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<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>trim.common.uri.paths</title><link rel="stylesheet" type="text/css" href="../reference.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="../index.html" title="DocBook XSL Stylesheets: Reference Documentation"><link rel="up" href="relativeuri.html" title="Relative URI Functions"><link rel="prev" href="count.uri.path.depth.html" title="count.uri.path.depth"><link rel="next" href="resolve.path.html" title="resolve.path"><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">trim.common.uri.paths</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="count.uri.path.depth.html">Prev</a> </td><th width="60%" align="center">Relative URI Functions</th><td width="20%" align="right"> <a accesskey="n" href="resolve.path.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="trim.common.uri.paths"></a><div class="titlepage"></div>
<div class="refnamediv"><h2>trim.common.uri.paths</h2><p>
trim.common.uri.paths
 &#8212; Trim common leading path components from a relative URI
</p></div>

<div class="refsect1"><a name="idp9626960"></a><h2>Description</h2>

<p>This function trims common leading path components from a relative URI.</p>

<a name="trim.common.uri.paths.frag"></a><pre class="programlisting">
&lt;xsl:template name="trim.common.uri.paths"&gt;
  &lt;xsl:param name="uriA" select="''"&gt;&lt;/xsl:param&gt;
  &lt;xsl:param name="uriB" select="''"&gt;&lt;/xsl:param&gt;
  &lt;xsl:param name="return" select="'A'"&gt;&lt;/xsl:param&gt;

  &lt;!-- Resolve any ../ in the path --&gt;
  &lt;xsl:variable name="trimmed.uriA"&gt;
    &lt;xsl:call-template name="resolve.path"&gt;
      &lt;xsl:with-param name="filename" select="$uriA"&gt;&lt;/xsl:with-param&gt;
    &lt;/xsl:call-template&gt;
  &lt;/xsl:variable&gt;

  &lt;xsl:variable name="trimmed.uriB"&gt;
    &lt;xsl:call-template name="resolve.path"&gt;
      &lt;xsl:with-param name="filename" select="$uriB"&gt;&lt;/xsl:with-param&gt;
    &lt;/xsl:call-template&gt;
  &lt;/xsl:variable&gt;

  &lt;xsl:choose&gt;
    &lt;xsl:when test="contains($trimmed.uriA, '/') and contains($trimmed.uriB, '/')                     and substring-before($trimmed.uriA, '/') = substring-before($trimmed.uriB, '/')"&gt;
      &lt;xsl:call-template name="trim.common.uri.paths"&gt;
        &lt;xsl:with-param name="uriA" select="substring-after($trimmed.uriA, '/')"&gt;&lt;/xsl:with-param&gt;
        &lt;xsl:with-param name="uriB" select="substring-after($trimmed.uriB, '/')"&gt;&lt;/xsl:with-param&gt;
        &lt;xsl:with-param name="return" select="$return"&gt;&lt;/xsl:with-param&gt;
      &lt;/xsl:call-template&gt;
    &lt;/xsl:when&gt;
    &lt;xsl:otherwise&gt;
      &lt;xsl:choose&gt;
        &lt;xsl:when test="$return = 'A'"&gt;
          &lt;xsl:value-of select="$trimmed.uriA"&gt;&lt;/xsl:value-of&gt;
        &lt;/xsl:when&gt;
        &lt;xsl:otherwise&gt;
          &lt;xsl:value-of select="$trimmed.uriB"&gt;&lt;/xsl:value-of&gt;
        &lt;/xsl:otherwise&gt;
      &lt;/xsl:choose&gt;
    &lt;/xsl:otherwise&gt;
  &lt;/xsl:choose&gt;
&lt;/xsl:template&gt;
</pre>

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