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229 | <?xml version='1.0'?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:exsl="http://exslt.org/common"
exclude-result-prefixes="exsl"
version='1.0'>
<!--############################################################################
XSLT Stylesheet DocBook -> LaTeX
############################################################################ -->
<xsl:param name="listings.xml"/>
<xsl:template name="line.pad">
<xsl:param name="count"/>
<xsl:if test="$count > 0">
<xsl:text> </xsl:text>
<xsl:call-template name="line.pad">
<xsl:with-param name="count" select="$count - 1"/>
</xsl:call-template>
</xsl:if>
</xsl:template>
<!-- Recursively insert <co> elements in the listing text -->
<xsl:template name="insert.co">
<xsl:param name="text"/>
<xsl:param name="areas"/>
<xsl:param name="areaid" select="'1'"/>
<xsl:param name="line" select="'1'"/>
<xsl:param name="col" select="'1'"/>
<xsl:variable name="area" select="$areas[position()=$areaid]"/>
<xsl:variable name="arealine">
<xsl:choose>
<xsl:when test="contains($area/@coords, ' ')">
<xsl:value-of select="substring-before($area/@coords, ' ')"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$area/@coords"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="areacol" select="substring-after($area/@coords, ' ')"/>
<xsl:choose>
<xsl:when test="string-length($text)=0">
<!-- no more text in this listing -->
</xsl:when>
<xsl:when test="not($area)">
<!-- no more <co> to insert, copy the rest of the text -->
<xsl:value-of select="$text"/>
</xsl:when>
<xsl:when test="$arealine > $line">
<!-- print the lines until we reach the <area> coord line -->
<!-- print the end of the current line -->
<xsl:value-of select="substring-before($text, ' ')"/>
<xsl:text> </xsl:text>
<xsl:call-template name="insert.co">
<xsl:with-param name="text" select="substring-after($text, ' ')"/>
<xsl:with-param name="line" select="$line+1"/>
<xsl:with-param name="areaid" select="$areaid"/>
<xsl:with-param name="areas" select="$areas"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<!-- line length -->
<xsl:variable name="strlen">
<xsl:choose>
<xsl:when test="contains($text, ' ')">
<xsl:value-of select="string-length(substring-before($text, ' '))"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="string-length($text)"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<!-- relative column position -->
<xsl:variable name="colpos">
<xsl:value-of select="$areacol - $col"/>
</xsl:variable>
<!-- padding count -->
<xsl:variable name="padlen">
<xsl:choose>
<xsl:when test="$areacol!='' and ($colpos > $strlen)">
<xsl:value-of select="$colpos - $strlen"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="'0'"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<!-- number of characters before <co> to print -->
<xsl:variable name="count">
<xsl:choose>
<xsl:when test="$areacol='' or ($padlen > 0)">
<xsl:value-of select="$strlen"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$colpos"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<!-- line part to insert before <co> -->
<xsl:if test="$count > 0">
<xsl:value-of select="substring($text,1,$count)"/>
</xsl:if>
<!-- insert padding spaces -->
<xsl:if test="$padlen > 0">
<xsl:call-template name="line.pad">
<xsl:with-param name="count" select="$padlen"/>
</xsl:call-template>
</xsl:if>
<!-- <co> to insert for this line -->
<co>
<xsl:for-each select="$area/@id|$area/@xml:id|$area/@linkends">
<xsl:copy/></xsl:for-each>
</co>
<!-- continue, for the next <area> if any -->
<xsl:call-template name="insert.co">
<xsl:with-param name="text" select="substring($text,$count+1)"/>
<xsl:with-param name="line" select="$line"/>
<xsl:with-param name="areaid" select="$areaid+1"/>
<xsl:with-param name="areas" select="$areas"/>
<xsl:with-param name="col" select="$col+$count"/>
</xsl:call-template>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="programlisting|screen" mode="build.listing.co">
<xsl:param name="listing"/>
<xsl:param name="areas"/>
<xsl:variable name="content">
<xsl:apply-templates mode="latex.programlisting"/>
</xsl:variable>
<xsl:element name="{local-name($listing)}">
<!-- Inherit the original attributes -->
<xsl:for-each select="$listing/@*">
<xsl:copy/>
</xsl:for-each>
<xsl:call-template name="insert.co">
<xsl:with-param name="text" select="$content"/>
<xsl:with-param name="areas" select="$areas"/>
</xsl:call-template>
</xsl:element>
</xsl:template>
<xsl:template match="programlistingco|screenco">
<!-- Build a new listing with the embedded <co> -->
<xsl:variable name="newlisting">
<xsl:apply-templates select="programlisting|screen" mode="build.listing.co">
<xsl:with-param name="listing" select="programlisting|screen"/>
<xsl:with-param name="areas" select="areaspec//area"/>
</xsl:apply-templates>
</xsl:variable>
<xsl:apply-templates select="exsl:node-set($newlisting)/*">
<xsl:with-param name="rnode" select="calloutlist"/>
</xsl:apply-templates>
<xsl:apply-templates select="calloutlist">
<xsl:with-param name="rnode" select="exsl:node-set($newlisting)"/>
</xsl:apply-templates>
</xsl:template>
<xsl:template match="areaspec|areaset|area"/>
<!-- Process the external files referenced in a programlistingco or screenco
environment. Since in XSLT 1.0 you cannot directly include text files, the
workaround is to load the data from a listings database file. -->
<xsl:template match="textdata|
imagedata[@format='linespecific']|
inlinegraphic[@format='linespecific']"
mode="latex.programlisting">
<xsl:variable name="name" select="name(.)"/>
<xsl:variable name="lst.doc" select="document($listings.xml)"/>
<xsl:variable name="lst.id">
<xsl:apply-templates select="." mode="lstid"/>
</xsl:variable>
<xsl:variable name="lst.ext"
select="$lst.doc/listings/listing[@type=$name][@lstid=$lst.id]"/>
<xsl:if test="$output.quietly = 0">
<xsl:message><xsl:text>Load external file </xsl:text>
<xsl:value-of select="$name"/>
<xsl:text>[</xsl:text>
<xsl:value-of select="$lst.id"/>
<xsl:text>]</xsl:text>
<xsl:if test="not($lst.ext)">
<xsl:text>(failed)</xsl:text>
</xsl:if>
</xsl:message>
</xsl:if>
<xsl:apply-templates mode="latex.programlisting" select="$lst.ext"/>
</xsl:template>
<!-- The intermediate elements in external file handling just apply
the templates in the same mode. -->
<xsl:template match="textobject|listing"
mode="latex.programlisting">
<xsl:apply-templates mode="latex.programlisting"/>
</xsl:template>
<xsl:template match="textdata|
imagedata[@format='linespecific']|
inlinegraphic[@format='linespecific']" mode="lstid">
<xsl:number from="/"
level="any"
format="1"/>
</xsl:template>
</xsl:stylesheet>
|