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More consistent with the rest of the code.
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Ignore invalid page references in outlines.
This was shown by a file that had [null 0 0 1] as a link dest.
Attempting to parse that threw an error, which caused the whole
outline load to fail.
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As per Adobe's recommendation:
https://helpx.adobe.com/acrobat/kb/link-html-pdf-page-acrobat.html
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Correctly transformed target coordinates for PDF.
Target coordinates for EPUB and HTML.
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All link destinations should be URIs, and a document specific function
can be called to resolve them to actual page numbers.
Outlines have cached page numbers as well as string URIs.
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As fz_drop_*()/fz_free() all must handle NULL.
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Use a flag in the pdf_annot struct instead.
Don't pass pdf_document to annotation edit functions.
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Put them in the PDF name space and separate words with underscores.
Remove redundant namespace prefixes in java constants.
Device.FLAG_MASK rather than Device.FZ_DEVFLAG_MASK.
Use namespace for PDF annotation flag enum.
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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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We want to turn pdf_page into a thin wrapper around a pdf_obj, so that
any updates to the underlying PDF objects will be reflected without
having to reload the pdf_page.
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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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Caused by a mismatch in the annotation creation/loading code.
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Currently, every PDF name is allocated in a pdf_obj structure, and
comparisons are done using strcmp. Given that we can predict most
of the PDF names we'll use in a given file, this seems wasteful.
The pdf_obj type is opaque outside the pdf-object.c file, so we can
abuse it slightly without anyone outside knowing.
We collect a sorted list of names used in PDF (resources/pdf/names.txt),
and we add a utility (namedump) that preprocesses this into 2 header
files.
The first (include/mupdf/pdf/pdf-names-table.h, included as part of
include/mupdf/pdf/object.h), defines a set of "PDF_NAME_xxxx"
entries. These are pdf_obj *'s that callers can use to mean "A PDF
object that means literal name 'xxxx'"
The second (source/pdf/pdf-name-impl.h) is a C array of names.
We therefore update the code so that rather than passing "xxxx" to
functions (such as pdf_dict_gets(...)) we now pass PDF_NAME_xxxx (to
pdf_dict_get(...)). This is a fairly natural (if widespread) change.
The pdf_dict_getp (and sibling) functions that take a path (e.g.
"foo/bar/baz") are therefore supplemented with equivalents that
take a list (pdf_dict_getl(... , PDF_NAME_foo, PDF_NAME_bar,
PDF_NAME_baz, NULL)).
The actual implementation of this relies on the fact that small
pointer values are never valid values. For a given pdf_obj *p,
if NULL < (intptr_t)p < PDF_NAME__LIMIT then p is a literal
entry in the name table.
This enables us to do fast pointer compares and to skip expensive
strcmps.
Also, bring "null", "true" and "false" into the same style as PDF names.
Rather than using full pdf_obj structures for null/true/false, use
special pointer values just above the PDF_NAME_ table. This saves
memory and makes comparisons easier.
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pdf_parse_file_spec sometimes extracts the wrong path from a FileSpec:
E.g. the /DOS path should never be returned under Unix systems, neither
should be the old /Mac paths.
For consistency, this patch also converts filesystem paths under
Windows into a format applications will expect (e.g. from "/C/path/..."
to "C:\path\...").
Finally, pdf_parse_file_spec is exposed to callers (SumatraPDF requires
that for manually processing FZ_ANNOT_FILEATTACHMENT and embedded files).
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Purge several embedded contexts:
Remove embedded context in fz_output.
Remove embedded context in fz_stream.
Remove embedded context in fz_device.
Remove fz_rebind_stream (since it is no longer necessary).
Remove embedded context in svg_device.
Remove embedded context in XML parser.
Add ctx argument to fz_document functions.
Remove embedded context in fz_document.
Remove embedded context in pdf_document.
Remove embedded context in pdf_obj.
Make fz_page independent of fz_document in the interface.
We shouldn't need to pass the document to all functions handling a page.
If a page is tied to the source document, it's redundant; otherwise it's
just pointless.
Fix reference counting oddity in fz_new_image_from_pixmap.
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Rename fz_close to fz_drop_stream.
Rename fz_close_archive to fz_drop_archive.
Rename fz_close_output to fz_drop_output.
Rename fz_free_* to fz_drop_*.
Rename pdf_free_* to pdf_drop_*.
Rename xps_free_* to xps_drop_*.
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See bug 693314 (file Z23-04.pdf) for an example file.
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New routine to filter the content streams for pages, xobjects,
type3 charprocs, patterns etc. The filtered streams are guaranteed
to be properly matched with q/Q's, and to not have changed the top
level ctm. Additionally we remove (some) repeated settings of
colors etc. This filtering can be extended to be smarter later.
The idea of this is to both repair after editing, and to leave the
streams in a form that can be easily appended to.
This is preparatory to work on Bates numbering and Watermarking.
Currently the streams produced are uncompressed.
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This feature is being implemented mostly for the purpose of permitting
the addition to a page of invisible signatures.
Also change pdf_create_annot to make freshly created annotations
printable by default.
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pdf_load_annots was leaving the tail pointer pointing at the
automatic variable head in the case of the page having no
annotations.
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This fixes bug 694755. Thank you to Michael Cadihac for the patch
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Zero and one-point case both lead to an empty rectangle, but the one-point case
needs expanding but wasn't because fz_expand_rect treats an empty rectangle
as a special case (as it should)
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* Destination names are a name and not a string
* Expose whether a /Launch action points to a path or a URI
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