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<?xml version="1.0"?>
<!-- This file is part of dvisvgm -->
<!-- Copyright (C) 2015-2022 Martin Gieseking <martin.gieseking@uos.de> -->
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:date="http://exslt.org/dates-and-times"
xmlns:func="http://exslt.org/functions"
xmlns:my="my-namespace"
exclude-result-prefixes="my"
extension-element-prefixes="date func">
<xsl:output doctype-public="-//OASIS//DTD DocBook XML V4.5//EN" doctype-system="http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd"/>
<!-- adapt ISO date created by keyword expansion -->
<xsl:template match="refentryinfo/date | revision[1]/date">
<date>
<xsl:value-of select="my:extract-date(.)"/>
</date>
</xsl:template>
<!-- add date to refmeta element -->
<xsl:template match="refmeta">
<xsl:copy>
<xsl:copy-of select="*"/>
<refmiscinfo class="date">
<xsl:value-of select="my:extract-date(../refentryinfo/date)"/>
</refmiscinfo>
</xsl:copy>
</xsl:template>
<func:function name="my:extract-date">
<xsl:param name="isodate"/>
<xsl:variable name="shortdate" select="substring($isodate, 1, 10)"/>
<xsl:choose>
<xsl:when test="translate($shortdate, '0123456789', '##########') = '####-##-##'">
<!-- use date part of expanded keyword -->
<func:result select="$shortdate"/>
</xsl:when>
<xsl:otherwise>
<!-- use current date as fallback -->
<func:result select="substring(date:date(), 1, 10)"/>
</xsl:otherwise>
</xsl:choose>
</func:function>
<!-- copy everything else unchanged -->
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
</xsl:copy>
</xsl:template>
</xsl:stylesheet>
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