• Removed some obsolete comments, and tidied others. • Removed unused code.

nigel.stanger / XML

Browse code • Removed some obsolete comments, and tidied others. • Removed unused code. master
1 parent b5b8edd commit a1ddd387071a44fd73c4d50cbdad4157bade1b10 Nigel Stanger authored on 12 Feb 2016

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          xml2xslt.xsl
 	<!--
		XSLT transformation for a master XML document defining how to transform elements in the course handbook source into HTML and LaTeX.  Hmm, meta-stylesheet?!
	-->
	
	<!--	<xsl:output method="text" encoding="utf-8" media-type="text/xml" /> -->
	<xsl:output method="xml" encoding="utf-8" cdata-section-elements="html" />
 
	<!--
		What target format are we generating a styesheet for?
	<!--
		Define an alias for the xsl namespace to avoid confusion when generating xsl: elements in the output of this stylesheet.
	-->
	<xsl:namespace-alias stylesheet-prefix="xsl-out" result-prefix="xsl" />
 
	<!--
		Some useful variables. (Could some of these become callable templates?)
	-->
	
	
	<!-- Some useful variables. (Could some of these become callable templates?) -->
	<xsl:variable name="newline">
<xsl:text>
</xsl:text>
	</xsl:variable>
 
	<xsl:variable name="space"><xsl:text> </xsl:text></xsl:variable>
	
 
	
    <!-- *** TEMPLATES *** -->
    
	<xsl:template match="/">
		
		<xsl-out:stylesheet version="2.0">
		
		<xsl-out:param name="base-path"><xsl:text>.</xsl:text></xsl-out:param>
		
		<!-- Full period string corresponding to the supplied period code. -->
		<xsl-out:variable name="period-string" select="infosci:expand-period-code( $period-code )" />
<!-- 
			<xsl-out:choose>
				<xsl-out:when test="$period-code = 'SS'">
					<xsl-out:text>Summer School</xsl-out:text>
				</xsl-out:when>
				<xsl-out:when test="$period-code = 'S1'">
					<xsl-out:text>Semester One</xsl-out:text>
				</xsl-out:when>
				<xsl-out:when test="$period-code = 'S2'">
					<xsl-out:text>Semester Two</xsl-out:text>
				</xsl-out:when>
				<xsl-out:when test="$period-code = 'FY'">
					<xsl-out:text>Full Year</xsl-out:text>
				</xsl-out:when>
				<xsl-out:otherwise>
					<xsl-out:message terminate="yes">
						<xsl-out:text>Unrecognised period code "</xsl-out:text>
						<xsl-out:value-of select="$period-code" />
						<xsl-out:text>".</xsl-out:text>
					</xsl-out:message>
				</xsl-out:otherwise>
			</xsl-out:choose>
		</xsl-out:variable>
 -->
		
		<!-- The date and time when the document was last built. -->
		<xsl-out:variable name="date-built"		select="current-dateTime()" />
		
		<xsl-out:variable name="document-name"	select="reverse( tokenize( base-uri(), '/' ) )[1]" />
 
		<!-- Include the generated Oracle documentation code. -->
		<xsl-out:include href="oracle-docs.xsl" />
 
		<!-- Include the generated teaching calendar dates. -->
<!-- 
		<xsl-out:include href="calendar_dates.xsl" />
 -->
 
		<!--
			We're going to use the text encoding in a few different places, so let's work out what it should be now.
		-->
			
			</xsl:choose>
		</xsl:variable>
 
		<!-- root-level documents should say what type/class of document they are (lecture, tutorial, generic, ...).  Do we want to call this a class or a type? -->
		<!--
		<xsl:variable name="doctype"><xsl:value-of select="/document/@type" /></xsl:variable>
		-->
		
		<!--
			First, output the document preamble according to target format. This is generally different for each target format.
		-->
		<xsl:choose>
			<xsl:when test="($target-format = 'html') or ($target-format = 'xhtml')">
			
				<!-- *** (X)HTML Output *** -->
				
				<!-- Old version: before using xsl:namespace-alias: -->
				<!--
				<xsl-out:element name="xsl:output">
					<xsl-out:attribute name="method">html</xsl-out:attribute>
					<xsl-out:attribute name="encoding">UTF-8</xsl-out:attribute>
					<xsl-out:attribute name="media-type">text/html</xsl-out:attribute>
					<xsl-out:attribute name="doctype-public">-//W3C//DTD HTML 4.01 Transitional//EN</xsl-out:attribute>
				</xsl-out:element>
				-->
				
				<!-- Default to PNG images for web dispay. -->
				<xsl-out:param name="image-format"><xsl:text>png</xsl:text></xsl-out:param>
 
			<!-- Nope, includes can only appear as a child of xsl:stylesheet. -->
			<!-- <xsl-out:include href="xml2html-root.xsl" /> -->
				
				<xsl-out:template match="/document">
					<xsl-out:comment> THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT! </xsl-out:comment>
					<html>
						<head>
				<xsl-out:param name="image-format"><xsl:text>pdf</xsl:text></xsl-out:param>
				
				<!--
				    Generate macro to encode the document class name.
				    This is currently BROKEN. If the document class specified loads packages that are then loaded by the boilerplate below with different optons, it will cause LaTeX "option clash" errors. Therefore, DO NOT use the @latex-document-class attribute for now until a solution can be devised!
				    This is currently BROKEN. If the specified document class loads packages that are then loaded by the boilerplate below with different optons, it will cause LaTeX "option clash" errors. Therefore, DO NOT use the @latex-document-class attribute for now until a solution can be devised!
				-->
				<xsl-out:template name="setup-document-class">
					<xsl-out:text>
\def\DocumentClass{</xsl-out:text>
				    <xsl-out:text>}
</xsl-out:text>
				</xsl-out:template>
 
				<!-- *** LaTeX Source Output *** -->
				<!-- Should this produce a LaTeX source fragment or an entire valid source document? -->
				<!-- *** (Xe)LaTeX Source Output *** -->
				
				<xsl-out:template match="/document">
					<xsl-out:choose>
 
						<!-- standalone = "yes" means generate an entire valid (Xe)LaTeX source document. -->
						<xsl-out:when test="$standalone = 'yes'">
							<xsl-out:text>
% THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT!
 
								</xsl-out:call-template>
							</xsl-out:if>
							<xsl-out:text>\end{document}</xsl-out:text>
						</xsl-out:when>
						<!-- Not standalone: -->
						
						<!-- standalone = "no" means generate a (Xe)LaTeX source fragment. -->
						<xsl-out:otherwise>
							<xsl-out:apply-templates select="title" mode="chapter" />
							<xsl-out:apply-templates select="*[not(self::title)]" />
							<xsl-out:if test="not( @auto-latex-build-date ) or ( @auto-latex-build-date != 'no' )">
	</xsl:template>
 
	
	<!--
		This template produces a template that calls another template, i.e.
		it implements a template alias.
		
		The generated template probably doesn't need a name, but we'll put one
		in anyway.
	-->
 
		This template produces a template that calls another template, i.e., it implements a template alias.
		
		The generated template probably doesn't need a name, but we'll put one in anyway.
	-->
	<xsl:template match="alias">
		<xsl-out:template>
			<xsl:attribute name="name"><xsl:value-of select="@source" /></xsl:attribute>
			<xsl:attribute name="match"><xsl:value-of select="@source" /></xsl:attribute>
		</xsl-out:template>
	</xsl:template>
	
 
	<!--
		This template produces a template for processing style-oriented markup,
		such as empahsis, foreign terms, and quotations.
	-->
	<!--
	<xsl:template match="d">
	</xsl-out:template match>
	-->
 
	<!--
		This template produces a template for processing an element that
		refers to a hyperlink.
	-->
	<xsl:template match="hyperlink">
	</xsl:template>
	
</xsl:stylesheet>

            <?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet	version="2.0"
				xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
				xmlns:xsl-out="[irrelevant]"
				xmlns:xs="http://www.w3.org/2001/XMLSchema"
				xmlns:infosci="http://info-nts-12.otago.ac.nz/infosci">

	<!--
		XSLT transformation for a master XML document defining how to transform elements in the course handbook source into HTML and LaTeX.  Hmm, meta-stylesheet?!
	-->
	
	<xsl:output method="xml" encoding="utf-8" cdata-section-elements="html" />

	<!--
		What target format are we generating a styesheet for?
		Possible values: html, xhtml, latex (includes pdflatex), xelatex.
	-->
	<xsl:param name="target-format"><xsl:text>html</xsl:text></xsl:param>

	<!--
		Define an alias for the xsl namespace to avoid confusion when generating xsl: elements in the output of this stylesheet.
	-->
	<xsl:namespace-alias stylesheet-prefix="xsl-out" result-prefix="xsl" />
	
	
	<!-- Some useful variables. (Could some of these become callable templates?) -->
	<xsl:variable name="newline">
<xsl:text>
</xsl:text>
	</xsl:variable>

	<xsl:variable name="space"><xsl:text> </xsl:text></xsl:variable>
	
	
    <!-- *** TEMPLATES *** -->
    
	<xsl:template match="/">
		
		<xsl-out:stylesheet version="2.0">
		
		<xsl-out:strip-space elements="*" />

		<xsl-out:param name="subject-code"><xsl:text>INFO</xsl:text></xsl-out:param>
		<xsl-out:param name="paper-number" />
		<xsl-out:param name="paper-year"		select="year-from-date( current-date() )"/>
		<xsl-out:param name="period-code" />
		
		<xsl-out:param name="showanswers"><xsl:text>no</xsl:text></xsl-out:param>
		
		<xsl-out:param name="base-path"><xsl:text>.</xsl:text></xsl-out:param>
		
		<!-- Full period string corresponding to the supplied period code. -->
		<xsl-out:variable name="period-string" select="infosci:expand-period-code( $period-code )" />
		
		<!-- The date and time when the document was last built. -->
		<xsl-out:variable name="date-built"		select="current-dateTime()" />
		
		<!-- Get the name of the document being processed. -->
		<xsl-out:variable name="document-name"	select="reverse( tokenize( base-uri(), '/' ) )[1]" />

		<!-- Include the generated Oracle documentation code. -->
		<xsl-out:include href="oracle-docs.xsl" />

		<!--
			We're going to use the text encoding in a few different places, so let's work out what it should be now.
		-->
		<xsl:variable name="text-encoding">
			<xsl:choose>
			
				<xsl:when test="($target-format = 'latex') or ($target-format = 'html')">
					<xsl:text>iso-8859-1</xsl:text>
				</xsl:when>
				
				<xsl:when test="($target-format = 'xelatex') or ($target-format = 'xhtml')">
					<xsl:text>utf-8</xsl:text>
				</xsl:when>
				
				<xsl:otherwise>
					<xsl:message terminate="yes">
						<xsl:text>Sorry, unknown target format: </xsl:text><xsl:value-of select="$target-format" />
					</xsl:message>
				</xsl:otherwise>
			
			</xsl:choose>
		</xsl:variable>

		<!--
			First, output the document preamble according to target format. This is generally different for each target format.
		-->
		<xsl:choose>
			
			<!--
				The HTML formats are fairly simple: the only things that change are the doctypes, version number and text encoding.
			-->
			<xsl:when test="$target-format = 'html'">
			
				<xsl-out:output
					method="html"
					encoding="{$text-encoding}"
					version="4.01"
					media-type="text/html"
					doctype-public="-//W3C//DTD HTML 4.01 Transitional//EN"
					doctype-system="http://www.w3.org/TR/html4/loose.dtd"
				/>
				
			</xsl:when>
			
			<xsl:when test="$target-format = 'xhtml'">
			
				<xsl-out:output
					method="xml"
					encoding="{$text-encoding}"
					byte-order-mark="no"
					version="1.1"
					media-type="text/html"
					doctype-public="-//W3C//DTD XHTML 1.1//EN"
					doctype-system="http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"
				/>
				
			</xsl:when>
			
			<!--
				The LaTeX formats, however have a bunch of miscellaneous boilerplate that appears at the start of every document, and requires more complex interleaving because of hyperref. Since we need to stuff this into a template later on, we define this using a callable template, so that we can do useful things like apply-templates within it (which wouldn't work if we just used a variable).
			-->
			<xsl:when test="$target-format = 'latex'">
			
				<xsl-out:output method="text" encoding="{$text-encoding}" media-type="text/plain" />	

				<!--
					Set to no if you want this to be included inside another
					document. Appears here because it's used in the document
					preamble.
				-->
				<xsl-out:param name="standalone"><xsl:text>yes</xsl:text></xsl-out:param>
				
				<xsl-out:template name="latex-preamble">
					<xsl-out:text>
\usepackage{mathpazo} % mathpple is deprecated
\usepackage[T1]{fontenc}
\usepackage{textcomp}
</xsl-out:text>

					<xsl-out:apply-templates select="environment/latex-packages" />

					<xsl-out:text>
% Safer to specify the hyperref options directly rather than relying on
% the default hyperref.cfg, as XeLaTeX seems to ignore it :(.
\usepackage[	pdfpagemode=UseNone,%
				colorlinks,%
				urlcolor=blue,%
				citecolor=blue,%
				linkcolor=blue,%
				breaklinks	]{hyperref}

\renewcommand{\ttdefault}{blg}
</xsl-out:text>
				</xsl-out:template>
				
			</xsl:when>
			
			<xsl:when test="$target-format = 'xelatex'">
			
				<xsl-out:output method="text" encoding="{$text-encoding}" media-type="text/plain" />	

				<!--
					Set to no if you want this to be included inside another
					document. Appears here because it's used in the document
					preamble.
				-->
				<xsl-out:param name="standalone"><xsl:text>yes</xsl:text></xsl-out:param>
				
				<xsl-out:template name="latex-preamble">
					<xsl-out:text>
\usepackage[no-math]{fontspec}
\usepackage{mathspec}
\usepackage{xunicode}
\usepackage{xltxtra}
\usepackage{textcomp} % ???
</xsl-out:text>

					<xsl-out:apply-templates select="environment/latex-packages" />
					
					<xsl-out:text>
% Safer to specify the hyperref options directly rather than relying on
% the default hyperref.cfg, as XeLaTeX seems to ignore it :(.
\usepackage[	pdfpagemode=UseNone,%
				colorlinks,%
				urlcolor=blue,%
				citecolor=blue,%
				linkcolor=blue,%
				breaklinks	]{hyperref}

\defaultfontfeatures{Mapping=tex-text}
\setmainfont{TeX Gyre Pagella}
\setmathsfont(Digits){TeX Gyre Pagella}
\setmonofont[Scale=MatchLowercase]{Letter Gothic 12 Pitch}
</xsl-out:text>
				</xsl-out:template>
				
			</xsl:when>
			
			<!--
				No need for an otherwise, as weird target formats will have already been trapped by the definition of the text-encoding variable above.
			-->
			
		</xsl:choose>
		
		<!--
			Next, output the main document body according to target format. This is generally the same across similar target formats.
		-->
		<xsl:choose>

			<xsl:when test="($target-format = 'html') or ($target-format = 'xhtml')">
			
				<!-- *** (X)HTML Output *** -->
				
				<!-- Default to PNG images for web dispay. -->
				<xsl-out:param name="image-format"><xsl:text>png</xsl:text></xsl-out:param>

				<xsl-out:template match="/document">
					<xsl-out:comment> THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT! </xsl-out:comment>
					<html>
						<head>
							<xsl-out:element name="link">
								<xsl-out:attribute name="rel">
									<xsl-out:text>Stylesheet</xsl-out:text>
								</xsl-out:attribute>
								<xsl-out:attribute name="href">
									<xsl-out:text>https://blackboard.otago.ac.nz/bbcswebdav/courses/</xsl-out:text>
									<xsl-out:value-of select="$subject-code" />
									<xsl-out:value-of select="$paper-number" />
									<xsl-out:text>_</xsl-out:text>
									<xsl-out:value-of select="$period-code" />
									<xsl-out:text>DNI_</xsl-out:text>
									<xsl-out:value-of select="$paper-year" />
									<xsl-out:text>/db_styles.css</xsl-out:text>
								</xsl-out:attribute>
								<xsl-out:attribute name="type">
									<xsl-out:text>text/css</xsl-out:text>
								</xsl-out:attribute>
							</xsl-out:element>
							<xsl-out:element name="meta">
								<xsl-out:attribute name="http-equiv">
									<xsl-out:text>Content-type</xsl-out:text>
								</xsl-out:attribute>
								<xsl-out:attribute name="content">
									<xsl-out:text>
										<xsl:text>text/html;charset=</xsl:text>
										<xsl:value-of select="$text-encoding" />
									</xsl-out:text>
								</xsl-out:attribute>
							</xsl-out:element>
							<title>
								<xsl-out:choose>
									<xsl-out:when test="@class = 'calendar'">
										<xsl-out:value-of select="$subject-code" />
										<xsl-out:value-of select="$paper-number" />
										<xsl-out:text> Teaching Calendar, </xsl-out:text>
										<xsl-out:value-of select="$period-string" />
										<xsl-out:text>, </xsl-out:text>
										<xsl-out:value-of select="$paper-year" />
									</xsl-out:when>
									<xsl-out:otherwise>
										<xsl-out:apply-templates select="title" mode="preamble" />
									</xsl-out:otherwise>
								</xsl-out:choose>
							</title>
						</head>
						<body>
							<xsl-out:choose>
								<xsl-out:when test="@class = 'calendar'" />
								<xsl-out:otherwise>
									<xsl-out:apply-templates select="title" mode="title" />
									<xsl-out:apply-templates select="date" mode="title" />
									<xsl-out:apply-templates select="due-date" mode="title" />
								</xsl-out:otherwise>
							</xsl-out:choose>
							<xsl-out:apply-templates />

							<!-- How best to approach this - certain elements that need special handling (e.g. title, author) shouldn't be passed through here as well. -->
							<!-- How about we just match certain elements that we know can be handled safely, e.g. sections, paragraphs, ...?  (...and their aliases?) -->
							<!-- Are introductions just another section, or should there be an introduction element? -->
							
							<!-- The solution is to get cleverer with our templates, e.g., multiple templates for <title> that have different match patterns (document/title, section/title). -->
							<!-- We also need to define an empty template for the <document-metadata> element so that its contents get ignored. -->
							<!-- Once these are done, we can just go apply-templates and forget about it. -->
							
							<hr />
							<!--
								Since HTML doesn't support footnotes as such, we
								instead include them as endnotes at the end of
								the document.
							-->
							<xsl-out:if test="count(//footnote) &gt; 0">
								<h3>Notes</h3>
								<xsl-out:apply-templates select="//footnote" mode="list" />
								<hr />
							</xsl-out:if>
							<xsl-out:call-template name="build-date-internal">
								<xsl-out:with-param name="format">long</xsl-out:with-param>
								<xsl-out:with-param name="style">footer</xsl-out:with-param>
							</xsl-out:call-template>
						</body>
					</html>
				</xsl-out:template>
			</xsl:when>

			<xsl:when test="($target-format = 'latex') or ($target-format = 'xelatex')">
			
				<!-- Set to pdf if using PDFLaTeX, otherwise eps. -->
				<xsl-out:param name="image-format"><xsl:text>pdf</xsl:text></xsl-out:param>
				
				<!--
				    Generate macro to encode the document class name.
				    This is currently BROKEN. If the specified document class loads packages that are then loaded by the boilerplate below with different optons, it will cause LaTeX "option clash" errors. Therefore, DO NOT use the @latex-document-class attribute for now until a solution can be devised!
				-->
				<xsl-out:template name="setup-document-class">
					<xsl-out:text>
\def\DocumentClass{</xsl-out:text>
                    <xsl-out:value-of select="@latex-document-class" />
                    <xsl-out:if test="not( @latex-document-class )">
                        <xsl-out:text>article</xsl-out:text>
                    </xsl-out:if>
				    <xsl-out:text>}
</xsl-out:text>
				</xsl-out:template>

				<!-- *** (Xe)LaTeX Source Output *** -->
				
				<xsl-out:template match="/document">
					<xsl-out:choose>

						<!-- standalone = "yes" means generate an entire valid (Xe)LaTeX source document. -->
						<xsl-out:when test="$standalone = 'yes'">
							<xsl-out:text>
% THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT!

</xsl-out:text>
							<xsl-out:call-template name="setup-document-class" />
							<xsl-out:text>
\PassOptionsToClass{\LaTeXOptions}{\DocumentClass}
\documentclass{\DocumentClass}

\usepackage[margin=1in]{geometry}
\usepackage{multirow}
\usepackage{graphicx}
\usepackage{verbatim}       % needed for \verbatiminput
\usepackage{relalg}         % needed for join operators
\usepackage{pifont}
\usepackage{siunitx}        % number and SI unit formatting
\usepackage{listings}       % nicely formatted code listings
\usepackage[normalem]{ulem} % fancy underlining, strikeout, etc.
\usepackage{boxedminipage}
\usepackage{parskip}        % Space-separated rather than indented paragraphs.
\usepackage{rotating}		% Rotate stuff.

</xsl-out:text>

							<xsl-out:call-template name="latex-preamble" />

							<xsl-out:apply-templates select="environment/latex-commands" />

							<xsl-out:text>
\newenvironment{answer}{\par\vspace{0.5em}\itshape}{\normalfont\vspace{1.5em}}

% Listings setup. We preload the most obviously like languages to speed things
% up. Other languages will still work, just not quite as quickly.
\lstloadlanguages{Oracle}
\lstset{basicstyle=\ttfamily,basewidth=0.5em,escapeinside={(@}{@)},
	showspaces=false,showstringspaces=false}

% Environment for worksheet exercises.
\newcounter{exercise}
\setcounter{exercise}{0}
\newenvironment{exercise}%
	{\noindent\refstepcounter{exercise}\begin{boxedminipage}{\columnwidth}\textbf{Exercise \theexercise: }}%
	{\end{boxedminipage}}

</xsl-out:text>

							<xsl-out:apply-templates select="title" mode="preamble" />
							<xsl-out:call-template name="newline-internal" />
							<xsl-out:apply-templates select="author" mode="preamble" />
							<xsl-out:call-template name="newline-internal" />
							<xsl-out:apply-templates select="date|due-date" mode="preamble" />
							<xsl-out:call-template name="newline-internal" />

							<xsl-out:text>
\begin{document}
</xsl-out:text>
                            <xsl-out:if test="not( @suppress-latex-title ) or ( @suppress-latex-title != 'yes' )">
                                <xsl-out:text>
	\maketitle
</xsl-out:text>
                            </xsl-out:if>
							<xsl-out:text>

</xsl-out:text>

							<xsl-out:apply-templates />

							<!--
								If you're having problems with the build date appearing in weird or annoying locations (usually because of floating items like tables and figures), set document/@auto-latex-build-date to "no". You can then use the build-date element to insert the build date wherever you like, if necessary. This really only applies to LaTeX documents. The behaviour of HTML documents is much more predictable because they don't have elements with "minds of their own", so the build date is guaranteed to always appear at the very end.
							-->
							<xsl-out:if test="not( @auto-latex-build-date ) or ( @auto-latex-build-date != 'no' )">
							
								<xsl-out:call-template name="build-date-internal">
									<xsl-out:with-param name="format">long</xsl-out:with-param>
									<xsl-out:with-param name="style">footer</xsl-out:with-param>
								</xsl-out:call-template>
							</xsl-out:if>
							<xsl-out:text>\end{document}</xsl-out:text>
						</xsl-out:when>
						
						<!-- standalone = "no" means generate a (Xe)LaTeX source fragment. -->
						<xsl-out:otherwise>
							<xsl-out:apply-templates select="title" mode="chapter" />
							<xsl-out:apply-templates select="*[not(self::title)]" />
							<xsl-out:if test="not( @auto-latex-build-date ) or ( @auto-latex-build-date != 'no' )">
								<xsl-out:call-template name="build-date-internal">
									<xsl-out:with-param name="format">long</xsl-out:with-param>
									<xsl-out:with-param name="style">footer</xsl-out:with-param>
								</xsl-out:call-template>
							</xsl-out:if>
						</xsl-out:otherwise>
					</xsl-out:choose>
				</xsl-out:template>
				
			</xsl:when>
			
			<!--
				No need for an otherwise, as weird formats will have already been trapped by the definition of the text-encoding variable above.
			-->
			
		</xsl:choose>


		<xsl:apply-templates />

		</xsl-out:stylesheet>
	</xsl:template>


	<!--
		Copy across templates according to the target format. If there's no common code for a particular format, an empty template is generated.
	-->
	<xsl:template match="template">
		<xsl-out:template>
		
			<!--
				Much easier to just copy all attributes across verbatim rather than copying specific named attributes, because we might want to use attributes that weren't originally anticipated.
				
				Might this be a problem in future?
			-->
			<xsl:copy-of select="@*" />
			
			<!--
				Copy across code that is common to ALL target formats. Any code not specific to a particular target format will therefore always appear FIRST in the resulting template.
			-->
			<xsl:copy-of select="common[not(@formats)]/node()" />
			
			<!-- Copy across code that is specific to the current format. -->
			<xsl:copy-of select="common[contains(@formats, concat('/', $target-format, '/'))]/node()" />
			<xsl:copy-of select="*[name(.) = $target-format]/node()" />
			
		</xsl-out:template>
	</xsl:template>

	<!--
		Dealing with functions is slightly more complex than templates, as functions aren't allowed to be empty. We therefore have to completely ignore function definitions that have no code for the target format. The second, more specific template will match in preference to the empty one.
	-->
	<xsl:template match="function" />

	<xsl:template match="function[common[contains( @formats, concat( '/', $target-format, '/' ) )]]|function[common[not( @formats )]]">
		<xsl-out:function>
		
			<!--
				Much easier to just copy all attributes across verbatim rather than copying specific named attributes, because we might want to use attributes that weren't originally anticipated.
				
				Might this be a problem in future?
			-->
			<xsl:copy-of select="@*" />

			<!--
				Copy across code that is common to ALL target formats. Any code not specific to a particular target format will therefore always appear FIRST in the resulting template.
			-->
			<xsl:copy-of select="common[not( @formats )]/node()" />
			
			<!-- Copy across code that is specific to the current format. -->
			<xsl:copy-of select="common[contains( @formats, concat( '/', $target-format, '/' ) )]/node()" />
			<xsl:copy-of select="*[name( . )=$target-format]/node()" />
			
		</xsl-out:function>
	</xsl:template>
	
	
	<!--
		Include templates from a stylesheet sub-module. This enables us to modularise the master stylesheet.
	-->
	<xsl:template match="include">
		<xsl:apply-templates select="document( @href )/stylesheet/*" />
	</xsl:template>

	
	<!--
		This template produces a template that calls another template, i.e., it implements a template alias.
		
		The generated template probably doesn't need a name, but we'll put one in anyway.
	-->
	<xsl:template match="alias">
		<xsl-out:template>
			<xsl:attribute name="name"><xsl:value-of select="@source" /></xsl:attribute>
			<xsl:attribute name="match"><xsl:value-of select="@source" /></xsl:attribute>
			<xsl-out:call-template>
				<xsl:attribute name="name"><xsl:value-of select="@target" /></xsl:attribute>
			</xsl-out:call-template>
		</xsl-out:template>
	</xsl:template>
	

</xsl:stylesheet>

            <?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet	version="2.0"
				xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
				xmlns:xsl-out="[irrelevant]"
				xmlns:xs="http://www.w3.org/2001/XMLSchema"
				xmlns:infosci="http://info-nts-12.otago.ac.nz/infosci">

	<!--
		XSLT transformation for a master XML document defining how to transform elements in the course handbook source into HTML and LaTeX.  Hmm, meta-stylesheet?!
	-->
	
	<!--	<xsl:output method="text" encoding="utf-8" media-type="text/xml" /> -->
	<xsl:output method="xml" encoding="utf-8" cdata-section-elements="html" />

	<!--
		What target format are we generating a styesheet for?
		Possible values: html, xhtml, latex (includes pdflatex), xelatex.
	-->
	<xsl:param name="target-format"><xsl:text>html</xsl:text></xsl:param>

	<!--
		Define an alias for the xsl namespace to avoid confusion when generating xsl: elements in the output of this stylesheet.
	-->
	<xsl:namespace-alias stylesheet-prefix="xsl-out" result-prefix="xsl" />

	<!--
		Some useful variables. (Could some of these become callable templates?)
	-->
	<xsl:variable name="newline">
<xsl:text>
</xsl:text>
	</xsl:variable>

	<xsl:variable name="space"><xsl:text> </xsl:text></xsl:variable>
	

	<xsl:template match="/">
		
		<xsl-out:stylesheet version="2.0">
		
		<xsl-out:strip-space elements="*" />

		<xsl-out:param name="subject-code"><xsl:text>INFO</xsl:text></xsl-out:param>
		<xsl-out:param name="paper-number" />
		<xsl-out:param name="paper-year"		select="year-from-date( current-date() )"/>
		<xsl-out:param name="period-code" />
		
		<xsl-out:param name="showanswers"><xsl:text>no</xsl:text></xsl-out:param>
		
		<xsl-out:param name="base-path"><xsl:text>.</xsl:text></xsl-out:param>
		
		<!-- Full period string corresponding to the supplied period code. -->
		<xsl-out:variable name="period-string" select="infosci:expand-period-code( $period-code )" />
<!-- 
			<xsl-out:choose>
				<xsl-out:when test="$period-code = 'SS'">
					<xsl-out:text>Summer School</xsl-out:text>
				</xsl-out:when>
				<xsl-out:when test="$period-code = 'S1'">
					<xsl-out:text>Semester One</xsl-out:text>
				</xsl-out:when>
				<xsl-out:when test="$period-code = 'S2'">
					<xsl-out:text>Semester Two</xsl-out:text>
				</xsl-out:when>
				<xsl-out:when test="$period-code = 'FY'">
					<xsl-out:text>Full Year</xsl-out:text>
				</xsl-out:when>
				<xsl-out:otherwise>
					<xsl-out:message terminate="yes">
						<xsl-out:text>Unrecognised period code "</xsl-out:text>
						<xsl-out:value-of select="$period-code" />
						<xsl-out:text>".</xsl-out:text>
					</xsl-out:message>
				</xsl-out:otherwise>
			</xsl-out:choose>
		</xsl-out:variable>
 -->
		
		<!-- The date and time when the document was last built. -->
		<xsl-out:variable name="date-built"		select="current-dateTime()" />
		
		<!-- Get the name of the document being processed. -->
		<xsl-out:variable name="document-name"	select="reverse( tokenize( base-uri(), '/' ) )[1]" />

		<!-- Include the generated Oracle documentation code. -->
		<xsl-out:include href="oracle-docs.xsl" />

		<!-- Include the generated teaching calendar dates. -->
<!-- 
		<xsl-out:include href="calendar_dates.xsl" />
 -->

		<!--
			We're going to use the text encoding in a few different places, so let's work out what it should be now.
		-->
		<xsl:variable name="text-encoding">
			<xsl:choose>
			
				<xsl:when test="($target-format = 'latex') or ($target-format = 'html')">
					<xsl:text>iso-8859-1</xsl:text>
				</xsl:when>
				
				<xsl:when test="($target-format = 'xelatex') or ($target-format = 'xhtml')">
					<xsl:text>utf-8</xsl:text>
				</xsl:when>
				
				<xsl:otherwise>
					<xsl:message terminate="yes">
						<xsl:text>Sorry, unknown target format: </xsl:text><xsl:value-of select="$target-format" />
					</xsl:message>
				</xsl:otherwise>
			
			</xsl:choose>
		</xsl:variable>

		<!-- root-level documents should say what type/class of document they are (lecture, tutorial, generic, ...).  Do we want to call this a class or a type? -->
		<!--
		<xsl:variable name="doctype"><xsl:value-of select="/document/@type" /></xsl:variable>
		-->
		
		<!--
			First, output the document preamble according to target format. This is generally different for each target format.
		-->
		<xsl:choose>
			
			<!--
				The HTML formats are fairly simple: the only things that change are the doctypes, version number and text encoding.
			-->
			<xsl:when test="$target-format = 'html'">
			
				<xsl-out:output
					method="html"
					encoding="{$text-encoding}"
					version="4.01"
					media-type="text/html"
					doctype-public="-//W3C//DTD HTML 4.01 Transitional//EN"
					doctype-system="http://www.w3.org/TR/html4/loose.dtd"
				/>
				
			</xsl:when>
			
			<xsl:when test="$target-format = 'xhtml'">
			
				<xsl-out:output
					method="xml"
					encoding="{$text-encoding}"
					byte-order-mark="no"
					version="1.1"
					media-type="text/html"
					doctype-public="-//W3C//DTD XHTML 1.1//EN"
					doctype-system="http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"
				/>
				
			</xsl:when>
			
			<!--
				The LaTeX formats, however have a bunch of miscellaneous boilerplate that appears at the start of every document, and requires more complex interleaving because of hyperref. Since we need to stuff this into a template later on, we define this using a callable template, so that we can do useful things like apply-templates within it (which wouldn't work if we just used a variable).
			-->
			<xsl:when test="$target-format = 'latex'">
			
				<xsl-out:output method="text" encoding="{$text-encoding}" media-type="text/plain" />	

				<!--
					Set to no if you want this to be included inside another
					document. Appears here because it's used in the document
					preamble.
				-->
				<xsl-out:param name="standalone"><xsl:text>yes</xsl:text></xsl-out:param>
				
				<xsl-out:template name="latex-preamble">
					<xsl-out:text>
\usepackage{mathpazo} % mathpple is deprecated
\usepackage[T1]{fontenc}
\usepackage{textcomp}
</xsl-out:text>

					<xsl-out:apply-templates select="environment/latex-packages" />

					<xsl-out:text>
% Safer to specify the hyperref options directly rather than relying on
% the default hyperref.cfg, as XeLaTeX seems to ignore it :(.
\usepackage[	pdfpagemode=UseNone,%
				colorlinks,%
				urlcolor=blue,%
				citecolor=blue,%
				linkcolor=blue,%
				breaklinks	]{hyperref}

\renewcommand{\ttdefault}{blg}
</xsl-out:text>
				</xsl-out:template>
				
			</xsl:when>
			
			<xsl:when test="$target-format = 'xelatex'">
			
				<xsl-out:output method="text" encoding="{$text-encoding}" media-type="text/plain" />	

				<!--
					Set to no if you want this to be included inside another
					document. Appears here because it's used in the document
					preamble.
				-->
				<xsl-out:param name="standalone"><xsl:text>yes</xsl:text></xsl-out:param>
				
				<xsl-out:template name="latex-preamble">
					<xsl-out:text>
\usepackage[no-math]{fontspec}
\usepackage{mathspec}
\usepackage{xunicode}
\usepackage{xltxtra}
\usepackage{textcomp} % ???
</xsl-out:text>

					<xsl-out:apply-templates select="environment/latex-packages" />
					
					<xsl-out:text>
% Safer to specify the hyperref options directly rather than relying on
% the default hyperref.cfg, as XeLaTeX seems to ignore it :(.
\usepackage[	pdfpagemode=UseNone,%
				colorlinks,%
				urlcolor=blue,%
				citecolor=blue,%
				linkcolor=blue,%
				breaklinks	]{hyperref}

\defaultfontfeatures{Mapping=tex-text}
\setmainfont{TeX Gyre Pagella}
\setmathsfont(Digits){TeX Gyre Pagella}
\setmonofont[Scale=MatchLowercase]{Letter Gothic 12 Pitch}
</xsl-out:text>
				</xsl-out:template>
				
			</xsl:when>
			
			<!--
				No need for an otherwise, as weird target formats will have already been trapped by the definition of the text-encoding variable above.
			-->
			
		</xsl:choose>
		
		<!--
			Next, output the main document body according to target format. This is generally the same across similar target formats.
		-->
		<xsl:choose>

			<xsl:when test="($target-format = 'html') or ($target-format = 'xhtml')">
			
				<!-- *** (X)HTML Output *** -->
				
				<!-- Old version: before using xsl:namespace-alias: -->
				<!--
				<xsl-out:element name="xsl:output">
					<xsl-out:attribute name="method">html</xsl-out:attribute>
					<xsl-out:attribute name="encoding">UTF-8</xsl-out:attribute>
					<xsl-out:attribute name="media-type">text/html</xsl-out:attribute>
					<xsl-out:attribute name="doctype-public">-//W3C//DTD HTML 4.01 Transitional//EN</xsl-out:attribute>
				</xsl-out:element>
				-->
				
				<!-- Default to PNG images for web dispay. -->
				<xsl-out:param name="image-format"><xsl:text>png</xsl:text></xsl-out:param>

			<!-- Nope, includes can only appear as a child of xsl:stylesheet. -->
			<!-- <xsl-out:include href="xml2html-root.xsl" /> -->
				
				<xsl-out:template match="/document">
					<xsl-out:comment> THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT! </xsl-out:comment>
					<html>
						<head>
							<xsl-out:element name="link">
								<xsl-out:attribute name="rel">
									<xsl-out:text>Stylesheet</xsl-out:text>
								</xsl-out:attribute>
								<xsl-out:attribute name="href">
									<xsl-out:text>https://blackboard.otago.ac.nz/bbcswebdav/courses/</xsl-out:text>
									<xsl-out:value-of select="$subject-code" />
									<xsl-out:value-of select="$paper-number" />
									<xsl-out:text>_</xsl-out:text>
									<xsl-out:value-of select="$period-code" />
									<xsl-out:text>DNI_</xsl-out:text>
									<xsl-out:value-of select="$paper-year" />
									<xsl-out:text>/db_styles.css</xsl-out:text>
								</xsl-out:attribute>
								<xsl-out:attribute name="type">
									<xsl-out:text>text/css</xsl-out:text>
								</xsl-out:attribute>
							</xsl-out:element>
							<xsl-out:element name="meta">
								<xsl-out:attribute name="http-equiv">
									<xsl-out:text>Content-type</xsl-out:text>
								</xsl-out:attribute>
								<xsl-out:attribute name="content">
									<xsl-out:text>
										<xsl:text>text/html;charset=</xsl:text>
										<xsl:value-of select="$text-encoding" />
									</xsl-out:text>
								</xsl-out:attribute>
							</xsl-out:element>
							<title>
								<xsl-out:choose>
									<xsl-out:when test="@class = 'calendar'">
										<xsl-out:value-of select="$subject-code" />
										<xsl-out:value-of select="$paper-number" />
										<xsl-out:text> Teaching Calendar, </xsl-out:text>
										<xsl-out:value-of select="$period-string" />
										<xsl-out:text>, </xsl-out:text>
										<xsl-out:value-of select="$paper-year" />
									</xsl-out:when>
									<xsl-out:otherwise>
										<xsl-out:apply-templates select="title" mode="preamble" />
									</xsl-out:otherwise>
								</xsl-out:choose>
							</title>
						</head>
						<body>
							<xsl-out:choose>
								<xsl-out:when test="@class = 'calendar'" />
								<xsl-out:otherwise>
									<xsl-out:apply-templates select="title" mode="title" />
									<xsl-out:apply-templates select="date" mode="title" />
									<xsl-out:apply-templates select="due-date" mode="title" />
								</xsl-out:otherwise>
							</xsl-out:choose>
							<xsl-out:apply-templates />

							<!-- How best to approach this - certain elements that need special handling (e.g. title, author) shouldn't be passed through here as well. -->
							<!-- How about we just match certain elements that we know can be handled safely, e.g. sections, paragraphs, ...?  (...and their aliases?) -->
							<!-- Are introductions just another section, or should there be an introduction element? -->
							
							<!-- The solution is to get cleverer with our templates, e.g., multiple templates for <title> that have different match patterns (document/title, section/title). -->
							<!-- We also need to define an empty template for the <document-metadata> element so that its contents get ignored. -->
							<!-- Once these are done, we can just go apply-templates and forget about it. -->
							
							<hr />
							<!--
								Since HTML doesn't support footnotes as such, we
								instead include them as endnotes at the end of
								the document.
							-->
							<xsl-out:if test="count(//footnote) &gt; 0">
								<h3>Notes</h3>
								<xsl-out:apply-templates select="//footnote" mode="list" />
								<hr />
							</xsl-out:if>
							<xsl-out:call-template name="build-date-internal">
								<xsl-out:with-param name="format">long</xsl-out:with-param>
								<xsl-out:with-param name="style">footer</xsl-out:with-param>
							</xsl-out:call-template>
						</body>
					</html>
				</xsl-out:template>
			</xsl:when>

			<xsl:when test="($target-format = 'latex') or ($target-format = 'xelatex')">
			
				<!-- Set to pdf if using PDFLaTeX, otherwise eps. -->
				<xsl-out:param name="image-format"><xsl:text>pdf</xsl:text></xsl-out:param>
				
				<!--
				    Generate macro to encode the document class name.
				    This is currently BROKEN. If the document class specified loads packages that are then loaded by the boilerplate below with different optons, it will cause LaTeX "option clash" errors. Therefore, DO NOT use the @latex-document-class attribute for now until a solution can be devised!
				-->
				<xsl-out:template name="setup-document-class">
					<xsl-out:text>
\def\DocumentClass{</xsl-out:text>
                    <xsl-out:value-of select="@latex-document-class" />
                    <xsl-out:if test="not( @latex-document-class )">
                        <xsl-out:text>article</xsl-out:text>
                    </xsl-out:if>
				    <xsl-out:text>}
</xsl-out:text>
				</xsl-out:template>

				<!-- *** LaTeX Source Output *** -->
				<!-- Should this produce a LaTeX source fragment or an entire valid source document? -->
				<xsl-out:template match="/document">
					<xsl-out:choose>

						<xsl-out:when test="$standalone = 'yes'">
							<xsl-out:text>
% THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT!

</xsl-out:text>
							<xsl-out:call-template name="setup-document-class" />
							<xsl-out:text>
\PassOptionsToClass{\LaTeXOptions}{\DocumentClass}
\documentclass{\DocumentClass}

\usepackage[margin=1in]{geometry}
\usepackage{multirow}
\usepackage{graphicx}
\usepackage{verbatim}       % needed for \verbatiminput
\usepackage{relalg}         % needed for join operators
\usepackage{pifont}
\usepackage{siunitx}        % number and SI unit formatting
\usepackage{listings}       % nicely formatted code listings
\usepackage[normalem]{ulem} % fancy underlining, strikeout, etc.
\usepackage{boxedminipage}
\usepackage{parskip}        % Space-separated rather than indented paragraphs.
\usepackage{rotating}		% Rotate stuff.

</xsl-out:text>

							<xsl-out:call-template name="latex-preamble" />

							<xsl-out:apply-templates select="environment/latex-commands" />

							<xsl-out:text>
\newenvironment{answer}{\par\vspace{0.5em}\itshape}{\normalfont\vspace{1.5em}}

% Listings setup. We preload the most obviously like languages to speed things
% up. Other languages will still work, just not quite as quickly.
\lstloadlanguages{Oracle}
\lstset{basicstyle=\ttfamily,basewidth=0.5em,escapeinside={(@}{@)},
	showspaces=false,showstringspaces=false}

% Environment for worksheet exercises.
\newcounter{exercise}
\setcounter{exercise}{0}
\newenvironment{exercise}%
	{\noindent\refstepcounter{exercise}\begin{boxedminipage}{\columnwidth}\textbf{Exercise \theexercise: }}%
	{\end{boxedminipage}}

</xsl-out:text>

							<xsl-out:apply-templates select="title" mode="preamble" />
							<xsl-out:call-template name="newline-internal" />
							<xsl-out:apply-templates select="author" mode="preamble" />
							<xsl-out:call-template name="newline-internal" />
							<xsl-out:apply-templates select="date|due-date" mode="preamble" />
							<xsl-out:call-template name="newline-internal" />

							<xsl-out:text>
\begin{document}
</xsl-out:text>
                            <xsl-out:if test="not( @suppress-latex-title ) or ( @suppress-latex-title != 'yes' )">
                                <xsl-out:text>
	\maketitle
</xsl-out:text>
                            </xsl-out:if>
							<xsl-out:text>

</xsl-out:text>

							<xsl-out:apply-templates />

							<!--
								If you're having problems with the build date appearing in weird or annoying locations (usually because of floating items like tables and figures), set document/@auto-latex-build-date to "no". You can then use the build-date element to insert the build date wherever you like, if necessary. This really only applies to LaTeX documents. The behaviour of HTML documents is much more predictable because they don't have elements with "minds of their own", so the build date is guaranteed to always appear at the very end.
							-->
							<xsl-out:if test="not( @auto-latex-build-date ) or ( @auto-latex-build-date != 'no' )">
							
								<xsl-out:call-template name="build-date-internal">
									<xsl-out:with-param name="format">long</xsl-out:with-param>
									<xsl-out:with-param name="style">footer</xsl-out:with-param>
								</xsl-out:call-template>
							</xsl-out:if>
							<xsl-out:text>\end{document}</xsl-out:text>
						</xsl-out:when>
						<!-- Not standalone: -->
						<xsl-out:otherwise>
							<xsl-out:apply-templates select="title" mode="chapter" />
							<xsl-out:apply-templates select="*[not(self::title)]" />
							<xsl-out:if test="not( @auto-latex-build-date ) or ( @auto-latex-build-date != 'no' )">
								<xsl-out:call-template name="build-date-internal">
									<xsl-out:with-param name="format">long</xsl-out:with-param>
									<xsl-out:with-param name="style">footer</xsl-out:with-param>
								</xsl-out:call-template>
							</xsl-out:if>
						</xsl-out:otherwise>
					</xsl-out:choose>
				</xsl-out:template>
				
			</xsl:when>
			
			<!--
				No need for an otherwise, as weird formats will have already been trapped by the definition of the text-encoding variable above.
			-->
			
		</xsl:choose>


		<xsl:apply-templates />

		</xsl-out:stylesheet>
	</xsl:template>


	<!--
		Copy across templates according to the target format. If there's no common code for a particular format, an empty template is generated.
	-->
	<xsl:template match="template">
		<xsl-out:template>
		
			<!--
				Much easier to just copy all attributes across verbatim rather than copying specific named attributes, because we might want to use attributes that weren't originally anticipated.
				
				Might this be a problem in future?
			-->
			<xsl:copy-of select="@*" />
			
			<!--
				Copy across code that is common to ALL target formats. Any code not specific to a particular target format will therefore always appear FIRST in the resulting template.
			-->
			<xsl:copy-of select="common[not(@formats)]/node()" />
			
			<!-- Copy across code that is specific to the current format. -->
			<xsl:copy-of select="common[contains(@formats, concat('/', $target-format, '/'))]/node()" />
			<xsl:copy-of select="*[name(.) = $target-format]/node()" />
			
		</xsl-out:template>
	</xsl:template>

	<!--
		Dealing with functions is slightly more complex than templates, as functions aren't allowed to be empty. We therefore have to completely ignore function definitions that have no code for the target format. The second, more specific template will match in preference to the empty one.
	-->
	<xsl:template match="function" />

	<xsl:template match="function[common[contains( @formats, concat( '/', $target-format, '/' ) )]]|function[common[not( @formats )]]">
		<xsl-out:function>
		
			<!--
				Much easier to just copy all attributes across verbatim rather than copying specific named attributes, because we might want to use attributes that weren't originally anticipated.
				
				Might this be a problem in future?
			-->
			<xsl:copy-of select="@*" />

			<!--
				Copy across code that is common to ALL target formats. Any code not specific to a particular target format will therefore always appear FIRST in the resulting template.
			-->
			<xsl:copy-of select="common[not( @formats )]/node()" />
			
			<!-- Copy across code that is specific to the current format. -->
			<xsl:copy-of select="common[contains( @formats, concat( '/', $target-format, '/' ) )]/node()" />
			<xsl:copy-of select="*[name( . )=$target-format]/node()" />
			
		</xsl-out:function>
	</xsl:template>
	
	
	<!--
		Include templates from a stylesheet sub-module. This enables us to modularise the master stylesheet.
	-->
	<xsl:template match="include">
		<xsl:apply-templates select="document( @href )/stylesheet/*" />
	</xsl:template>

	
	<!--
		This template produces a template that calls another template, i.e.
		it implements a template alias.
		
		The generated template probably doesn't need a name, but we'll put one
		in anyway.
	-->

	<xsl:template match="alias">
		<xsl-out:template>
			<xsl:attribute name="name"><xsl:value-of select="@source" /></xsl:attribute>
			<xsl:attribute name="match"><xsl:value-of select="@source" /></xsl:attribute>
			<xsl-out:call-template>
				<xsl:attribute name="name"><xsl:value-of select="@target" /></xsl:attribute>
			</xsl-out:call-template>
		</xsl-out:template>
	</xsl:template>
	

	<!--
		This template produces a template for processing style-oriented markup,
		such as empahsis, foreign terms, and quotations.
	-->
	<!--
	<xsl:template match="d">
	</xsl-out:template match>
	-->

	<!--
		This template produces a template for processing an element that
		refers to a hyperlink.
	-->
	<xsl:template match="hyperlink">
	</xsl:template>
	
</xsl:stylesheet>
 	<!--
 		XSLT transformation for a master XML document defining how to transform elements in the course handbook source into HTML and LaTeX.  Hmm, meta-stylesheet?!
 	-->
-	<!--	<xsl:output method="text" encoding="utf-8" media-type="text/xml" /> -->
 	<xsl:output method="xml" encoding="utf-8" cdata-section-elements="html" />
 	<!--
 		What target format are we generating a styesheet for?
 	<!--
 		Define an alias for the xsl namespace to avoid confusion when generating xsl: elements in the output of this stylesheet.
 	-->
 	<xsl:namespace-alias stylesheet-prefix="xsl-out" result-prefix="xsl" />
+	<!--
+		Some useful variables. (Could some of these become callable templates?)
+	-->
+	<!-- Some useful variables. (Could some of these become callable templates?) -->
 	<xsl:variable name="newline">
 <xsl:text>
 </xsl:text>
 	</xsl:variable>
 	<xsl:variable name="space"><xsl:text> </xsl:text></xsl:variable>
+    <!-- *** TEMPLATES *** -->
 	<xsl:template match="/">
 		<xsl-out:stylesheet version="2.0">
 		<xsl-out:param name="base-path"><xsl:text>.</xsl:text></xsl-out:param>
 		<!-- Full period string corresponding to the supplied period code. -->
 		<xsl-out:variable name="period-string" select="infosci:expand-period-code( $period-code )" />
-<!--
-			<xsl-out:choose>
-				<xsl-out:when test="$period-code = 'SS'">
-					<xsl-out:text>Summer School</xsl-out:text>
-				</xsl-out:when>
-				<xsl-out:when test="$period-code = 'S1'">
-					<xsl-out:text>Semester One</xsl-out:text>
-				</xsl-out:when>
-				<xsl-out:when test="$period-code = 'S2'">
-					<xsl-out:text>Semester Two</xsl-out:text>
-				</xsl-out:when>
-				<xsl-out:when test="$period-code = 'FY'">
-					<xsl-out:text>Full Year</xsl-out:text>
-				</xsl-out:when>
-				<xsl-out:otherwise>
-					<xsl-out:message terminate="yes">
-						<xsl-out:text>Unrecognised period code "</xsl-out:text>
-						<xsl-out:value-of select="$period-code" />
-						<xsl-out:text>".</xsl-out:text>
-					</xsl-out:message>
-				</xsl-out:otherwise>
-			</xsl-out:choose>
-		</xsl-out:variable>
- -->
 		<!-- The date and time when the document was last built. -->
 		<xsl-out:variable name="date-built"		select="current-dateTime()" />
 		<xsl-out:variable name="document-name"	select="reverse( tokenize( base-uri(), '/' ) )[1]" />
 		<!-- Include the generated Oracle documentation code. -->
 		<xsl-out:include href="oracle-docs.xsl" />
-		<!-- Include the generated teaching calendar dates. -->
-<!--
-		<xsl-out:include href="calendar_dates.xsl" />
- -->
 		<!--
 			We're going to use the text encoding in a few different places, so let's work out what it should be now.
 		-->
 			</xsl:choose>
 		</xsl:variable>
-		<!-- root-level documents should say what type/class of document they are (lecture, tutorial, generic, ...).  Do we want to call this a class or a type? -->
-		<!--
-		<xsl:variable name="doctype"><xsl:value-of select="/document/@type" /></xsl:variable>
-		-->
 		<!--
 			First, output the document preamble according to target format. This is generally different for each target format.
 		-->
 		<xsl:choose>
 			<xsl:when test="($target-format = 'html') or ($target-format = 'xhtml')">
 				<!-- *** (X)HTML Output *** -->
-				<!-- Old version: before using xsl:namespace-alias: -->
-				<!--
-				<xsl-out:element name="xsl:output">
-					<xsl-out:attribute name="method">html</xsl-out:attribute>
-					<xsl-out:attribute name="encoding">UTF-8</xsl-out:attribute>
-					<xsl-out:attribute name="media-type">text/html</xsl-out:attribute>
-					<xsl-out:attribute name="doctype-public">-//W3C//DTD HTML 4.01 Transitional//EN</xsl-out:attribute>
-				</xsl-out:element>
-				-->
 				<!-- Default to PNG images for web dispay. -->
 				<xsl-out:param name="image-format"><xsl:text>png</xsl:text></xsl-out:param>
-			<!-- Nope, includes can only appear as a child of xsl:stylesheet. -->
-			<!-- <xsl-out:include href="xml2html-root.xsl" /> -->
 				<xsl-out:template match="/document">
 					<xsl-out:comment> THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT! </xsl-out:comment>
 					<html>
 						<head>
 				<xsl-out:param name="image-format"><xsl:text>pdf</xsl:text></xsl-out:param>
 				<!--
 				    Generate macro to encode the document class name.
+				    This is currently BROKEN. If the document class specified loads packages that are then loaded by the boilerplate below with different optons, it will cause LaTeX "option clash" errors. Therefore, DO NOT use the @latex-document-class attribute for now until a solution can be devised!
+				    This is currently BROKEN. If the specified document class loads packages that are then loaded by the boilerplate below with different optons, it will cause LaTeX "option clash" errors. Therefore, DO NOT use the @latex-document-class attribute for now until a solution can be devised!
 				-->
 				<xsl-out:template name="setup-document-class">
 					<xsl-out:text>
 \def\DocumentClass{</xsl-out:text>
 				    <xsl-out:text>}
 </xsl-out:text>
 				</xsl-out:template>
+				<!-- *** LaTeX Source Output *** -->
+				<!-- Should this produce a LaTeX source fragment or an entire valid source document? -->
+				<!-- *** (Xe)LaTeX Source Output *** -->
 				<xsl-out:template match="/document">
 					<xsl-out:choose>
+						<!-- standalone = "yes" means generate an entire valid (Xe)LaTeX source document. -->
 						<xsl-out:when test="$standalone = 'yes'">
 							<xsl-out:text>
 % THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT!
 								</xsl-out:call-template>
 							</xsl-out:if>
 							<xsl-out:text>\end{document}</xsl-out:text>
 						</xsl-out:when>
+						<!-- Not standalone: -->
+						<!-- standalone = "no" means generate a (Xe)LaTeX source fragment. -->
 						<xsl-out:otherwise>
 							<xsl-out:apply-templates select="title" mode="chapter" />
 							<xsl-out:apply-templates select="*[not(self::title)]" />
 							<xsl-out:if test="not( @auto-latex-build-date ) or ( @auto-latex-build-date != 'no' )">
 	</xsl:template>
 	<!--
+		This template produces a template that calls another template, i.e.
+		it implements a template alias.
+		The generated template probably doesn't need a name, but we'll put one
+		in anyway.
+	-->
+		This template produces a template that calls another template, i.e., it implements a template alias.
+		The generated template probably doesn't need a name, but we'll put one in anyway.
+	-->
 	<xsl:template match="alias">
 		<xsl-out:template>
 			<xsl:attribute name="name"><xsl:value-of select="@source" /></xsl:attribute>
 			<xsl:attribute name="match"><xsl:value-of select="@source" /></xsl:attribute>
 		</xsl-out:template>
 	</xsl:template>
-	<!--
-		This template produces a template for processing style-oriented markup,
-		such as empahsis, foreign terms, and quotations.
-	-->
-	<!--
-	<xsl:template match="d">
-	</xsl-out:template match>
-	-->
-	<!--
-		This template produces a template for processing an element that
-		refers to a hyperlink.
-	-->
-	<xsl:template match="hyperlink">
-	</xsl:template>
 </xsl:stylesheet>

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