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<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:db="http://docbook.org/ns/docbook"
exclude-result-prefixes="db"
>
<!-- ********************************************************************
********************************************************************
Copyright 2010-2022, Regina Obe
License: BSD-3-Clause
Purpose: This is an xsl transform that generates file list_aggregates.xml.xsl which
includes index listing of aggregate functions.
It uses xml reference sections from reference.xml to then be processed by docbook
******************************************************************** -->
<xsl:output method="xml" indent="yes" encoding="utf-8" />
<!-- We deal only with the reference chapters -->
<xsl:template match="/">
<xsl:apply-templates select="/db:book/db:chapter[contains(@xml:id, 'reference')]" />
</xsl:template>
<xsl:template match="/">
<itemizedlist>
<!-- Pull out the purpose section for each ref entry and strip whitespace and put in a variable to be tagged unto each function comment -->
<xsl:for-each select='//db:refentry'>
<xsl:sort select="db:refnamediv/db:refname"/>
<xsl:variable name='comment'>
<xsl:value-of select="normalize-space(translate(translate(db:refnamediv/db:refpurpose,'
', ' '), '	', ' '))"/>
</xsl:variable>
<xsl:variable name="refid">
<xsl:value-of select="@xml:id" />
</xsl:variable>
<xsl:variable name="refname">
<xsl:value-of select="db:refnamediv/db:refname" />
</xsl:variable>
<!-- For each function prototype if it takes a geometry set then catalog it as an aggregate function -->
<xsl:if test=".//db:paramdef[contains(db:type, 'set')]">
<listitem>
<simpara>
<link linkend="{$refid}"><xsl:value-of select="$refname" /></link> - <xsl:value-of select="$comment" />
</simpara>
</listitem>
</xsl:if>
</xsl:for-each>
</itemizedlist>
</xsl:template>
</xsl:stylesheet>
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