trailer, otherwise ignore the document, and everything is ok.
This, of course, is a mere assumption based on the few facts presented.
But if that is the case, the originator of those PDFs should hope he never substantially has to change the process of creating the source documents as such a tool will fail miserably with many documents nowerdays.
Furthermore you should inform the originator of the documents and tell him that his documents are broken in a way that might make post-processing break them utterly.
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Revision: 12552
Revision: 12552
Author: [email protected]
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DataGroup/addItemRendererToDisplayList() now respects the overlay.
QE notes:
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Bugs: sdk-24052
Reviewer:
Tests run: DataGroup, List
Is noteworthy for integration: no
Ticket Links:
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