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| 1 | <?php |
| 2 | /** |
| 3 | * Copyright © 2006 Rob Church |
| 4 | * |
| 5 | * @license GPL-2.0-or-later |
| 6 | * @file |
| 7 | */ |
| 8 | |
| 9 | namespace MediaWiki\Specials; |
| 10 | |
| 11 | use MediaWiki\Html\Html; |
| 12 | use MediaWiki\Page\LinkBatchFactory; |
| 13 | use MediaWiki\Page\RedirectLookup; |
| 14 | use MediaWiki\Page\WikiPageFactory; |
| 15 | use MediaWiki\Skin\Skin; |
| 16 | use MediaWiki\SpecialPage\QueryPage; |
| 17 | use MediaWiki\Title\Title; |
| 18 | use stdClass; |
| 19 | use Wikimedia\Rdbms\IConnectionProvider; |
| 20 | use Wikimedia\Rdbms\IReadableDatabase; |
| 21 | use Wikimedia\Rdbms\IResultWrapper; |
| 22 | |
| 23 | /** |
| 24 | * Lists all the redirecting pages on the wiki. |
| 25 | * |
| 26 | * @ingroup SpecialPage |
| 27 | * @author Rob Church <robchur@gmail.com> |
| 28 | */ |
| 29 | class SpecialListRedirects extends QueryPage { |
| 30 | |
| 31 | public function __construct( |
| 32 | private readonly LinkBatchFactory $linkBatchFactory, |
| 33 | IConnectionProvider $dbProvider, |
| 34 | private readonly WikiPageFactory $wikiPageFactory, |
| 35 | private readonly RedirectLookup $redirectLookup, |
| 36 | ) { |
| 37 | parent::__construct( 'Listredirects' ); |
| 38 | $this->setDatabaseProvider( $dbProvider ); |
| 39 | } |
| 40 | |
| 41 | /** @inheritDoc */ |
| 42 | public function isExpensive() { |
| 43 | return true; |
| 44 | } |
| 45 | |
| 46 | /** @inheritDoc */ |
| 47 | public function isSyndicated() { |
| 48 | return false; |
| 49 | } |
| 50 | |
| 51 | /** @inheritDoc */ |
| 52 | protected function sortDescending() { |
| 53 | return false; |
| 54 | } |
| 55 | |
| 56 | /** @inheritDoc */ |
| 57 | public function getQueryInfo() { |
| 58 | return [ |
| 59 | 'tables' => [ 'page', 'redirect' ], |
| 60 | 'fields' => [ 'namespace' => 'page_namespace', |
| 61 | 'title' => 'page_title', |
| 62 | 'rd_namespace', |
| 63 | 'rd_title', |
| 64 | 'rd_fragment', |
| 65 | 'rd_interwiki', |
| 66 | ], |
| 67 | 'conds' => [ 'page_is_redirect' => 1 ], |
| 68 | 'join_conds' => [ 'redirect' => [ |
| 69 | 'LEFT JOIN', 'rd_from=page_id' ], |
| 70 | ] |
| 71 | ]; |
| 72 | } |
| 73 | |
| 74 | /** @inheritDoc */ |
| 75 | protected function getOrderFields() { |
| 76 | return [ 'page_namespace', 'page_title' ]; |
| 77 | } |
| 78 | |
| 79 | /** |
| 80 | * Cache page existence for performance |
| 81 | * |
| 82 | * @param IReadableDatabase $db |
| 83 | * @param IResultWrapper $res |
| 84 | */ |
| 85 | public function preprocessResults( $db, $res ) { |
| 86 | if ( !$res->numRows() ) { |
| 87 | return; |
| 88 | } |
| 89 | |
| 90 | $batch = $this->linkBatchFactory->newLinkBatch()->setCaller( __METHOD__ ); |
| 91 | foreach ( $res as $row ) { |
| 92 | $batch->add( $row->namespace, $row->title ); |
| 93 | $redirTarget = $this->getRedirectTarget( $row ); |
| 94 | if ( $redirTarget ) { |
| 95 | $batch->addObj( $redirTarget ); |
| 96 | } |
| 97 | } |
| 98 | $batch->execute(); |
| 99 | |
| 100 | // Back to start for display |
| 101 | $res->seek( 0 ); |
| 102 | } |
| 103 | |
| 104 | protected function getRedirectTarget( stdClass $row ): ?Title { |
| 105 | if ( isset( $row->rd_title ) ) { |
| 106 | return Title::makeTitle( |
| 107 | $row->rd_namespace, |
| 108 | $row->rd_title, |
| 109 | $row->rd_fragment, |
| 110 | $row->rd_interwiki |
| 111 | ); |
| 112 | } else { |
| 113 | $title = Title::makeTitle( $row->namespace, $row->title ); |
| 114 | if ( !$title->canExist() ) { |
| 115 | return null; |
| 116 | } |
| 117 | |
| 118 | return Title::castFromLinkTarget( |
| 119 | $this->redirectLookup->getRedirectTarget( $title ) |
| 120 | ); |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | /** |
| 125 | * @param Skin $skin |
| 126 | * @param stdClass $result Result row |
| 127 | * @return string |
| 128 | */ |
| 129 | public function formatResult( $skin, $result ) { |
| 130 | $linkRenderer = $this->getLinkRenderer(); |
| 131 | # Make a link to the redirect itself |
| 132 | $rd_title = Title::makeTitle( $result->namespace, $result->title ); |
| 133 | $rd_link = $linkRenderer->makeLink( |
| 134 | $rd_title, |
| 135 | null, |
| 136 | [], |
| 137 | [ 'redirect' => 'no' ] |
| 138 | ); |
| 139 | |
| 140 | # Find out where the redirect leads |
| 141 | $target = $this->getRedirectTarget( $result ); |
| 142 | if ( $target ) { |
| 143 | # Make a link to the destination page |
| 144 | $lang = $this->getLanguage(); |
| 145 | $arr = $lang->getArrow(); |
| 146 | $rd_link = Html::rawElement( 'bdi', [ 'dir' => $lang->getDir() ], $rd_link ); |
| 147 | $targetLink = $linkRenderer->makeLink( $target, $target->getFullText() ); |
| 148 | $targetLink = Html::rawElement( 'bdi', [ 'dir' => $lang->getDir() ], $targetLink ); |
| 149 | |
| 150 | return "$rd_link $arr $targetLink"; |
| 151 | } else { |
| 152 | return "<del>$rd_link</del>"; |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | /** @inheritDoc */ |
| 157 | public function execute( $par ) { |
| 158 | $this->addHelpLink( 'Help:Redirects' ); |
| 159 | parent::execute( $par ); |
| 160 | } |
| 161 | |
| 162 | /** @inheritDoc */ |
| 163 | protected function getGroupName() { |
| 164 | return 'pages'; |
| 165 | } |
| 166 | } |
| 167 | |
| 168 | /** @deprecated class alias since 1.41 */ |
| 169 | class_alias( SpecialListRedirects::class, 'SpecialListRedirects' ); |