<?xml version="1.0" encoding="utf-8"?>

<!--
	Basic text formatting, like emphasis, bold, etc.
-->

<stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform">


	<!-- "Logical" styles. -->

	<!-- Emphasis (normally italic). -->
	<template name="emph" match="emph|em">
		<common formats="/latex/xelatex/">
			<xsl:text>\emph{</xsl:text>
			<xsl:apply-templates />
			<xsl:text>}</xsl:text>
		</common>
		<common formats="/html/xhtml/">
			<em><xsl:apply-templates /></em>
		</common>
	</template>

	<!--
		Emphasis inside answers needs to be handled specially in HTML, as it doesn't just flip-flop automatically like it does in LaTeX.
	-->
	<template name="emph-in-answer" match="answer//emph|answer//em">
		<common formats="/latex/xelatex/">
			<xsl:text>\emph{</xsl:text>
			<xsl:apply-templates />
			<xsl:text>}</xsl:text>
		</common>
		<common formats="/html/xhtml/">
			<strong><xsl:apply-templates /></strong>
		</common>
	</template>

	<!-- Strong emphasis (normally bold). -->
	<template name="strong" match="strong">
		<common formats="/latex/xelatex/">
			<xsl:text>\textbf{</xsl:text>
			<xsl:apply-templates />
			<xsl:text>}</xsl:text>
		</common>
		<common formats="/html/xhtml/">
			<strong><xsl:apply-templates /></strong>
		</common>
	</template>
	
	<!-- A defined term. -->
	<template name="term" match="term">
		<common formats="/latex/xelatex/">
			<xsl:text>\term{</xsl:text>
			<xsl:apply-templates />
			<xsl:text>}</xsl:text>
		</common>
		<common formats="/html/xhtml/">
			<i class="term"><xsl:apply-templates /></i>
		</common>
	</template>
	
	<!-- A foreign word or phrase. -->
	<template name="foreign" match="foreign">
		<common formats="/latex/xelatex/">
			<xsl:text>\foreign{</xsl:text>
			<xsl:apply-templates />
			<xsl:text>}</xsl:text>
		</common>
		<common formats="/html/xhtml/">
			<i class="foreign"><xsl:apply-templates /></i>
		</common>
	</template>
	

	<!-- "Physical" styles. -->
	
	<!-- Italics. -->
	<template name="italic" match="italic">
		<common formats="/latex/xelatex/">
			<xsl:text>\textit{</xsl:text>
			<xsl:apply-templates />
			<xsl:text>}</xsl:text>
		</common>
		<common formats="/html/xhtml/">
			<i><xsl:apply-templates /></i>
		</common>
	</template>
	
	<!-- Bold face. -->
	<template name="bold" match="bold">
		<common formats="/latex/xelatex/">
			<xsl:text>\textbf{</xsl:text>
			<xsl:apply-templates />
			<xsl:text>}</xsl:text>
		</common>
		<common formats="/html/xhtml/">
			<b><xsl:apply-templates /></b>
		</common>
	</template>
	
	<!-- Underlining. -->
	<template name="underline" match="underline|u">
		<common formats="/latex/xelatex/">
			<xsl:text>\uline{</xsl:text>
			<xsl:apply-templates />
			<xsl:text>}</xsl:text>
		</common>
		<common formats="/html/xhtml/">
			<span style="text-decoration: underline;"><xsl:apply-templates /></span>
		</common>
	</template>
	
	<!-- Strike-through. -->
	<template name="strike-through" match="strike-through|line-through|strikethrough|linethrough">
		<common formats="/latex/xelatex/">
			<xsl:text>\sout{</xsl:text>
			<xsl:apply-templates />
			<xsl:text>}</xsl:text>
		</common>
		<common formats="/html/xhtml/">
			<span style="text-decoration: line-through;"><xsl:apply-templates /></span>
		</common>
	</template>
	
	
	<!-- Center stuff on the page. -->
	<template name="center" match="center|centering|centre|centring">
		<common formats="/latex/xelatex/">
			<xsl:text>\begin{center}</xsl:text>
			<xsl:call-template name="newline-internal" />
			<xsl:apply-templates />
			<xsl:text>\end{center}</xsl:text>
			<xsl:call-template name="newline-internal" />
		</common>
		<common formats="/html/xhtml/">
			<div style="text-align: center;">
				<xsl:apply-templates />
			</div>
		</common>
	</template>
	
	
	<!--
	    Simple inline text colors using CSS colour names. (This requires the css-colors package in LaTeX.)
	    
	    TODO: RGB colours?
	    
		@name: The CSS name of the colour. [REQUIRED]
	-->
	<template name="colour" match="color|colour">
		<common formats="/latex/xelatex/">
			<xsl:text>\textcolor{</xsl:text>
			<xsl:value-of select="@name" />
			<xsl:text>}{</xsl:text>
			<xsl:apply-templates />
			<xsl:text>}</xsl:text>
		</common>
		<common formats="/html/xhtml/">
			<span style="color: {@name};">
				<xsl:apply-templates />
			</span>
		</common>
	</template>


	<!--
		Convert the input string into Title Case.
		
		$input-string: The string to be converted.
		
		Returns: The converted string.
	-->
	<function name="infosci:title-case" as="xs:string">
		<common>
			<xsl:param name="input-string" />
			<xsl:variable name="output-string">
                <xsl:choose>
                    <xsl:when test="contains($input-string, ' ')">
                        <xsl:value-of select="infosci:title-case(substring-before($input-string, ' '))" />
                        <xsl:text> </xsl:text>
                        <xsl:value-of select="infosci:title-case(substring-after($input-string, ' '))" />
                    </xsl:when>
                    <xsl:otherwise>
                        <xsl:value-of select="concat(upper-case(substring($input-string, 1, 1)), substring($input-string, 2))" />
                    </xsl:otherwise>
                </xsl:choose>			
            </xsl:variable>
			
			<xsl:sequence select="$output-string" />
		</common>
	</function>
	
	
</stylesheet>