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<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet
version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xalan="http://xml.apache.org/xalan"
xmlns:InputXSLT="function.inputxslt.application"
exclude-result-prefixes="xalan InputXSLT"
>
<xsl:template name="plain_formatter">
<xsl:param name="format"/>
<xsl:param name="source"/>
<xsl:copy-of select="InputXSLT:external-command(
$format,
$source
)/self::command/node()"/>
</xsl:template>
<xsl:template name="math_highlighter">
<xsl:param name="source"/>
<xsl:param name="arguments"/>
<xsl:variable name="formatted_expression">
<xsl:call-template name="plain_formatter">
<xsl:with-param name="format">
<xsl:text>katex </xsl:text>
<xsl:value-of select="$arguments"/>
</xsl:with-param>
<xsl:with-param name="source" select="$source"/>
</xsl:call-template>
</xsl:variable>
<xsl:copy-of select="xalan:nodeset($formatted_expression)/node()"/>
</xsl:template>
<xsl:template name="code_highlighter">
<xsl:param name="source"/>
<xsl:param name="language"/>
<xsl:variable name="formatted_code">
<xsl:call-template name="plain_formatter">
<xsl:with-param name="format">
<xsl:text>highlight --out-format=xhtml --inline-css --style=molokai --fragment --enclose-pre --wrap-simple --syntax=</xsl:text>
<xsl:value-of select="$language"/>
</xsl:with-param>
<xsl:with-param name="source" select="$source"/>
</xsl:call-template>
</xsl:variable>
<pre>
<xsl:copy-of select="xalan:nodeset($formatted_code)/pre/node()"/>
</pre>
</xsl:template>
<xsl:template match="@*|node()" mode="embellish">
<xsl:copy>
<xsl:apply-templates select="@*|node()" mode="embellish"/>
</xsl:copy>
</xsl:template>
<xsl:template match="h2" mode="embellish">
<h3>
<xsl:apply-templates select="node()" mode="embellish"/>
</h3>
</xsl:template>
<xsl:template match="h3" mode="embellish">
<h4>
<xsl:apply-templates select="node()" mode="embellish"/>
</h4>
</xsl:template>
<xsl:template match="pre" mode="embellish">
<xsl:call-template name="code_highlighter">
<xsl:with-param name="source" select="code/text()"/>
<xsl:with-param name="language">
<xsl:choose>
<xsl:when test="code/@class">
<xsl:value-of select="substring(code/@class, 10, string-length(code/@class))"/>
</xsl:when>
<xsl:otherwise>
<xsl:text>txt</xsl:text>
</xsl:otherwise>
</xsl:choose>
</xsl:with-param>
</xsl:call-template>
</xsl:template>
<xsl:template match="script" mode="embellish">
<xsl:choose>
<xsl:when test="contains(@type, 'mode=display')">
<p class="math">
<xsl:call-template name="math_highlighter">
<xsl:with-param name="source" select="text()"/>
<xsl:with-param name="arguments">
<xsl:text>--display-mode</xsl:text>
</xsl:with-param>
</xsl:call-template>
</p>
</xsl:when>
<xsl:otherwise>
<span class="math">
<xsl:call-template name="math_highlighter">
<xsl:with-param name="source" select="text()"/>
</xsl:call-template>
</span>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name="formatter">
<xsl:param name="source"/>
<xsl:variable name="content">
<xsl:call-template name="plain_formatter">
<xsl:with-param name="format">kramdown</xsl:with-param>
<xsl:with-param name="source" select="$source"/>
</xsl:call-template>
</xsl:variable>
<xsl:apply-templates select="xalan:nodeset($content)" mode="embellish"/>
</xsl:template>
</xsl:stylesheet>
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