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<?xml version="1.0"?>
<!DOCTYPE xsl:stylesheet [
<!ENTITY primary 'normalize-space(concat(primary/@sortas, primary[not(@sortas)]))'>
]>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0"
xmlns:func="http://exslt.org/functions"
xmlns:exslt="http://exslt.org/common"
xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0"
extension-element-prefixes="func exslt"
exclude-result-prefixes="func exslt i l"
xmlns:i="urn:cz-kosek:functions:index">
<!-- ********************************************************************
$Id$
********************************************************************
This file is part of the DocBook XSL Stylesheet distribution.
See ../README or http://docbook.sf.net/ for copyright
and other information.
******************************************************************** -->
<!-- Returns index group code for given term -->
<func:function name="i:group-index">
<xsl:param name="term"/>
<xsl:variable name="letters-rtf">
<xsl:variable name="lang">
<xsl:call-template name="l10n.language"/>
</xsl:variable>
<xsl:variable name="local.l10n.letters"
select="($local.l10n.xml//l:i18n/l:l10n[@language=$lang]/l:letters)[1]"/>
<xsl:variable name="l10n.letters"
select="($l10n.xml/l:i18n/l:l10n[@language=$lang]/l:letters)[1]"/>
<xsl:choose>
<xsl:when test="count($local.l10n.letters) > 0">
<xsl:copy-of select="$local.l10n.letters"/>
</xsl:when>
<xsl:when test="count($l10n.letters) > 0">
<xsl:copy-of select="$l10n.letters"/>
</xsl:when>
<xsl:otherwise>
<xsl:message>
<xsl:text>No "</xsl:text>
<xsl:value-of select="$lang"/>
<xsl:text>" localization of index grouping letters exists</xsl:text>
<xsl:choose>
<xsl:when test="$lang = 'en'">
<xsl:text>.</xsl:text>
</xsl:when>
<xsl:otherwise>
<xsl:text>; using "en".</xsl:text>
</xsl:otherwise>
</xsl:choose>
</xsl:message>
<xsl:copy-of select="($l10n.xml/l:i18n/l:l10n[@language='en']/l:letters)[1]"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="letters" select="exslt:node-set($letters-rtf)/*"/>
<xsl:variable name="long-letter-index" select="$letters/l:l[. = substring($term,1,2)]/@i"/>
<xsl:variable name="short-letter-index" select="$letters/l:l[. = substring($term,1,1)]/@i"/>
<xsl:variable name="letter-index">
<xsl:choose>
<xsl:when test="$long-letter-index">
<xsl:value-of select="$long-letter-index"/>
</xsl:when>
<xsl:when test="$short-letter-index">
<xsl:value-of select="$short-letter-index"/>
</xsl:when>
<xsl:otherwise>0</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<func:result select="number($letter-index)"/>
</func:function>
<!-- Return index group letter for given group code -->
<func:function name="i:group-letter">
<xsl:param name="index"/>
<xsl:variable name="letters-rtf">
<xsl:variable name="lang">
<xsl:call-template name="l10n.language"/>
</xsl:variable>
<xsl:variable name="local.l10n.letters"
select="($local.l10n.xml//l:i18n/l:l10n[@language=$lang]/l:letters)[1]"/>
<xsl:variable name="l10n.letters"
select="($l10n.xml/l:i18n/l:l10n[@language=$lang]/l:letters)[1]"/>
<xsl:choose>
<xsl:when test="count($local.l10n.letters) > 0">
<xsl:copy-of select="$local.l10n.letters"/>
</xsl:when>
<xsl:when test="count($l10n.letters) > 0">
<xsl:copy-of select="$l10n.letters"/>
</xsl:when>
<xsl:otherwise>
<xsl:message>
<xsl:text>No "</xsl:text>
<xsl:value-of select="$lang"/>
<xsl:text>" localization of index grouping letters exists</xsl:text>
<xsl:choose>
<xsl:when test="$lang = 'en'">
<xsl:text>.</xsl:text>
</xsl:when>
<xsl:otherwise>
<xsl:text>; using "en".</xsl:text>
</xsl:otherwise>
</xsl:choose>
</xsl:message>
<xsl:copy-of select="($l10n.xml/l:i18n/l:l10n[@language='en']/l:letters)[1]"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="letters" select="exslt:node-set($letters-rtf)/*"/>
<func:result select="$letters/l:l[@i=$index][1]"/>
</func:function>
<xsl:key name="group-code"
match="indexterm"
use="i:group-index(&primary;)"/>
</xsl:stylesheet>
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