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TODO: JSON notes

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Jay Berkenbilt 2022-05-01 19:40:28 -04:00
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@ -41,6 +41,26 @@ Output JSON v2
Remember typo: search for "Typo" In QPDFJob::doJSONEncrypt.
Remember to test interaction between generators and schemas.
Should I have allowed array and object generators? Or maybe just
string generators for stream data?
When switching to generators for output, it's going to be very
important not to break the logic around having things that look at all
objects going first. Right now, there are good tests for it -- if you
either comment out pushInheritedAttributesToPage or do something that
postpones serializing the objects from allObjects (or even getting
them), you get test failures either way. However, if we were to
blindly overwrite test files, we might accidentally lose this. We will
have to try to get most of the logic working before trying to use
generators. Or maybe we shouldn't use generators at all for the
objects and only use it for the stream data. Or maybe we can use
generators but write it out early by exposing the depth() parameter.
That might actually the safest way to do it. But that will be hard
with schemas. Another thing might be to not combine serializing with
other kinds of metadata.
Output JSON v2 will contain enough information to completely recreate
a PDF file. In other words, qpdf will have full, bidirectional,
lossless json serialization/deserialization of PDF.