Big-Data-HPC-Platform/esp/tools/scripts/coalesce.xslt

<?xml version="1.0" encoding="utf-8"?>
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    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
    You may obtain a copy of the License at

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<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output indent="yes"/>

<xsl:template match="/">
    <xsl:apply-templates select="*">
        <xsl:with-param name="n" select="*"/>
    </xsl:apply-templates>
</xsl:template>

<xsl:template match="*">
<xsl:param name="n"/>
     <xsl:variable name="name" select="name()"/>
    <xsl:variable name="s" select="$n[name()=$name]"/>
    <xsl:if test="count(.|$s[1])=1">
        <xsl:copy>
            <xsl:copy-of select="@*"/>
            <xsl:apply-templates select="$s/*">
                <xsl:with-param name="n" select="$s/*"/>
            </xsl:apply-templates>
        </xsl:copy>
    </xsl:if>
</xsl:template>

</xsl:stylesheet>