includes/specials/SpecialBrokenRedirects.php

   1 <?php
   2 /**
   3  * Implements Special:Brokenredirects
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * A special page listing redirects to non existent page. Those should be
  26  * fixed to point to an existing page.
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class BrokenRedirectsPage extends QueryPage {
  31
  32         function __construct( $name = 'BrokenRedirects' ) {
  33                 parent::__construct( $name );
  34         }
  35
  36         function isExpensive() {
  37                 return true;
  38         }
  39
  40         function isSyndicated() {
  41                 return false;
  42         }
  43
  44         function sortDescending() {
  45                 return false;
  46         }
  47
  48         function getPageHeader() {
  49                 return $this->msg( 'brokenredirectstext' )->parseAsBlock();
  50         }
  51
  52         function getQueryInfo() {
  53                 return array(
  54                         'tables' => array( 'redirect', 'p1' => 'page',
  55                                         'p2' => 'page' ),
  56                         'fields' => array( 'namespace' => 'p1.page_namespace',
  57                                         'title' => 'p1.page_title',
  58                                         'value' => 'p1.page_title',
  59                                         'rd_namespace',
  60                                         'rd_title'
  61                         ),
  62                         'conds' => array( 'rd_namespace >= 0',
  63                                         'p2.page_namespace IS NULL'
  64                         ),
  65                         'join_conds' => array( 'p1' => array( 'JOIN', array(
  66                                                 'rd_from=p1.page_id',
  67                                         ) ),
  68                                         'p2' => array( 'LEFT JOIN', array(
  69                                                 'rd_namespace=p2.page_namespace',
  70                                                 'rd_title=p2.page_title'
  71                                         ) )
  72                         )
  73                 );
  74         }
  75
  76         /**
  77          * @return array
  78          */
  79         function getOrderFields() {
  80                 return array ( 'rd_namespace', 'rd_title', 'rd_from' );
  81         }
  82
  83         /**
  84          * @param $skin Skin
  85          * @param $result
  86          * @return String
  87          */
  88         function formatResult( $skin, $result ) {
  89                 $fromObj = Title::makeTitle( $result->namespace, $result->title );
  90                 if ( isset( $result->rd_title ) ) {
  91                         $toObj = Title::makeTitle( $result->rd_namespace, $result->rd_title );
  92                 } else {
  93                         $blinks = $fromObj->getBrokenLinksFrom(); # TODO: check for redirect, not for links
  94                         if ( $blinks ) {
  95                                 $toObj = $blinks[0];
  96                         } else {
  97                                 $toObj = false;
  98                         }
  99                 }
 100
 101                 // $toObj may very easily be false if the $result list is cached
 102                 if ( !is_object( $toObj ) ) {
 103                         return '<del>' . Linker::link( $fromObj ) . '</del>';
 104                 }
 105
 106                 $from = Linker::linkKnown(
 107                         $fromObj,
 108                         null,
 109                         array(),
 110                         array( 'redirect' => 'no' )
 111                 );
 112                 $links = array();
 113                 $links[] = Linker::linkKnown(
 114                         $fromObj,
 115                         $this->msg( 'brokenredirects-edit' )->escaped(),
 116                         array(),
 117                         array( 'action' => 'edit' )
 118                 );
 119                 $to = Linker::link(
 120                         $toObj,
 121                         null,
 122                         array(),
 123                         array(),
 124                         array( 'broken' )
 125                 );
 126                 $arr = $this->getLanguage()->getArrow();
 127
 128                 $out = $from . $this->msg( 'word-separator' )->escaped();
 129
 130                 if( $this->getUser()->isAllowed( 'delete' ) ) {
 131                         $links[] = Linker::linkKnown(
 132                                 $fromObj,
 133                                 $this->msg( 'brokenredirects-delete' )->escaped(),
 134                                 array(),
 135                                 array( 'action' => 'delete' )
 136                         );
 137                 }
 138
 139                 $out .= $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->pipeList( $links ) )->escaped();
 140                 $out .= " {$arr} {$to}";
 141                 return $out;
 142         }
 143 }