includes/api/ApiQueryAllimages.php

   1 <?php
   2
   3 /*
   4  * Created on Mar 16, 2008
   5  *
   6  * API for MediaWiki 1.12+
   7  *
   8  * Copyright (C) 2008 Vasiliev Victor vasilvv@gmail.com,
   9  * based on ApiQueryAllpages.php
  10  *
  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.
  15  *
  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.
  20  *
  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
  25  */
  26
  27 if (!defined('MEDIAWIKI')) {
  28         // Eclipse helper - will be ignored in production
  29         require_once ('ApiQueryBase.php');
  30 }
  31
  32 /**
  33  * Query module to enumerate all available pages.
  34  *
  35  * @addtogroup API
  36  */
  37 class ApiQueryAllimages extends ApiQueryGeneratorBase {
  38
  39         public function __construct($query, $moduleName) {
  40                 parent :: __construct($query, $moduleName, 'ai');
  41         }
  42
  43         public function execute() {
  44                 $this->run();
  45         }
  46
  47         public function executeGenerator($resultPageSet) {
  48                 if ($resultPageSet->isResolvingRedirects())
  49                         $this->dieUsage('Use "gaifilterredir=nonredirects" option instead of "redirects" when using allimages as a generator', 'params');
  50
  51                 $this->run($resultPageSet);
  52         }
  53
  54         private function run($resultPageSet = null) {
  55                 $repo = RepoGroup::singleton()->getLocalRepo();
  56                 if ( !is_a( $repo, 'LocalRepo' ) )
  57                         $this->dieUsage('Local file repository does not support querying all images', 'unsupportedrepo');
  58
  59                 $db = $this->getDB();
  60
  61                 $params = $this->extractRequestParams();
  62
  63                 // Image filters
  64                 if (!is_null($params['from']))
  65                         $this->addWhere('img_name>=' . $db->addQuotes(ApiQueryBase :: titleToKey($params['from'])));
  66                 if (isset ($params['prefix']))
  67                         $this->addWhere("img_name LIKE '" . $db->escapeLike(ApiQueryBase :: titleToKey($params['prefix'])) . "%'");
  68
  69                 if (isset ($params['minsize'])) {
  70                         $this->addWhere('img_size>=' . intval($params['minsize']));
  71                 }
  72
  73                 if (isset ($params['maxsize'])) {
  74                         $this->addWhere('img_size<=' . intval($params['maxsize']));
  75                 }
  76
  77                 $sha1 = false;
  78                 if( isset( $params['sha1'] ) ) {
  79                         $sha1 = wfBaseConvert( $params['sha1'], 16, 36, 31 );
  80                 } elseif( isset( $params['sha1base36'] ) ) {
  81                         $sha1 = $params['sha1base36'];
  82                 }
  83                 if( $sha1 ) {
  84                         $this->addWhere( 'img_sha1=' . $db->addQuotes( $sha1 ) );
  85                 }
  86
  87                 $this->addTables('image');
  88
  89                 $prop = array_flip($params['prop']);
  90                 $this->addFields( LocalFile::selectFields() );
  91
  92                 $limit = $params['limit'];
  93                 $this->addOption('LIMIT', $limit+1);
  94                 $this->addOption('ORDER BY', 'img_name' .
  95                                                 ($params['dir'] == 'descending' ? ' DESC' : ''));
  96
  97                 $res = $this->select(__METHOD__);
  98
  99                 $data = array ();
 100                 $count = 0;
 101                 while ($row = $db->fetchObject($res)) {
 102                         if (++ $count > $limit) {
 103                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 104                                 // TODO: Security issue - if the user has no right to view next title, it will still be shown
 105                                 $this->setContinueEnumParameter('from', ApiQueryBase :: keyToTitle($row->img_name));
 106                                 break;
 107                         }
 108
 109                         if (is_null($resultPageSet)) {
 110                                 $file = $repo->newFileFromRow( $row );
 111                                 $item['name'] = $row->img_name;
 112                                 if(isset($prop['size']))
 113                                         $item['size'] = $file->getSize();
 114                                 if(isset($prop['dimensions']))
 115                                 {
 116                                         $item['width'] = $file->getWidth();
 117                                         $item['height'] = $file->getHeight();
 118                                 }
 119                                 if(isset($prop['mime']))
 120                                         $item['mime'] = $file->getMimeType();
 121                                 if(isset($prop['sha1']))
 122                                         $item['sha1'] = wfBaseConvert($file->getSha1(), 36, 16, 31);
 123                                 if(isset($prop['timestamp']))
 124                                         $item['timestamp'] = wfTimestamp(TS_ISO_8601, $file->getTimestamp());
 125                                 if(isset($prop['url']))
 126                                         $item['url'] = $file->getFullUrl();
 127                                 $data[] = $item;
 128                         } else {
 129                                 $data[] = Title::makeTitle( NS_IMAGE, $row->img_name );
 130                         }
 131                 }
 132                 $db->freeResult($res);
 133
 134                 if (is_null($resultPageSet)) {
 135                         $result = $this->getResult();
 136                         $result->setIndexedTagName($data, 'img');
 137                         $result->addValue('query', $this->getModuleName(), $data);
 138                 } else {
 139                         $resultPageSet->populateFromTitles( $data );
 140                 }
 141         }
 142
 143         public function getAllowedParams() {
 144                 return array (
 145                         'from' => null,
 146                         'prefix' => null,
 147                         'minsize' => array (
 148                                 ApiBase :: PARAM_TYPE => 'integer',
 149                         ),
 150                         'maxsize' => array (
 151                                 ApiBase :: PARAM_TYPE => 'integer',
 152                         ),
 153                         'limit' => array (
 154                                 ApiBase :: PARAM_DFLT => 10,
 155                                 ApiBase :: PARAM_TYPE => 'limit',
 156                                 ApiBase :: PARAM_MIN => 1,
 157                                 ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
 158                                 ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
 159                         ),
 160                         'dir' => array (
 161                                 ApiBase :: PARAM_DFLT => 'ascending',
 162                                 ApiBase :: PARAM_TYPE => array (
 163                                         'ascending',
 164                                         'descending'
 165                                 )
 166                         ),
 167                         'sha1' => null,
 168                         'sha1base36' => null,
 169                         'prop' => array (
 170                                 ApiBase :: PARAM_TYPE => array(
 171                                         'timestamp',
 172                                         'url',
 173                                         'size',
 174                                         'dimensions',
 175                                         'mime',
 176                                         'sha1'
 177                                 ),
 178                                 ApiBase :: PARAM_DFLT => 'timestamp|url',
 179                                 ApiBase :: PARAM_ISMULTI => true
 180                         )
 181                 );
 182         }
 183
 184         public function getParamDescription() {
 185                 return array (
 186                         'from' => 'The image title to start enumerating from.',
 187                         'prefix' => 'Search for all image titles that begin with this value.',
 188                         'dir' => 'The direction in which to list',
 189                         'minsize' => 'Limit to images with at least this many bytes',
 190                         'maxsize' => 'Limit to images with at most this many bytes',
 191                         'limit' => 'How many total pages to return.',
 192                         'sha1' => 'SHA1 hash of image',
 193                         'sha1base36' => 'SHA1 hash of image in base 36 (used in MediaWiki)',
 194                         'prop' => 'Which properties to get',
 195                 );
 196         }
 197
 198         public function getDescription() {
 199                 return 'Enumerate all images sequentially';
 200         }
 201
 202         protected function getExamples() {
 203                 return array (
 204                         'Simple Use',
 205                         ' Show a list of images starting at the letter "B"',
 206                         '  api.php?action=query&list=allimages&aifrom=B',
 207                         'Using as Generator',
 208                         ' Show info about 4 images starting at the letter "T"',
 209                         '  api.php?action=query&generator=allimages&gailimit=4&gaifrom=T&prop=imageinfo',
 210                 );
 211         }
 212
 213         public function getVersion() {
 214                 return __CLASS__ . ': $Id$';
 215         }
 216 }