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