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<title>The XML C parser and toolkit of Gnome
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<h1>The XML C parser and toolkit of Gnome
</h1>
<h2>libxml
</h2>
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<a href="index.html">Home
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<a href="intro.html">Introduction
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<a href="xmldtd.html">Validation &amp; DTDs
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<b>Related links
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<ul>
<li>
<a href="http://mail.gnome.org/archives/xml/">Mail archive
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<a href="http://xmlsoft.org/XSLT/">XSLT libxslt
</a>
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<a href="http://phd.cs.unibo.it/gdome2/">DOM gdome2
</a>
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<a href="http://www.aleksey.com/xmlsec/">XML-DSig xmlsec
</a>
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<a href="ftp://xmlsoft.org/">FTP
</a>
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<a href="http://www.zlatkovic.com/projects/libxml/">Windows binaries
</a>
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<a href="http://garypennington.net/libxml2/">Solaris binaries
</a>
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<a href="http://www.zveno.com/open_source/libxml2xslt.html">MacOsX binaries
</a>
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<a href="http://sourceforge.net/projects/libxml2-pas/">Pascal bindings
</a>
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<li>
<a href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Bug Tracker
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<p></p>
<p style="text-align: right; font-style: italic; font-size: 10pt">"Programming
with libxml2 is like the thrilling embrace of an exotic stranger."
<a href="http://diveintomark.org/archives/2004/02/18/libxml2">Mark
Pilgrim
</a>
</p>
<p>Libxml2 is the XML C parser and toolkit developed for the Gnome project
(but usable outside of the Gnome platform), it is free software available
under the
<a href="http://www.opensource.org/licenses/mit-license.html">MIT
License
</a>
. XML itself is a metalanguage to design markup languages, i.e.
text language where semantic and structure are added to the content using
extra "markup" information enclosed between angle brackets. HTML is the most
well-known markup language. Though the library is written in C
<a href="python.html">a variety of language bindings
</a>
make it available in
other environments.
</p>
<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, MacOS X, RISC Os, OS/2, VMS, QNX, MVS, ...)
</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>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-x encodings, as well as
<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] Unicode encodings, and more if using iconv support
</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>
<li>Relax NG, ISO/IEC 19757-2:2003,
<a href="http://www.oasis-open.org/committees/relax-ng/spec-20011203.html">http://www.oasis-open.org/committees/relax-ng/spec-20011203.html
</a>
</li>
<li>W3C XML Schemas Part 2: Datatypes
<a href="http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/">REC 02 May
2001
</a>
</li>
<li>W3C
<a href="http://www.w3.org/TR/xml-id/">xml:id
</a>
Working Draft 7
April 2004
</li>
</ul>
<p>In most cases libxml2 tries to implement the specifications in a
relatively strictly compliant 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 provides support for the following additional
specifications but doesn't claim to implement them completely:
</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 on top of
libxml2
</li>
<li> <a href="http://www.cis.ohio-state.edu/rfc/rfc959.txt">RFC 959
</a>
:
libxml2 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>A partial implementation of
<a href="http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/">XML Schemas Part
1: Structure
</a>
is being worked on but it would be far too early to make any
conformance statement about it at the moment.
</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>
<li>also check the related links section below for more related and active
projects.
</li>
</ul>
<p>Logo designed by
<a href="mailto:liyanage@access.ch">Marc Liyanage
</a>
.
</p>
<p>
<a href="bugs.html">Daniel Veillard
</a>
</p>
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