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Remove superfluous '%' character in the comment with binary bytes.
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Instead of having fz_new_XXXX(ctx, type, ...) macros that call
fz_new_XXXX_of_size etc, use fz_new_derived_...
Clearer naming, and doesn't clash with fz_new_document_writer.
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Moves document_writers into the same style as
fz_new_{image,document,page} etc.
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Rename fz_write to fz_write_data.
Rename fz_write_buffer_* and fz_buffer_printf to fz_append_*.
Be consistent in naming:
fz_write_* calls write to fz_output.
fz_append_* calls append to fz_buffer.
Update documentation.
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It's only used to 'fix' duff indirect references when cleaning PDF
files. Writing general values into dictionaries should be done by key,
not by internal index.
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Move the definition of the structure contents into new fitz-imp.h
file. Make all code outside of fitz access the buffer through the
defined API.
Add a convenience API for people that want to get buffers as
null terminated C strings.
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Firstly, we avoid compressing streams if they get bigger.
Secondly, we ensure that we always update the Length field.
Seen as part of the investigation into bug 697092, though not the
actual cause. Thanks to Tor for the latter part of the fix.
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Closing a device or writer may throw exceptions, but much of the
foreign language bindings (JNI and JS) depend on drop to never throw
an exception (exceptions in finalizers are bad).
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The mark & sweep pass of garbage collection, and resolving indirect objects when grafting objects
was following the full chain of indirect references. In the unusual case where a numbered object
is itself only an indirect reference to another object, this intermediate numbered object would
be missed both when marking for garbage collection, and when copying objects for grafting.
Add a function to resolve only one step for these two uses.
The following is an example of a file that would break during garbage collection if we
follow full indirect reference chains:
%PDF-1.3
1 0 obj
<</Type/Catalog /Foo[2 0 R 3 0 R]>>
endobj
2 0 obj
4 0 R
endobj
3 0 obj
5 0 R
endobj
4 0 obj
<</Length 1>>
stream
A
endstream
endobj
5 0 obj
<</Length 1>>
stream
B
endstream
endobj
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The generation number is only needed for decryption, and is assumed
to be zero or irrelevant for all other uses.
Store the original object number and generation in the xref slot, so
that we can decrypt them even when the objects have been renumbered,
without needing to pass the original object number around through
the stream loading APIs.
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Allows us to remove the out parameter 'transform' from fz_begin_page.
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This silences the many warnings we get when building for x64
in windows.
This does not address any of the warnings we get in thirdparty
libraries - in particular harfbuzz. These look (at a quick
glance) harmless though.
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Makes it easier to chain function calls.
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Broken due to refactoring. Thanks to Michael for spotting this.
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Allow us to write a document to an fz_output as opposed to just a
filename.
We cannot write digital signatures in this method though. Will
ponder that in a later commit.
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If a file cannot be saved incrementally, then don't accept that
as an option. In practise this means if someone asks to save
a file incrementally, and it was repaired, or it uses encryption
then throw an error.
Add a new function to ask if it's safe to save a file incrementally,
and use that in the appropriate places.
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Use comma-separated list of flags and key/value pairs, for
example: "linearize,resolution=72,colorspace=gray"
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The handling of not-decompressing images/fonts was geared towards
pdfclean usage; but now that we can create new PDF files, it makes
more sense to ask for images and fonts to be compressed, rather than
asking for them not to be decompressed with quirky interaction with
the 'expand' and 'deflate' flags.
If -f or -i are set, we will never decompress images, and we will
compress them if they are uncompressed.
If -d is set, we will first decompress all streams (module -f or -i).
If -z is set, we will then compress all uncompressed streams.
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If we rewrite a page content stream, and then drop that entire page
we shouldn't leak the buffer.
Or to put it another way, when we change the obj for an xref entry,
ditch the cached stm_buf.
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When printing a PDF object to a file, if it was a name, then we'd
output without a required \n. For example:
10 0 obj
/SomeNameOrOtherendobj
This would trip gs up.
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