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<?xml version="1.0"?>
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<!DOCTYPE xsl:stylesheet [
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<!ENTITY primary   'normalize-space(concat(primary/@sortas, primary[not(@sortas) or @sortas = ""]))'>
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<!ENTITY secondary 'normalize-space(concat(secondary/@sortas, secondary[not(@sortas) or @sortas = ""]))'>
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<!ENTITY tertiary  'normalize-space(concat(tertiary/@sortas, tertiary[not(@sortas) or @sortas = ""]))'>
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<!ENTITY sep '" "'>
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<!-- Documents using the kimber index method must have a lang attribute -->
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<!-- Only one of these should be present in the entity -->
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<!ENTITY scope 'count(ancestor::node()|$scope) = count(ancestor::node())
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                and ($role = @role or $type = @type or
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                (string-length($role) = 0 and string-length($type) = 0))'>
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]>
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<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
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                xmlns:fo="http://www.w3.org/1999/XSL/Format"
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                xmlns:rx="http://www.renderx.com/XSL/Extensions"
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                xmlns:axf="http://www.antennahouse.com/names/XSL/Extensions"
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                xmlns:i="urn:cz-kosek:functions:index"
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                xmlns:l="http://docbook.sourceforge.net/xmlns/l10n/1.0"
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                xmlns:func="http://exslt.org/functions"
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                xmlns:exslt="http://exslt.org/common"
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                extension-element-prefixes="func exslt"
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                exclude-result-prefixes="func exslt i l"
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                version="1.0">
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<!-- ********************************************************************
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     $Id$
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     ********************************************************************
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     This file is part of the DocBook XSL Stylesheet distribution.
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     See ../README or http://docbook.sf.net/ for copyright
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     copyright and other information.
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     ******************************************************************** -->
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<!-- ==================================================================== -->
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<!-- The "kosek" method contributed by Jirka Kosek. -->
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<xsl:include href="../common/autoidx-kosek.xsl"/>
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<xsl:template name="generate-kosek-index">
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  <xsl:param name="scope" select="NOTANODE"/>
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  <xsl:variable name="vendor" select="system-property('xsl:vendor')"/>
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  <xsl:if test="contains($vendor, 'libxslt')">
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    <xsl:message terminate="yes">
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      <xsl:text>ERROR: the 'kosek' index method does not </xsl:text>
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      <xsl:text>work with the xsltproc XSLT processor.</xsl:text>
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    </xsl:message>
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  </xsl:if>
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  <xsl:if test="contains($vendor, 'Saxonica')">
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    <xsl:message terminate="yes">
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      <xsl:text>ERROR: the 'kosek' index method does not </xsl:text>
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      <xsl:text>work with the Saxon 8 XSLT processor.</xsl:text>
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    </xsl:message>
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  </xsl:if>
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  <xsl:if test="not(function-available('exslt:node-set') or
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                    function-available('exslt:nodeSet'))">
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    <xsl:message terminate="yes">
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      <xsl:text>ERROR: the 'kosek' index method requires the </xsl:text>
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      <xsl:text>exslt:node-set() function. Use a processor that </xsl:text>
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      <xsl:text>has it, or use a different index method.</xsl:text>
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    </xsl:message>
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  </xsl:if>
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  <xsl:if test="not(function-available('i:group-index'))">
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    <xsl:message terminate="yes">
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      <xsl:text>ERROR: the 'kosek' index method requires the&#xA;</xsl:text>
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      <xsl:text>index extension functions be imported:&#xA;</xsl:text>
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      <xsl:text>  xsl:import href="common/autoidx-kosek.xsl"</xsl:text>
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    </xsl:message>
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  </xsl:if>
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  <xsl:variable name="role">
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    <xsl:if test="$index.on.role != 0">
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      <xsl:value-of select="@role"/>
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    </xsl:if>
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  </xsl:variable>
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  <xsl:variable name="type">
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    <xsl:if test="$index.on.type != 0">
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      <xsl:value-of select="@type"/>
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    </xsl:if>
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  </xsl:variable>
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  <xsl:variable name="terms"
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                select="//indexterm[count(.|key('group-code',
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                                          i:group-index(&primary;))
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                                          [&scope;][1]) = 1
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                                and not(@class = 'endofrange')]"/>
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  <fo:block>
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    <xsl:apply-templates select="$terms" mode="index-div-kosek">
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      <xsl:with-param name="scope" select="$scope"/>
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      <xsl:with-param name="role" select="$role"/>
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      <xsl:with-param name="type" select="$type"/>
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      <xsl:sort select="i:group-index(&primary;)" data-type="number"/>
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    </xsl:apply-templates>
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  </fo:block>
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</xsl:template>
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<xsl:template match="indexterm" mode="index-div-kosek">
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  <xsl:param name="scope" select="."/>
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  <xsl:param name="role" select="''"/>
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  <xsl:param name="type" select="''"/>
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  <xsl:variable name="key"
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                select="i:group-index(&primary;)"/>
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  <xsl:variable name="lang">
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    <xsl:call-template name="l10n.language"/>
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  </xsl:variable>
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  <xsl:if test="key('group-code', $key)[&scope;]
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                [count(.|key('primary', &primary;)[&scope;][1]) = 1]">
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    <fo:block>
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      <xsl:call-template name="indexdiv.title">
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        <xsl:with-param name="titlecontent">
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          <xsl:choose>
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            <xsl:when test="$key = 0">
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              <xsl:call-template name="gentext">
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                <xsl:with-param name="key" select="'index symbols'"/>
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              </xsl:call-template>
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            </xsl:when>
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            <xsl:otherwise>
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              <xsl:value-of select="i:group-letter($key)"/>
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            </xsl:otherwise>
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          </xsl:choose>
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        </xsl:with-param>
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      </xsl:call-template>
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      <fo:block>
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        <xsl:apply-templates select="key('group-code', $key)[&scope;]
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                                     [count(.|key('primary', &primary;)
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                                     [&scope;][1])=1]"
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                             mode="index-primary">
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          <xsl:sort select="&primary;" lang="{$lang}"/>
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          <xsl:with-param name="scope" select="$scope"/>
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          <xsl:with-param name="role" select="$role"/>
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          <xsl:with-param name="type" select="$type"/>
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        </xsl:apply-templates>
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      </fo:block>
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    </fo:block>
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  </xsl:if>
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</xsl:template>
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</xsl:stylesheet>