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xmark.xsl
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xmark.xsl
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<?xml version="1.0" encoding="UTF-8"?>
<!--
XMARK
XSLT Stylesheet to generate tufte-css styled web pages from CommonMark documents.
(C) 2016 Antonio Vieiro. MIT License.
-->
<xsl:stylesheet xmlns:xsl='http://www.w3.org/1999/XSL/Transform' xmlns:cm='http://commonmark.org/xml/1.0' xmlns:html='http://www.w3.org/1999/xhtml' version='1.1' exclude-result-prefixes='xsl cm html'>
<xsl:output indent='no' version='1.0' omit-xml-declaration='yes' encoding='UTF-8' method='xml' />
<xsl:strip-space elements='cm:heading cm:paragraph cm:text cm:link cm:emph pre'/>
<!-- options to generate table of contents and to include syntax highlighting -->
<xsl:param name="generate.toc" select="'yes'"/>
<xsl:param name='highlight' select="'yes'" />
<!-- title and subtitle -->
<xsl:variable name='title' select='/cm:document/cm:heading[@level = "1"][1]' />
<xsl:variable name='subtitle' select='/cm:document/cm:heading[@level = "2"][1]' />
<!-- entry point to common mark document (cm:document) -->
<xsl:template match="cm:document">
<!-- <!DOCTYPE html> -->
<xsl:text disable-output-escaping='yes'><!DOCTYPE html></xsl:text>
<html>
<head>
<xsl:if test='not($highlight = "no")'>
<link rel="stylesheet" href="http://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.1.0/styles/default.min.css" />
</xsl:if>
<link rel="stylesheet" href="tufte-css/tufte.css"/>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title><xsl:value-of select='$title/cm:text/text()' /></title>
<style type="text/css">
.toc-3 { margin-left: 2rem; }
.toc-4 { margin-left: 4rem; }
</style>
</head>
<body>
<article>
<h1><xsl:value-of select='$title/cm:text/text()' /></h1>
<p class='subtitle'><xsl:value-of select='$subtitle/cm:text/text()'/></p>
<!-- Include TOC or not as a margin note -->
<xsl:if test='not($generate.toc = "no")'>
<p>
<label for='toc' class='margin-toggle'>⊕ Table of Contents</label>
<xsl:element name='input'>
<xsl:attribute name='id'>toc</xsl:attribute>
<xsl:attribute name='type'>checkbox</xsl:attribute>
<xsl:attribute name='class'>margin-toggle</xsl:attribute>
</xsl:element>
<span class='marginnote'>
<strong>Table of Contents</strong><br />
<xsl:apply-templates select="//cm:heading" mode="toc"/>
</span>
</p>
</xsl:if>
<xsl:apply-templates/>
</article>
<xsl:if test='not($highlight = "no")'>
<script src='http://cdnjs.cloudflare.com/ajax/libs/highlight.js/9.1.0/highlight.min.js'>//</script>
<script>
try {
hljs.initHighlightingOnLoad();
} catch(e) {
console.log(e);
}
</script>
</xsl:if>
</body>
</html>
</xsl:template>
<!-- heading entry for toc -->
<xsl:template match="cm:heading" mode="toc">
<!-- Ignore title and subtitle headings -->
<xsl:if test='. != $title and . != $subtitle'>
<xsl:element name="a">
<xsl:attribute name='class'>toc-<xsl:value-of select='@level' /></xsl:attribute>
<xsl:attribute name="href">#<xsl:value-of select="generate-id(.)"/></xsl:attribute>
<xsl:for-each select="cm:text">
<xsl:value-of select="text()"/>
</xsl:for-each>
</xsl:element>
<br />
</xsl:if>
</xsl:template>
<!-- heading entry for normal processing -->
<xsl:template match="cm:heading">
<!-- Ignore title and subtitle headings -->
<xsl:if test='. != $title and . != $subtitle'>
<xsl:element name="h{@level}">
<xsl:attribute name="id">
<xsl:value-of select="generate-id(.)"/>
</xsl:attribute>
<xsl:apply-templates/>
</xsl:element>
</xsl:if>
</xsl:template>
<!-- paragraphs -->
<xsl:template match="cm:paragraph">
<p><xsl:apply-templates/></p>
</xsl:template>
<!-- block quotes and epigraphs -->
<xsl:template match='cm:block_quote'>
<xsl:choose>
<!-- if block_quote followed by another block_quote then this is an epigraph -->
<xsl:when test='*[self::cm:block_quote]'>
<div class='epigraph'>
<blockquote>
<xsl:apply-templates select='*[self::cm:block_quote]/*' />
</blockquote>
</div>
</xsl:when>
<!-- if block_quote followed by non block_quote then 'blockquote' -->
<xsl:otherwise>
<blockquote>
<xsl:apply-templates select='*[not(self::cm:block_quote)]' />
</blockquote>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<!-- text nodes -->
<xsl:template match="cm:text">
<xsl:value-of select="text()"/>
</xsl:template>
<!-- links -->
<xsl:template match="cm:link">
<xsl:choose>
<!-- sidenote urls -->
<xsl:when test='starts-with(@destination, "sidenote")'>
<xsl:variable name='sidenote-id'>
<xsl:value-of select='generate-id(.)' />
</xsl:variable>
<label for='{$sidenote-id}' class='margin-toggle sidenote-number'></label>
<xsl:element name='input'>
<xsl:attribute name='id'><xsl:value-of select='$sidenote-id' /></xsl:attribute>
<xsl:attribute name='type'>checkbox</xsl:attribute>
<xsl:attribute name='class'>margin-toggle</xsl:attribute>
<span class='sidenote'>
<xsl:apply-templates />
</span>
</xsl:element>
</xsl:when>
<!-- margin urls -->
<xsl:when test='starts-with(@destination, "margin")'>
<xsl:variable name='sidenote-id'>
<xsl:value-of select='generate-id(.)' />
</xsl:variable>
<label for='{$sidenote-id}' class='margin-toggle'>⊕</label>
<xsl:element name='input'>
<xsl:attribute name='id'><xsl:value-of select='$sidenote-id' /></xsl:attribute>
<xsl:attribute name='type'>checkbox</xsl:attribute>
<xsl:attribute name='class'>margin-toggle</xsl:attribute>
<span class='marginnote'>
<xsl:apply-templates />
</span>
</xsl:element>
</xsl:when>
<!-- other normal urls -->
<xsl:otherwise>
<xsl:element name="a">
<xsl:attribute name="href">
<xsl:value-of select="@destination"/>
</xsl:attribute>
<xsl:attribute name="title">
<xsl:value-of select="@title"/>
</xsl:attribute>
<xsl:apply-templates/>
</xsl:element>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<!-- code spans (inline) -->
<xsl:template match='cm:code'>
<span class='code'>
<xsl:value-of select='text()' />
</span>
</xsl:template>
<!-- code blocks -->
<xsl:template match='cm:code_block'>
<pre class='code'>
<xsl:element name='code'>
<xsl:choose>
<xsl:when test='@info != ""'>
<xsl:attribute name='class'>language-<xsl:value-of select='@info'/> code</xsl:attribute>
</xsl:when>
<xsl:otherwise>
<xsl:attribute name='class'>nohighlight code</xsl:attribute>
</xsl:otherwise>
</xsl:choose>
<xsl:value-of select='text()' />
</xsl:element>
</pre>
</xsl:template>
<!-- lists -->
<xsl:template match="cm:list">
<xsl:choose>
<xsl:when test="@type = "ordered"">
<xsl:element name="ol">
<xsl:attribute name="start">
<xsl:value-of select="@start"/>
</xsl:attribute>
<xsl:apply-templates/>
</xsl:element>
</xsl:when>
<xsl:when test="@type = "bullet"">
<ul>
<xsl:apply-templates/>
</ul>
</xsl:when>
</xsl:choose>
</xsl:template>
<!-- list items -->
<xsl:template match="cm:item">
<li>
<xsl:apply-templates/>
</li>
</xsl:template>
<!-- softbreaks -->
<xsl:template match="cm:softbreak">
<xsl:text>
</xsl:text>
</xsl:template>
<!-- images -->
<xsl:template match="cm:image">
<!-- figure number -->
<xsl:variable name="fignumber" select="1+count(./preceding::cm:image)"/>
<xsl:choose>
<!-- margin figures -->
<xsl:when test='starts-with(@title, "margin")'>
<xsl:variable name='sidenote-id'><xsl:value-of select='generate-id(.)' /></xsl:variable>
<label for='{$sidenote-id}' class='margin-toggle'>⊕</label>
<xsl:element name='input'>
<xsl:attribute name='id'><xsl:value-of select='$sidenote-id' /></xsl:attribute>
<xsl:attribute name='type'>checkbox</xsl:attribute>
<xsl:attribute name='class'>margin-toggle</xsl:attribute>
<span class='marginnote'>
<xsl:element name="img">
<xsl:attribute name="src">
<xsl:value-of select="@destination"/>
</xsl:attribute>
<xsl:attribute name="title">
<xsl:value-of select='substring-after(@title, "margin")'/>
</xsl:attribute>
</xsl:element>
<xsl:apply-templates />
</span>
</xsl:element>
</xsl:when>
<xsl:otherwise>
<xsl:element name='figure'>
<!-- full width figures -->
<xsl:if test='starts-with(@title, "fullwidth")'>
<xsl:attribute name='class'>fullwidth</xsl:attribute>
</xsl:if>
<xsl:element name="img">
<xsl:attribute name="src">
<xsl:value-of select="@destination"/>
</xsl:attribute>
<xsl:attribute name="title">
<xsl:choose>
<xsl:when test='starts-with(@title, "fullwidth")'>
<xsl:value-of select='substring-after(@title, "fullwidth")'/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="@title"/>
</xsl:otherwise>
</xsl:choose>
</xsl:attribute>
</xsl:element>
<figcaption>
Fig. <xsl:value-of select='$fignumber' />. <xsl:apply-templates/>
</figcaption>
</xsl:element>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<!-- strong and em -->
<xsl:template match="cm:strong">
<strong>
<xsl:apply-templates/>
</strong>
</xsl:template>
<xsl:template match="cm:emph">
<em>
<xsl:apply-templates/>
</em>
</xsl:template>
<!--
Hack template to generate HTML elements from escaped stuff
>/hola> will generate </hola>
-->
<xsl:template name='html-end'>
<xsl:param name='text' />
<xsl:choose>
<xsl:when test='contains($text, ">")'>
<xsl:value-of select='substring-before($text, ">")' />
<xsl:text disable-output-escaping='yes'>></xsl:text>
<xsl:call-template name='html-start'>
<xsl:with-param name='text' select='substring-after($text, ">")' />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:call-template name='html-start'>
<xsl:with-param name='text' select='$text' />
</xsl:call-template>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<!--
template function to generate a start element
&myhtml; will generate <myhtml>
-->
<xsl:template name='html-start'>
<xsl:param name='text' />
<xsl:choose>
<xsl:when test='contains($text, "<")'>
<xsl:value-of select='substring-before($text, "<")' />
<xsl:text disable-output-escaping='yes'><</xsl:text>
<xsl:call-template name='html-end'>
<xsl:with-param name='text' select='substring-after($text, "<")' />
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select='$text' />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<!-- custom HTML entries in markdown are processed here -->
<xsl:template match="cm:html_block">
<xsl:call-template name='html-start'>
<xsl:with-param name='text' select='text()' />
</xsl:call-template>
<xsl:apply-templates />
<!--
Commonmark translates escapes HTML stuff in the XML tree, so, for instance
<aside> becomes <aside>
We would like to replace all < with < and > with > but this is challenging in XSL.
Mainly because XSL forbits '<' in attribute values to avoid the resulting XML being
malformed.
-->
</xsl:template>
<xsl:template match="text()"/>
</xsl:stylesheet>