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Previously attributes that were copied with their node used string sharing,
but standalone attributes that were copied using xml_node::*_copy(xml_attribute)
were not.
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Instead of reallocating the string for every tree level just do two passes
over the ancestor chain.
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as_utf8_end was used with std::string, where writing an extra zero-terminating
character should *probably* always work (at least if size is positive) but is
not ideal.
The only place that needed to zero-terminate was convert_path_heap.
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When parsing XPath variables, we need to perform a heap allocation; if it
fails, an xpath_exception instead of bad_alloc used to be thrown.
Now we throw the exception of a correct type so that xpath_exception means
'parsing error'.
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Previously we omitted extra whitespace for single PCDATA/CDATA children, but in
mixed content there was extra indentation before/after text nodes.
One of the problems with that is that the text that you saved is not exactly
the same as the parsing result using default flags (parse_trim_pcdata helps).
Another problem is that parse-format cycles do not have a fixed point for mixed
content - the result expands indefinitely. Some XML libraries, like Python
minidom, have the same issue, but this is definitely a problem.
Pretty-printing mixed content is hard. It seems that the only other sensible
choice is to switch mixed content nodes to raw formatting. In a way the code in
this change is a weaker version of that - it removes indentation around text
nodes but still keeps it around element siblings/children.
Thus we can switch to mixed-raw formatting at some point later, which will be
a superset of the current behavior.
To do this we have to either switch at the first text node (.NET XmlDocument
does that), or scan the children of each element for a possible text node and
switch before we output the first child.
The former behavior seems non-intuitive (and a bit broken); unfortunately, the
latter behavior can cost up to 20% of the output time for trees *without* mixed
content.
Fixes #13.
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Since in compact mode we only ever have a guaranteed alignment on 4, the pages
are limited to 256k even if pointers are 64 bit.
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This prevents malformed PI value from breaking the document structure.
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Since all string allocations are pointer-aligned to avoid aligning more
frequent node allocations, we can rely on that in string encoding.
Encoding page offset and block size in sizeof(void*) units increases the
maximum memory page size from 64k to 256k on 32-bit and 512k on 64-bit
platforms.
Fixes #35.
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Also change the error code to status_io_error
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The implementations generated a string with an internal null terminator; this
went unnoticed since unit test string verification did not perform string
equality check properly (it compared XPath string result as a C-string, thus
stopping at the first null terminator).
Fixes #36.
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This prevents malformed input XML with very deeply recursive DOCTYPE sections
from crashing the parser.
Fixes #29.
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Also fix the float/double member order in the header file.
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Make float/double round-trip
This change also adds xml_text::set and xml_attribute::set_value overloads for float so that float is only printed using just enough digits to represent float, instead of enough digits to represent double.
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It's sufficient to define PUGIXML_HEADER_ONLY anywhere now, source is included
automatically.
This is a second attempt; this time it includes a workaround for QMake bug
that caused it to generate incorrect Makefile.
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Make float/double round-trip
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Unfortunately, standard headers on MinGW32 insist on undefining off64_t
and _wfopen extensions if __STRICT_ANSI__ is true (e.g. C++11 mode). This
leads to compilation errors since b7a1fec started to use _wfopen in strict
mode. That change erroneously checked GCC version - however, the version
itself is irrelevant; the actual criteria is whether mingw64 runtime is
used.
off64_t is not useful on MinGW32 since we only need it to open large files
on 64-bit platforms; unfortunately, the lack of _wfopen means we won't be
able to support wide-char paths on Windows for MinGW32.
Fixes #24.
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Since MinGW 4.5 does not define these functions if __STRICT_ANSI__ is defined
(in case of _wfopen it defines it inconsistently between stdio.h and wchar.h)
use the baseline functions for MinGW 4.5 and earlier.
Fixes #23.
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Since copying no longer relies on child insertion we have to also reserve
space in the hash table for the allocator so that pointer manipulations are
guaranteed to succeed.
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node_copy_string relied on the fact that target node had an empty name and
value. Normally this is a safe assumption (and a good one to make since it
makes copying faster), however it was not checked and there was one case when
it did not hold.
Since we're reusing the logic for inserting nodes, newly inserted declaration
nodes had the name set automatically to xml, which in our case violates the
assumption and is counter-productive since we'll override the name right after
setting it.
For now the best solution is to do the same insertion manually - that results
in some code duplication that we can refactor later (same logic is partially
shared by _move variants anyway so on a level duplicating is not that bad).
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Add allow_insert_attribute (similar to allow_insert_child).
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Remove redundant this-> from type() call (argument used to be called type,
but it's now type_).
Use _root member directly when possible instead of calling internal_object.
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This will allow us to implement nodeset_eval_last evaluation mode if necessary
without relying on a fragile boolean argument.
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Extract end of string to rend and add comments to translate_table.
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Right now remove_node is only used in contexts where parent is reset after
removing but this might be important in the future.
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Since depth is unsigned this is actually well-defined but it's better to not
have the underflow anyway.
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This is more for consistency with the surrounding code than for performance.
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This should completely eliminate the confusion between load and load_file.
Of course, for compatibility reasons we have to preserve the old variant -
it will be deprecated in a future version and subsequently removed.
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Since we no longer have a name/value pair in nodes we need one less bit to
represent allocated flags. This reduces the page overhead by 32 bytes.
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Previously push_back implementation was too big to inline; now the common case
(no realloc) is small and realloc variant is explicitly marked as no-inline.
This is similar to xml_allocator::allocate_memory/allocate_memory_oob and
makes some XPath queries 5% faster.
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In some cases constant overhead on step evaluation is important - i.e. for
queries that evaluate a simple step in a predicate expression. Eliminating
a redundant function call thus can prove worthwhile.
This change makes some queries (e.g. //*[not(*)]) 4% faster.
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Clang and gcc seem to treat string literals differently...
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Since page size can be customized let's do a special validation check for
compact encoding. Right now it's redundant since page size is limited by
64k in alloc_string, but that may change in the future.
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This allows us to add pi value to restore target support for PI nodes without
increasing the memory usage for other nodes.
Right now the PI node has a separate header that's used for allocated bit;
this allows us to reduce header bitcount in the future.
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