includes/SpecialBrokenRedirects.php

   1 <?php
   2 /**
   3  *
   4  * @addtogroup SpecialPage
   5  */
   6
   7 /**
   8  *
   9  * @addtogroup SpecialPage
  10  */
  11 class BrokenRedirectsPage extends PageQueryPage {
  12         var $targets = array();
  13
  14         function getName() {
  15                 return 'BrokenRedirects';
  16         }
  17
  18         function isExpensive( ) { return true; }
  19         function isSyndicated() { return false; }
  20
  21         function getPageHeader( ) {
  22                 global $wgOut;
  23                 return $wgOut->parse( wfMsg( 'brokenredirectstext' ) );
  24         }
  25
  26         function getSQL() {
  27                 $dbr = wfGetDB( DB_SLAVE );
  28                 list( $page, $pagelinks ) = $dbr->tableNamesN( 'page', 'pagelinks' );
  29
  30                 $sql = "SELECT 'BrokenRedirects'  AS type,
  31                                 p1.page_namespace AS namespace,
  32                                 p1.page_title     AS title,
  33                                 pl_namespace,
  34                                 pl_title
  35                            FROM $pagelinks AS pl
  36                    JOIN $page p1 ON (p1.page_is_redirect=1 AND pl.pl_from=p1.page_id)
  37                       LEFT JOIN $page AS p2 ON (pl_namespace=p2.page_namespace AND pl_title=p2.page_title )
  38                                 WHERE p2.page_namespace IS NULL";
  39                 return $sql;
  40         }
  41
  42         function getOrder() {
  43                 return '';
  44         }
  45
  46         function formatResult( $skin, $result ) {
  47                 global $wgUser, $wgContLang;
  48
  49                 $fromObj = Title::makeTitle( $result->namespace, $result->title );
  50                 if ( isset( $result->pl_title ) ) {
  51                         $toObj = Title::makeTitle( $result->pl_namespace, $result->pl_title );
  52                 } else {
  53                         $blinks = $fromObj->getBrokenLinksFrom();
  54                         if ( $blinks ) {
  55                                 $toObj = $blinks[0];
  56                         } else {
  57                                 $toObj = false;
  58                         }
  59                 }
  60
  61                 // $toObj may very easily be false if the $result list is cached
  62                 if ( !is_object( $toObj ) ) {
  63                         return '<s>' . $skin->makeLinkObj( $fromObj ) . '</s>';
  64                 }
  65
  66                 $from = $skin->makeKnownLinkObj( $fromObj ,'', 'redirect=no' );
  67                 $edit = $skin->makeKnownLinkObj( $fromObj, wfMsgHtml( 'brokenredirects-edit' ), 'action=edit' );
  68                 $to   = $skin->makeBrokenLinkObj( $toObj );
  69                 $arr = $wgContLang->getArrow();
  70
  71                 $out = "{$from} {$edit}";
  72
  73                 if( $wgUser->isAllowed( 'delete' ) ) {
  74                         $delete = $skin->makeKnownLinkObj( $fromObj, wfMsgHtml( 'brokenredirects-delete' ), 'action=delete' );
  75                         $out .= " {$delete}";
  76                 }
  77
  78                 $out .= " {$arr} {$to}";
  79                 return $out;
  80         }
  81 }
  82
  83 /**
  84  * constructor
  85  */
  86 function wfSpecialBrokenRedirects() {
  87         list( $limit, $offset ) = wfCheckLimits();
  88
  89         $sbr = new BrokenRedirectsPage();
  90
  91         return $sbr->doQuery( $offset, $limit );
  92
  93 }
  94 ?>