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<?xml version="1.0"?>
<!DOCTYPE xsl:stylesheet [

<!ENTITY primary   'normalize-space(concat(primary/@sortas, primary[not(@sortas) or @sortas = ""]))'>
<!ENTITY secondary 'normalize-space(concat(secondary/@sortas, secondary[not(@sortas) or @sortas = ""]))'>
<!ENTITY tertiary  'normalize-space(concat(tertiary/@sortas, tertiary[not(@sortas) or @sortas = ""]))'>

<!ENTITY sep '" "'>
<!-- Documents using the kimber index method must have a lang attribute -->
<!-- Only one of these should be present in the entity -->
<!ENTITY lang 'concat(/*/@lang, /*/@xml:lang)'>

<!ENTITY scope 'count(ancestor::node()|$scope) = count(ancestor::node())
               and ($role = @role or $type = @type or
               (string-length($role) = 0 and string-length($type) = 0))'>

]>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
               xmlns:fo="http://www.w3.org/1999/XSL/Format"
               xmlns:k="java:com.isogen.saxoni18n.Saxoni18nService"
               exclude-result-prefixes="k"
               version="1.0">

<!-- ********************************************************************
    $Id$
    ********************************************************************

    This file is part of the DocBook XSL Stylesheet distribution.
    See ../README or http://docbook.sf.net/ for copyright
    copyright and other information.

    ******************************************************************** -->

<!-- ==================================================================== -->
<!-- The "kimber" method contributed by Eliot Kimber of Innodata Isogen.  -->
<!-- ==================================================================== -->
<!--   *** THIS MODULE ONLY WORKS WITH SAXON 6 OR SAXON 8 ***             -->
<!-- ==================================================================== -->

<xsl:include href="../common/autoidx-kimber.xsl"/>

<!-- Java sort apparently works only on lang part, not country -->
<xsl:param name="sort.lang">
  <xsl:choose>
    <xsl:when test="contains(&lang;, '-')">
      <xsl:value-of select="substring-before(&lang;, '-')"/>
    </xsl:when>
    <xsl:when test="contains(&lang;, '_')">
      <xsl:value-of select="substring-before(&lang;, '_')"/>
    </xsl:when>
    <xsl:otherwise>
      <xsl:value-of select="&lang;"/>
    </xsl:otherwise>
  </xsl:choose>
</xsl:param>

<xsl:template name="generate-kimber-index">
  <xsl:param name="scope" select="NOTANODE"/>

  <xsl:variable name="vendor" select="system-property('xsl:vendor')"/>
  <xsl:if test="not(contains($vendor, 'SAXON '))">
    <xsl:message terminate="yes">
      <xsl:text>ERROR: the 'kimber' index method requires the </xsl:text>
      <xsl:text>Saxon version 6 or 8 XSLT processor.</xsl:text>
    </xsl:message>
  </xsl:if>

  <xsl:if test="not(function-available('k:getIndexGroupKey'))">
    <xsl:message terminate="yes">
      <xsl:text>ERROR: the 'kimber' index method requires the </xsl:text>
      <xsl:text>Innodata Isogen &#x0A;Java extensions for </xsl:text>
      <xsl:text>internationalized indexes. &#x0A;Install those </xsl:text>
      <xsl:text>extensions, or use a different index method.&#x0A;</xsl:text>
      <xsl:text>For more information, see:&#x0A;</xsl:text>
      <xsl:text>http://www.innodata-isogen.com/knowledge_center/tools_downloads/i18nsupport</xsl:text>
    </xsl:message>
  </xsl:if>

  <xsl:variable name="role">
    <xsl:if test="$index.on.role != 0">
      <xsl:value-of select="@role"/>
    </xsl:if>
  </xsl:variable>

  <xsl:variable name="type">
    <xsl:if test="$index.on.type != 0">
      <xsl:value-of select="@type"/>
    </xsl:if>
  </xsl:variable>

  <xsl:variable name="terms"
               select="//indexterm[count(.|key('k-group',
                  k:getIndexGroupKey(&lang;, &primary;))
                  [&scope;][1]) = 1
                  and not(@class = 'endofrange')]"/>


  <xsl:variable name="alphabetical"
               select="$terms[not(starts-with(
               k:getIndexGroupKey(&lang;, &primary;),
               '#NUMERIC'
               ))]"/>


  <xsl:variable name="others"
               select="$terms[starts-with(
               k:getIndexGroupKey(&lang;, &primary;),
               '#NUMERIC'
               )]"/>


  <fo:block>
    <xsl:if test="$others">
      <xsl:call-template name="indexdiv.title">
        <xsl:with-param name="titlecontent">
          <xsl:call-template name="gentext">
            <xsl:with-param name="key" select="'index symbols'"/>
          </xsl:call-template>
        </xsl:with-param>
      </xsl:call-template>

      <fo:block>
        <xsl:apply-templates select="$others"
                            mode="index-symbol-div">
          <xsl:with-param name="scope" select="$scope"/>
          <xsl:with-param name="role" select="$role"/>
          <xsl:with-param name="type" select="$type"/>
          <xsl:sort lang="{$sort.lang}"
             select="k:getIndexGroupSortKey(&lang;,
                     k:getIndexGroupKey(&lang;, &primary;))"/>

        </xsl:apply-templates>
      </fo:block>
    </xsl:if>

    <xsl:apply-templates select="$alphabetical"
                        mode="index-div-kimber">
      <xsl:with-param name="scope" select="$scope"/>
      <xsl:with-param name="role" select="$role"/>
      <xsl:with-param name="type" select="$type"/>
      <xsl:sort lang="{$sort.lang}"
            select="k:getIndexGroupSortKey(&lang;,
                    k:getIndexGroupKey(&lang;, &primary;))"/>

    </xsl:apply-templates>
  </fo:block>

</xsl:template>

<xsl:template match="indexterm" mode="index-div-kimber">
  <xsl:param name="scope" select="."/>
  <xsl:param name="role" select="''"/>
  <xsl:param name="type" select="''"/>

  <xsl:variable name="key"
         select="k:getIndexGroupKey(&lang;, &primary;)"/>

  <xsl:variable name="label"
         select="k:getIndexGroupLabel(&lang;, $key)"/>

  <xsl:if test="key('k-group', $key)[&scope;]
               [count(.|key('primary', &primary;)[&scope;][1]) = 1]">

    <fo:block>
      <xsl:call-template name="indexdiv.title">
        <xsl:with-param name="titlecontent">
          <xsl:value-of select="$label"/>
        </xsl:with-param>
      </xsl:call-template>
      <fo:block>
        <xsl:apply-templates select="key('k-group', $key)[&scope;]
                           [count(.|key('primary', &primary;)[&scope;]
                           [1])=1]"

                            mode="index-primary">
          <xsl:sort select="&primary;" lang="{$sort.lang}"/>
          <xsl:with-param name="scope" select="$scope"/>
          <xsl:with-param name="role" select="$role"/>
          <xsl:with-param name="type" select="$type"/>
        </xsl:apply-templates>
      </fo:block>
    </fo:block>
  </xsl:if>
</xsl:template>

</xsl:stylesheet>