1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<chapter xml:id="xsl.examples" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
&reftitle.examples;
<section xml:id="xsl.examples-collection">
<title>Example collection.xml and collection.xsl files</title>
<para>
Many examples in this reference require both an XML and an XSL file.
We will use <filename>collection.xml</filename> and
<filename>collection.xsl</filename> that contains the following:
</para>
<para>
<example>
<title>collection.xml</title>
<programlisting role="xml">
<![CDATA[
<collection>
<cd>
<title>Fight for your mind</title>
<artist>Ben Harper</artist>
<year>1995</year>
</cd>
<cd>
<title>Electric Ladyland</title>
<artist>Jimi Hendrix</artist>
<year>1997</year>
</cd>
</collection>
]]>
</programlisting>
</example>
<example>
<title>collection.xsl</title>
<programlisting role="xml">
<![CDATA[
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:param name="owner" select="'Nicolas Eliaszewicz'"/>
<xsl:output method="html" encoding="iso-8859-1" indent="no"/>
<xsl:template match="collection">
Hey! Welcome to <xsl:value-of select="$owner"/>'s sweet CD collection!
<xsl:apply-templates/>
</xsl:template>
<xsl:template match="cd">
<h1><xsl:value-of select="title"/></h1>
<h2>by <xsl:value-of select="artist"/> - <xsl:value-of select="year"/></h2>
<hr />
</xsl:template>
</xsl:stylesheet>
]]>
</programlisting>
</example>
</para>
</section>
<section xml:id="xsl.examples-errors">
<title>Error handling with libxml error handling functions</title>
<para>
libxml offers a number of functions for handling errors, which can be
employed to capture and deal with errors in XSLT processing.
</para>
<para>
<example>
<title>fruits.xml</title>
<para>A valid XML file.</para>
<programlisting role="xml">
<![CDATA[
<fruits>
<fruit>Apple</fruit>
<fruit>Banana</fruit>
<fruit>Cherry</fruit>
</fruits>
]]>
</programlisting>
</example>
<example>
<title>fruits.xsl</title>
<para>Contains an invalid select expression.</para>
<programlisting role="xml">
<![CDATA[
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html" encoding="utf-8" indent="no"/>
<xsl:template match="fruits">
<ul>
<xsl:apply-templates/>
</ul>
</xsl:template>
<xsl:template match="fruit">
<li><xsl:value-of select="THIS IS A DELIBERATE ERROR!"/></li>
</xsl:template>
</xsl:stylesheet>
]]>
</programlisting>
</example>
<example xml:id="xsl.examples-errors.capture">
<title>Collating and printing errors</title>
<para>
The example below captures and displays libxml errors raised when calling
<methodname>XSLTProcessor::importStyleSheet</methodname> with a
stylesheet containing an error.
</para>
<programlisting role="php">
<![CDATA[
<?php
$xmldoc = new DOMDocument();
$xsldoc = new DOMDocument();
$xsl = new XSLTProcessor();
$xmldoc->loadXML('fruits.xml');
$xsldoc->loadXML('fruits.xsl');
libxml_use_internal_errors(true);
$result = $xsl->importStyleSheet($xsldoc);
if (!$result) {
foreach (libxml_get_errors() as $error) {
echo "Libxml error: {$error->message}\n";
}
}
libxml_use_internal_errors(false);
if ($result) {
echo $xsl->transformToXML($xmldoc);
}
?>
]]>
</programlisting>
&example.outputs.similar;
<screen>
<![CDATA[
Libxml error: Invalid expression
Libxml error: compilation error: file fruits.xsl line 9 element value-of
Libxml error: xsl:value-of : could not compile select expression 'THIS IS A DELIBERATE ERROR!'
]]>
</screen>
</example>
</para>
</section>
</chapter>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
|
