includes/SpecialMissingFiles.php

   1 <?php
   2 /**
   3  * A querypage to list the missing files - implements Special:Missingfiles
   4  *
   5  * @addtogroup SpecialPage
   6  *
   7  * @author Matěj Grabovský <65s.mg@atlas.cz>
   8  * @copyright Copyright © 2008, Matěj Grabovský
   9  * @license http://www.gnu.org/copyleft/gpl.html GNU General Public License 2.0 or later
  10  */
  11 class MissingFilesPage extends QueryPage {
  12         function getName() {
  13                 return 'Missingfiles';
  14         }
  15
  16         function isExpensive() {
  17                 return true;
  18         }
  19
  20         function isSyndicated() {
  21                 return false;
  22         }
  23
  24         function getSQL() {
  25                 $dbr = wfGetDB( DB_SLAVE );
  26                 list( $imagelinks, $page ) = $dbr->tableNamesN( 'imagelinks', 'page' );
  27                 $name = $dbr->addQuotes( $this->getName() );
  28
  29                 return "SELECT $name as type,
  30                          " . NS_IMAGE . " as namespace,
  31                          il_to as title,
  32                          COUNT(*) as value
  33                          FROM $imagelinks
  34                          LEFT JOIN $page ON il_to = page_title AND page_namespace = ". NS_IMAGE ."
  35                          WHERE page_title IS NULL
  36                          GROUP BY 1,2,3
  37                 ";
  38         }
  39
  40         function sortDescending() {
  41                 return true;
  42         }
  43
  44         /**
  45          * Fetch user page links and cache their existence
  46          */
  47         function preprocessResults( $db, $res ) {
  48                 $batch = new LinkBatch;
  49
  50                 while ( $row = $db->fetchObject( $res ) )
  51                         $batch->addObj( Title::makeTitleSafe( $row->namespace, $row->title ) );
  52
  53                 $batch->execute();
  54
  55                 // Back to start for display
  56                 if ( $db->numRows( $res ) > 0 )
  57
  58                 // If there are no rows we get an error seeking.
  59                 $db->dataSeek( $res, 0 );
  60         }
  61
  62         public function formatResult( $skin, $result ) {
  63                 global $wgLang, $wgContLang;
  64
  65                 $nt = Title::makeTitle( $result->namespace, $result->title );
  66                 $text = $wgContLang->convert( $nt->getText() );
  67
  68                 $plink = $this->isCached()
  69                         ? '<s>' . $skin->makeLinkObj( $nt, htmlspecialchars( $text ) ) . '</s>'
  70                         : $skin->makeBrokenImageLinkObj( $nt, htmlspecialchars( $text ) );
  71
  72                 $label = wfMsgExt( 'nlinks', array( 'parsemag', 'escape' ), $wgLang->formatNum( $result->value ) );
  73                 $nlinks = $skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Whatlinkshere' ), $label, 'target=' . $nt->getPrefixedUrl() );
  74                 return wfSpecialList( $plink, $nlinks );
  75         }
  76 }
  77
  78 /**
  79  * Constructor
  80  */
  81 function wfSpecialMissingFiles() {
  82         list( $limit, $offset ) = wfCheckLimits();
  83
  84         $wpp = new MissingFilesPage();
  85
  86         $wpp->doQuery( $offset, $limit );
  87 }