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Other code depends on this and does not handle
a page pointer being NULL well.
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Several things irk me about passing values as const pointers:
* They can be NULL, which is not a valid value.
* They require explicit temporary variables for storage.
* They don't compose easily in a legible manner, requiring
weird pointer passing semantics where the variable being assigned
is hidden as an argument in the innermost function call.
* We can't change the value through the pointer, requiring yet more
local variables to hold copies of the input value.
In the device interface where we pass a matrix to a function, we often
find ourselves making a local copy of the matrix so we can concatenate
other transforms to it. This copying is a lot of unnecessary busywork
that I hope to eventually avoid by laying the groundwork with this
commit.
This is a rather large API change, so I apologize for the inconvenience,
but I hope the end result and gain in legibility will be worth the pain.
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This needs adding a fz_xml_doc type to hold the pool.
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A document handler normally only exposes a list of extensions and
mimetypes. Only formats that use some kind of extra detection mechnism
need to supply a recognize() callback, such as xps that can handle
.xps-files unpacked into a directory.
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To make it possible to avoid casting in most cases.
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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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Move this into the same style as fz_new_document and
fz_new_image.
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Non-destructively zero terminate a fz_buffer for use as a C string.
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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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This relieves all document formats from reimplementing opening a
fz_stream unless the format wants to do something more than just
opening the raw file.
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fz_parse_xml() assumes a null-terminated xml string.
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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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Use a macro to make fz_new_document nicer (akin to
fz_malloc_struct).
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svg: Implement graphics state stack.
svg: Use idmap for symbol and use elements.
svg: Put viewport and viewBox in state stack.
svg: Rebase to version 1.9 master.
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