4 * Created on Mar 16, 2008
6 * API for MediaWiki 1.12+
8 * Copyright © 2008 Vasiliev Victor vasilvv@gmail.com,
9 * based on ApiQueryAllpages.php
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License along
22 * with this program; if not, write to the Free Software Foundation, Inc.,
23 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 * http://www.gnu.org/copyleft/gpl.html
27 if ( !defined( 'MEDIAWIKI' ) ) {
28 // Eclipse helper - will be ignored in production
29 require_once( 'ApiQueryBase.php' );
33 * Query module to enumerate all available pages.
37 class ApiQueryAllimages
extends ApiQueryGeneratorBase
{
39 public function __construct( $query, $moduleName ) {
40 parent
::__construct( $query, $moduleName, 'ai' );
41 $this->mRepo
= RepoGroup
::singleton()->getLocalRepo();
45 * Overide parent method to make sure to make sure the repo's DB is used
46 * which may not necesarilly be the same as the local DB.
48 * TODO: allow querying non-local repos.
50 protected function getDB() {
51 return $this->mRepo
->getSlaveDB();
54 public function execute() {
58 public function executeGenerator( $resultPageSet ) {
59 if ( $resultPageSet->isResolvingRedirects() ) {
60 $this->dieUsage( 'Use "gaifilterredir=nonredirects" option instead of "redirects" when using allimages as a generator', 'params' );
63 $this->run( $resultPageSet );
66 private function run( $resultPageSet = null ) {
68 if ( !$repo instanceof LocalRepo
) {
69 $this->dieUsage( 'Local file repository does not support querying all images', 'unsupportedrepo' );
74 $params = $this->extractRequestParams();
77 $dir = ( $params['dir'] == 'descending' ?
'older' : 'newer' );
78 $from = ( is_null( $params['from'] ) ?
null : $this->titlePartToKey( $params['from'] ) );
79 $this->addWhereRange( 'img_name', $dir, $from, null );
80 if ( isset( $params['prefix'] ) )
81 $this->addWhere( 'img_name' . $db->buildLike( $this->titlePartToKey( $params['prefix'] ), $db->anyString() ) );
83 if ( isset( $params['minsize'] ) ) {
84 $this->addWhere( 'img_size>=' . intval( $params['minsize'] ) );
87 if ( isset( $params['maxsize'] ) ) {
88 $this->addWhere( 'img_size<=' . intval( $params['maxsize'] ) );
92 if ( isset( $params['sha1'] ) ) {
93 $sha1 = wfBaseConvert( $params['sha1'], 16, 36, 31 );
94 } elseif ( isset( $params['sha1base36'] ) ) {
95 $sha1 = $params['sha1base36'];
98 $this->addWhere( 'img_sha1=' . $db->addQuotes( $sha1 ) );
101 $this->addTables( 'image' );
103 $prop = array_flip( $params['prop'] );
104 $this->addFields( LocalFile
::selectFields() );
106 $limit = $params['limit'];
107 $this->addOption( 'LIMIT', $limit +
1 );
108 $this->addOption( 'ORDER BY', 'img_name' .
109 ( $params['dir'] == 'descending' ?
' DESC' : '' ) );
111 $res = $this->select( __METHOD__
);
115 $result = $this->getResult();
116 while ( $row = $db->fetchObject( $res ) ) {
117 if ( ++
$count > $limit ) {
118 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
119 // TODO: Security issue - if the user has no right to view next title, it will still be shown
120 $this->setContinueEnumParameter( 'from', $this->keyToTitle( $row->img_name
) );
124 if ( is_null( $resultPageSet ) ) {
125 $file = $repo->newFileFromRow( $row );
126 $info = array_merge( array( 'name' => $row->img_name
),
127 ApiQueryImageInfo
::getInfo( $file, $prop, $result ) );
128 $fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $info );
130 $this->setContinueEnumParameter( 'from', $this->keyToTitle( $row->img_name
) );
134 $titles[] = Title
::makeTitle( NS_IMAGE
, $row->img_name
);
137 $db->freeResult( $res );
139 if ( is_null( $resultPageSet ) ) {
140 $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'img' );
142 $resultPageSet->populateFromTitles( $titles );
146 public function getAllowedParams() {
151 ApiBase
::PARAM_TYPE
=> 'integer',
154 ApiBase
::PARAM_TYPE
=> 'integer',
157 ApiBase
::PARAM_DFLT
=> 10,
158 ApiBase
::PARAM_TYPE
=> 'limit',
159 ApiBase
::PARAM_MIN
=> 1,
160 ApiBase
::PARAM_MAX
=> ApiBase
::LIMIT_BIG1
,
161 ApiBase
::PARAM_MAX2
=> ApiBase
::LIMIT_BIG2
164 ApiBase
::PARAM_DFLT
=> 'ascending',
165 ApiBase
::PARAM_TYPE
=> array(
171 'sha1base36' => null,
173 ApiBase
::PARAM_TYPE
=> ApiQueryImageInfo
::getPropertyNames(),
174 ApiBase
::PARAM_DFLT
=> 'timestamp|url',
175 ApiBase
::PARAM_ISMULTI
=> true
180 public function getParamDescription() {
182 'from' => 'The image title to start enumerating from',
183 'prefix' => 'Search for all image titles that begin with this value',
184 'dir' => 'The direction in which to list',
185 'minsize' => 'Limit to images with at least this many bytes',
186 'maxsize' => 'Limit to images with at most this many bytes',
187 'limit' => 'How many images in total to return',
188 'sha1' => "SHA1 hash of image. Overrides {$this->getModulePrefix()}sha1base36",
189 'sha1base36' => 'SHA1 hash of image in base 36 (used in MediaWiki)',
190 'prop' => 'Which properties to get',
194 public function getDescription() {
195 return 'Enumerate all images sequentially';
198 public function getPossibleErrors() {
199 return array_merge( parent
::getPossibleErrors(), array(
200 array( 'code' => 'params', 'info' => 'Use "gaifilterredir=nonredirects" option instead of "redirects" when using allimages as a generator' ),
201 array( 'code' => 'unsupportedrepo', 'info' => 'Local file repository does not support querying all images' ),
205 protected function getExamples() {
208 ' Show a list of images starting at the letter "B"',
209 ' api.php?action=query&list=allimages&aifrom=B',
210 'Using as Generator',
211 ' Show info about 4 images starting at the letter "T"',
212 ' api.php?action=query&generator=allimages&gailimit=4&gaifrom=T&prop=imageinfo',
216 public function getVersion() {
217 return __CLASS__
. ': $Id$';