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<?xml version="1.0" encoding="utf-8"?>
<!-- AUTHOR: Chris Mungall cjm at fruitfly dot org -->
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output indent="yes" method="xml"/>
<!-- index everything with an ID attribute -->
<xsl:key name="k-macro" match="//*" use="@id"/>
<!-- match everything -->
<xsl:template match="/ | @* | node()">
<xsl:choose>
<!-- replace terminal xxx_id elements with expanded macro -->
<xsl:when test="contains(name(.),'_id') and not(*)">
<xsl:if test="not(key('k-macro',.))">
<xsl:message>No such ID: <xsl:value-of select="."/></xsl:message>
</xsl:if>
<!-- fetch expansion term from ID index -->
<xsl:copy>
<xsl:variable name="macro" select="key('k-macro',.)"/>
<!-- recursively process macros (removing id attr) -->
<xsl:for-each select="$macro">
<xsl:copy>
<xsl:apply-templates select="$macro/*"/>
</xsl:copy>
</xsl:for-each>
</xsl:copy>
</xsl:when>
<xsl:when test="count(@id)">
<!-- remove existing macros (a macro is anything with id attr) -->
</xsl:when>
<xsl:otherwise>
<!-- recursively apply this same template again -->
<xsl:copy>
<xsl:apply-templates select="@* | node()" />
</xsl:copy>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
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