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<title>The XML C library for Gnome</title>
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<a href="http://www.gnome.org/"><img src="smallfootonly.gif" alt="Gnome Logo"></a><a href="http://www.w3.org/Status"><img src="w3c.png" alt="W3C Logo"></a><a href="http://www.redhat.com/"><img src="redhat.gif" alt="Red Hat Logo"></a>
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<h1>The XML C library for Gnome</h1>
<h2>libxml</h2>
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<tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>Main Menu</b></center></td></tr>
<tr><td bgcolor="#fffacd"><ul>
<li><a href="index.html">Home</a></li>
<li><a href="intro.html">Introduction</a></li>
<li><a href="FAQ.html">FAQ</a></li>
<li><a href="docs.html">Documentation</a></li>
<li><a href="bugs.html">Reporting bugs and getting help</a></li>
<li><a href="help.html">How to help</a></li>
<li><a href="downloads.html">Downloads</a></li>
<li><a href="news.html">News</a></li>
<li><a href="XMLinfo.html">XML</a></li>
<li><a href="XSLT.html">XSLT</a></li>
<li><a href="python.html">Python and bindings</a></li>
<li><a href="architecture.html">libxml architecture</a></li>
<li><a href="tree.html">The tree output</a></li>
<li><a href="interface.html">The SAX interface</a></li>
<li><a href="xmldtd.html">Validation &amp; DTDs</a></li>
<li><a href="xmlmem.html">Memory Management</a></li>
<li><a href="encoding.html">Encodings support</a></li>
<li><a href="xmlio.html">I/O Interfaces</a></li>
<li><a href="catalog.html">Catalog support</a></li>
<li><a href="library.html">The parser interfaces</a></li>
<li><a href="entities.html">Entities or no entities</a></li>
<li><a href="namespaces.html">Namespaces</a></li>
<li><a href="upgrade.html">Upgrading 1.x code</a></li>
<li><a href="threads.html">Thread safety</a></li>
<li><a href="DOM.html">DOM Principles</a></li>
<li><a href="example.html">A real example</a></li>
<li><a href="contribs.html">Contributions</a></li>
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<a href="xml.html">flat page</a>, <a href="site.xsl">stylesheet</a>
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<li><a href="http://mail.gnome.org/archives/xml/">Mail archive</a></li>
<li><a href="http://xmlsoft.org/XSLT/">XSLT libxslt</a></li>
<li><a href="http://phd.cs.unibo.it/gdome2/">DOM gdome2</a></li>
<li><a href="http://www.aleksey.com/xmlsec/">XML-DSig xmlsec</a></li>
<li><a href="ftp://xmlsoft.org/">FTP</a></li>
<li><a href="http://www.fh-frankfurt.de/~igor/projects/libxml/">Windows binaries</a></li>
<li><a href="http://garypennington.net/libxml2/">Solaris binaries</a></li>
<li><a href="http://bugzilla.gnome.org/buglist.cgi?product=libxml&product=libxml2">Bug Tracker</a></li>
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<p>
<p>Libxml is the XML C library developped for the Gnome project.  XML itself
is a metalanguage to design markup languages, i.e. text language where
semantic and structure are added to the content using extra &quot;markup&quot;
information enclosed between angle bracket. HTML is the most well-known
markup language. Though the library is written in C <a href="python.html">a
variety of language binding</a> makes it available in other environments.</p>
<p>Libxml2 implements a number of existing standards related to markup
languages:</p>
<ul>
<li>the XML standard: <a href="http://www.w3.org/TR/REC-xml">http://www.w3.org/TR/REC-xml</a>
</li>
<li>Namespaces in XML: <a href="http://www.w3.org/TR/REC-xml-names/">http://www.w3.org/TR/REC-xml-names/</a>
</li>
<li>XML Base: <a href="http://www.w3.org/TR/xmlbase/">http://www.w3.org/TR/xmlbase/</a>
</li>
<li>
<a href="http://www.cis.ohio-state.edu/rfc/rfc2396.txt">RFC 2396</a> :
    Uniform Resource Identifiers <a href="http://www.ietf.org/rfc/rfc2396.txt">http://www.ietf.org/rfc/rfc2396.txt</a>
</li>
<li>XML Path Language (XPath) 1.0: <a href="http://www.w3.org/TR/xpath">http://www.w3.org/TR/xpath</a>
</li>
<li>HTML4 parser: <a href="http://www.w3.org/TR/html401/">http://www.w3.org/TR/html401/</a>
</li>
<li>most of XML Pointer Language (XPointer) Version 1.0: <a href="http://www.w3.org/TR/xptr">http://www.w3.org/TR/xptr</a>
</li>
<li>XML Inclusions (XInclude) Version 1.0: <a href="http://www.w3.org/TR/xinclude/">http://www.w3.org/TR/xinclude/</a>
</li>
<li>[ISO-8859-1], <a href="http://www.cis.ohio-state.edu/rfc/rfc2044.txt">rfc2044</a> [UTF-8]
    and <a href="http://www.cis.ohio-state.edu/rfc/rfc2781.txt">rfc2781</a>
    [UTF-16] core encodings</li>
<li>part of SGML Open Technical Resolution TR9401:1997</li>
<li>XML Catalogs Working Draft 06 August 2001: <a href="http://www.oasis-open.org/committees/entity/spec-2001-08-06.html">http://www.oasis-open.org/committees/entity/spec-2001-08-06.html</a>
</li>
<li>Canonical XML Version 1.0: <a href="http://www.w3.org/TR/xml-c14n">http://www.w3.org/TR/xml-c14n</a>
    and the Exclusive XML Canonicalization CR draft <a href="http://www.w3.org/TR/xml-exc-c14n">http://www.w3.org/TR/xml-exc-c14n</a>
</li>
</ul>
<p>In most cases libxml tries to implement the specifications in a relatively
strict way. As of release 2.4.16, libxml2 passes all 1800+ tests from the <a href="http://www.oasis-open.org/committees/xml-conformance/">OASIS XML Tests
Suite</a>.</p>
<p>To some extent libxml2 provide some support for the following other
specification but don't claim to implement them:</p>
<ul>
<li>Document Object Model (DOM) <a href="http://www.w3.org/TR/DOM-Level-2-Core/">http://www.w3.org/TR/DOM-Level-2-Core/</a>
    it doesn't implement the API itself, gdome2 does this in top of
  libxml2</li>
<li>
<a href="http://www.cis.ohio-state.edu/rfc/rfc959.txt">RFC 959</a> :
    libxml implements a basic FTP client code</li>
<li>
<a href="http://www.cis.ohio-state.edu/rfc/rfc1945.txt">RFC 1945</a> :
    HTTP/1.0, again a basic HTTP client code</li>
<li>SAX: a minimal SAX implementation compatible with early expat
  versions</li>
<li>DocBook SGML v4: libxml2 includes a hackish parser to transition to
  XML</li>
</ul>
<p>Libxml2 is known to be very portable, the library should build and work
without serious troubles on a variety of systems (Linux, Unix, Windows,
CygWin, MacOs, MacOsX, RISC Os, OS/2, VMS, QNX, MVS, ...)</p>
<p>Separate documents:</p>
<ul>
<li>
<a href="http://xmlsoft.org/XSLT/">the libxslt page</a> providing an
    implementation of XSLT 1.0 and common extensions like EXSLT for
  libxml2</li>
<li>
<a href="http://www.cs.unibo.it/~casarini/gdome2/">the gdome2 page</a>
    : a standard DOM2 implementation for libxml2</li>
<li>
<a href="http://www.aleksey.com/xmlsec/">the XMLSec page</a>: an
    implementation of <a href="http://www.w3.org/TR/xmldsig-core/">W3C XML
    Digital Signature</a> for libxml2</li>
</ul>
<p><a href="bugs.html">Daniel Veillard</a></p>
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