includes/SpecialBrokenRedirects.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  * @subpackage SpecialPage
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once('QueryPage.php');
  12
  13 /**
  14  *
  15  * @package MediaWiki
  16  * @subpackage SpecialPage
  17  */
  18 class BrokenRedirectsPage extends PageQueryPage {
  19         var $targets = array();
  20
  21         function getName() {
  22                 return 'BrokenRedirects';
  23         }
  24
  25         function isExpensive( ) { return true; }
  26         function isSyndicated() { return false; }
  27
  28         function getPageHeader( ) {
  29                 return wfMsgWikiHtml('brokenredirectstext')."<br />\n";
  30         }
  31
  32         function getSQL() {
  33                 $dbr =& wfGetDB( DB_SLAVE );
  34                 extract( $dbr->tableNames( 'page', 'pagelinks' ) );
  35
  36                 $sql = "SELECT 'BrokenRedirects'  AS type,
  37                                 p1.page_namespace AS namespace,
  38                                 p1.page_title     AS title,
  39                                 pl_namespace,
  40                                 pl_title
  41                            FROM $pagelinks AS pl
  42                    JOIN $page p1 ON (p1.page_is_redirect=1 AND pl.pl_from=p1.page_id)
  43                       LEFT JOIN $page AS p2 ON (pl_namespace=p2.page_namespace AND pl_title=p2.page_title
  44                                 AND p2.page_namespace IS NULL)";
  45                 return $sql;
  46         }
  47
  48         function getOrder() {
  49                 return '';
  50         }
  51
  52         function formatResult( $skin, $result ) {
  53                 $fromObj = Title::makeTitle( $result->namespace, $result->title );
  54                 if ( isset( $result->pl_title ) ) {
  55                         $toObj = Title::makeTitle( $result->pl_namespace, $result->pl_title );
  56                 } else {
  57                         $blinks = $fromObj->getBrokenLinksFrom();
  58                         if ( $blinks ) {
  59                                 $toObj = $blinks[0];
  60                         } else {
  61                                 $toObj = false;
  62                         }
  63                 }
  64
  65                 // $toObj may very easily be false if the $result list is cached
  66                 if ( !is_object( $toObj ) ) {
  67                         return '<s>' . $skin->makeLinkObj( $fromObj ) . '</s>';
  68                 }
  69
  70                 $from = $skin->makeKnownLinkObj( $fromObj ,'', 'redirect=no' );
  71                 $edit = $skin->makeBrokenLinkObj( $fromObj , "(".wfMsg("qbedit").")" , 'redirect=no');
  72                 $to   = $skin->makeBrokenLinkObj( $toObj );
  73
  74                 return "$from $edit &rarr; $to";
  75         }
  76 }
  77
  78 /**
  79  * constructor
  80  */
  81 function wfSpecialBrokenRedirects() {
  82         list( $limit, $offset ) = wfCheckLimits();
  83
  84         $sbr = new BrokenRedirectsPage();
  85
  86         return $sbr->doQuery( $offset, $limit );
  87
  88 }
  89 ?>