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Lazily load MD5 and RC4 once in the life of the program. Only load the legacy provider if RC4 is actually being used.
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Avoid representing as PDF Doc encoding any string whose PDF Doc encoding representation starts with a UTF-16 or UTF-8 marker.
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From time to time, someone has a problem because their build is grabbing an old version of qpdf header files that are installed somewhere on their system. I am hoping this will put an end to that.
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These markers are being added for nested classes that are already marked with QPDF_DLL_CLASS. They don't make any different on Linux, but they matter on Windows.
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This was broken for cross-compilation and has probably been unnecessary for several years now. Also fix extraneous whitespace in related some tests.
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Replace operator== and operator!=, which were testing for the same underlying object, with isSameObjectAs. This change was motivated by the fact that pikepdf internally had its own operator== method for QPDFObjectHandle that did structural comparison. I backed out qpdf's operator== as a courtesy to pikepdf (in my own testing) but also because I think people might naturally assume that operator== does a structural comparison, and isSameObjectAs is clearer in its intent.
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Expose functions to the C API to create new loggers and to setLogger and getLogger for QPDF and QPDFJob.
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When a QPDF is destroyed, changing indirect objects to direct nulls makes them effectively disappear silently when they sneak into other places. Instead, we should treat this as an error. Adding a destroyed object type makes this possible.
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Add copy_if_fallback and explain how it differs from copy_if_shared.
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Also remove no-longer-needed #include
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This results in measurable performance improvements to packaged binary libqpdf distributions. QTC remains available for library users and is still selectively enabled in CI.
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When the schema wants a variable-length array, allow a single item as well as allowing an array.
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Remove any ambiguity around whether old or new value is being returned.