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
|
<?php
/**
* API for MediaWiki 1.17+
*
* Created on May 14, 2011
*
* Copyright © 2011 Sam Reed
* Copyright © 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
/**
* This gives links pointing to the given interwiki
* @ingroup API
*/
class ApiQueryLangBacklinks extends ApiQueryGeneratorBase {
public function __construct( $query, $moduleName ) {
parent::__construct( $query, $moduleName, 'lbl' );
}
public function execute() {
$this->run();
}
public function executeGenerator( $resultPageSet ) {
$this->run( $resultPageSet );
}
/**
* @param $resultPageSet ApiPageSet
* @return void
*/
public function run( $resultPageSet = null ) {
$params = $this->extractRequestParams();
if ( isset( $params['title'] ) && !isset( $params['lang'] ) ) {
$this->dieUsageMsg( array( 'missingparam', 'lang' ) );
}
if ( !is_null( $params['continue'] ) ) {
$cont = explode( '|', $params['continue'] );
if ( count( $cont ) != 3 ) {
$this->dieUsage( 'Invalid continue param. You should pass the ' .
'original value returned by the previous query', '_badcontinue' );
}
$prefix = $this->getDB()->strencode( $cont[0] );
$title = $this->getDB()->strencode( $this->titleToKey( $cont[1] ) );
$from = intval( $cont[2] );
$this->addWhere(
"ll_lang > '$prefix' OR " .
"(ll_lang = '$prefix' AND " .
"(ll_title > '$title' OR " .
"(ll_title = '$title' AND " .
"ll_from >= $from)))"
);
}
$prop = array_flip( $params['prop'] );
$lllang = isset( $prop['lllang'] );
$lltitle = isset( $prop['lltitle'] );
$this->addTables( array( 'langlinks', 'page' ) );
$this->addWhere( 'll_from = page_id' );
$this->addFields( array( 'page_id', 'page_title', 'page_namespace', 'page_is_redirect',
'll_from', 'll_lang', 'll_title' ) );
if ( isset( $params['lang'] ) ) {
$this->addWhereFld( 'll_lang', $params['lang'] );
if ( isset( $params['title'] ) ) {
$this->addWhereFld( 'll_title', $params['title'] );
$this->addOption( 'ORDER BY', 'll_from' );
} else {
$this->addOption( 'ORDER BY', 'll_title, ll_from' );
}
} else {
$this->addOption( 'ORDER BY', 'll_lang, ll_title, ll_from' );
}
$this->addOption( 'LIMIT', $params['limit'] + 1 );
$res = $this->select( __METHOD__ );
$pages = array();
$count = 0;
$result = $this->getResult();
foreach ( $res as $row ) {
if ( ++ $count > $params['limit'] ) {
// We've reached the one extra which shows that there are additional pages to be had. Stop here...
// Continue string preserved in case the redirect query doesn't pass the limit
$this->setContinueEnumParameter( 'continue', "{$row->ll_lang}|{$row->ll_title}|{$row->ll_from}" );
break;
}
if ( !is_null( $resultPageSet ) ) {
$pages[] = Title::newFromRow( $row );
} else {
$entry = array( 'pageid' => $row->page_id );
$title = Title::makeTitle( $row->page_namespace, $row->page_title );
ApiQueryBase::addTitleInfo( $entry, $title );
if ( $row->page_is_redirect ) {
$entry['redirect'] = '';
}
if ( $lllang ) {
$entry['lllang'] = $row->ll_lang;
}
if ( $lltitle ) {
$entry['lltitle'] = $row->ll_title;
}
$fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $entry );
if ( !$fit ) {
$this->setContinueEnumParameter( 'continue', "{$row->ll_lang}|{$row->ll_title}|{$row->ll_from}" );
break;
}
}
}
if ( is_null( $resultPageSet ) ) {
$result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'll' );
} else {
$resultPageSet->populateFromTitles( $pages );
}
}
public function getCacheMode( $params ) {
return 'public';
}
public function getAllowedParams() {
return array(
'lang' => null,
'title' => null,
'continue' => null,
'limit' => array(
ApiBase::PARAM_DFLT => 10,
ApiBase::PARAM_TYPE => 'limit',
ApiBase::PARAM_MIN => 1,
ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
),
'prop' => array(
ApiBase::PARAM_ISMULTI => true,
ApiBase::PARAM_DFLT => '',
ApiBase::PARAM_TYPE => array(
'lllang',
'lltitle',
),
),
);
}
public function getParamDescription() {
return array(
'lang' => 'Language for the language link',
'title' => "Language link to search for. Must be used with {$this->getModulePrefix()}lang",
'continue' => 'When more results are available, use this to continue',
'prop' => array(
'Which properties to get',
' lllang - Adds the language code of the language link',
' lltitle - Adds the title of the language ink',
),
'limit' => 'How many total pages to return',
);
}
public function getDescription() {
return array( 'Find all pages that link to the given language link.',
'Can be used to find all links with a language code, or',
'all links to a title (with a given language).',
'Using neither parameter is effectively "All Language Links"',
);
}
public function getPossibleErrors() {
return array_merge( parent::getPossibleErrors(), array(
array( 'missingparam', 'lang' ),
array( 'code' => '_badcontinue', 'info' => 'Invalid continue param. You should pass the original value returned by the previous query' ),
) );
}
public function getExamples() {
return array(
'api.php?action=query&list=langbacklinks&lbltitle=Test&lbllang=fr',
'api.php?action=query&generator=langbacklinks&glbltitle=Test&lbllang=fr&prop=info'
);
}
public function getVersion() {
return __CLASS__ . ': $Id$';
}
}
|
