febe4f0209
Now copying nodes or attributes does not copy names/values if the source strings are in a document buffer. As a result, several nodes can now share the same string in document buffer - to support this we 'taint' both source and destination with a special 'shared' bit. Tainting disables offset_debug() and fast-path document order comparison; it also prevents strcpy_insitu from reusing the document buffer memory for the copied node. The downsides include slower XPath queries in some (rare) cases and slightly higher memory consumption in some (rare) cases. XPath queries can execute slower if a lot of old nodes were copied to new nodes *and* a query only touches old nodes (so it used to benefit a lot from fast comparison path) *and* a query produces unsorted node sets that need to be sorted later (both are relatively rare). Higher memory consumption is possible if a lot of nodes were copied and all nodes (both new and old) have their contents modified 'in place' -- previously we could modify the old node in place and the new node required one allocation on copy, and now both nodes have to have their data allocated during modification. This should also be rare. On the bright side, in a lot of cases copying of string data can be avoided - this makes the copy much faster and the document now occupies less memory. For example, some uses of append_buffer are now actually slower compared to building up a document by copying a template from the same document and modifying the copy slightly. In one of the internal benchmarks copying is now 4x faster (the difference can be more dramatic with more string contents and less markup). git-svn-id: https://pugixml.googlecode.com/svn/trunk@1032 99668b35-9821-0410-8761-19e4c4f06640 |
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pugixml 
pugixml is a C++ XML processing library, which consists of a DOM-like interface with rich traversal/modification capabilities, an extremely fast XML parser which constructs the DOM tree from an XML file/buffer, and an XPath 1.0 implementation for complex data-driven tree queries. Full Unicode support is also available, with Unicode interface variants and conversions between different Unicode encodings (which happen automatically during parsing/saving).
pugixml is used by a lot of projects, both open-source and proprietary, for performance and easy-to-use interface.
Documentation
Documentation for the current release of pugixml is available on-line as two separate documents:
- Quick-start guide, that aims to provide enough information to start using the library;
- Complete reference manual, that describes all features of the library in detail.
You’re advised to start with the quick-start guide; however, many important library features are either not described in it at all or only mentioned briefly; if you require more information you should read the complete manual.
License
This library is available to anybody free of charge, under the terms of MIT License:
Copyright (c) 2006-2014 Arseny Kapoulkine
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.