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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>apply-string-subst-map</title><link rel="stylesheet" href="reference.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.75.2"><link rel="home" href="../index.html" title="DocBook XSL Stylesheets: ReferenceDocumentation"><link rel="up" href="generallibrary.html" title="General Library Templates"><link rel="prev" href="str.tokenize.keep.delimiters.html" title="str.tokenize.keep.delimiters"><link rel="next" href="relativeuri.html" title="Relative URI Functions"><link rel="copyright" href="copyright.html" title="License"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">apply-string-subst-map</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="str.tokenize.keep.delimiters.html">Prev</a></td><th width="60%" align="center">General Library Templates</th><td width="20%" align="right"><a accesskey="n" href="relativeuri.html">Next</a></td></tr></table><hr></div><div class="refentry" title="apply-string-subst-map"><a name="apply-string-subst-map"></a><div class="titlepage"></div>
<div class="refnamediv"><h2>apply-string-subst-map</h2><p>
apply-string-subst-map
— Apply a string-substitution map
</p></div>
<div class="refsect1" title="Description"><a name="id1456809"></a><h2>Description</h2>
<p>This function applies a “string substitution” map. Use it when
you want to do multiple string substitutions on the same target
content. It reads in two things: <em class="parameter"><code>content</code></em>, the
content on which to perform the substitution, and
<em class="parameter"><code>map.contents</code></em>, a node set of
elements (the names of the elements don't matter), with each element
having the following attributes:
</p><div class="itemizedlist"><ul class="itemizedlist" type="disc"><li class="listitem">
<code class="sgmltag-attribute">oldstring</code>, a string to
be replaced
</li><li class="listitem">
<code class="sgmltag-attribute">newstring</code>, a string with
which to replace <code class="sgmltag-attribute">oldstring</code>
</li></ul></div><p>
The function uses <em class="parameter"><code>map.contents</code></em> to
do substitution on <em class="parameter"><code>content</code></em>, and then
returns the modified contents.</p>
<div class="note" title="Note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3>
<p>This function is a very slightly modified version of Jeni
Tennison’s <code class="function">replace_strings</code> function in the
<a class="ulink" href="http://www.dpawson.co.uk/xsl/sect2/StringReplace.html#d9351e13" target="_top">multiple string replacements</a> section of Dave Pawson’s
<a class="ulink" href="http://www.dpawson.co.uk/xsl/index.html" target="_top">XSLT
FAQ</a>.</p>
<p>The <code class="function">apply-string-subst-map</code> function is
essentially the same function as the
<code class="function">apply-character-map</code> function; the only
difference is that in the map that
<code class="function">apply-string-subst-map</code> expects, <code class="sgmltag-attribute">oldstring</code> and <code class="sgmltag-attribute">newstring</code> attributes are used instead of
<code class="sgmltag-attribute">character</code> and <code class="sgmltag-attribute">string</code> attributes.</p>
</div>
<a name="apply-string-subst-map.frag"></a><pre class="programlisting">
<xsl:template name="apply-string-subst-map">
<xsl:param name="content"></xsl:param>
<xsl:param name="map.contents"></xsl:param>
<xsl:variable name="replaced_text">
<xsl:call-template name="string.subst">
<xsl:with-param name="string" select="$content"></xsl:with-param>
<xsl:with-param name="target" select="$map.contents[1]/@oldstring"></xsl:with-param>
<xsl:with-param name="replacement" select="$map.contents[1]/@newstring"></xsl:with-param>
</xsl:call-template>
</xsl:variable>
<xsl:choose>
<xsl:when test="$map.contents[2]">
<xsl:call-template name="apply-string-subst-map">
<xsl:with-param name="content" select="$replaced_text"></xsl:with-param>
<xsl:with-param name="map.contents" select="$map.contents[position() > 1]"></xsl:with-param>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$replaced_text"></xsl:value-of>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</pre>
</div>
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