Adding filename information to XML during XSLT

Author: Kasper Graversen, 26/05/08 Keywords: XSLT, XML, Search-replace in XML, ANT Abstract: Guide on how to add filename information to xml files during xslt, how to search and replace during xslt and ultimately, how to insert social bookmarking urls into xml documents.

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Adding filename information to XML during XSLT

Step 1: Getting meta information into the xsl

<xslt basedir="${dir.xml}"
  includes="**/*.xml"
  ...
  filenameparameter="filename"
  filedirparameter="filedir">

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
 <xsl:param name="filename"></xsl:param>
 <xsl:param name="filedir">.</xsl:param>

The current file is http://foo.com/<xsl:value-of select="$filedir"/>/<xsl:value-of select="$filename"/>

Step 2: Search and replace the xml content

<!-- START - reusable replace-string function -->
<xsl:template name="replace-string">
<xsl:param name="text"/>
<xsl:param name="from"/>
<xsl:param name="to"/>
<xsl:choose>
    <xsl:when test="contains($text, $from)">
        <xsl:variable name="before" select="substring-before($text, $from)"/>
        <xsl:variable name="after" select="substring-after($text, $from)"/>
        <xsl:variable name="prefix" select="concat($before, $to)"/>

        <xsl:value-of select="$before"/>
        <xsl:value-of select="$to"/>
        <xsl:call-template name="replace-string">
            <xsl:with-param name="text" select="$after"/>
            <xsl:with-param name="from" select="$from"/>
            <xsl:with-param name="to" select="$to"/>
        </xsl:call-template>
    </xsl:when>
    <xsl:otherwise>
        <xsl:value-of select="$text"/>
    </xsl:otherwise>
</xsl:choose>
</xsl:template>
<!-- END - reusable replace-string function -->

Step 3: Define the html filename

<!-- calculate the html path -->
<xsl:param name="URLHtmlFile">http://firstclassthoughts.co.uk/<xsl:value-of select="$filedir"/>/<xsl:call-template name="replace-string">
<xsl:with-param name="text"><xsl:value-of select="$filename"/></xsl:with-param>
<xsl:with-param name="from">.xml</xsl:with-param><xsl:with-param name="to" >.html</xsl:with-param>
</xsl:call-template>
</xsl:param>

The current page is <xsl:value-of select="$URLHtmlFile"/>

<!--  digg reddit -->
<xsl:text disable-output-escaping="yes">&amp;nbsp;</xsl:text>
 <xsl:template match="link">
   <xsl:element name="a">
     <xsl:attribute name="target">_blank</xsl:attribute>
     <xsl:attribute name="href">http://digg.com/submit?phase=2&amp;url=<xsl:value-of select="$URLHtmlFile"/>%26title%3D<xsl:value-of select="$docTitle"/></xsl:attribute>
     <img src="{$relpath}/webimg/share_digg.png" alt="save url at digg"/>
   </xsl:element>
</xsl:template>
<!--  digg reddit -->

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