/usr/share/boostbook/xsl/docbook.xsl is in libboost1.54-tools-dev 1.54.0-4ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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<!--
Copyright (c) 2002 Douglas Gregor <doug.gregor -at- gmail.com>
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt)
-->
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xi="http://www.w3.org/2001/XInclude"
version="1.0">
<xsl:include href="reference.xsl"/>
<xsl:output method="xml"
doctype-public="-//OASIS//DTD DocBook XML V4.2//EN"
doctype-system="http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd"/>
<!-- The maximum number of columns allowed in preformatted text -->
<xsl:param name="max-columns" select="78"/>
<!-- The root of the Boost directory -->
<xsl:param name="boost.root" select="'../..'"/>
<!-- A space-separated list of libraries to include in the
output. If this list is empty, all libraries will be included. -->
<xsl:param name="boost.include.libraries" select="''"/>
<!-- Whether to rewrite relative URL's to point to the website -->
<xsl:param name="boost.url.prefix"/>
<!-- A space-separated list of xml elements in the input file for which
whitespace should be preserved -->
<xsl:preserve-space elements="*"/>
<!-- The root for boost headers -->
<xsl:param name="boost.header.root">
<xsl:if test="$boost.url.prefix">
<xsl:value-of select="$boost.url.prefix"/>
<xsl:text>/</xsl:text>
</xsl:if>
<xsl:value-of select="$boost.root"/>
</xsl:param>
<!-- The prefix for 'boost:' links. -->
<xsl:variable name="boost.protocol.text">
<xsl:if test="($boost.url.prefix != '') and (contains($boost.root, '://') = 0)">
<xsl:value-of select="concat($boost.url.prefix, '/', $boost.root)"/>
</xsl:if>
<xsl:if test="($boost.url.prefix = '') or contains($boost.root, '://')">
<xsl:value-of select="$boost.root"/>
</xsl:if>
</xsl:variable>
<xsl:template match="library-reference">
<xsl:choose>
<xsl:when test="ancestor::library-reference">
<xsl:apply-templates/>
</xsl:when>
<xsl:otherwise>
<section>
<xsl:choose>
<xsl:when test="@id">
<xsl:attribute name="id">
<xsl:value-of select="@id"/>
</xsl:attribute>
</xsl:when>
<xsl:when test="ancestor::library/attribute::id">
<xsl:attribute name="id">
<xsl:value-of select="ancestor::library/attribute::id"/>
<xsl:text>.reference</xsl:text>
</xsl:attribute>
</xsl:when>
</xsl:choose>
<xsl:if test="not(title)">
<title>
<xsl:text>Reference</xsl:text>
</title>
</xsl:if>
<xsl:if test="concept">
<section>
<xsl:choose>
<xsl:when test="@id">
<xsl:attribute name="id">
<xsl:value-of select="@id"/>
<xsl:text>.concepts</xsl:text>
</xsl:attribute>
</xsl:when>
<xsl:when test="ancestor::library/attribute::id">
<xsl:attribute name="id">
<xsl:value-of select="ancestor::library/attribute::id"/>
<xsl:text>.concepts</xsl:text>
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</xsl:choose>
<title>Concepts</title>
<itemizedlist>
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<listitem><simpara>
<xsl:call-template name="internal-link">
<xsl:with-param name="to">
<xsl:call-template name="generate.id"/>
</xsl:with-param>
<xsl:with-param name="text" select="@name"/>
</xsl:call-template>
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<xsl:apply-templates/>
</section>
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<xsl:template match="header">
<xsl:if test="*">
<section>
<xsl:attribute name="id">
<xsl:call-template name="generate.id"/>
</xsl:attribute>
<title>
<xsl:text>Header <</xsl:text>
<ulink>
<xsl:attribute name="url">
<xsl:value-of select="$boost.header.root"/>
<xsl:text>/</xsl:text>
<xsl:value-of select="@name"/>
</xsl:attribute>
<xsl:value-of select="@name"/>
</ulink>
<xsl:text>></xsl:text>
</title>
<xsl:apply-templates select="para|section" mode="annotation"/>
<xsl:if test="macro">
<xsl:call-template name="synopsis">
<xsl:with-param name="text">
<xsl:apply-templates mode="synopsis" select="macro">
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<xsl:with-param name="text">
<xsl:apply-templates mode="synopsis"
select="namespace|class|struct|union
|function|free-function-group
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|typedef">
<xsl:with-param name="indentation" select="0"/>
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</xsl:with-param>
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<xsl:apply-templates mode="namespace-reference"/>
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</xsl:template>
<xsl:template match="header" mode="generate.id">
<xsl:text>header.</xsl:text>
<xsl:value-of select="translate(@name, '/.', '._')"/>
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<xsl:template name="monospaced">
<xsl:param name="text"/>
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<!-- Linking -->
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<xsl:copy>
<xsl:copy-of select="@*"/>
<xsl:attribute name="url">
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<xsl:when test="starts-with(@url, 'boost:/')">
<xsl:value-of select="concat($boost.protocol.text, substring-after(@url, 'boost:'))"/>
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<xsl:when test="starts-with(@url, 'boost:')">
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<xsl:param name="to"/>
<xsl:param name="text"/>
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<link linkend="{$to}">
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<xsl:call-template name="source-highlight">
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<xsl:if test="not($highlight)">
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<xsl:param name="to"/>
<xsl:param name="text"/>
<xsl:param name="highlight" select="false()"/>
<anchor id="{$to}"/>
<xsl:if test="$highlight">
<xsl:call-template name="source-highlight">
<xsl:with-param name="text" select="$text"/>
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<xsl:if test="not($highlight)">
<xsl:value-of select="$text"/>
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<xsl:param name="to"/>
<xsl:param name="text"/>
<!-- True if we should create an anchor, otherwise we will create
a link. If you require more control (e.g., with the possibility of
having no link or anchor), set link-type instead: if present, it
takes precedence. -->
<xsl:param name="is-anchor"/>
<!-- 'anchor', 'link', or 'none' -->
<xsl:param name="link-type">
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<xsl:when test="$is-anchor">
<xsl:text>anchor</xsl:text>
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<xsl:otherwise>
<xsl:text>link</xsl:text>
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</xsl:param>
<xsl:param name="highlight" select="false()"/>
<xsl:choose>
<xsl:when test="$link-type='anchor'">
<xsl:call-template name="anchor">
<xsl:with-param name="to" select="$to"/>
<xsl:with-param name="text" select="$text"/>
<xsl:with-param name="highlight" select="$highlight"/>
</xsl:call-template>
</xsl:when>
<xsl:when test="$link-type='link'">
<xsl:call-template name="internal-link">
<xsl:with-param name="to" select="$to"/>
<xsl:with-param name="text" select="$text"/>
<xsl:with-param name="highlight" select="$highlight"/>
</xsl:call-template>
</xsl:when>
<xsl:when test="$link-type='none'">
<xsl:if test="$highlight">
<xsl:call-template name="source-highlight">
<xsl:with-param name="text" select="$text"/>
</xsl:call-template>
</xsl:if>
<xsl:if test="not($highlight)">
<xsl:value-of select="$text"/>
</xsl:if>
</xsl:when>
<xsl:otherwise>
<xsl:message>
Error: XSL template 'link-or-anchor' called with invalid link-type '<xsl:value-of select="$link-type"/>'
</xsl:message>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
<xsl:template name="separator"/>
<xsl:template name="reference-documentation">
<xsl:param name="name"/>
<xsl:param name="refname"/>
<xsl:param name="purpose"/>
<xsl:param name="anchor"/>
<xsl:param name="synopsis"/>
<xsl:param name="text"/>
<refentry id="{$anchor}">
<refmeta>
<refentrytitle><xsl:value-of select="$name"/></refentrytitle>
<manvolnum>3</manvolnum>
</refmeta>
<refnamediv>
<refname><xsl:value-of select="$refname"/></refname>
<refpurpose>
<xsl:apply-templates mode="purpose" select="$purpose"/>
</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>
<xsl:copy-of select="$synopsis"/>
</synopsis>
</refsynopsisdiv>
<xsl:if test="not(string($text)='')">
<refsect1>
<title>Description</title>
<xsl:copy-of select="$text"/>
</refsect1>
</xsl:if>
</refentry>
</xsl:template>
<xsl:template name="member-documentation">
<xsl:param name="name"/>
<xsl:param name="text"/>
<refsect2>
<title><xsl:copy-of select="$name"/></title>
<xsl:copy-of select="$text"/>
</refsect2>
</xsl:template>
<xsl:template name="preformatted">
<xsl:param name="text"/>
<literallayout class="monospaced">
<xsl:copy-of select="$text"/>
</literallayout>
</xsl:template>
<xsl:template name="synopsis">
<xsl:param name="text"/>
<synopsis>
<xsl:copy-of select="$text"/>
</synopsis>
</xsl:template>
<!-- Fallthrough for DocBook elements -->
<xsl:template match="*">
<xsl:element name="{name(.)}">
<xsl:for-each select="./@*">
<xsl:choose>
<xsl:when test="local-name(.)='last-revision'">
<xsl:attribute
name="rev:last-revision"
namespace="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision">
<xsl:value-of select="."/>
</xsl:attribute>
</xsl:when>
<xsl:otherwise>
<xsl:attribute name="{name(.)}">
<xsl:value-of select="."/>
</xsl:attribute>
</xsl:otherwise>
</xsl:choose>
</xsl:for-each>
<xsl:apply-templates/>
</xsl:element>
</xsl:template>
<xsl:template match="processing-instruction()">
<xsl:copy/>
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<xsl:template match="code">
<computeroutput>
<xsl:apply-templates mode="annotation"/>
</computeroutput>
</xsl:template>
<xsl:template match="code[@language='jam']">
<computeroutput>
<xsl:apply-templates mode="highlight-jam"/>
</computeroutput>
</xsl:template>
<xsl:template match="bold">
<emphasis role="bold">
<xsl:apply-templates mode="annotation"/>
</emphasis>
</xsl:template>
<xsl:template match="library">
<xsl:if test="not(@html-only = 1) and
($boost.include.libraries='' or
contains($boost.include.libraries, @id))">
<chapter>
<xsl:copy-of select="@*[not(contains(' last-revision name dirname html-only url ', concat(' ',local-name(),' ')))]"/>
<xsl:if test="not(@id)">
<xsl:attribute name="id">
<xsl:call-template name="generate.id"/>
</xsl:attribute>
</xsl:if>
<xsl:if test="@last-revision">
<xsl:attribute
name="rev:last-revision"
namespace="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision">
<xsl:value-of select="@last-revision"/>
</xsl:attribute>
</xsl:if>
<xsl:apply-templates/>
</chapter>
</xsl:if>
</xsl:template>
<xsl:template match="chapter">
<xsl:if test="$boost.include.libraries=''">
<chapter>
<xsl:copy-of select="./@*" />
<xsl:apply-templates/>
</chapter>
</xsl:if>
</xsl:template>
<xsl:template match="boostbook">
<book>
<xsl:copy-of select="@*[not(contains(' last-revision name dirname html-only url ', concat(' ',local-name(),' ')))]"/>
<xsl:apply-templates/>
</book>
</xsl:template>
<xsl:template match="programlisting">
<programlisting><xsl:apply-templates/></programlisting>
</xsl:template>
<xsl:template match="programlisting[@language='jam']">
<programlisting>
<xsl:apply-templates mode="highlight-jam"/>
</programlisting>
</xsl:template>
<!-- These DocBook elements have special meaning. Use the annotation mode -->
<xsl:template match="classname|methodname|functionname|enumname|
macroname|headername|globalname">
<computeroutput>
<xsl:apply-templates select="." mode="annotation"/>
</computeroutput>
</xsl:template>
<xsl:template match="libraryname|conceptname">
<xsl:apply-templates select="." mode="annotation"/>
</xsl:template>
<xsl:template match="description">
<xsl:apply-templates mode="annotation"/>
</xsl:template>
<!-- Swallow using-namespace and using-class directives along with
last-revised elements -->
<xsl:template match="using-namespace|using-class|last-revised"/>
<!-- If there is no "namespace-reference" mode, forward to
"reference" mode -->
<xsl:template match="*" mode="namespace-reference">
<xsl:apply-templates select="." mode="reference"/>
</xsl:template>
<!-- Make the various blocks immediately below a "part" be
"chapter"-s. Must also take into account turning
chapters within chpaters into sections. -->
<xsl:template match="part/part|part/article">
<chapter>
<xsl:copy-of select="./@*"/>
<xsl:apply-templates/>
</chapter>
</xsl:template>
<xsl:template match="part/part/partinfo|part/article/articleinfo">
<chapterinfo><xsl:apply-templates/></chapterinfo>
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<xsl:template match="part/part/chapter|part/part/appendix">
<section>
<xsl:copy-of select="./@*"/>
<xsl:apply-templates/>
</section>
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<xsl:template match="part/part/chapter/chapterinfo|part/part/appendix/appendixinfo">
<sectioninfo><xsl:apply-templates/></sectioninfo>
</xsl:template>
<!-- Header link comment to be inserted at the start of a reference page's
synopsis -->
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<xsl:if test="ancestor::header">
<xsl:call-template name="highlight-comment">
<xsl:with-param name="text">
<xsl:text>// In header: <</xsl:text>
<xsl:call-template name="internal-link">
<xsl:with-param name="to">
<xsl:call-template name="generate.id">
<xsl:with-param name="node" select="ancestor::header[1]"/>
</xsl:call-template>
</xsl:with-param>
<xsl:with-param name="text" select="ancestor::header[1]/@name" />
</xsl:call-template>
<xsl:text>> </xsl:text>
</xsl:with-param>
</xsl:call-template>
</xsl:if>
</xsl:template>
</xsl:stylesheet>
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