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| 1 | <?php |
| 2 | /** |
| 3 | * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com" |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License along |
| 16 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 18 | * http://www.gnu.org/copyleft/gpl.html |
| 19 | * |
| 20 | * @file |
| 21 | */ |
| 22 | |
| 23 | use MediaWiki\Title\Title; |
| 24 | use Wikimedia\ParamValidator\ParamValidator; |
| 25 | use Wikimedia\ParamValidator\TypeDef\IntegerDef; |
| 26 | |
| 27 | /** |
| 28 | * This query adds an "<images>" subelement to all pages with the list of |
| 29 | * images embedded into those pages. |
| 30 | * |
| 31 | * @ingroup API |
| 32 | */ |
| 33 | class ApiQueryImages extends ApiQueryGeneratorBase { |
| 34 | |
| 35 | /** |
| 36 | * @param ApiQuery $query |
| 37 | * @param string $moduleName |
| 38 | */ |
| 39 | public function __construct( ApiQuery $query, $moduleName ) { |
| 40 | parent::__construct( $query, $moduleName, 'im' ); |
| 41 | } |
| 42 | |
| 43 | public function execute() { |
| 44 | $this->run(); |
| 45 | } |
| 46 | |
| 47 | public function executeGenerator( $resultPageSet ) { |
| 48 | $this->run( $resultPageSet ); |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * @param ApiPageSet|null $resultPageSet |
| 53 | */ |
| 54 | private function run( $resultPageSet = null ) { |
| 55 | $pages = $this->getPageSet()->getGoodPages(); |
| 56 | if ( $pages === [] ) { |
| 57 | return; // nothing to do |
| 58 | } |
| 59 | |
| 60 | $params = $this->extractRequestParams(); |
| 61 | $this->addFields( [ |
| 62 | 'il_from', |
| 63 | 'il_to' |
| 64 | ] ); |
| 65 | |
| 66 | $this->addTables( 'imagelinks' ); |
| 67 | $this->addWhereFld( 'il_from', array_keys( $pages ) ); |
| 68 | if ( $params['continue'] !== null ) { |
| 69 | $db = $this->getDB(); |
| 70 | $cont = $this->parseContinueParamOrDie( $params['continue'], [ 'int', 'string' ] ); |
| 71 | $op = $params['dir'] == 'descending' ? '<=' : '>='; |
| 72 | $this->addWhere( $db->buildComparison( $op, [ |
| 73 | 'il_from' => $cont[0], |
| 74 | 'il_to' => $cont[1], |
| 75 | ] ) ); |
| 76 | } |
| 77 | |
| 78 | $sort = ( $params['dir'] == 'descending' ? ' DESC' : '' ); |
| 79 | // Don't order by il_from if it's constant in the WHERE clause |
| 80 | if ( count( $pages ) === 1 ) { |
| 81 | $this->addOption( 'ORDER BY', 'il_to' . $sort ); |
| 82 | } else { |
| 83 | $this->addOption( 'ORDER BY', [ |
| 84 | 'il_from' . $sort, |
| 85 | 'il_to' . $sort |
| 86 | ] ); |
| 87 | } |
| 88 | $this->addOption( 'LIMIT', $params['limit'] + 1 ); |
| 89 | |
| 90 | if ( $params['images'] ) { |
| 91 | $images = []; |
| 92 | foreach ( $params['images'] as $img ) { |
| 93 | $title = Title::newFromText( $img ); |
| 94 | if ( !$title || $title->getNamespace() !== NS_FILE ) { |
| 95 | $this->addWarning( [ 'apiwarn-notfile', wfEscapeWikiText( $img ) ] ); |
| 96 | } else { |
| 97 | $images[] = $title->getDBkey(); |
| 98 | } |
| 99 | } |
| 100 | if ( !$images ) { |
| 101 | // No titles so no results |
| 102 | return; |
| 103 | } |
| 104 | $this->addWhereFld( 'il_to', $images ); |
| 105 | } |
| 106 | |
| 107 | $res = $this->select( __METHOD__ ); |
| 108 | |
| 109 | if ( $resultPageSet === null ) { |
| 110 | $count = 0; |
| 111 | foreach ( $res as $row ) { |
| 112 | if ( ++$count > $params['limit'] ) { |
| 113 | // We've reached the one extra which shows that |
| 114 | // there are additional pages to be had. Stop here... |
| 115 | $this->setContinueEnumParameter( 'continue', $row->il_from . '|' . $row->il_to ); |
| 116 | break; |
| 117 | } |
| 118 | $vals = []; |
| 119 | ApiQueryBase::addTitleInfo( $vals, Title::makeTitle( NS_FILE, $row->il_to ) ); |
| 120 | $fit = $this->addPageSubItem( $row->il_from, $vals ); |
| 121 | if ( !$fit ) { |
| 122 | $this->setContinueEnumParameter( 'continue', $row->il_from . '|' . $row->il_to ); |
| 123 | break; |
| 124 | } |
| 125 | } |
| 126 | } else { |
| 127 | $titles = []; |
| 128 | $count = 0; |
| 129 | foreach ( $res as $row ) { |
| 130 | if ( ++$count > $params['limit'] ) { |
| 131 | // We've reached the one extra which shows that |
| 132 | // there are additional pages to be had. Stop here... |
| 133 | $this->setContinueEnumParameter( 'continue', $row->il_from . '|' . $row->il_to ); |
| 134 | break; |
| 135 | } |
| 136 | $titles[] = Title::makeTitle( NS_FILE, $row->il_to ); |
| 137 | } |
| 138 | $resultPageSet->populateFromTitles( $titles ); |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | public function getCacheMode( $params ) { |
| 143 | return 'public'; |
| 144 | } |
| 145 | |
| 146 | public function getAllowedParams() { |
| 147 | return [ |
| 148 | 'limit' => [ |
| 149 | ParamValidator::PARAM_DEFAULT => 10, |
| 150 | ParamValidator::PARAM_TYPE => 'limit', |
| 151 | IntegerDef::PARAM_MIN => 1, |
| 152 | IntegerDef::PARAM_MAX => ApiBase::LIMIT_BIG1, |
| 153 | IntegerDef::PARAM_MAX2 => ApiBase::LIMIT_BIG2 |
| 154 | ], |
| 155 | 'continue' => [ |
| 156 | ApiBase::PARAM_HELP_MSG => 'api-help-param-continue', |
| 157 | ], |
| 158 | 'images' => [ |
| 159 | ParamValidator::PARAM_ISMULTI => true, |
| 160 | ], |
| 161 | 'dir' => [ |
| 162 | ParamValidator::PARAM_DEFAULT => 'ascending', |
| 163 | ParamValidator::PARAM_TYPE => [ |
| 164 | 'ascending', |
| 165 | 'descending' |
| 166 | ] |
| 167 | ], |
| 168 | ]; |
| 169 | } |
| 170 | |
| 171 | protected function getExamplesMessages() { |
| 172 | $title = Title::newMainPage()->getPrefixedText(); |
| 173 | $mp = rawurlencode( $title ); |
| 174 | |
| 175 | return [ |
| 176 | "action=query&prop=images&titles={$mp}" |
| 177 | => 'apihelp-query+images-example-simple', |
| 178 | "action=query&generator=images&titles={$mp}&prop=info" |
| 179 | => 'apihelp-query+images-example-generator', |
| 180 | ]; |
| 181 | } |
| 182 | |
| 183 | public function getHelpUrls() { |
| 184 | return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Images'; |
| 185 | } |
| 186 | } |