source: clfs-embedded/BOOK/stylesheets/lfs-xsl/docbook-xsl-snapshot/common/utility.xsl@ 2cfff80

Last change on this file since 2cfff80 was 9642843, checked in by Manuel Canales Esparcia <manuel@…>, 17 years ago

Updated DocBook-XSL code to version 1.73.2
  • Property mode set to 100644
File size: 11.9 KB
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[9882b55]1<?xml version='1.0'?>
2<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
3 xmlns:doc="http://nwalsh.com/xsl/documentation/1.0"
4 xmlns:dyn="http://exslt.org/dynamic"
5 xmlns:saxon="http://icl.com/saxon"
[00b1e11]6 xmlns:xlink="http://www.w3.org/1999/xlink"
[9882b55]7 exclude-result-prefixes="doc dyn saxon"
8 version='1.0'>
9
10<!-- ********************************************************************
11 $Id$
12 ********************************************************************
13
14 This file is part of the XSL DocBook Stylesheet distribution.
15 See ../README or http://docbook.sf.net/release/xsl/current/ for
16 copyright and other information.
17
18 ******************************************************************** -->
[00b1e11]19<doc:reference xmlns="" xml:id="utility">
20 <info>
21 <title>Common » Utility Template Reference</title>
22 <releaseinfo role="meta">
23 $Id$
24 </releaseinfo>
25 </info>
26 <!-- * yes, partintro is a valid child of a reference... -->
27 <partintro xml:id="partintro">
28 <title>Introduction</title>
29 <para>This is technical reference documentation for the
30 miscellaneous utility templates in the DocBook XSL
31 Stylesheets.</para>
32 <note>
33 <para>These templates are defined in a separate file from the set
[9642843]34 of “common” templates because some of the common templates
[00b1e11]35 reference DocBook XSL stylesheet parameters, requiring the
36 entire set of parameters to be imported/included in any
37 stylesheet that imports/includes the common templates.</para>
38 <para>The utility templates don’t import or include any DocBook
39 XSL stylesheet parameters, so the utility templates can be used
40 without importing the whole set of parameters.</para>
41 </note>
42 <para>This is not intended to be user documentation. It is
43 provided for developers writing customization layers for the
44 stylesheets.</para>
45 </partintro>
[9882b55]46</doc:reference>
47
48<!-- ====================================================================== -->
49
50<doc:template name="log.message" xmlns="">
51 <refpurpose>Logs/emits formatted notes and warnings</refpurpose>
52
53 <refdescription id="log.message-desc">
54 <para>The <function>log.message</function> template is a utility
55 template for logging/emitting formatted messages&#xa0;– that is,
56 notes and warnings, along with a given log “level” and an
57 identifier for the “source” that the message relates to.</para>
58 </refdescription>
59
60 <refparameter id="log.message-params">
61 <variablelist>
[00b1e11]62 <varlistentry><term>level</term>
[9882b55]63 <listitem>
64 <para>Text to log/emit in the message-level field to
65 indicate the message level
66 (<literal>Note</literal> or
67 <literal>Warning</literal>)</para>
68 </listitem>
69 </varlistentry>
[00b1e11]70 <varlistentry><term>source</term>
[9882b55]71 <listitem>
72 <para>Text to log/emit in the source field to identify the
73 “source” to which the notification/warning relates.
74 This can be any arbitrary string, but because the
75 message lacks line and column numbers to identify the
76 exact part of the source document to which it
77 relates, the intention is that the value you pass
78 into the <literal>source</literal> parameter should
79 give the user some way to identify the portion of
80 their source document on which to take potentially
81 take action in response to the log message (for
82 example, to edit, change, or add content).</para>
83 <para>So the <literal>source</literal> value should be,
84 for example, an ID, book/chapter/article title, title
85 of some formal object, or even a string giving an
86 XPath expression.</para>
87 </listitem>
88 </varlistentry>
[00b1e11]89 <varlistentry><term>context-desc</term>
[9882b55]90 <listitem>
91 <para>Text to log/emit in the context-description field to
92 describe the context for the message.</para>
93 </listitem>
94 </varlistentry>
[00b1e11]95 <varlistentry><term>context-desc-field-length</term>
[9882b55]96 <listitem>
97 <para>Specifies length of the context-description field
98 (in characters); default is 12</para>
99 <para>If the text specified by the
100 <literal>context-desc</literal> parameter is longer
101 than the number of characters specified in
102 <literal>context-desc-field-length</literal>, it is
103 truncated to <literal>context-desc-field-length</literal>
104 (12 characters by default).</para>
105 <para>If the specified text is shorter than
106 <literal>context-desc-field-length</literal>,
107 it is right-padded out to
108 <literal>context-desc-field-length</literal> (12 by
109 default).</para>
110 <para>If no value has been specified for the
111 <literal>context-desc</literal> parameter, the field is
112 left empty and the text of the log message begins with
113 the value of the <literal>message</literal>
114 parameter.</para>
115 </listitem>
116 </varlistentry>
[00b1e11]117 <varlistentry><term>message</term>
[9882b55]118 <listitem>
119 <para>Text to log/emit in the actual message field</para>
120 </listitem>
121 </varlistentry>
[00b1e11]122 <varlistentry><term>message-field-length</term>
[9882b55]123 <listitem>
124 <para>Specifies length of the message
125 field (in characters); default is 45</para>
126 </listitem>
127 </varlistentry>
128 </variablelist>
129 </refparameter>
130 <refreturn id="log.message-returns">
131 <para>Outputs a message (generally, to standard error).</para></refreturn>
132</doc:template>
133<xsl:template name="log.message">
134 <xsl:param name="level"/>
135 <xsl:param name="source"/>
136 <xsl:param name="context-desc"/>
137 <xsl:param name="context-desc-field-length">12</xsl:param>
138 <xsl:param name="context-desc-padded">
139 <xsl:if test="not($context-desc = '')">
140 <xsl:call-template name="pad-string">
141 <xsl:with-param name="leftRight">right</xsl:with-param>
142 <xsl:with-param name="padVar"
143 select="substring($context-desc, 1, $context-desc-field-length)"/>
144 <xsl:with-param name="length" select="$context-desc-field-length"/>
145 </xsl:call-template>
146 </xsl:if>
147 </xsl:param>
148 <xsl:param name="message"/>
149 <xsl:param name="message-field-length" select="45"/>
150 <xsl:param name="message-padded">
151 <xsl:variable name="spaces-for-blank-level">
152 <!-- * if the level field is blank, we'll need to pad out -->
153 <!-- * the message field with spaces to compensate -->
154 <xsl:choose>
155 <xsl:when test="$level = ''">
156 <xsl:value-of select="4 + 2"/>
157 <!-- * 4 = hard-coded length of comment text ("Note" or "Warn") -->
158 <!-- * + 2 = length of colon-plus-space separator ": " -->
159 </xsl:when>
160 <xsl:otherwise>
161 <xsl:value-of select="0"/>
162 </xsl:otherwise>
163 </xsl:choose>
164 </xsl:variable>
165 <xsl:variable name="spaces-for-blank-context-desc">
166 <!-- * if the context-description field is blank, we'll need -->
167 <!-- * to pad out the message field with spaces to compensate -->
168 <xsl:choose>
169 <xsl:when test="$context-desc = ''">
170 <xsl:value-of select="$context-desc-field-length + 2"/>
171 <!-- * + 2 = length of colon-plus-space separator ": " -->
172 </xsl:when>
173 <xsl:otherwise>
174 <xsl:value-of select="0"/>
175 </xsl:otherwise>
176 </xsl:choose>
177 </xsl:variable>
178 <xsl:variable name="extra-spaces"
179 select="$spaces-for-blank-level + $spaces-for-blank-context-desc"/>
180 <xsl:call-template name="pad-string">
181 <xsl:with-param name="leftRight">right</xsl:with-param>
182 <xsl:with-param name="padVar"
183 select="substring($message, 1, ($message-field-length + $extra-spaces))"/>
184 <xsl:with-param name="length"
185 select="$message-field-length + $extra-spaces"/>
186 </xsl:call-template>
187 </xsl:param>
188 <!-- * emit the actual log message -->
189 <xsl:message>
190 <xsl:if test="not($level = '')">
191 <xsl:value-of select="$level"/>
192 <xsl:text>: </xsl:text>
193 </xsl:if>
194 <xsl:if test="not($context-desc = '')">
195 <xsl:value-of select="$context-desc-padded"/>
196 <xsl:text>: </xsl:text>
197 </xsl:if>
198 <xsl:value-of select="$message-padded"/>
199 <xsl:text> </xsl:text>
200 <xsl:value-of select="$source"/>
201 </xsl:message>
202</xsl:template>
203
204<!-- ===================================== -->
205<doc:template name="get.doc.title" xmlns="">
206 <refpurpose>Gets a title from the current document</refpurpose>
207 <refdescription id="get.doc.title-desc">
208 <para>The <function>get.doc.title</function> template is a
209 utility template for returning the first title found in the
210 current document.</para>
211 </refdescription>
212 <refreturn id="get.doc.title-returns">
213 <para>Returns a string containing some identifying title for the
214 current document .</para></refreturn>
215</doc:template>
216<xsl:template name="get.doc.title">
217 <xsl:choose>
218 <xsl:when test="//*[local-name() = 'title'
219 or local-name() = 'refname']">
220 <xsl:value-of select="//*[local-name() = 'title'
221 or local-name() = 'refname'][1]"/>
222 </xsl:when>
223 <xsl:when test="substring(local-name(*[1]),
224 string-length(local-name(*[1])-3) = 'info')
225 and *[1]/*[local-name() = 'title']">
226 <xsl:value-of select="*[1]/*[local-name() = 'title'][1]"/>
227 </xsl:when>
228 </xsl:choose>
229</xsl:template>
230
231<!-- ===================================== -->
232<doc:template name="pad-string" xmlns="">
233 <refpurpose>Right-pads or left-pads a string out to a certain length</refpurpose>
234 <refdescription id="pad-string-desc">
235 <para>This function takes string <parameter>padVar</parameter> and
236 pads it out in the direction <parameter>rightLeft</parameter> to
237 the string-length <parameter>length</parameter>, using string
238 <parameter>padChar</parameter> (a space character by default) as
239 the padding string (note that <parameter>padChar</parameter> can
240 be a string; it is not limited to just being a single
241 character).</para>
242 <note>
243 <para>This function began as a copy of Nate Austin's
[00b1e11]244 <function>prepend-pad</function> function in the <link
245 xlink:href="http://www.dpawson.co.uk/xsl/sect2/padding.html" >Padding
246 Content</link> section of Dave Pawson's <link
247 xlink:href="http://www.dpawson.co.uk/xsl/index.html" >XSLT
248 FAQ</link>.</para>
[9882b55]249 </note>
250 </refdescription>
251 <refreturn id="pad-string-returns">
252 <para>Returns a (padded) string.</para></refreturn>
253</doc:template>
254<xsl:template name="pad-string">
255 <!-- * recursive template to right/left pad the value with -->
256 <!-- * whatever padChar is passed in -->
257 <xsl:param name="padChar" select="' '"/>
258 <xsl:param name="leftRight">left</xsl:param>
259 <xsl:param name="padVar"/>
260 <xsl:param name="length"/>
261 <xsl:choose>
262 <xsl:when test="string-length($padVar) &lt; $length">
263 <xsl:call-template name="pad-string">
264 <xsl:with-param name="padChar" select="$padChar"/>
265 <xsl:with-param name="leftRight" select="$leftRight"/>
266 <xsl:with-param name="padVar">
267 <xsl:choose>
268 <!-- * determine whether string should be -->
269 <!-- * right- or left-padded -->
270 <xsl:when test="$leftRight = 'left'">
271 <!-- * pad it to left -->
272 <xsl:value-of select="concat($padChar,$padVar)"/>
273 </xsl:when>
274 <xsl:otherwise>
275 <!-- * otherwise, right-pad the string -->
276 <xsl:value-of select="concat($padVar,$padChar)"/>
277 </xsl:otherwise>
278 </xsl:choose>
279 </xsl:with-param>
280 <xsl:with-param name="length" select="$length"/>
281 </xsl:call-template>
282 </xsl:when>
283 <xsl:otherwise>
284 <xsl:value-of
285 select="substring($padVar,string-length($padVar) - $length + 1)"/>
286 </xsl:otherwise>
287 </xsl:choose>
288</xsl:template>
289
290</xsl:stylesheet>
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