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() { return true; }
  37         function isSyndicated() { return false; }
  38         function sortDescending() { return false; }
  39
  40         function getPageHeader() {
  41                 return $this->msg( 'brokenredirectstext' )->parseAsBlock();
  42         }
  43
  44         function getQueryInfo() {
  45                 return array(
  46                         'tables' => array( 'redirect', 'p1' => 'page',
  47                                         'p2' => 'page' ),
  48                         'fields' => array( 'namespace' => 'p1.page_namespace',
  49                                         'title' => 'p1.page_title',
  50                                         'value' => 'p1.page_title',
  51                                         'rd_namespace',
  52                                         'rd_title'
  53                         ),
  54                         'conds' => array( 'rd_namespace >= 0',
  55                                         'p2.page_namespace IS NULL'
  56                         ),
  57                         'join_conds' => array( 'p1' => array( 'JOIN', array(
  58                                                 'rd_from=p1.page_id',
  59                                         ) ),
  60                                         'p2' => array( 'LEFT JOIN', array(
  61                                                 'rd_namespace=p2.page_namespace',
  62                                                 'rd_title=p2.page_title'
  63                                         ) )
  64                         )
  65                 );
  66         }
  67
  68         /**
  69          * @return array
  70          */
  71         function getOrderFields() {
  72                 return array ( 'rd_namespace', 'rd_title', 'rd_from' );
  73         }
  74
  75         /**
  76          * @param $skin Skin
  77          * @param $result
  78          * @return String
  79          */
  80         function formatResult( $skin, $result ) {
  81                 $fromObj = Title::makeTitle( $result->namespace, $result->title );
  82                 if ( isset( $result->rd_title ) ) {
  83                         $toObj = Title::makeTitle( $result->rd_namespace, $result->rd_title );
  84                 } else {
  85                         $blinks = $fromObj->getBrokenLinksFrom(); # TODO: check for redirect, not for links
  86                         if ( $blinks ) {
  87                                 $toObj = $blinks[0];
  88                         } else {
  89                                 $toObj = false;
  90                         }
  91                 }
  92
  93                 // $toObj may very easily be false if the $result list is cached
  94                 if ( !is_object( $toObj ) ) {
  95                         return '<del>' . Linker::link( $fromObj ) . '</del>';
  96                 }
  97
  98                 $from = Linker::linkKnown(
  99                         $fromObj,
 100                         null,
 101                         array(),
 102                         array( 'redirect' => 'no' )
 103                 );
 104                 $links = array();
 105                 $links[] = Linker::linkKnown(
 106                         $fromObj,
 107                         $this->msg( 'brokenredirects-edit' )->escaped(),
 108                         array(),
 109                         array( 'action' => 'edit' )
 110                 );
 111                 $to = Linker::link(
 112                         $toObj,
 113                         null,
 114                         array(),
 115                         array(),
 116                         array( 'broken' )
 117                 );
 118                 $arr = $this->getLanguage()->getArrow();
 119
 120                 $out = $from . $this->msg( 'word-separator' )->escaped();
 121
 122                 if( $this->getUser()->isAllowed( 'delete' ) ) {
 123                         $links[] = Linker::linkKnown(
 124                                 $fromObj,
 125                                 $this->msg( 'brokenredirects-delete' )->escaped(),
 126                                 array(),
 127                                 array( 'action' => 'delete' )
 128                         );
 129                 }
 130
 131                 $out .= $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->pipeList( $links ) )->escaped();
 132                 $out .= " {$arr} {$to}";
 133                 return $out;
 134         }
 135 }