ecl/doc/xsl/add_indexterm.xml

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
		xmlns:a="http://docbook.org/ns/docbook"
		exclude-result-prefixes="a"
		version="1.0">
<xsl:output encoding="utf-8"/>

<!-- By default copy the whole document -->
<xsl:template match="node()|@*">
  <xsl:copy>
    <xsl:apply-templates select="node()|@*"/>
  </xsl:copy>
</xsl:template>

<xsl:template match="a:refsynopsisdiv">
  <xsl:for-each select=".//a:symbol">
    <xsl:element name="indexterm">
      <xsl:attribute name="type">cl</xsl:attribute>
      <primary><xsl:value-of select="."/></primary>
    </xsl:element>
  </xsl:for-each>
  <xsl:for-each select=".//a:funcsynopsis//a:function|
			.//a:synopsys//a:type|
			.//a:synopsys//a:variable|
			.//a:synopsys//a:constant">
    <xsl:if test="string-length(attribute::role)=0">
      <xsl:element name="indexterm">
	<xsl:attribute name="type">c</xsl:attribute>
	<primary><xsl:value-of select="."/></primary>
      </xsl:element>
    </xsl:if>
  </xsl:for-each>
  <xsl:copy-of select="."/>
</xsl:template>

<!--
<xsl:template match="a:symbol" mode="automatic">
  <xsl:copy-of select="."/>
  <indexterm type="cl">
    <primary><xsl:value-of select="."/></primary>
  </indexterm>
</xsl:template>

<xsl:template match="a:function" mode="automatic">
  <xsl:copy-of select="."/>
  <indexterm type="c">
    <primary><xsl:value-of select="."/></primary>
  </indexterm>
</xsl:template>

<xsl:template match="a:variable" mode="automatic">
  <xsl:copy-of select="."/>
  <indexterm type="c">
    <primary><xsl:value-of select="."/></primary>
  </indexterm>
</xsl:template>

<xsl:template match="a:type" mode="automatic">
  <xsl:copy-of select="."/>
  <indexterm type="c">
    <primary><xsl:value-of select="."/></primary>
  </indexterm>
</xsl:template>
-->

</xsl:stylesheet>