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| 1 | <html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Libxml Tutorial</title><meta name="generator" content="DocBook XSL Stylesheets V1.61.2"><link rel="home" href="index.html" title="Libxml Tutorial"><link rel="next" href="ar01s02.html" title="Data Types"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Libxml Tutorial</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="ar01s02.html">Next</a></td></tr></table><hr></div><div class="article" lang="en"><div class="titlepage"><div><div><h1 class="title"><a name="id2473660"></a>Libxml Tutorial</h1></div><div><div class="author"><h3 class="author"><span class="firstname">John</span> <span class="surname">Fleck</span></h3></div></div><div><p class="copyright">Copyright © 2002, 2003 John Fleck</p></div><div><div class="revhistory"><table border="1" width="100%" summary="Revision history"><tr><th align="left" valign="top" colspan="2"><b>Revision History</b></th></tr><tr><td align="left">Revision 1</td><td align="left">June 4, 2002</td></tr><tr><td align="left" colspan="2">Initial draft</td></tr><tr><td align="left">Revision 2</td><td align="left">June 12, 2002</td></tr><tr><td align="left" colspan="2">retrieving attribute value added</td></tr><tr><td align="left">Revision 3</td><td align="left">Aug. 31, 2002</td></tr><tr><td align="left" colspan="2">freeing memory fix</td></tr><tr><td align="left">Revision 4</td><td align="left">Nov. 10, 2002</td></tr><tr><td align="left" colspan="2">encoding discussion added</td></tr><tr><td align="left">Revision 5</td><td align="left">Dec. 15, 2002</td></tr><tr><td align="left" colspan="2">more memory freeing changes</td></tr><tr><td align="left">Revision 6</td><td align="left">Jan. 26. 2003</td></tr><tr><td align="left" colspan="2">add index</td></tr><tr><td align="left">Revision 7</td><td align="left">April 25, 2003</td></tr><tr><td align="left" colspan="2">add compilation appendix</td></tr><tr><td align="left">Revision 8</td><td align="left">July 24, 2003</td></tr><tr><td align="left" colspan="2">add XPath example</td></tr><tr><td align="left">Revision 9</td><td align="left">Feb. 14, 2004</td></tr><tr><td align="left" colspan="2">Fix bug in XPath example</td></tr><tr><td align="left">Revision 7</td><td align="left">Aug. 24, 2004</td></tr><tr><td align="left" colspan="2">Fix another bug in XPath example</td></tr></table></div></div></div><div></div><hr></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><a href="index.html#introduction">Introduction</a></dt><dt><a href="ar01s02.html">Data Types</a></dt><dt><a href="ar01s03.html">Parsing the file</a></dt><dt><a href="ar01s04.html">Retrieving Element Content</a></dt><dt><a href="ar01s05.html">Using XPath to Retrieve Element Content</a></dt><dt><a href="ar01s06.html">Writing element content</a></dt><dt><a href="ar01s07.html">Writing Attribute</a></dt><dt><a href="ar01s08.html">Retrieving Attributes</a></dt><dt><a href="ar01s09.html">Encoding Conversion</a></dt><dt>A. <a href="apa.html">Compilation</a></dt><dt>B. <a href="apb.html">Sample Document</a></dt><dt>C. <a href="apc.html">Code for Keyword Example</a></dt><dt>D. <a href="apd.html">Code for XPath Example</a></dt><dt>E. <a href="ape.html">Code for Add Keyword Example</a></dt><dt>F. <a href="apf.html">Code for Add Attribute Example</a></dt><dt>G. <a href="apg.html">Code for Retrieving Attribute Value Example</a></dt><dt>H. <a href="aph.html">Code for Encoding Conversion Example</a></dt><dt>I. <a href="api.html">Acknowledgements</a></dt></dl></div><div class="abstract"><p class="title"><b>Abstract</b></p><p>Libxml is a freely licensed C language library for handling
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| 2 | <span class="acronym">XML</span>, portable across a large number of platforms. This
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| 3 | tutorial provides examples of its basic functions.</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="introduction"></a>Introduction</h2></div></div><div></div></div><p>Libxml is a C language library implementing functions for reading,
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| 4 | creating and manipulating <span class="acronym">XML</span> data. This tutorial
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| 5 | provides example code and explanations of its basic functionality.</p><p>Libxml and more details about its use are available on <a href="http://www.xmlsoft.org/" target="_top">the project home page</a>. Included there is complete <a href="http://xmlsoft.org/html/libxml-lib.html" target="_top">
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| 6 | <span class="acronym">API</span> documentation</a>. This tutorial is not meant
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| 7 | to substitute for that complete documentation, but to illustrate the
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| 8 | functions needed to use the library to perform basic operations.
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| 9 |
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| 10 | </p><p>The tutorial is based on a simple <span class="acronym">XML</span> application I
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| 11 | use for articles I write. The format includes metadata and the body
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| 12 | of the article.</p><p>The example code in this tutorial demonstrates how to:
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| 13 | </p><div class="itemizedlist"><ul type="disc"><li><p>Parse the document.</p></li><li><p>Extract the text within a specified element.</p></li><li><p>Add an element and its content.</p></li><li><p>Add an attribute.</p></li><li><p>Extract the value of an attribute.</p></li></ul></div><p>
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| 14 | </p><p>Full code for the examples is included in the appendices.</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="ar01s02.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"> </td><td width="20%" align="center"> </td><td width="40%" align="right" valign="top"> Data Types</td></tr></table></div></body></html>
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