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<?xml version="1.0" standalone="yes"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:exslt="http://exslt.org/common">
<xsl:output method="text" encoding="utf-8"/>
<xsl:strip-space elements="*"/>
<!-- https://stackoverflow.com/questions/38053426/how-to-find-the-difference-between-two-xml-in-xslt -->
<xsl:template name="attribute-value-mismatch">
<xsl:param name="attributes1" />
<xsl:param name="attributes2" />
<attribute-match>
<xsl:if test="(count($attributes1) != count($attributes2))">
<attribute />
</xsl:if>
<xsl:if test="(count($attributes1) = count($attributes2))">
<xsl:for-each select="$attributes1">
<xsl:variable name="attribute1" select="."/>
<xsl:variable name="result">
<attroot>
<xsl:for-each select="$attributes2">
<xsl:if test="name(.) = name($attribute1/.)">
<xsl:if test="not(. = $attribute1/.)">
<not-matched-name/>
</xsl:if>
</xsl:if>
<xsl:if test="name(.) != name($attribute1/.)">
<not-matched-name/>
</xsl:if>
</xsl:for-each>
</attroot>
</xsl:variable>
<xsl:if test="count(exslt:node-set($result)//not-matched-name) = count(exslt:node-set($attributes2))">
<attribute />
</xsl:if>
</xsl:for-each>
</xsl:if>
</attribute-match>
</xsl:template>
<xsl:template name="find-duplicates">
<xsl:param name="curr_rule"/>
<xsl:param name="other_rules"/>
<xsl:variable name="same_rules">
<xsl:for-each select="$other_rules">
<xsl:if test="local-name()=local-name($curr_rule)">
<xsl:variable name="attribute-mismatch">
<xsl:call-template name="attribute-value-mismatch">
<xsl:with-param name="attributes1" select="./@*"/>
<xsl:with-param name="attributes2" select="$curr_rule/@*"/>
</xsl:call-template>
</xsl:variable>
<xsl:value-of select="count(exslt:node-set($attribute-mismatch)//attribute)" />
<xsl:if test="count(exslt:node-set($attribute-mismatch)//attribute) = 0"><node/></xsl:if>
</xsl:if>
</xsl:for-each>
</xsl:variable>
<xsl:if test="count(exslt:node-set($same_rules)//node)">FAILED(assert) at /busconfig/policy[<xsl:value-of select="1 + count(parent::*/preceding-sibling::policy)"/>]/<xsl:value-of select="local-name($curr_rule)"/>[<xsl:value-of select="1 + count(preceding-sibling::*[local-name()=local-name(current())])"/>] : Duplicate rule.
</xsl:if>
</xsl:template>
<!-- user vs context -->
<xsl:template match="//policy[@user]/*">
<!-- we cannot compare with group policies as we don't know which group rules will be applied to the current user (TODO? supply a user->groups mapping )-->
<xsl:call-template name="find-duplicates">
<xsl:with-param name="curr_rule" select="."/>
<xsl:with-param name="other_rules" select="//policy[@context]/*"/>
</xsl:call-template>
</xsl:template>
<!-- group vs context -->
<xsl:template match="//policy[@group]/*">
<xsl:call-template name="find-duplicates">
<xsl:with-param name="curr_rule" select="."/>
<xsl:with-param name="other_rules" select="//policy[@context]/*"/>
</xsl:call-template>
</xsl:template>
<!-- context='default' vs context='mandatory' -->
<xsl:template match="//policy[@context='default']/*">
<xsl:call-template name="find-duplicates">
<xsl:with-param name="curr_rule" select="."/>
<xsl:with-param name="other_rules" select="//policy[@context='mandatory']/*"/>
</xsl:call-template>
</xsl:template>
</xsl:stylesheet>
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