You can track back through the XREF chain to make sure the %%EOF you
found is correct.
On 3/15/2021 1:40 PM, Tim Allison wrote:
All,
Is there an easy-ish/programmatic way to extract earlier versions of
a PDF in PDFBox if there are incremental updates. I found [1], and
that's easy enough, but I worry about %%EOF that might show up in
uncompressed streams or comments. It looks like you actually have to
do a full parse to make sure that %%EOF means (or meant) %%EOF. :D
I'm happy enough with the simple version and attempting to parse the
document as a worst-case scenario.
Thank you.
Best,
Tim
[1]
https://stackoverflow.com/questions/49382535/how-to-revert-incremental-update-in-pdf-using-pdfbox
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