mirror of https://github.com/AxioDL/tinyxml2.git
license and readme
This commit is contained in:
Lee Thomason (grinliz)
parent
2a1cd27732
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9c38d138ff
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/** @mainpage
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<h1> TinyXML-2 </h1>
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TinyXML is a simple, small, efficient, C++ XML parser that can be
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easily integrated into other programs.
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<h2> What it does. </h2>
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In brief, TinyXML parses an XML document, and builds from that a
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Document Object Model (DOM) that can be read, modified, and saved.
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XML stands for "eXtensible Markup Language." It is a general purpose
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human and machine readable markup language to describe arbitrary data.
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All those random file formats created to store application data can
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all be replaced with XML. One parser for everything.
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http://en.wikipedia.org/wiki/XML
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There are different ways to access and interact with XML data.
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TinyXML-2 uses a Document Object Model (DOM), meaning the XML data is parsed
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into a C++ objects that can be browsed and manipulated, and then
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written to disk or another output stream. You can also construct an XML document
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from scratch with C++ objects and write this to disk or another output
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stream. You can even use TinyXML-2 to stream XML programmatically from
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code without creating a document first.
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TinyXML-2 is designed to be easy and fast to learn. It is one header and
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one cpp file. Simply add these to your project and off you go.
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There is an example file - xmltest.cpp - to get you started.
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TinyXML-2 is released under the ZLib license,
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so you can use it in open source or commercial code. The details
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of the license are at the top of every source file.
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TinyXML-2 attempts to be a flexible parser, but with truly correct and
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compliant XML output. TinyXML-2 should compile on any reasonably C++
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compliant system. It does not rely on exceptions, RTTI, or the STL.
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<h2> What it doesn't do. </h2>
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TinyXML doesn't parse or use DTDs (Document Type Definitions) or XSLs
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(eXtensible Stylesheet Language.) There are other parsers out there
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that are much more fully
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featured. But they are also much bigger, take longer to set up in
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your project, have a higher learning curve, and often have a more
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restrictive license. If you are working with browsers or have more
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complete XML needs, TinyXML-2 is not the parser for you.
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<h2> TinyXML-1 vs. TinyXML-2 </h2>
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<h2> Tutorials. </h2>
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For the impatient, here is a tutorial to get you going. A great way to get started,
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but it is worth your time to read this (very short) manual completely.
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- @subpage tutorial0
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<h2> Code Status. </h2>
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TinyXML is mature, tested code. It is very stable. If you find
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bugs, please file a bug report on the sourceforge web site
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(www.sourceforge.net/projects/tinyxml). We'll get them straightened
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out as soon as possible.
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There are some areas of improvement; please check sourceforge if you are
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interested in working on TinyXML.
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<h2> Related Projects </h2>
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TinyXML projects you may find useful! (Descriptions provided by the projects.)
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<ul>
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<li> <b>TinyXPath</b> (http://tinyxpath.sourceforge.net). TinyXPath is a small footprint
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XPath syntax decoder, written in C++.</li>
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<li> <b>TinyXML++</b> (http://code.google.com/p/ticpp/). TinyXML++ is a completely new
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interface to TinyXML that uses MANY of the C++ strengths. Templates,
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exceptions, and much better error handling.</li>
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</ul>
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<h2> Features </h2>
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<h3> Using STL </h3>
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TinyXML can be compiled to use or not use STL. When using STL, TinyXML
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uses the std::string class, and fully supports std::istream, std::ostream,
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operator<<, and operator>>. Many API methods have both 'const char*' and
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'const std::string&' forms.
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When STL support is compiled out, no STL files are included whatsoever. All
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the string classes are implemented by TinyXML itself. API methods
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all use the 'const char*' form for input.
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Use the compile time #define:
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TIXML_USE_STL
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to compile one version or the other. This can be passed by the compiler,
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or set as the first line of "tinyxml.h".
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Note: If compiling the test code in Linux, setting the environment
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variable TINYXML_USE_STL=YES/NO will control STL compilation. In the
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Windows project file, STL and non STL targets are provided. In your project,
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It's probably easiest to add the line "#define TIXML_USE_STL" as the first
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line of tinyxml.h.
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<h3> UTF-8 </h3>
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TinyXML supports UTF-8 allowing to manipulate XML files in any language. TinyXML
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also supports "legacy mode" - the encoding used before UTF-8 support and
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probably best described as "extended ascii".
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Normally, TinyXML will try to detect the correct encoding and use it. However,
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by setting the value of TIXML_DEFAULT_ENCODING in the header file, TinyXML
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can be forced to always use one encoding.
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TinyXML will assume Legacy Mode until one of the following occurs:
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<ol>
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<li> If the non-standard but common "UTF-8 lead bytes" (0xef 0xbb 0xbf)
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begin the file or data stream, TinyXML will read it as UTF-8. </li>
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<li> If the declaration tag is read, and it has an encoding="UTF-8", then
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TinyXML will read it as UTF-8. </li>
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<li> If the declaration tag is read, and it has no encoding specified, then TinyXML will
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read it as UTF-8. </li>
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<li> If the declaration tag is read, and it has an encoding="something else", then TinyXML
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will read it as Legacy Mode. In legacy mode, TinyXML will work as it did before. It's
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not clear what that mode does exactly, but old content should keep working.</li>
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<li> Until one of the above criteria is met, TinyXML runs in Legacy Mode.</li>
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</ol>
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What happens if the encoding is incorrectly set or detected? TinyXML will try
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to read and pass through text seen as improperly encoded. You may get some strange results or
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mangled characters. You may want to force TinyXML to the correct mode.
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You may force TinyXML to Legacy Mode by using LoadFile( TIXML_ENCODING_LEGACY ) or
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LoadFile( filename, TIXML_ENCODING_LEGACY ). You may force it to use legacy mode all
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the time by setting TIXML_DEFAULT_ENCODING = TIXML_ENCODING_LEGACY. Likewise, you may
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force it to TIXML_ENCODING_UTF8 with the same technique.
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For English users, using English XML, UTF-8 is the same as low-ASCII. You
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don't need to be aware of UTF-8 or change your code in any way. You can think
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of UTF-8 as a "superset" of ASCII.
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UTF-8 is not a double byte format - but it is a standard encoding of Unicode!
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TinyXML does not use or directly support wchar, TCHAR, or Microsoft's _UNICODE at this time.
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It is common to see the term "Unicode" improperly refer to UTF-16, a wide byte encoding
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of unicode. This is a source of confusion.
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For "high-ascii" languages - everything not English, pretty much - TinyXML can
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handle all languages, at the same time, as long as the XML is encoded
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in UTF-8. That can be a little tricky, older programs and operating systems
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tend to use the "default" or "traditional" code page. Many apps (and almost all
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modern ones) can output UTF-8, but older or stubborn (or just broken) ones
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still output text in the default code page.
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For example, Japanese systems traditionally use SHIFT-JIS encoding.
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Text encoded as SHIFT-JIS can not be read by TinyXML.
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A good text editor can import SHIFT-JIS and then save as UTF-8.
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The <a href="http://skew.org/xml/tutorial/">Skew.org link</a> does a great
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job covering the encoding issue.
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The test file "utf8test.xml" is an XML containing English, Spanish, Russian,
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and Simplified Chinese. (Hopefully they are translated correctly). The file
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"utf8test.gif" is a screen capture of the XML file, rendered in IE. Note that
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if you don't have the correct fonts (Simplified Chinese or Russian) on your
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system, you won't see output that matches the GIF file even if you can parse
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it correctly. Also note that (at least on my Windows machine) console output
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is in a Western code page, so that Print() or printf() cannot correctly display
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the file. This is not a bug in TinyXML - just an OS issue. No data is lost or
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destroyed by TinyXML. The console just doesn't render UTF-8.
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<h3> Entities </h3>
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TinyXML recognizes the pre-defined "character entities", meaning special
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characters. Namely:
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@verbatim
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& &
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< <
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> >
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" "
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' '
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@endverbatim
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These are recognized when the XML document is read, and translated to there
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UTF-8 equivalents. For instance, text with the XML of:
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@verbatim
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Far & Away
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@endverbatim
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will have the Value() of "Far & Away" when queried from the TiXmlText object,
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and will be written back to the XML stream/file as an ampersand. Older versions
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of TinyXML "preserved" character entities, but the newer versions will translate
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them into characters.
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Additionally, any character can be specified by its Unicode code point:
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The syntax " " or " " are both to the non-breaking space characher.
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<h3> Printing </h3>
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TinyXML can print output in several different ways that all have strengths and limitations.
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- Print( FILE* ). Output to a std-C stream, which includes all C files as well as stdout.
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- "Pretty prints", but you don't have control over printing options.
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- The output is streamed directly to the FILE object, so there is no memory overhead
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in the TinyXML code.
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- used by Print() and SaveFile()
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- operator<<. Output to a c++ stream.
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- Integrates with standart C++ iostreams.
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- Outputs in "network printing" mode without line breaks. Good for network transmission
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and moving XML between C++ objects, but hard for a human to read.
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- TiXmlPrinter. Output to a std::string or memory buffer.
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- API is less concise
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- Future printing options will be put here.
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- Printing may change slightly in future versions as it is refined and expanded.
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<h3> Streams </h3>
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With TIXML_USE_STL on TinyXML supports C++ streams (operator <<,>>) streams as well
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as C (FILE*) streams. There are some differences that you may need to be aware of.
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C style output:
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- based on FILE*
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- the Print() and SaveFile() methods
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Generates formatted output, with plenty of white space, intended to be as
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human-readable as possible. They are very fast, and tolerant of ill formed
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XML documents. For example, an XML document that contains 2 root elements
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and 2 declarations, will still print.
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C style input:
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- based on FILE*
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- the Parse() and LoadFile() methods
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A fast, tolerant read. Use whenever you don't need the C++ streams.
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C++ style output:
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- based on std::ostream
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- operator<<
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Generates condensed output, intended for network transmission rather than
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readability. Depending on your system's implementation of the ostream class,
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these may be somewhat slower. (Or may not.) Not tolerant of ill formed XML:
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a document should contain the correct one root element. Additional root level
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elements will not be streamed out.
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C++ style input:
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- based on std::istream
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- operator>>
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Reads XML from a stream, making it useful for network transmission. The tricky
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part is knowing when the XML document is complete, since there will almost
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certainly be other data in the stream. TinyXML will assume the XML data is
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complete after it reads the root element. Put another way, documents that
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are ill-constructed with more than one root element will not read correctly.
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Also note that operator>> is somewhat slower than Parse, due to both
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implementation of the STL and limitations of TinyXML.
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<h3> White space </h3>
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The world simply does not agree on whether white space should be kept, or condensed.
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For example, pretend the '_' is a space, and look at "Hello____world". HTML, and
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at least some XML parsers, will interpret this as "Hello_world". They condense white
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space. Some XML parsers do not, and will leave it as "Hello____world". (Remember
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to keep pretending the _ is a space.) Others suggest that __Hello___world__ should become
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Hello___world.
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It's an issue that hasn't been resolved to my satisfaction. TinyXML supports the
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first 2 approaches. Call TiXmlBase::SetCondenseWhiteSpace( bool ) to set the desired behavior.
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The default is to condense white space.
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If you change the default, you should call TiXmlBase::SetCondenseWhiteSpace( bool )
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before making any calls to Parse XML data, and I don't recommend changing it after
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it has been set.
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<h3> Handles </h3>
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Where browsing an XML document in a robust way, it is important to check
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for null returns from method calls. An error safe implementation can
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generate a lot of code like:
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@verbatim
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TiXmlElement* root = document.FirstChildElement( "Document" );
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if ( root )
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{
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TiXmlElement* element = root->FirstChildElement( "Element" );
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if ( element )
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{
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TiXmlElement* child = element->FirstChildElement( "Child" );
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if ( child )
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{
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TiXmlElement* child2 = child->NextSiblingElement( "Child" );
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if ( child2 )
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{
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// Finally do something useful.
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@endverbatim
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Handles have been introduced to clean this up. Using the TiXmlHandle class,
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the previous code reduces to:
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@verbatim
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TiXmlHandle docHandle( &document );
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TiXmlElement* child2 = docHandle.FirstChild( "Document" ).FirstChild( "Element" ).Child( "Child", 1 ).ToElement();
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if ( child2 )
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{
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// do something useful
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@endverbatim
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Which is much easier to deal with. See TiXmlHandle for more information.
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<h3> Row and Column tracking </h3>
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Being able to track nodes and attributes back to their origin location
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in source files can be very important for some applications. Additionally,
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knowing where parsing errors occured in the original source can be very
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time saving.
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TinyXML can tracks the row and column origin of all nodes and attributes
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in a text file. The TiXmlBase::Row() and TiXmlBase::Column() methods return
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the origin of the node in the source text. The correct tabs can be
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configured in TiXmlDocument::SetTabSize().
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<h2> Using and Installing </h2>
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To Compile and Run xmltest:
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A Linux Makefile and a Windows Visual C++ .dsw file is provided.
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Simply compile and run. It will write the file demotest.xml to your
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disk and generate output on the screen. It also tests walking the
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DOM by printing out the number of nodes found using different
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techniques.
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The Linux makefile is very generic and runs on many systems - it
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is currently tested on mingw and
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MacOSX. You do not need to run 'make depend'. The dependecies have been
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hard coded.
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<h3>Windows project file for VC6</h3>
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<ul>
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<li>tinyxml: tinyxml library, non-STL </li>
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<li>tinyxmlSTL: tinyxml library, STL </li>
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<li>tinyXmlTest: test app, non-STL </li>
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<li>tinyXmlTestSTL: test app, STL </li>
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</ul>
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<h3>Makefile</h3>
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At the top of the makefile you can set:
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PROFILE, DEBUG, and TINYXML_USE_STL. Details (such that they are) are in
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the makefile.
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In the tinyxml directory, type "make clean" then "make". The executable
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file 'xmltest' will be created.
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<h3>To Use in an Application:</h3>
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Add tinyxml.cpp, tinyxml.h, tinyxmlerror.cpp, tinyxmlparser.cpp, tinystr.cpp, and tinystr.h to your
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project or make file. That's it! It should compile on any reasonably
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compliant C++ system. You do not need to enable exceptions or
|
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RTTI for TinyXML.
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<h2> How TinyXML works. </h2>
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An example is probably the best way to go. Take:
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@verbatim
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<?xml version="1.0" standalone=no>
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<!-- Our to do list data -->
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<ToDo>
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<Item priority="1"> Go to the <bold>Toy store!</bold></Item>
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<Item priority="2"> Do bills</Item>
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</ToDo>
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@endverbatim
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Its not much of a To Do list, but it will do. To read this file
|
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(say "demo.xml") you would create a document, and parse it in:
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@verbatim
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TiXmlDocument doc( "demo.xml" );
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doc.LoadFile();
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||||
@endverbatim
|
||||
|
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And its ready to go. Now lets look at some lines and how they
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relate to the DOM.
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@verbatim
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<?xml version="1.0" standalone=no>
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@endverbatim
|
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|
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The first line is a declaration, and gets turned into the
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TiXmlDeclaration class. It will be the first child of the
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document node.
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This is the only directive/special tag parsed by TinyXML.
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Generally directive tags are stored in TiXmlUnknown so the
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commands wont be lost when it is saved back to disk.
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@verbatim
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<!-- Our to do list data -->
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@endverbatim
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A comment. Will become a TiXmlComment object.
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@verbatim
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<ToDo>
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@endverbatim
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The "ToDo" tag defines a TiXmlElement object. This one does not have
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any attributes, but does contain 2 other elements.
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@verbatim
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<Item priority="1">
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||||
@endverbatim
|
||||
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Creates another TiXmlElement which is a child of the "ToDo" element.
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This element has 1 attribute, with the name "priority" and the value
|
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"1".
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||||
@verbatim
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Go to the
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@endverbatim
|
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|
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A TiXmlText. This is a leaf node and cannot contain other nodes.
|
||||
It is a child of the "Item" TiXmlElement.
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||||
|
||||
@verbatim
|
||||
<bold>
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@endverbatim
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||||
|
||||
|
||||
Another TiXmlElement, this one a child of the "Item" element.
|
||||
|
||||
Etc.
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||||
|
||||
Looking at the entire object tree, you end up with:
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||||
@verbatim
|
||||
TiXmlDocument "demo.xml"
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TiXmlDeclaration "version='1.0'" "standalone=no"
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TiXmlComment " Our to do list data"
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TiXmlElement "ToDo"
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TiXmlElement "Item" Attribtutes: priority = 1
|
||||
TiXmlText "Go to the "
|
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TiXmlElement "bold"
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TiXmlText "Toy store!"
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TiXmlElement "Item" Attributes: priority=2
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TiXmlText "Do bills"
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@endverbatim
|
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|
||||
<h2> Documentation </h2>
|
||||
|
||||
The documentation is build with Doxygen, using the 'dox'
|
||||
configuration file.
|
||||
|
||||
<h2> License </h2>
|
||||
|
||||
TinyXML is released under the zlib license:
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any
|
||||
damages arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any
|
||||
purpose, including commercial applications, and to alter it and
|
||||
redistribute it freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must
|
||||
not claim that you wrote the original software. If you use this
|
||||
software in a product, an acknowledgment in the product documentation
|
||||
would be appreciated but is not required.
|
||||
|
||||
2. Altered source versions must be plainly marked as such, and
|
||||
must not be misrepresented as being the original software.
|
||||
|
||||
3. This notice may not be removed or altered from any source
|
||||
distribution.
|
||||
|
||||
<h2> References </h2>
|
||||
|
||||
The World Wide Web Consortium is the definitive standard body for
|
||||
XML, and their web pages contain huge amounts of information.
|
||||
|
||||
The definitive spec: <a href="http://www.w3.org/TR/2004/REC-xml-20040204/">
|
||||
http://www.w3.org/TR/2004/REC-xml-20040204/</a>
|
||||
|
||||
I also recommend "XML Pocket Reference" by Robert Eckstein and published by
|
||||
OReilly...the book that got the whole thing started.
|
||||
|
||||
<h2> Contributors, Contacts, and a Brief History </h2>
|
||||
|
||||
Thanks very much to everyone who sends suggestions, bugs, ideas, and
|
||||
encouragement. It all helps, and makes this project fun. A special thanks
|
||||
to the contributors on the web pages that keep it lively.
|
||||
|
||||
So many people have sent in bugs and ideas, that rather than list here
|
||||
we try to give credit due in the "changes.txt" file.
|
||||
|
||||
TinyXML was originally written by Lee Thomason. (Often the "I" still
|
||||
in the documentation.) Lee reviews changes and releases new versions,
|
||||
with the help of Yves Berquin, Andrew Ellerton, and the tinyXml community.
|
||||
|
||||
We appreciate your suggestions, and would love to know if you
|
||||
use TinyXML. Hopefully you will enjoy it and find it useful.
|
||||
Please post questions, comments, file bugs, or contact us at:
|
||||
|
||||
www.sourceforge.net/projects/tinyxml
|
||||
|
||||
Lee Thomason, Yves Berquin, Andrew Ellerton
|
||||
*/
|
||||
23
tinyxml2.cpp
23
tinyxml2.cpp
|
|
@ -1,3 +1,26 @@
|
|||
/*
|
||||
Original code by Lee Thomason (www.grinninglizard.com)
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any
|
||||
damages arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any
|
||||
purpose, including commercial applications, and to alter it and
|
||||
redistribute it freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must
|
||||
not claim that you wrote the original software. If you use this
|
||||
software in a product, an acknowledgment in the product documentation
|
||||
would be appreciated but is not required.
|
||||
|
||||
2. Altered source versions must be plainly marked as such, and
|
||||
must not be misrepresented as being the original software.
|
||||
|
||||
3. This notice may not be removed or altered from any source
|
||||
distribution.
|
||||
*/
|
||||
|
||||
#include "tinyxml2.h"
|
||||
|
||||
#include <string.h>
|
||||
|
|
|
|||
23
tinyxml2.h
23
tinyxml2.h
|
|
@ -1,3 +1,26 @@
|
|||
/*
|
||||
Original code by Lee Thomason (www.grinninglizard.com)
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any
|
||||
damages arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any
|
||||
purpose, including commercial applications, and to alter it and
|
||||
redistribute it freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must
|
||||
not claim that you wrote the original software. If you use this
|
||||
software in a product, an acknowledgment in the product documentation
|
||||
would be appreciated but is not required.
|
||||
|
||||
2. Altered source versions must be plainly marked as such, and
|
||||
must not be misrepresented as being the original software.
|
||||
|
||||
3. This notice may not be removed or altered from any source
|
||||
distribution.
|
||||
*/
|
||||
|
||||
#ifndef TINYXML_INCLUDED
|
||||
#define TINYXML2_INCLUDED
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue