now autogenerate the web site from the main HTML document. Daniel
* doc/site.xsl doc/*.html doc/Makefile.am: now autogenerate
the web site from the main HTML document.
Daniel
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+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
+<html>
+<head>
+<meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type">
+<style type="text/css"><!--
+TD {font-size: 10pt; font-family: Verdana,Arial,Helvetica}
+BODY {font-size: 10pt; font-family: Verdana,Arial,Helvetica; margin-top: 5pt; margin-left: 0pt; margin-right: 0pt}
+H1 {font-size: 16pt; font-family: Verdana,Arial,Helvetica}
+H2 {font-size: 14pt; font-family: Verdana,Arial,Helvetica}
+H3 {font-size: 12pt; font-family: Verdana,Arial,Helvetica}
+--></style>
+<title>Namespaces</title>
+</head>
+<body bgcolor="#8b7765" text="#000000" link="#000000" vlink="#000000">
+<table border="0" width="100%" cellpadding="5" cellspacing="0" align="center"><tr>
+<td width="180">
+<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>
+</td>
+<td><table border="0" width="90%" cellpadding="2" cellspacing="0" align="center" bgcolor="#000000"><tr><td><table width="100%" border="0" cellspacing="1" cellpadding="3" bgcolor="#fffacd"><tr><td align="center">
+<h1>The XML C library for Gnome</h1>
+<h2>Namespaces</h2>
+</td></tr></table></td></tr></table></td>
+</tr></table>
+<table border="0" cellpadding="4" cellspacing="0" width="100%" align="center"><tr><td bgcolor="#8b7765"><table border="0" cellspacing="0" cellpadding="2" width="100%"><tr>
+<td valign="top" width="200" bgcolor="#8b7765"><table border="0" cellspacing="0" cellpadding="1" width="100%" bgcolor="#000000"><tr><td><table width="100%" border="0" cellspacing="1" cellpadding="3">
+<tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>Main Menu</b></center></td></tr>
+<tr><td bgcolor="#fffacd"><ul style="margin-left: -2pt">
+<li><a href="index.html">Home</a></li>
+<li><a href="FAQ.html">FAQ</a></li>
+<li><a href="intro.html">Introduction</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="XML.html">XML</a></li>
+<li><a href="XSLT.html">XSLT</a></li>
+<li><a href="architecture.html">An overview of 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="library.html">The XML library 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="valid.html">Validation, or are you afraid of DTDs ?</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>
+<li><a href="encoding.html">Encodings support</a></li>
+<li><a href="catalog.html">Catalogs support</a></li>
+<li><a href="xmlio.html">I/O interfaces</a></li>
+<li><a href="xmlmem.html">Memory interfaces</a></li>
+<li><a href="xmldtd.html">DTD support</a></li>
+<li><a href="xml.html">flat page</a></li>
+</ul></td></tr>
+</table></td></tr></table></td>
+<td valign="top" bgcolor="#8b7765"><table border="0" cellspacing="0" cellpadding="1" width="100%"><tr><td><table border="0" cellspacing="0" cellpadding="1" width="100%" bgcolor="#000000"><tr><td><table border="0" cellpadding="3" cellspacing="1" width="100%"><tr><td bgcolor="#fffacd">
+<p>The libxml library implements <a href="http://www.w3.org/TR/REC-xml-names/">XML namespaces</a> support by
+recognizing namespace contructs in the input, and does namespace lookup
+automatically when building the DOM tree. A namespace declaration is
+associated with an in-memory structure and all elements or attributes within
+that namespace point to it. Hence testing the namespace is a simple and fast
+equality operation at the user level.</p>
+<p>I suggest that people using libxml use a namespace, and declare it in the
+root element of their document as the default namespace. Then they don't need
+to use the prefix in the content but we will have a basis for future semantic
+refinement and merging of data from different sources. This doesn't increase
+the size of the XML output significantly, but significantly increases its
+value in the long-term. Example:</p>
+<pre><mydoc xmlns="http://mydoc.example.org/schemas/">
+ <elem1>...</elem1>
+ <elem2>...</elem2>
+</mydoc></pre>
+<p>The namespace value has to be an absolute URL, but the URL doesn't have to
+point to any existing resource on the Web. It will bind all the element and
+atributes with that URL. I suggest to use an URL within a domain you control,
+and that the URL should contain some kind of version information if possible.
+For example, <code>"http://www.gnome.org/gnumeric/1.0/"</code> is a good
+namespace scheme.</p>
+<p>Then when you load a file, make sure that a namespace carrying the
+version-independent prefix is installed on the root element of your document,
+and if the version information don't match something you know, warn the user
+and be liberal in what you accept as the input. Also do *not* try to base
+namespace checking on the prefix value. <foo:text> may be exactly the
+same as <bar:text> in another document. What really matters is the URI
+associated with the element or the attribute, not the prefix string (which is
+just a shortcut for the full URI). In libxml, element and attributes have an
+<code>ns</code> field pointing to an xmlNs structure detailing the namespace
+prefix and its URI.</p>
+<p>@@Interfaces@@</p>
+<p>@@Examples@@</p>
+<p>Usually people object to using namespaces together with validity checking.
+I will try to make sure that using namespaces won't break validity checking,
+so even if you plan to use or currently are using validation I strongly
+suggest adding namespaces to your document. A default namespace scheme
+<code>xmlns="http://...."</code> should not break validity even on less
+flexible parsers. Using namespaces to mix and differentiate content coming
+from multiple DTDs will certainly break current validation schemes. I will
+try to provide ways to do this, but this may not be portable or
+standardized.</p>
+<p><a href="mailto:daniel@veillard.com">Daniel Veillard</a></p>
+</td></tr></table></td></tr></table></td></tr></table></td>
+</tr></table></td></tr></table>
+</body>
+</html>