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(
  55                                 'redirect',
  56                                 'p1' => 'page',
  57                                 'p2' => 'page',
  58                         ),
  59                         'fields' => array(
  60                                 'namespace' => 'p1.page_namespace',
  61                                 'title' => 'p1.page_title',
  62                                 'value' => 'p1.page_title',
  63                                 'rd_namespace',
  64                                 'rd_title',
  65                         ),
  66                         'conds' => array(
  67                                 // Exclude pages that don't exist locally as wiki pages,
  68                                 // but aren't "broken" either.
  69                                 // Special pages and interwiki links
  70                                 'rd_namespace >= 0',
  71                                 '(rd_interwiki IS NULL OR rd_interwiki = "")',
  72                                 'p2.page_namespace IS NULL',
  73                         ),
  74                         'join_conds' => array(
  75                                 'p1' => array( 'JOIN', array(
  76                                         'rd_from=p1.page_id',
  77                                 ) ),
  78                                 'p2' => array( 'LEFT JOIN', array(
  79                                         'rd_namespace=p2.page_namespace',
  80                                         'rd_title=p2.page_title'
  81                                 ) ),
  82                         ),
  83                 );
  84         }
  85
  86         /**
  87          * @return array
  88          */
  89         function getOrderFields() {
  90                 return array ( 'rd_namespace', 'rd_title', 'rd_from' );
  91         }
  92
  93         /**
  94          * @param $skin Skin
  95          * @param $result
  96          * @return String
  97          */
  98         function formatResult( $skin, $result ) {
  99                 $fromObj = Title::makeTitle( $result->namespace, $result->title );
 100                 if ( isset( $result->rd_title ) ) {
 101                         $toObj = Title::makeTitle( $result->rd_namespace, $result->rd_title );
 102                 } else {
 103                         $blinks = $fromObj->getBrokenLinksFrom(); # TODO: check for redirect, not for links
 104                         if ( $blinks ) {
 105                                 $toObj = $blinks[0];
 106                         } else {
 107                                 $toObj = false;
 108                         }
 109                 }
 110
 111                 // $toObj may very easily be false if the $result list is cached
 112                 if ( !is_object( $toObj ) ) {
 113                         return '<del>' . Linker::link( $fromObj ) . '</del>';
 114                 }
 115
 116                 $from = Linker::linkKnown(
 117                         $fromObj,
 118                         null,
 119                         array(),
 120                         array( 'redirect' => 'no' )
 121                 );
 122                 $links = array();
 123                 $links[] = Linker::linkKnown(
 124                         $fromObj,
 125                         $this->msg( 'brokenredirects-edit' )->escaped(),
 126                         array(),
 127                         array( 'action' => 'edit' )
 128                 );
 129                 $to = Linker::link(
 130                         $toObj,
 131                         null,
 132                         array(),
 133                         array(),
 134                         array( 'broken' )
 135                 );
 136                 $arr = $this->getLanguage()->getArrow();
 137
 138                 $out = $from . $this->msg( 'word-separator' )->escaped();
 139
 140                 if( $this->getUser()->isAllowed( 'delete' ) ) {
 141                         $links[] = Linker::linkKnown(
 142                                 $fromObj,
 143                                 $this->msg( 'brokenredirects-delete' )->escaped(),
 144                                 array(),
 145                                 array( 'action' => 'delete' )
 146                         );
 147                 }
 148
 149                 $out .= $this->msg( 'parentheses' )->rawParams( $this->getLanguage()->pipeList( $links ) )->escaped();
 150                 $out .= " {$arr} {$to}";
 151                 return $out;
 152         }
 153 }