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Move most of the methods called from qpdf.cc after argument parsing into QPDFJob. In this increment, enough QPDFJob API has been added to handle the branch of QPDFJob::run() that creates output with an appropriate division between qpdf.cc and QPDFJob. There are temporary bits of code to enable everything to compile and pass the test suite, including some duplication and hard-coded values.
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Add methods isNameAndEquals, isDictionaryOfType, isStreamOfType
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* Handle error conditions that occur when using the object handle interfaces. In the past, some exceptions were not correctly converted to errors or warnings. * Add more detailed information to qpdf-c.h * Make it possible to work more explicitly with uninitialized objects
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It was exercised in the pdf-linearize example but not in qpdf-ctest.
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When adding a QPDFObjectHandle to an array or dictionary, if possible, check if the new object belongs to the same QPDF. This makes it much easier to find incorrect code than waiting for the situation to be detected when the file is written.
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This was originally not public because I wanted to get rid fo the pages cache, but I recently realized there were deep reasons not to do that, and the author of pikepdf wanted this, so I decided to make it public.
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When copying a page from the original file to the output in --pages, don't alter the fields or annotations for the first copy of each page.
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Also improve behavior around direct vs. indirect resources.
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If not found in the field hierarchy, /Q and /DA are supposed to be looked up in the document-level form dictionary. /DR is supposed to only come from the document dictionary.
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I thought /EFF was supposed to be used as a default for decrypting embedded file streams, but actually it's supposed to be advice to a conforming writer about handling new ones. This makes sense since the findAttachmentStreams code, which is not actually needed, was never right.
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When removing unreferenced resources, notice if a page (recursively) contains a form XObject with unreferenced resources, and count any such resources as referenced by the page.