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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>W3C HTML Validation Service: Source Code</title>
<link rev="made" href="mailto:gerald@w3.org">
<meta name="keywords" content="HTML, Hypertext Markup Language, Validation,
W3C HTML Validation Service, Source Code">
<meta name="description" content="Source Code for W3C's Validation Service.">
<meta name="revision"
content="$Id: index.html,v 1.1 1998-08-05 21:21:26 gerald Exp $">
</head>
<body bgcolor="#FFFFFF" text="#000000" link="#0000ee" vlink="#551a8b">
<p>
<a href="http://www.w3.org/"><img
src="http://www.w3.org/Icons/WWW/w3c_home" height=48 border=0
alt="W3C"></a>
</p>
<h1>W3C HTML Validation Service: Source Code</h1>
<p>
The source code for the <a
href="../">W3C HTML Validation Service</a> is available under the terms
of the <a href="http://www.w3.org/Consortium/Legal/copyright-software">W3C
Software Copyright</a>.
</p>
<p>
You can retrieve the code a number of ways:
</p>
<ul>
<li><p>If you intend to actively mirror the code or and/or contribute
patches to the code, you should install and become familiar with <a
href="http://www.cyclic.com/cvs/info.html">CVS</a>; this is the
tool we use for revision control (it is also used by the <a
href="http://dev.apache.org/">Apache</a> and <a
href="http://www.mozilla.org/cvs.html">Mozilla</a> developers,
and is generally a good thing to get to know.) <a
href="http://www.loria.fr/~molli/cvs-index.html">More information
on CVS</a> is available courtesy of <a
href="http://www.loria.fr/~molli/">Pascal Molli</a>.</p>
<p>
Our CVS base is available read-only, using the CVS pserver authentification:
<blockquote><code>
CVSROOT=:pserver:anonymous@dev.w3.org:/sources/public
</code></blockquote>
<blockquote><code>
password: anonymous
</code></blockquote>
<li>If you just want to glance at the code, or see its revision
history, you can <a
href="http://dev.w3.org/cgi-bin/cvsweb/validator/">browse it on the web</a>.
<p>
The most interesting files are currently <a
href="http://dev.w3.org/cgi-bin/cvsweb/validator/httpd/cgi-bin/check">a
CGI script called "check"</a> that does pretty much everything,
and possibly also <a
href="http://dev.w3.org/cgi-bin/cvsweb/validator/httpd/conf/httpd.conf">the
httpd.conf</a>. (select the topmost revision numbers on these pages to see
the most recent revision of each file.)
</p>
</ul>
<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 -- there are <a
href="/todo.html">many ways the service could be improved</a> but I
only have a small amount of time to work on it myself.
</p>
<h2>Prerequisites</h2>
<p>
Before you will be able to get the code to run, you will need a few
things already installed on your system:
</p>
<ul>
<li>A Unix-like operating system. It may work with Windows NT or
other systems, but I haven't tried it yet. It has worked on Linux,
Solaris, FreeBSD, and Digital UNIX. If anyone tries it on other
systems and gets it to work, please <a href="/feedback.html">let
me know</a> (and <a href="/feedback.html">send me patches</a>, if
they are needed to get it to work eleswhere.)
<li><a href="http://www.jclark.com/sp/">SP version 1.2.1 or higher</a>.
SP is the SGML parser used by the service. More recent versions than
1.2.1 will likely work, but I haven't tried them yet. Patches will
likely be necessary if the output format has changed even slightly
since version 1.2.1.
<li><a
href="http://www.ics.uci.edu/pub/websoft/libwww-perl/">libwww-perl4</a>:
this is a perl library I use to retrieve documents from other Web sites
before validating them. I hacked this slightly before using it in the
validation service; I would really like to replace this with the more
modern <a href="http://www.linpro.no/lwp/">LWP module for Perl5</a>;
if anyone can do this and <a
href="/feedback.html">supply patches</a>, I would be very grateful!
<li>A web server: I am currently running <a
href="http://www.apache.org/">Apache</a> version 1.3.1, but likely any
version will work, and other httpd's may work as well.
<li><a href="http://www.perl.com/">Perl</a>: the <a
href="http://dev.w3.org/cgi-bin/cvsweb/validator/httpd/cgi-bin/check">main
CGI script</a> that does everything is written in Perl; as far as
I know it will work with Perl 4 since my knowledge of Perl is currently
circa 1994, but you should really be using Perl 5. (My version of Perl
is 5.004_04 or higher.)
</ul>
<p>
If anyone tries to use the code, and succeeds (or fails), please <a
href="/feedback.html">let me know</a>!
</p>
<hr>
<address>
<a href="http://validator.w3.org/check/referer"><img
src="http://validator.w3.org/images/vh40.gif" height=31 width=88
align=right border=0 alt="Valid W3C HTML 4.0!"></a>
<a href="/feedback.html">Gerald Oskoboiny</A><br>
$Date: 1998-08-05 21:21:26 $
</address>
</body>
</html>
|
