includes/SpecialUnusedimages.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7 /**
   8  * implements Special:Unusedimages
   9  * @ingroup SpecialPage
  10  */
  11 class UnusedimagesPage extends ImageQueryPage {
  12
  13         function isExpensive() { return true; }
  14
  15         function getName() {
  16                 return 'Unusedimages';
  17         }
  18
  19         function sortDescending() {
  20                 return false;
  21         }
  22         function isSyndicated() { return false; }
  23
  24         function getSQL() {
  25                 global $wgCountCategorizedImagesAsUsed;
  26                 $dbr = wfGetDB( DB_SLAVE );
  27
  28                 if ( $wgCountCategorizedImagesAsUsed ) {
  29                         list( $page, $image, $imagelinks, $categorylinks ) = $dbr->tableNamesN( 'page', 'image', 'imagelinks', 'categorylinks' );
  30
  31                         return "SELECT 'Unusedimages' as type, 6 as namespace, img_name as title, img_timestamp as value,
  32                                                 img_user, img_user_text,  img_description
  33                                         FROM ((($page AS I LEFT JOIN $categorylinks AS L ON I.page_id = L.cl_from)
  34                                                 LEFT JOIN $imagelinks AS P ON I.page_title = P.il_to)
  35                                                 INNER JOIN $image AS G ON I.page_title = G.img_name)
  36                                         WHERE I.page_namespace = ".NS_IMAGE." AND L.cl_from IS NULL AND P.il_to IS NULL";
  37                 } else {
  38                         list( $image, $imagelinks ) = $dbr->tableNamesN( 'image','imagelinks' );
  39
  40                         return "SELECT 'Unusedimages' as type, 6 as namespace, img_name as title, img_timestamp as value,
  41                                 img_user, img_user_text,  img_description
  42                                 FROM $image LEFT JOIN $imagelinks ON img_name=il_to WHERE il_to IS NULL ";
  43                 }
  44         }
  45
  46         function getPageHeader() {
  47                 return wfMsgExt( 'unusedimagestext', array( 'parse') );
  48         }
  49
  50 }
  51
  52 /**
  53  * Entry point
  54  */
  55 function wfSpecialUnusedimages() {
  56         list( $limit, $offset ) = wfCheckLimits();
  57         $uip = new UnusedimagesPage();
  58
  59         return $uip->doQuery( $offset, $limit );
  60 }