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
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Low-level generator for XML
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Output
* @package StatusNet
* @author Evan Prodromou <evan@controlyourself.ca>
* @author Sarven Capadisli <csarven@controlyourself.ca>
* @copyright 2008 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('LACONICA')) {
exit(1);
}
/**
* Low-level generator for XML
*
* This is a thin wrapper around PHP's XMLWriter. The main
* advantage is the element() method, which simplifies outputting
* an element.
*
* @category Output
* @package StatusNet
* @author Evan Prodromou <evan@controlyourself.ca>
* @author Sarven Capadisli <csarven@controlyourself.ca>
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
* @see Action
* @see HTMLOutputter
*/
class XMLOutputter
{
/**
* Wrapped XMLWriter object, which does most of the heavy lifting
* for output.
*/
var $xw = null;
/**
* Constructor
*
* Initializes the wrapped XMLWriter.
*
* @param string $output URL for outputting, defaults to stdout
* @param boolean $indent Whether to indent output, default true
*/
function __construct($output='php://output', $indent=true)
{
$this->xw = new XMLWriter();
$this->xw->openURI($output);
$this->xw->setIndent($indent);
}
/**
* Start a new XML document
*
* @param string $doc document element
* @param string $public public identifier
* @param string $system system identifier
*
* @return void
*/
function startXML($doc=null, $public=null, $system=null)
{
$this->xw->startDocument('1.0', 'UTF-8');
if ($doc) {
$this->xw->writeDTD($doc, $public, $system);
}
}
/**
* finish an XML document
*
* It's probably a bad idea to continue to use this object
* after calling endXML().
*
* @return void
*/
function endXML()
{
$this->xw->endDocument();
$this->xw->flush();
}
/**
* output an XML element
*
* Utility for outputting an XML element. A convenient wrapper
* for a bunch of longer XMLWriter calls. This is best for
* when an element doesn't have any sub-elements; if that's the
* case, use elementStart() and elementEnd() instead.
*
* The $content element will be escaped for XML. If you need
* raw output, use elementStart() and elementEnd() with a call
* to raw() in the middle.
*
* If $attrs is a string instead of an array, it will be treated
* as the class attribute of the element.
*
* @param string $tag Element type or tagname
* @param array $attrs Array of element attributes, as
* key-value pairs
* @param string $content string content of the element
*
* @return void
*/
function element($tag, $attrs=null, $content=null)
{
$this->elementStart($tag, $attrs);
if (!is_null($content)) {
$this->xw->text($content);
}
$this->elementEnd($tag);
}
/**
* output a start tag for an element
*
* Mostly used for when an element has content that's
* not a simple string.
*
* If $attrs is a string instead of an array, it will be treated
* as the class attribute of the element.
*
* @param string $tag Element type or tagname
* @param array $attrs Array of element attributes
*
* @return void
*/
function elementStart($tag, $attrs=null)
{
$this->xw->startElement($tag);
if (is_array($attrs)) {
foreach ($attrs as $name => $value) {
$this->xw->writeAttribute($name, $value);
}
} else if (is_string($attrs)) {
$this->xw->writeAttribute('class', $attrs);
}
}
/**
* output an end tag for an element
*
* Used in conjunction with elementStart(). $tag param
* should match the elementStart() param.
*
* For HTML 4 compatibility, this method will force
* a full end element (</tag>) even if the element is
* empty, except for a handful of exception tagnames.
* This is a hack.
*
* @param string $tag Element type or tagname.
*
* @return void
*/
function elementEnd($tag)
{
static $empty_tag = array('base', 'meta', 'link', 'hr',
'br', 'param', 'img', 'area',
'input', 'col');
// XXX: check namespace
if (in_array($tag, $empty_tag)) {
$this->xw->endElement();
} else {
$this->xw->fullEndElement();
}
}
/**
* output plain text
*
* Text will be escaped. If you need it not to be,
* use raw() instead.
*
* @param string $txt Text to output.
*
* @return void
*/
function text($txt)
{
$this->xw->text($txt);
}
/**
* output raw xml
*
* This will spit out its argument verbatim -- no escaping is
* done.
*
* @param string $xml XML to output.
*
* @return void
*/
function raw($xml)
{
$this->xw->writeRaw($xml);
}
/**
* output a comment
*
* @param string $txt text of the comment
*
* @return void
*/
function comment($txt)
{
$this->xw->writeComment($txt);
}
}
|
