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authorChris Wilson <chris+github@qwirx.com>2009-04-26 20:01:15 +0000
committerChris Wilson <chris+github@qwirx.com>2009-04-26 20:01:15 +0000
commit1afab29eadf8e0d8b724b2894b3c644ea102fb51 (patch)
tree576fa12d5d4e9de77418ea2feb54bbe3f2c06ca0 /docs/xsl-generic/common/utility.xsl
parent07bf983525ce56d754a9360dfadfa19aa7aac12c (diff)
Add a local copy of the XSL stylesheets needed to build Box Backup docs,
as remote copies are slow and prone to failure and weird behaviour with different versions of xsltproc (e.g. on Cygwin).
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+<?xml version='1.0'?>
+<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+ xmlns:doc="http://nwalsh.com/xsl/documentation/1.0"
+ xmlns:dyn="http://exslt.org/dynamic"
+ xmlns:saxon="http://icl.com/saxon"
+ xmlns:xlink="http://www.w3.org/1999/xlink"
+ exclude-result-prefixes="doc dyn saxon"
+ version='1.0'>
+
+<!-- ********************************************************************
+ $Id: utility.xsl 7101 2007-07-20 15:32:12Z xmldoc $
+ ********************************************************************
+
+ This file is part of the XSL DocBook Stylesheet distribution.
+ See ../README or http://docbook.sf.net/release/xsl/current/ for
+ copyright and other information.
+
+ ******************************************************************** -->
+<doc:reference xmlns="" xml:id="utility">
+ <info>
+ <title>Common » Utility Template Reference</title>
+ <releaseinfo role="meta">
+ $Id: utility.xsl 7101 2007-07-20 15:32:12Z xmldoc $
+ </releaseinfo>
+ </info>
+ <!-- * yes, partintro is a valid child of a reference... -->
+ <partintro xml:id="partintro">
+ <title>Introduction</title>
+ <para>This is technical reference documentation for the
+ miscellaneous utility templates in the DocBook XSL
+ Stylesheets.</para>
+ <note>
+ <para>These templates are defined in a separate file from the set
+ of “common” templates because some of the common templates
+ reference DocBook XSL stylesheet parameters, requiring the
+ entire set of parameters to be imported/included in any
+ stylesheet that imports/includes the common templates.</para>
+ <para>The utility templates don’t import or include any DocBook
+ XSL stylesheet parameters, so the utility templates can be used
+ without importing the whole set of parameters.</para>
+ </note>
+ <para>This is not intended to be user documentation. It is
+ provided for developers writing customization layers for the
+ stylesheets.</para>
+ </partintro>
+</doc:reference>
+
+<!-- ====================================================================== -->
+
+<doc:template name="log.message" xmlns="">
+ <refpurpose>Logs/emits formatted notes and warnings</refpurpose>
+
+ <refdescription id="log.message-desc">
+ <para>The <function>log.message</function> template is a utility
+ template for logging/emitting formatted messages&#xa0;– that is,
+ notes and warnings, along with a given log “level” and an
+ identifier for the “source” that the message relates to.</para>
+ </refdescription>
+
+ <refparameter id="log.message-params">
+ <variablelist>
+ <varlistentry><term>level</term>
+ <listitem>
+ <para>Text to log/emit in the message-level field to
+ indicate the message level
+ (<literal>Note</literal> or
+ <literal>Warning</literal>)</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry><term>source</term>
+ <listitem>
+ <para>Text to log/emit in the source field to identify the
+ “source” to which the notification/warning relates.
+ This can be any arbitrary string, but because the
+ message lacks line and column numbers to identify the
+ exact part of the source document to which it
+ relates, the intention is that the value you pass
+ into the <literal>source</literal> parameter should
+ give the user some way to identify the portion of
+ their source document on which to take potentially
+ take action in response to the log message (for
+ example, to edit, change, or add content).</para>
+ <para>So the <literal>source</literal> value should be,
+ for example, an ID, book/chapter/article title, title
+ of some formal object, or even a string giving an
+ XPath expression.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry><term>context-desc</term>
+ <listitem>
+ <para>Text to log/emit in the context-description field to
+ describe the context for the message.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry><term>context-desc-field-length</term>
+ <listitem>
+ <para>Specifies length of the context-description field
+ (in characters); default is 12</para>
+ <para>If the text specified by the
+ <literal>context-desc</literal> parameter is longer
+ than the number of characters specified in
+ <literal>context-desc-field-length</literal>, it is
+ truncated to <literal>context-desc-field-length</literal>
+ (12 characters by default).</para>
+ <para>If the specified text is shorter than
+ <literal>context-desc-field-length</literal>,
+ it is right-padded out to
+ <literal>context-desc-field-length</literal> (12 by
+ default).</para>
+ <para>If no value has been specified for the
+ <literal>context-desc</literal> parameter, the field is
+ left empty and the text of the log message begins with
+ the value of the <literal>message</literal>
+ parameter.</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry><term>message</term>
+ <listitem>
+ <para>Text to log/emit in the actual message field</para>
+ </listitem>
+ </varlistentry>
+ <varlistentry><term>message-field-length</term>
+ <listitem>
+ <para>Specifies length of the message
+ field (in characters); default is 45</para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refparameter>
+ <refreturn id="log.message-returns">
+ <para>Outputs a message (generally, to standard error).</para></refreturn>
+</doc:template>
+<xsl:template name="log.message">
+ <xsl:param name="level"/>
+ <xsl:param name="source"/>
+ <xsl:param name="context-desc"/>
+ <xsl:param name="context-desc-field-length">12</xsl:param>
+ <xsl:param name="context-desc-padded">
+ <xsl:if test="not($context-desc = '')">
+ <xsl:call-template name="pad-string">
+ <xsl:with-param name="leftRight">right</xsl:with-param>
+ <xsl:with-param name="padVar"
+ select="substring($context-desc, 1, $context-desc-field-length)"/>
+ <xsl:with-param name="length" select="$context-desc-field-length"/>
+ </xsl:call-template>
+ </xsl:if>
+ </xsl:param>
+ <xsl:param name="message"/>
+ <xsl:param name="message-field-length" select="45"/>
+ <xsl:param name="message-padded">
+ <xsl:variable name="spaces-for-blank-level">
+ <!-- * if the level field is blank, we'll need to pad out -->
+ <!-- * the message field with spaces to compensate -->
+ <xsl:choose>
+ <xsl:when test="$level = ''">
+ <xsl:value-of select="4 + 2"/>
+ <!-- * 4 = hard-coded length of comment text ("Note" or "Warn") -->
+ <!-- * + 2 = length of colon-plus-space separator ": " -->
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:value-of select="0"/>
+ </xsl:otherwise>
+ </xsl:choose>
+ </xsl:variable>
+ <xsl:variable name="spaces-for-blank-context-desc">
+ <!-- * if the context-description field is blank, we'll need -->
+ <!-- * to pad out the message field with spaces to compensate -->
+ <xsl:choose>
+ <xsl:when test="$context-desc = ''">
+ <xsl:value-of select="$context-desc-field-length + 2"/>
+ <!-- * + 2 = length of colon-plus-space separator ": " -->
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:value-of select="0"/>
+ </xsl:otherwise>
+ </xsl:choose>
+ </xsl:variable>
+ <xsl:variable name="extra-spaces"
+ select="$spaces-for-blank-level + $spaces-for-blank-context-desc"/>
+ <xsl:call-template name="pad-string">
+ <xsl:with-param name="leftRight">right</xsl:with-param>
+ <xsl:with-param name="padVar"
+ select="substring($message, 1, ($message-field-length + $extra-spaces))"/>
+ <xsl:with-param name="length"
+ select="$message-field-length + $extra-spaces"/>
+ </xsl:call-template>
+ </xsl:param>
+ <!-- * emit the actual log message -->
+ <xsl:message>
+ <xsl:if test="not($level = '')">
+ <xsl:value-of select="$level"/>
+ <xsl:text>: </xsl:text>
+ </xsl:if>
+ <xsl:if test="not($context-desc = '')">
+ <xsl:value-of select="$context-desc-padded"/>
+ <xsl:text>: </xsl:text>
+ </xsl:if>
+ <xsl:value-of select="$message-padded"/>
+ <xsl:text> </xsl:text>
+ <xsl:value-of select="$source"/>
+ </xsl:message>
+</xsl:template>
+
+<!-- ===================================== -->
+<doc:template name="get.doc.title" xmlns="">
+ <refpurpose>Gets a title from the current document</refpurpose>
+ <refdescription id="get.doc.title-desc">
+ <para>The <function>get.doc.title</function> template is a
+ utility template for returning the first title found in the
+ current document.</para>
+ </refdescription>
+ <refreturn id="get.doc.title-returns">
+ <para>Returns a string containing some identifying title for the
+ current document .</para></refreturn>
+</doc:template>
+<xsl:template name="get.doc.title">
+ <xsl:choose>
+ <xsl:when test="//*[local-name() = 'title'
+ or local-name() = 'refname']">
+ <xsl:value-of select="//*[local-name() = 'title'
+ or local-name() = 'refname'][1]"/>
+ </xsl:when>
+ <xsl:when test="substring(local-name(*[1]),
+ string-length(local-name(*[1])-3) = 'info')
+ and *[1]/*[local-name() = 'title']">
+ <xsl:value-of select="*[1]/*[local-name() = 'title'][1]"/>
+ </xsl:when>
+ </xsl:choose>
+</xsl:template>
+
+<!-- ===================================== -->
+<doc:template name="pad-string" xmlns="">
+ <refpurpose>Right-pads or left-pads a string out to a certain length</refpurpose>
+ <refdescription id="pad-string-desc">
+ <para>This function takes string <parameter>padVar</parameter> and
+ pads it out in the direction <parameter>rightLeft</parameter> to
+ the string-length <parameter>length</parameter>, using string
+ <parameter>padChar</parameter> (a space character by default) as
+ the padding string (note that <parameter>padChar</parameter> can
+ be a string; it is not limited to just being a single
+ character).</para>
+ <note>
+ <para>This function began as a copy of Nate Austin's
+ <function>prepend-pad</function> function in the <link
+ xlink:href="http://www.dpawson.co.uk/xsl/sect2/padding.html" >Padding
+ Content</link> section of Dave Pawson's <link
+ xlink:href="http://www.dpawson.co.uk/xsl/index.html" >XSLT
+ FAQ</link>.</para>
+ </note>
+ </refdescription>
+ <refreturn id="pad-string-returns">
+ <para>Returns a (padded) string.</para></refreturn>
+</doc:template>
+<xsl:template name="pad-string">
+ <!-- * recursive template to right/left pad the value with -->
+ <!-- * whatever padChar is passed in -->
+ <xsl:param name="padChar" select="' '"/>
+ <xsl:param name="leftRight">left</xsl:param>
+ <xsl:param name="padVar"/>
+ <xsl:param name="length"/>
+ <xsl:choose>
+ <xsl:when test="string-length($padVar) &lt; $length">
+ <xsl:call-template name="pad-string">
+ <xsl:with-param name="padChar" select="$padChar"/>
+ <xsl:with-param name="leftRight" select="$leftRight"/>
+ <xsl:with-param name="padVar">
+ <xsl:choose>
+ <!-- * determine whether string should be -->
+ <!-- * right- or left-padded -->
+ <xsl:when test="$leftRight = 'left'">
+ <!-- * pad it to left -->
+ <xsl:value-of select="concat($padChar,$padVar)"/>
+ </xsl:when>
+ <xsl:otherwise>
+ <!-- * otherwise, right-pad the string -->
+ <xsl:value-of select="concat($padVar,$padChar)"/>
+ </xsl:otherwise>
+ </xsl:choose>
+ </xsl:with-param>
+ <xsl:with-param name="length" select="$length"/>
+ </xsl:call-template>
+ </xsl:when>
+ <xsl:otherwise>
+ <xsl:value-of
+ select="substring($padVar,string-length($padVar) - $length + 1)"/>
+ </xsl:otherwise>
+ </xsl:choose>
+</xsl:template>
+
+</xsl:stylesheet>