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Subject: RE: [docbook-apps] Re: [docbook] Indexterms - see and seealso linked to another indexterm
On 2013-10-08 Bob Stayton wrote: > The basic problem is that the entries in the index are generated from > indexterm elements that reside in the document. You cannot directly use > the id of an indexterm, because that is used to link back into the > text. > So an index entry needs to generate its own unique id. Then the > stylesheet needs to match the text from the <see> to the first > <primary> > element that matches (there may be many). I am attaching my customization I use for some time (for FO/PDF). It generates required IDs [1] and corresponding links to them. I use it rather on simple indexes so it may not work in more complex ones. HTH, Jan __________ [1] IDs are composed from normalized primary/secondary entries (spaces are translated into dashes). Bob's approach to use the generate-id() function seems to be better here.
<?xml version='1.0'?>
<!DOCTYPE xsl:stylesheet [
<!ENTITY % common.entities SYSTEM "../../../docbook-stylesheets/1.78.1/common/entities.ent">
%common.entities;
]>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
xmlns:fo="http://www.w3.org/1999/XSL/Format"; xmlns:rx="http://www.renderx.com/XSL/Extensions";
exclude-result-prefixes="rx" version="1.0">
<!-- Indices interlinking & tilde -->
<!-- added block ID -->
<xsl:template match="indexterm" mode="index-div-basic">
<xsl:param name="scope" select="."/>
<xsl:param name="role" select="''"/>
<xsl:param name="type" select="''"/>
<xsl:variable name="key"
select="translate(substring(&primary;, 1, 1),
&lowercase;,&uppercase;)"/>
<xsl:if
test="key('letter', $key)[&scope;]
[count(.|key('primary', &primary;)[&scope;][1]) = 1]">
<fo:block id="id{$key}">
<xsl:if test="contains(concat(&lowercase;, &uppercase;), $key)">
<xsl:call-template name="indexdiv.title">
<xsl:with-param name="titlecontent">
<xsl:value-of select="translate($key, &lowercase;, &uppercase;)"/>
</xsl:with-param>
</xsl:call-template>
</xsl:if>
<fo:block xsl:use-attribute-sets="index.entry.properties">
<xsl:apply-templates
select="key('letter', $key)[&scope;]
[count(.|key('primary', &primary;)
[&scope;][1])=1]"
mode="index-primary">
<xsl:sort select="translate(&primary;, &lowercase;, &uppercase;)"/>
<xsl:with-param name="scope" select="$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>
<!-- added block ID -->
<xsl:template match="indexterm" mode="index-symbol-div">
<xsl:param name="scope" select="."/>
<xsl:param name="role" select="''"/>
<xsl:param name="type" select="''"/>
<xsl:variable name="key"
select="translate(substring(&primary;, 1, 1),&lowercase;,&uppercase;)"/>
<fo:block xsl:use-attribute-sets="index.entry.properties" id="id{$key}">
<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:with-param name="role" select="$role"/>
<xsl:with-param name="type" select="$type"/>
<xsl:sort select="translate(&primary;, &lowercase;, &uppercase;)"/>
</xsl:apply-templates>
</fo:block>
</xsl:template>
<xsl:template match="indexterm" mode="index-primary">
<xsl:param name="scope" select="."/>
<xsl:param name="role" select="''"/>
<xsl:param name="type" select="''"/>
<xsl:variable name="key" select="&primary;"/>
<xsl:variable name="refs" select="key('primary', $key)[&scope;]"/>
<xsl:variable name="term.separator">
<xsl:call-template name="index.separator">
<xsl:with-param name="key" select="'index.term.separator'"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="range.separator">
<xsl:call-template name="index.separator">
<xsl:with-param name="key" select="'index.range.separator'"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="number.separator">
<xsl:call-template name="index.separator">
<xsl:with-param name="key" select="'index.number.separator'"/>
</xsl:call-template>
</xsl:variable>
<fo:block start-indent="1em" text-indent="-1em">
<xsl:if test="$axf.extensions != 0">
<xsl:attribute name="axf:suppress-duplicate-page-number">true</xsl:attribute>
</xsl:if>
<xsl:attribute name="id">
<xsl:variable name="primary">
<xsl:call-template name="normalize-id">
<xsl:with-param name="id" select="normalize-space(primary)"/>
</xsl:call-template>
</xsl:variable>
<xsl:value-of select="concat('idx-', $primary)"/>
</xsl:attribute>
<xsl:value-of select="primary"/>
<xsl:choose>
<xsl:when test="$xep.extensions != 0">
<xsl:if test="$refs[not(see) and not(secondary)]">
<xsl:copy-of select="$term.separator"/>
<xsl:variable name="primary" select="&primary;"/>
<xsl:variable name="primary.significant"
select="concat(&primary;, $significant.flag)"/>
<rx:page-index list-separator="{$number.separator}"
range-separator="{$range.separator}">
<xsl:if test="$refs[@significance='preferred'][not(see) and not(secondary)]">
<rx:index-item
xsl:use-attribute-sets="index.preferred.page.properties xep.index.item.properties"
ref-key="{$primary.significant}"/>
</xsl:if>
<xsl:if
test="$refs[not(@significance) or @significance!='preferred'][not(see) and not(secondary)]">
<rx:index-item xsl:use-attribute-sets="xep.index.item.properties"
ref-key="{$primary}"/>
</xsl:if>
</rx:page-index>
</xsl:if>
</xsl:when>
<xsl:otherwise>
<xsl:variable name="page-number-citations">
<xsl:for-each select="$refs[not(see)
and not(secondary)]">
<xsl:apply-templates select="." mode="reference">
<xsl:with-param name="scope" select="$scope"/>
<xsl:with-param name="role" select="$role"/>
<xsl:with-param name="type" select="$type"/>
<xsl:with-param name="position" select="position()"/>
</xsl:apply-templates>
</xsl:for-each>
</xsl:variable>
<xsl:choose>
<xsl:when test="$passivetex.extensions != '0'">
<fotex:sort xmlns:fotex="http://www.tug.org/fotex";>
<xsl:copy-of select="$page-number-citations"/>
</fotex:sort>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$page-number-citations"/>
</xsl:otherwise>
</xsl:choose>
</xsl:otherwise>
</xsl:choose>
<xsl:if test="$refs[not(secondary)]/*[self::see]">
<xsl:apply-templates
select="$refs[generate-id() = generate-id(key('see', concat(&primary;, &sep;, &sep;, &sep;, see))[&scope;][1])]"
mode="index-see">
<xsl:with-param name="scope" select="$scope"/>
<xsl:with-param name="role" select="$role"/>
<xsl:with-param name="type" select="$type"/>
<xsl:sort select="translate(see, &lowercase;, &uppercase;)"/>
</xsl:apply-templates>
</xsl:if>
</fo:block>
<xsl:if test="$refs/secondary or $refs[not(secondary)]/*[self::seealso]">
<fo:block start-indent="1em">
<xsl:apply-templates
select="$refs[generate-id() = generate-id(key('see-also', concat(&primary;, &sep;, &sep;, &sep;, seealso))[&scope;][1])]"
mode="index-seealso">
<xsl:with-param name="scope" select="$scope"/>
<xsl:with-param name="role" select="$role"/>
<xsl:with-param name="type" select="$type"/>
<xsl:sort select="translate(seealso, &lowercase;, &uppercase;)"/>
</xsl:apply-templates>
<xsl:apply-templates
select="$refs[secondary and count(.|key('secondary', concat($key, &sep;, &secondary;))[&scope;][1]) = 1]"
mode="index-secondary">
<xsl:with-param name="scope" select="$scope"/>
<xsl:with-param name="role" select="$role"/>
<xsl:with-param name="type" select="$type"/>
<xsl:sort select="translate(&secondary;, &lowercase;, &uppercase;)"/>
</xsl:apply-templates>
</fo:block>
</xsl:if>
</xsl:template>
<xsl:template match="indexterm" mode="index-secondary">
<xsl:param name="scope" select="."/>
<xsl:param name="role" select="''"/>
<xsl:param name="type" select="''"/>
<xsl:variable name="key" select="concat(&primary;, &sep;, &secondary;)"/>
<xsl:variable name="refs" select="key('secondary', $key)[&scope;]"/>
<xsl:variable name="term.separator">
<xsl:call-template name="index.separator">
<xsl:with-param name="key" select="'index.term.separator'"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="range.separator">
<xsl:call-template name="index.separator">
<xsl:with-param name="key" select="'index.range.separator'"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="number.separator">
<xsl:call-template name="index.separator">
<xsl:with-param name="key" select="'index.number.separator'"/>
</xsl:call-template>
</xsl:variable>
<fo:block>
<xsl:attribute name="id">
<xsl:variable name="primary">
<xsl:call-template name="normalize-id">
<xsl:with-param name="id" select="normalize-space(primary)"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="secondary">
<xsl:call-template name="normalize-id">
<xsl:with-param name="id" select="normalize-space(secondary)"/>
</xsl:call-template>
</xsl:variable>
<xsl:value-of select="concat('idx-', $primary, '--', $secondary)"/>
</xsl:attribute>
<xsl:if test="$axf.extensions != 0">
<xsl:attribute name="axf:suppress-duplicate-page-number">true</xsl:attribute>
</xsl:if>
<xsl:text>~ </xsl:text>
<xsl:value-of select="secondary"/>
<xsl:choose>
<xsl:when test="$xep.extensions != 0">
<xsl:if test="$refs[not(see) and not(tertiary)]">
<xsl:copy-of select="$term.separator"/>
<xsl:variable name="primary" select="&primary;"/>
<xsl:variable name="secondary" select="&secondary;"/>
<xsl:variable name="primary.significant"
select="concat(&primary;, $significant.flag)"/>
<rx:page-index list-separator="{$number.separator}"
range-separator="{$range.separator}">
<xsl:if test="$refs[@significance='preferred'][not(see) and not(tertiary)]">
<rx:index-item
xsl:use-attribute-sets="index.preferred.page.properties xep.index.item.properties">
<xsl:attribute name="ref-key">
<xsl:value-of select="$primary.significant"/>
<xsl:text>, </xsl:text>
<xsl:value-of select="$secondary"/>
</xsl:attribute>
</rx:index-item>
</xsl:if>
<xsl:if
test="$refs[not(@significance) or @significance!='preferred'][not(see) and not(tertiary)]">
<rx:index-item xsl:use-attribute-sets="xep.index.item.properties">
<xsl:attribute name="ref-key">
<xsl:value-of select="$primary"/>
<xsl:text>, </xsl:text>
<xsl:value-of select="$secondary"/>
</xsl:attribute>
</rx:index-item>
</xsl:if>
</rx:page-index>
</xsl:if>
</xsl:when>
<xsl:otherwise>
<xsl:variable name="page-number-citations">
<xsl:for-each
select="$refs[not(see)
and not(tertiary)]">
<xsl:apply-templates select="." mode="reference">
<xsl:with-param name="scope" select="$scope"/>
<xsl:with-param name="role" select="$role"/>
<xsl:with-param name="type" select="$type"/>
<xsl:with-param name="position" select="position()"/>
</xsl:apply-templates>
</xsl:for-each>
</xsl:variable>
<xsl:choose>
<xsl:when test="$passivetex.extensions != '0'">
<fotex:sort xmlns:fotex="http://www.tug.org/fotex";>
<xsl:copy-of select="$page-number-citations"/>
</fotex:sort>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$page-number-citations"/>
</xsl:otherwise>
</xsl:choose>
</xsl:otherwise>
</xsl:choose>
<xsl:if test="$refs[not(tertiary)]/*[self::see]">
<xsl:apply-templates
select="$refs[generate-id() = generate-id(key('see', concat(&primary;, &sep;, &secondary;, &sep;, &sep;, see))[&scope;][1])]"
mode="index-see">
<xsl:with-param name="scope" select="$scope"/>
<xsl:with-param name="role" select="$role"/>
<xsl:with-param name="type" select="$type"/>
<xsl:sort select="translate(see, &lowercase;, &uppercase;)"/>
</xsl:apply-templates>
</xsl:if>
</fo:block>
<xsl:if test="$refs/tertiary or $refs[not(tertiary)]/*[self::seealso]">
<fo:block start-indent="2em">
<xsl:apply-templates
select="$refs[generate-id() = generate-id(key('see-also', concat(&primary;, &sep;, &secondary;, &sep;, &sep;, seealso))[&scope;][1])]"
mode="index-seealso">
<xsl:with-param name="scope" select="$scope"/>
<xsl:with-param name="role" select="$role"/>
<xsl:with-param name="type" select="$type"/>
<xsl:sort select="translate(seealso, &lowercase;, &uppercase;)"/>
</xsl:apply-templates>
<xsl:apply-templates
select="$refs[tertiary and count(.|key('tertiary', concat($key, &sep;, &tertiary;))[&scope;][1]) = 1]"
mode="index-tertiary">
<xsl:with-param name="scope" select="$scope"/>
<xsl:with-param name="role" select="$role"/>
<xsl:with-param name="type" select="$type"/>
<xsl:sort select="translate(&tertiary;, &lowercase;, &uppercase;)"/>
</xsl:apply-templates>
</fo:block>
</xsl:if>
</xsl:template>
<xsl:template match="indexterm" mode="index-tertiary">
<xsl:param name="scope" select="."/>
<xsl:param name="role" select="''"/>
<xsl:param name="type" select="''"/>
<xsl:variable name="key"
select="concat(&primary;, &sep;, &secondary;, &sep;, &tertiary;)"/>
<xsl:variable name="refs" select="key('tertiary', $key)[&scope;]"/>
<xsl:variable name="term.separator">
<xsl:call-template name="index.separator">
<xsl:with-param name="key" select="'index.term.separator'"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="range.separator">
<xsl:call-template name="index.separator">
<xsl:with-param name="key" select="'index.range.separator'"/>
</xsl:call-template>
</xsl:variable>
<xsl:variable name="number.separator">
<xsl:call-template name="index.separator">
<xsl:with-param name="key" select="'index.number.separator'"/>
</xsl:call-template>
</xsl:variable>
<fo:block>
<xsl:if test="$axf.extensions != 0">
<xsl:attribute name="axf:suppress-duplicate-page-number">true</xsl:attribute>
</xsl:if>
<xsl:text>~ ~ </xsl:text>
<xsl:value-of select="tertiary"/>
<xsl:choose>
<xsl:when test="$xep.extensions != 0">
<xsl:if test="$refs[not(see)]">
<xsl:copy-of select="$term.separator"/>
<xsl:variable name="primary" select="&primary;"/>
<xsl:variable name="secondary" select="&secondary;"/>
<xsl:variable name="tertiary" select="&tertiary;"/>
<xsl:variable name="primary.significant"
select="concat(&primary;, $significant.flag)"/>
<rx:page-index list-separator="{$number.separator}"
range-separator="{$range.separator}">
<xsl:if test="$refs[@significance='preferred'][not(see)]">
<rx:index-item
xsl:use-attribute-sets="index.preferred.page.properties xep.index.item.properties">
<xsl:attribute name="ref-key">
<xsl:value-of select="$primary.significant"/>
<xsl:text>, </xsl:text>
<xsl:value-of select="$secondary"/>
<xsl:text>, </xsl:text>
<xsl:value-of select="$tertiary"/>
</xsl:attribute>
</rx:index-item>
</xsl:if>
<xsl:if
test="$refs[not(@significance) or @significance!='preferred'][not(see)]">
<rx:index-item xsl:use-attribute-sets="xep.index.item.properties">
<xsl:attribute name="ref-key">
<xsl:value-of select="$primary"/>
<xsl:text>, </xsl:text>
<xsl:value-of select="$secondary"/>
<xsl:text>, </xsl:text>
<xsl:value-of select="$tertiary"/>
</xsl:attribute>
</rx:index-item>
</xsl:if>
</rx:page-index>
</xsl:if>
</xsl:when>
<xsl:otherwise>
<xsl:variable name="page-number-citations">
<xsl:for-each select="$refs[not(see)]">
<xsl:apply-templates select="." mode="reference">
<xsl:with-param name="scope" select="$scope"/>
<xsl:with-param name="role" select="$role"/>
<xsl:with-param name="type" select="$type"/>
<xsl:with-param name="position" select="position()"/>
</xsl:apply-templates>
</xsl:for-each>
</xsl:variable>
<xsl:choose>
<xsl:when test="$passivetex.extensions != '0'">
<fotex:sort xmlns:fotex="http://www.tug.org/fotex";>
<xsl:copy-of select="$page-number-citations"/>
</fotex:sort>
</xsl:when>
<xsl:otherwise>
<xsl:copy-of select="$page-number-citations"/>
</xsl:otherwise>
</xsl:choose>
</xsl:otherwise>
</xsl:choose>
<xsl:if test="$refs/see">
<xsl:apply-templates
select="$refs[generate-id() = generate-id(key('see', concat(&primary;, &sep;, &secondary;, &sep;, &tertiary;, &sep;, see))[&scope;][1])]"
mode="index-see">
<xsl:with-param name="scope" select="$scope"/>
<xsl:with-param name="role" select="$role"/>
<xsl:with-param name="type" select="$type"/>
<xsl:sort select="translate(see, &lowercase;, &uppercase;)"/>
</xsl:apply-templates>
</xsl:if>
</fo:block>
</xsl:template>
<xsl:template match="indexterm" mode="index-see">
<xsl:param name="scope" select="."/>
<xsl:param name="role" select="''"/>
<xsl:param name="type" select="''"/>
<fo:inline>
<xsl:text> (</xsl:text>
<xsl:call-template name="gentext">
<xsl:with-param name="key" select="'see'"/>
</xsl:call-template>
<xsl:text> </xsl:text>
<fo:basic-link xsl:use-attribute-sets="index.page.number.properties">
<xsl:attribute name="internal-destination">
<xsl:text>idx-</xsl:text>
<xsl:call-template name="normalize-id">
<xsl:with-param name="id" select="normalize-space(see)"/>
</xsl:call-template>
</xsl:attribute>
<xsl:value-of select="see"/>
</fo:basic-link>
<xsl:text>)</xsl:text>
</fo:inline>
</xsl:template>
<xsl:template match="indexterm" mode="index-seealso">
<xsl:param name="scope" select="."/>
<xsl:param name="role" select="''"/>
<xsl:param name="type" select="''"/>
<xsl:for-each select="seealso">
<xsl:sort select="translate(., &lowercase;, &uppercase;)"/>
<fo:block>
<xsl:text>(</xsl:text>
<xsl:call-template name="gentext">
<xsl:with-param name="key" select="'seealso'"/>
</xsl:call-template>
<xsl:text> </xsl:text>
<fo:basic-link xsl:use-attribute-sets="index.page.number.properties">
<xsl:attribute name="internal-destination">
<xsl:text>idx-</xsl:text>
<xsl:call-template name="normalize-id">
<xsl:with-param name="id" select="normalize-space(.)"/>
</xsl:call-template>
</xsl:attribute>
<xsl:value-of select="."/>
</fo:basic-link>
<xsl:text>)</xsl:text>
</fo:block>
</xsl:for-each>
</xsl:template>
</xsl:stylesheet>
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