<?xml version='1.0' encoding='ISO-8859-1'?>

<!--
$LastChangedBy$
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<!ENTITY uppercase "' '">
<!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 scope     "count(ancestor::node()|$scope) = count(ancestor::node())">
<!ENTITY section   "(ancestor-or-self::set |ancestor-or-self::book |ancestor-or-self::part |ancestor-or-self::reference |ancestor-or-self::partintro |ancestor-or-self::chapter |ancestor-or-self::appendix |ancestor-or-self::preface |ancestor-or-self::article |ancestor-or-self::section |ancestor-or-self::sect1 |ancestor-or-self::sect2 |ancestor-or-self::sect3 |ancestor-or-self::sect4 |ancestor-or-self::sect5 |ancestor-or-self::refentry |ancestor-or-self::refsect1 |ancestor-or-self::refsect2 |ancestor-or-self::refsect3 |ancestor-or-self::simplesect |ancestor-or-self::bibliography |ancestor-or-self::glossary |ancestor-or-self::index |ancestor-or-self::webpage)[last()]">
<!ENTITY section.id "generate-id(&section;)">
<!ENTITY sep '" "'>
]>

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
                xmlns="http://www.w3.org/1999/xhtml"
                version="1.0">

  <!-- This stylesheet controls how the Index is generated.
       Due how they are created, the original XHTML stylesheets don't make
       use of the entities from {docbook-xsl}/common/entities.ent.
       We add the relevant ones in the DOCTYPE to have more readable templates.
       Also, we remove support for @role and @type based Index due that it is
       broken when used with @zone based cross-references. -->

    <!-- The file name of the Index page.
         There is no upstream template with match="index", only a global
         match="*", thus the next template is enought to force the Index
         filename. -->
  <xsl:template match="index" mode="recursive-chunk-filename">
    <xsl:text>longindex.html</xsl:text>
  </xsl:template>

    <!-- The Index title in the longindex.html page:
           Removed a lot of code not useful for us.
           Forced h1 title size. -->
    <!-- The original template is in {docbook-xsl}/xhtml/titlepage.templates.xsl -->
  <xsl:template name="index.titlepage">
    <h1 class="index">
      <xsl:call-template name="gentext">
        <xsl:with-param name="key" select="$index-title"/>
      </xsl:call-template>
    </h1>
  </xsl:template>

    <!--Divisions:
          Translate alphabetical divisons titles to by-type titles.
          Added gentext support to divisions titles.
          Using h2 for divisions titles.
          Changed output from dl format to ul format. -->
    <!-- The original template is in {docbook-xsl}/xhtml/autoidx.xsl -->
  <xsl:template match="indexterm" mode="index-div-basic">
    <xsl:param name="scope" select="."/>
    <xsl:variable name="key" select="translate(substring(&primary;, 1, 1),&lowercase;,&uppercase;)"/>
    <xsl:variable name="divtitle" select="translate($key, &lowercase;, &uppercase;)"/>
      <!-- Make sure that we don't generate a div if there are no terms in scope -->
    <xsl:if test="key('letter', $key)[&scope;] [count(.|key('primary', &primary;)[&scope;][1]) = 1]">
      <xsl:if test="contains(concat(&lowercase;, &uppercase;), $key)">
        <h2>
          <xsl:choose>
            <xsl:when test="$divtitle = 'A'">
              <a id="package-index" name="package-index"/>
              <xsl:call-template name="gentext">
                <xsl:with-param name="key">Packages</xsl:with-param>
              </xsl:call-template>
            </xsl:when>
            <xsl:when test="$divtitle = 'B'">
              <a id="program-index" name="program-index"/>
              <xsl:call-template name="gentext">
                <xsl:with-param name="key">Programs</xsl:with-param>
              </xsl:call-template>
            </xsl:when>
            <xsl:when test="$divtitle = 'C'">
              <a id="library-index" name="library-index"/>
              <xsl:call-template name="gentext">
                <xsl:with-param name="key">Libraries</xsl:with-param>
              </xsl:call-template>
            </xsl:when>
            <xsl:when test="$divtitle = 'D'">
              <xsl:choose>
                <xsl:when test="$book-type = 'blfs'">
                  <a id="kernel-config-index" name="kernel-config-index"/>
                  <xsl:call-template name="gentext">
                    <xsl:with-param name="key">Kernel Configuration</xsl:with-param>
                  </xsl:call-template>
                </xsl:when>
                <xsl:otherwise>
                  <a id="scripts-index" name="scripts-index"/>
                  <xsl:call-template name="gentext">
                    <xsl:with-param name="key">Scripts</xsl:with-param>
                  </xsl:call-template>
                </xsl:otherwise>
              </xsl:choose>
            </xsl:when>
            <xsl:when test="$divtitle = 'E'">
              <xsl:choose>
                <xsl:when test="$book-type = 'blfs'">
                  <a id="config-file-index" name="config-file-index"/>
                  <xsl:call-template name="gentext">
                    <xsl:with-param name="key">Configuration Files</xsl:with-param>
                  </xsl:call-template>
                </xsl:when>
                <xsl:otherwise>
                  <a id="other-index" name="other-index"/>
                  <xsl:call-template name="gentext">
                    <xsl:with-param name="key">Others</xsl:with-param>
                  </xsl:call-template>
                </xsl:otherwise>
              </xsl:choose>
            </xsl:when>
            <xsl:when test="$divtitle = 'F'">
                <a id="bootscript-index" name="bootscript-index"/>
                <xsl:call-template name="gentext">
                  <xsl:with-param name="key">Bootscripts</xsl:with-param>
                </xsl:call-template>
            </xsl:when>
            <xsl:when test="$divtitle = 'G'">
              <a id="other-index" name="other-index"/>
              <xsl:call-template name="gentext">
                <xsl:with-param name="key">Others</xsl:with-param>
              </xsl:call-template>
            </xsl:when>
            <xsl:otherwise>
              <xsl:value-of select="$divtitle"/>
            </xsl:otherwise>
          </xsl:choose>
        </h2>
      </xsl:if>
      <ul>
        <xsl:apply-templates select="key('letter', $key)[&scope;] [count(.|key('primary', &primary;)[&scope;][1])=1]"
                              mode="index-primary">
          <xsl:with-param name="scope" select="$scope"/>
          <xsl:sort select="translate(&primary;, &lowercase;, &uppercase;)"/>
        </xsl:apply-templates>
      </ul>
    </xsl:if>
  </xsl:template>

    <!-- Dropping $term.separator and $number.separator from here.
         We add our customized ones in the output flow.
         As all our indexterm have @zone attributes, removed a lot of
         unused code. -->
    <!-- The original template is in {docbook-xsl}/xhtml/autoidx.xsl -->
  <xsl:template match="indexterm" mode="reference">
    <xsl:param name="scope" select="."/>
    <xsl:call-template name="reference">
      <xsl:with-param name="zones" select="normalize-space(@zone)"/>
      <xsl:with-param name="scope" select="$scope"/>
    </xsl:call-template>
  </xsl:template>

    <!-- Primary items:
           Changed the output format from dl to ul.
           Placed the term and separator into strong tags.
           Placed the target links into a div.
           Removed code for unused see and sealso childs. -->
    <!-- The original template is in {docbook-xsl}/xhtml/autoidx.xsl -->
  <xsl:template match="indexterm" mode="index-primary">
    <xsl:param name="scope" select="."/>
    <xsl:variable name="key" select="&primary;"/>
    <xsl:variable name="refs" select="key('primary', $key)[&scope;]"/>
    <li>
      <strong class="item">
        <xsl:value-of select="primary"/>
        <xsl:text>: </xsl:text>
      </strong>
      <span class='indexref'>
        <xsl:for-each select="$refs[generate-id() = generate-id(key('primary-section',concat($key, &sep;, &section.id;))[&scope;][1])]">
          <xsl:apply-templates select="." mode="reference">
            <xsl:with-param name="scope" select="$scope"/>
          </xsl:apply-templates>
        </xsl:for-each>
      </span>
      <xsl:if test="$refs/secondary">
        <ul>
          <xsl:apply-templates select="$refs[secondary and count(.|key('secondary', concat($key, &sep;, &secondary;))[&scope;][1]) = 1]"
                               mode="index-secondary">
            <xsl:with-param name="scope" select="$scope"/>
            <xsl:sort select="translate(&secondary;, &lowercase;, &uppercase;)"/>
          </xsl:apply-templates>
         </ul>
      </xsl:if>
    </li>
  </xsl:template>

    <!-- Secondary items:
           Changed the output format from dl to ul.
           Placed the term and separator into strong tags.
           Placed the target links into a div.
           Removed code for unused tertiary, see, and sealso childs. -->
    <!-- The original template is in {docbook-xsl}/xhtml/autoidx.xsl -->
  <xsl:template match="indexterm" mode="index-secondary">
    <xsl:param name="scope" select="."/>
    <xsl:variable name="key" select="concat(&primary;, &sep;, &secondary;)"/>
    <xsl:variable name="refs" select="key('secondary', $key)[&scope;]"/>
    <li>
      <strong class="secitem">
        <xsl:value-of select="secondary"/>
        <xsl:text>: </xsl:text>
      </strong>
      <span class='indexref'>
        <xsl:for-each select="$refs[generate-id() = generate-id(key('secondary-section', concat($key, &sep;, &section.id;))[&scope;][1])]">
          <xsl:apply-templates select="." mode="reference">
            <xsl:with-param name="scope" select="$scope"/>
          </xsl:apply-templates>
        </xsl:for-each>
      </span>
    </li>
  </xsl:template>

    <!-- The target links:
           Changed links separator.
           On the second @zone link, we use a fixed string for the text
           with gentext support.
           Assume that there is no more than 2 @zone in a indexterm.
           Use href.target.uri named template to resolve the links. It is faster
           than the default href.target named template. -->
    <!-- The original template is in {docbook-xsl}/xhtml/autoidx.xsl -->
  <xsl:template name="reference">
    <xsl:param name="scope" select="."/>
    <xsl:param name="zones"/>
    <xsl:choose>
      <xsl:when test="contains($zones, ' ')">
        <xsl:variable name="zone" select="substring-before($zones, ' ')"/>
        <xsl:variable name="zone2" select="substring-after($zones, ' ')"/>
        <xsl:variable name="target" select="key('sections', $zone)[&scope;]"/>
        <xsl:variable name="target2" select="key('sections', $zone2)[&scope;]"/>
        <a>
          <xsl:attribute name="href">
            <xsl:call-template name="href.target.uri">
              <xsl:with-param name="object" select="$target[1]"/>
            </xsl:call-template>
          </xsl:attribute>
          <xsl:apply-templates select="$target[1]" mode="index-title-content"/>
        </a>
        <xsl:text> -- </xsl:text>
        <a>
          <xsl:attribute name="href">
            <xsl:call-template name="href.target.uri">
              <xsl:with-param name="object" select="$target2[1]"/>
            </xsl:call-template>
          </xsl:attribute>
          <xsl:call-template name="gentext">
            <xsl:with-param name="key">description</xsl:with-param>
          </xsl:call-template>
        </a>
        <br/>
      </xsl:when>
      <xsl:otherwise>
        <xsl:variable name="zone" select="$zones"/>
        <xsl:variable name="target" select="key('sections', $zone)[&scope;]"/>
        <a>
          <xsl:attribute name="href">
            <xsl:call-template name="href.target.uri">
              <xsl:with-param name="object" select="$target[1]"/>
            </xsl:call-template>
          </xsl:attribute>
          <xsl:apply-templates select="$target[1]" mode="index-title-content"/>
        </a>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

</xsl:stylesheet>
