Hi all,
I'm currently working on a map viewer application that uses GDAL for processing
geo-referenced map images. Up till now I've been successfully using the
poppler library for PDF support, but am currently trying to shift to the
podofo/poppler hybrid approach (podofo library with poppler pdftoppm utility)
to work around poppler's GPL licence restrictions.
I have a collection of sample map PDF documents generated by ESRI ArcMap 10
(different documents from different releases in the 10.x release family), which
I could successfully process with GDAL/poppler, but most of which fail to load
with GDAL/podofo. The document loading also fails with the stand-alone podofo
pdftoppm utility, both with a version that I've built from podofo 0.9.6 source
and with the 0.9.3 version installed onto my ubuntu xenial machine from the APT
package repository.
The typical error message is as follows:
Error: An error 5 ocurred during uncompressing the pdf file.
PoDoFo encounter an error. Error: 5 ePdfError_UnexpectedEOF
Error Description: End of file was reached unxexpectedly.
Callstack:
#0 Error Source:
/build/libpodofo-NltoF1/libpodofo-0.9.3/src/base/PdfParser.cpp:226
Information: Unable to load objects from file.
#1 Error Source:
/build/libpodofo-NltoF1/libpodofo-0.9.3/src/base/PdfParser.cpp:334
Information: Unable to load xref entries.
#2 Error Source:
/build/libpodofo-NltoF1/libpodofo-0.9.3/src/base/PdfParser.cpp:738
#3 Error Source:
/build/libpodofo-NltoF1/libpodofo-0.9.3/src/base/PdfTokenizer.cpp:339
which seems to indicate an invalid xref table.
I don't think this is a podofo bug as such, as various online pdf validators
I've tried also flag the documents as problematic, but several other bits of
pdf software I've tried (notably the poppler library utilities) seem to treat
it as a non-fatal recoverable error.
Has anyone else come across this and come up with a work-around or fix?
Example problem file to be found at
https://www.dropbox.com/s/khlzgz8o2gxq89y/6090_harvest.pdf?dl=0
thanks
Richard.
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