<?xml version='1.0'?>
<!-- vim: sw=2 sta et
-->
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:doc="http://nwalsh.com/xsl/documentation/1.0"
xmlns:l="http://docbook2x.sourceforge.net/xsl/localization"
xmlns="http://docbook2x.sourceforge.net/xmlns/Texi-XML"
exclude-result-prefixes="doc l"
version='1.0'
xml:lang="en">
<!-- ********************************************************************
$Id: xref.xsl,v 1.23 2004/08/22 22:46:07 stevecheng Exp $
********************************************************************
(C) 2000-2004 Steve Cheng <stevecheng@users.sourceforge.net>
This file is part of the docbook2X XSLT stylesheets for
converting DocBook to Texinfo.
See ../../COPYING for the copyright status of this software.
******************************************************************** -->
<doc:reference xmlns="">
<title>Handle cross references and links</title>
</doc:reference>
<!-- ==================================================================== -->
<xsl:template name="anchor">
<xsl:if test="@id">
<anchor id="{@id}" />
</xsl:if>
</xsl:template>
<xsl:template match="anchor">
<xsl:call-template name="anchor" />
</xsl:template>
<!-- ==================================================================== -->
<xsl:template name="check-xref">
<xsl:param name="target" />
<xsl:param name="content" />
<xsl:param name="bad-content" />
<xsl:choose>
<xsl:when test="not($target)">
<!-- No such ID -->
<xsl:call-template name="user-message">
<xsl:with-param name="arg-1" select="@linkend" />
<xsl:with-param name="key">reference to non-existent ID</xsl:with-param>
<xsl:with-param name="content">reference to non-existent ID "<l:a1 />"</xsl:with-param>
</xsl:call-template>
<xsl:copy-of select="$bad-content" />
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$content" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="xref">
<xsl:variable name="target" select="key('id', @linkend)"/>
<xsl:call-template name="check-xref">
<xsl:with-param name="target" select="$target" />
<xsl:with-param name="bad-content">
<xsl:call-template name="gentext-rendering">
<xsl:with-param name="key" select="'dangling-xref'" />
<xsl:with-param name="content" select="string(@linkend)" />
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name="content">
<ref>
<xsl:attribute name="idref">
<xsl:call-template name="print-id">
<xsl:with-param name="node" select="$target" />
</xsl:call-template>
</xsl:attribute>
<!-- FIXME Printed manual name -->
<xsl:apply-templates select="$target" mode="xref-to" />
</ref>
</xsl:with-param>
</xsl:call-template>
</xsl:template>
<!-- ==================================================================== -->
<xsl:template match="link">
<xsl:variable name="target" select="key('id', @linkend)"/>
<xsl:call-template name="check-xref">
<xsl:with-param name="target" select="$target" />
<xsl:with-param name="bad-content">
<xsl:call-template name="gentext-rendering">
<xsl:with-param name="key" select="'dangling-xref'" />
<xsl:with-param name="content" select="string(@linkend)" />
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name="content">
<xsl:choose>
<xsl:when test="$links-use-pxref">
<xsl:apply-templates />
<xsl:text> (</xsl:text>
<pxref>
<xsl:attribute name="idref">
<xsl:call-template name="print-id">
<xsl:with-param name="node" select="$target" />
</xsl:call-template>
</xsl:attribute>
</pxref>
<xsl:text>)</xsl:text>
</xsl:when>
<xsl:otherwise>
<ref>
<xsl:attribute name="idref">
<xsl:call-template name="print-id">
<xsl:with-param name="node" select="$target" />
</xsl:call-template>
</xsl:attribute>
<!-- FIXME Printed manual name -->
<xsl:apply-templates />
</ref>
</xsl:otherwise>
</xsl:choose>
</xsl:with-param>
</xsl:call-template>
</xsl:template>
<xsl:template match="ulink">
<uref>
<xsl:attribute name="url"><xsl:value-of select="@url"/></xsl:attribute>
<xsl:apply-templates/>
</uref>
</xsl:template>
<xsl:template match="olink">
<xsl:apply-templates/>
</xsl:template>
<!-- ==================================================================== -->
<doc:mode mode="xref-to" xmlns="">
<refpurpose>Give cross-reference markup</refpurpose>
<refdescription>
<para>
Processing an element with this mode returns the markup/text that should
be used for referring to it in cross-references.</para>
<para>
Since Texinfo already handles cross references to nodes, this mode
does mostly nothing. FIXME: However we need something for anchors...
</para>
</refdescription>
</doc:mode>
<xsl:template match="*" mode="xref-to">
<xsl:choose>
<xsl:when test="@xreflabel">
<xsl:value-of select="@xreflabel" />
</xsl:when>
<xsl:otherwise>
<!-- Otherwise same as the title.
If the title doesn't exist, $title is empty,
then we let Texinfo take care of it.
-->
<xsl:apply-templates select="." mode="for-title">
<xsl:with-param name="suppress-error" select="true()" />
</xsl:apply-templates>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template match="co" mode="xref-to">
<xsl:apply-templates select="." mode="co" />
</xsl:template>
</xsl:stylesheet>