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<!--#set var="title" value="Source Code Availability for The W3C Markup Validation Service"
--><!--#set var="relroot" value="../"
--><!--#include virtual="../header.html" -->
<div class="doc">
<h2>Source code availability<br />for the W3C Markup Validator</h2>
<h3 id="TableOfContents">Table of Contents</h3>
<div id="toc">
<ul>
<li><a href="#getting">Retrieving and browsing the Code</a>
<ul>
<li><a href="#browse">Browsing the code</a></li>
<li><a href="#tarball">Download tarballs</a></li>
<li><a href="#rpm">Fedora/Red Hat RPM package</a></li>
<li><a href="#suse">openSUSE/SUSE Linux RPM package</a></li>
<li><a href="#deb">Debian GNU/Linux package</a></li>
<li><a href="#mac">Mac OS X Application</a></li>
<li><a href="#CVS">Mercurial repository</a></li>
</ul>
</li>
<li><a href="#using">Using the code</a></li>
</ul>
</div>
<h3><a name="getting" id="getting"></a>Retrieving and browsing the Code</h3>
<p><a id="skip" name="skip"></a>
The source code for the <a href="../"><acronym title="World Wide Web Consortium">W3C</acronym>
Markup Validation Service</a> is available under the terms of the
<a href="http://www.w3.org/Consortium/Legal/copyright-software"><acronym title="World Wide Web Consortium">W3C</acronym>
Software License</a>. Source tarball of the latest production
version is always available at
<<a href="http://validator.w3.org/validator.tar.gz">http://validator.w3.org/validator.tar.gz</a>>.
Development code is only available from the Mercurial repository.
</p>
<h4><a id="browse" name="browse"></a>Browsing the code</h4>
<p>
If you just want to glance at the code, or see its revision
history, you can
<a href="http://dvcs.w3.org/hg/markup-validator/file/tip/">browse it on
the web</a>.
</p>
<p>
The most interesting files are currently
<a href="http://dvcs.w3.org/hg/markup-validator/file/tip/httpd/cgi-bin/check">a
CGI script called "check"</a> that does pretty much everything,
and possibly also <a
href="http://dvcs.w3.org/hg/markup-validator/file/tip/httpd/conf/httpd.conf">the
httpd.conf configuration file snippet for Apache</a>.
Select the topmost revision numbers on these
pages to see the most recent revision of each file.
</p>
<h4><a id="tarball" name="tarball"></a>Download the code in tarballs</h4>
<p>
If you want a copy of all the files that make up the service, you
can download a tarball of <a href="http://validator.w3.org/validator.tar.gz">the code</a>
(~300kB) and <a href="http://validator.w3.org/sgml-lib.tar.gz">the <acronym
title="Document Type Definitions">DTDs</acronym></a> (~500kB).
</p>
<h4><a id="rpm" name="rpm"></a>Fedora/Red Hat RPM package</h4>
<p>
Fedora RPM packages of the validator are included in Fedora.
The name of the validator package is <tt>w3c-markup-validator</tt>,
use the standard automated package management tools of the
distribution (such as yum) to install it along with its
dependencies.
</p>
<p>
For Red Hat Enterprise Linux and derivative distributions, the
<tt>w3c-markup-validator</tt> package is available in
<a href="http://fedoraproject.org/wiki/EPEL">EPEL</a>.
</p>
<h4><a id="suse" name="suse"></a>openSUSE/SUSE Linux RPM package</h4>
<p>
openSUSE/SUSE Linux RPM packages of the validator are available,
courtesy of Sierk Bornemann, at software.openSUSE.org,
<<a href="http://software.opensuse.org/">http://software.opensuse.org/</a>>.
Starting with openSUSE 10.3, the latest stable validator package and all its
dependencies are included in the official stable openSUSE distribution.
The name of the validator package is <tt>w3c-markup-validator</tt>,
use the standard automated package management tools of the
distribution (such as <em>YaST</em>, <em>zypper</em>, <em>smart</em>,
<em>apt4rpm</em> or <em>yum</em>) to install it along with its
dependencies.
</p>
<p>
Additionally, you can also get these and other needed packages
from the openSUSE Software Repository at
<<a href="http://download.opensuse.org/repositories/validators/">http://download.opensuse.org/repositories/validators/</a>>
or from one of its mirrors, or (except needed Perl packages)
from sierkbornemann.de,
<<a href="http://sierkbornemann.de/pub/tools/w3c-markup-validator/">http://sierkbornemann.de/pub/tools/w3c-markup-validator/</a>>.
Needed Perl packages are provided through the openSUSE Software Repository at
<<a href="http://download.opensuse.org/repositories/devel:/languages:/perl/">http://download.opensuse.org/repositories/devel:/languages:/perl/</a>>.
</p>
<h4><a name="deb" id="deb"></a>Debian GNU/Linux package</h4>
<p>
A Debian package is available, courtesy of Frédéric
Schütz.
</p>
<p>
Starting with Debian 3.1 ("Sarge"), the package and all its
dependencies are included in the official Debian distribution, and
can be installed by running the command <kbd>apt-get install
w3c-markup-validator</kbd> as root.
</p>
<p>
Debian 4.0 ("Etch") includes version 0.7.4 of the validator; the
Debian Testing and Unstable distributions usually include the latest
version.
</p>
<h4 id="mac">Mac OS X Application</h4>
<p>
The Validator is also packaged as a standalone Mac OS X Application,
called <a href="http://habilis.net/validator-sac/">Validator <abbr title="[Stand Alone Complex]">S.A.C.</abbr></a>, courtesy of <a href="http://habilis.net/chuck/" title="Chuck Houpt's Home Page">Chuck Houpt</a>.</p>
<h4><a id="CVS" name="CVS"></a>Mercurial repository</h4>
<p>
If you intend to actively mirror the code and/or contribute
patches to the code, you should install and become familiar
with <a href="http://mercurial.selenic.com/">Mercurial</a>;
this is the tool we use for revision control.
</p>
<p>
For instructions on how to retrieve the code using Mercurial,
see our <a href="http://dvcs.w3.org/hg/markup-validator/">web-based
interface to the repository</a>.
</p>
<h3><a id="using" name="using"></a>Using the code</h3>
<p>
The purpose of making the source code available is partly to allow
others to set up mirrors of the service (either publicly or within
an intranet behind a firewall), but also to allow us to collaborate
on making the service better! If you are interested in helping with
the development, we suggest you first <a href="../docs/install.html">install</a>
the code and <a href="../docs/devel.html">read our instructions for developers</a>.
</p>
</div>
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