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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Library Template Reference</title>
<link rel="stylesheet" href="../reference.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.49+">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<div class="reference"><a name="d0e1"></a><div class="titlepage">
<div>
<h1 class="title"><a name="d0e1"></a>Library Template Reference
</h1>
</div>
<div>
<div class="author">
<h3 class="author">Norman Walsh</h3>
</div>
</div>
<div>
<p class="releaseinfo">
$Id: lib.xsl,v 1.7 2002/03/18 13:39:43 nwalsh Exp $
</p>
</div>
<div>
<p class="copyright"><a href="../copyright.html">Copyright</a> © 19992000 by Norman Walsh. <a href="../warranty.html">No Warranty</a>.
</p>
</div>
<hr>
</div>
<div class="partintro">
<div></div>
<div class="section">
<div class="titlepage">
<div>
<h2 class="title" style="clear: both"><a name="d0e24"></a>Introduction
</h2>
</div>
</div>
<p>This is technical reference documentation for the DocBook XSL
Stylesheets; it documents (some of) the parameters, templates, and
other elements of the stylesheets.
</p>
<p>This is not intended to be “user” documentation.
It is provided for developers writing customization layers for the
stylesheets, and for anyone who's interested in “how it
works”.
</p>
<p>Although I am trying to be thorough, this documentation is known
to be incomplete. Don't forget to read the source, too :-)
</p>
</div>
<div class="toc">
<p><b>Table of Contents</b></p>
<dl>
<dt><a href="#template.string.subst">string.subst</a> - Substitute one text string for another in a string
</dt>
<dt><a href="#template.xpointer.idref">xpointer.idref</a> - Extract IDREF from an XPointer
</dt>
<dt><a href="#template.length-magnitude">length-magnitude</a> - Return the unqualified dimension from a length specification
</dt>
<dt><a href="#template.length-units">length-units</a> - Return the units from a length specification
</dt>
<dt><a href="#template.length-spec">length-spec</a> - Return a fully qualified length specification
</dt>
<dt><a href="#template.pi-attribute">pi-attribute</a> - Extract a pseudo-attribute from a PI
</dt>
<dt><a href="#template.lookup.key">lookup.key</a> - Retrieve the value associated with a particular key in a table
</dt>
<dt><a href="#template.xpath.location">xpath.location</a> - Calculate the XPath child-sequence to the current node
</dt>
</dl>
</div>
</div>
<div class="refentry"><a name="template.string.subst"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>string.subst — Substitute one text string for another in a string</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2><pre class="synopsis"><xsl:template name="string.subst">
<xsl:param name="string"/>
<xsl:param name="target"/>
<xsl:param name="replacement"/>
...
</xsl:template></pre></div>
<div class="refdescription"><a name="d0e48"></a>
<p>The <tt>string.subst</tt> template replaces all
occurances of <i><tt>target</tt></i> in <i><tt>string</tt></i>
with <i><tt>replacement</tt></i> and returns the result.
</p>
</div>
</div>
<div class="refentry">
<div class="refentry.separator">
<hr>
</div><a name="template.xpointer.idref"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>xpointer.idref — Extract IDREF from an XPointer</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2><pre class="synopsis"><xsl:template name="xpointer.idref">
<xsl:param name="xpointer">http://...</xsl:param>
...
</xsl:template></pre></div>
<div class="refdescription"><a name="d0e74"></a>
<p>The <tt>xpointer.idref</tt> template returns the
ID portion of an XPointer which is a pointer to an ID within the current
document, or the empty string if it is not.
</p>
<p>In other words, <tt>xpointer.idref</tt> returns
“foo” when passed either <tt>#foo</tt>
or <tt>#xpointer(id('foo'))</tt>, otherwise it returns
the empty string.
</p>
</div>
</div>
<div class="refentry">
<div class="refentry.separator">
<hr>
</div><a name="template.length-magnitude"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>length-magnitude — Return the unqualified dimension from a length specification</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2><pre class="synopsis"><xsl:template name="length-magnitude">
<xsl:param name="length" select="'0pt'"/>
...
</xsl:template></pre></div>
<div class="refdescription"><a name="d0e106"></a>
<p>The <tt>length-magnitude</tt> template returns the
unqualified length ("20" for "20pt") from a dimension.
</p>
</div>
</div>
<div class="refentry">
<div class="refentry.separator">
<hr>
</div><a name="template.length-units"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>length-units — Return the units from a length specification</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2><pre class="synopsis"><xsl:template name="length-units">
<xsl:param name="length" select="'0pt'"/>
<xsl:param name="default.units" select="'pt'"/>
...
</xsl:template></pre></div>
<div class="refdescription"><a name="d0e123"></a>
<p>The <tt>length-units</tt> template returns the
units ("pt" for "20pt") from a length. If no units are supplied on the
length, the <i><tt>defauilt.units</tt></i> are returned.
</p>
</div>
</div>
<div class="refentry">
<div class="refentry.separator">
<hr>
</div><a name="template.length-spec"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>length-spec — Return a fully qualified length specification</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2><pre class="synopsis"><xsl:template name="length-spec">
<xsl:param name="length" select="'0pt'"/>
<xsl:param name="default.units" select="'pt'"/>
...
</xsl:template></pre></div>
<div class="refdescription"><a name="d0e143"></a>
<p>The <tt>length-spec</tt> template returns the
qualified length from a dimension. If an unqualified length is given,
the <i><tt>default.units</tt></i> will be added to it.
</p>
</div>
</div>
<div class="refentry">
<div class="refentry.separator">
<hr>
</div><a name="template.pi-attribute"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>pi-attribute — Extract a pseudo-attribute from a PI</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2><pre class="synopsis"><xsl:template name="pi-attribute">
<xsl:param name="pis" select="processing-instruction('')"/>
<xsl:param name="attribute">filename</xsl:param>
<xsl:param name="count">1</xsl:param>
...
</xsl:template></pre></div>
<div class="refdescription"><a name="d0e163"></a>
<p>The <tt>pi-attribute</tt> template extracts a pseudo-attribute
from a processing instruction. For example, given the PI
“<tt><?foo bar="1" baz='red'?></tt>”,
</p>
<pre class="programlisting"><xsl:call-template name="pi-attribute">
<xsl:with-param name="pis" select="processing-instruction('foo')"/>
<xsl:with-param name="attribute" select="'baz'"/>
</xsl:call-template></pre>
<p>will return “red”. This template returns the first matching
attribute that it finds. Presented with processing instructions that
contain badly formed pseudo-attributes (missing or unbalanced quotes,
for example), the template may silently return erroneous results.
</p>
</div>
</div>
<div class="refentry">
<div class="refentry.separator">
<hr>
</div><a name="template.lookup.key"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>lookup.key — Retrieve the value associated with a particular key in a table</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2><pre class="synopsis"><xsl:template name="lookup.key">
<xsl:param name="key" select="''"/>
<xsl:param name="table" select="''"/>
...
</xsl:template></pre></div>
<div class="refdescription"><a name="d0e193"></a>
<p>Given a table of space-delimited key/value pairs,
the <tt>lookup.key</tt> template extracts the value associated
with a particular key.
</p>
</div>
</div>
<div class="refentry">
<div class="refentry.separator">
<hr>
</div><a name="template.xpath.location"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2>Name</h2>
<p>xpath.location — Calculate the XPath child-sequence to the current node</p>
</div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2><pre class="synopsis"><xsl:template name="xpath.location">
<xsl:param name="node" select="."/>
<xsl:param name="path" select="''"/>
...
</xsl:template></pre></div>
<div class="refdescription"><a name="d0e210"></a>
<p>The <tt>xpath.location</tt> template calculates the
absolute path from the root of the tree to the current element node.
</p>
</div>
</div>
</div>
</body>
</html>
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