includes/specials/SpecialShortpages.php

   1 <?php
   2 /**
   3  * Implements Special:Shortpages
   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  * SpecialShortpages extends QueryPage. It is used to return the shortest
  26  * pages in the database.
  27  *
  28  * @ingroup SpecialPage
  29  */
  30 class ShortPagesPage extends QueryPage {
  31
  32         function __construct( $name = 'Shortpages' ) {
  33                 parent::__construct( $name );
  34         }
  35
  36         // inexpensive?
  37         /**
  38          * This query is indexed as of 1.5
  39          */
  40         function isExpensive() {
  41                 return true;
  42         }
  43
  44         function isSyndicated() {
  45                 return false;
  46         }
  47
  48         function getQueryInfo() {
  49                 return array (
  50                         'tables' => array ( 'page' ),
  51                         'fields' => array ( 'page_namespace AS namespace',
  52                                         'page_title AS title',
  53                                         'page_len AS value' ),
  54                         'conds' => array ( 'page_namespace' => MWNamespace::getContentNamespaces(),
  55                                         'page_is_redirect' => 0 ),
  56                         'options' => array ( 'USE INDEX' => 'page_len' )
  57                 );
  58         }
  59
  60         function getOrderFields() {
  61                 return array( 'page_len' );
  62         }
  63
  64         /**
  65          * @param $db DatabaseBase
  66          * @param $res
  67          * @return void
  68          */
  69         function preprocessResults( $db, $res ) {
  70                 # There's no point doing a batch check if we aren't caching results;
  71                 # the page must exist for it to have been pulled out of the table
  72                 if( $this->isCached() ) {
  73                         $batch = new LinkBatch();
  74                         foreach ( $res as $row ) {
  75                                 $batch->add( $row->namespace, $row->title );
  76                         }
  77                         $batch->execute();
  78                         if ( $db->numRows( $res ) > 0 ) {
  79                                 $db->dataSeek( $res, 0 );
  80                         }
  81                 }
  82         }
  83
  84         function sortDescending() {
  85                 return false;
  86         }
  87
  88         function formatResult( $skin, $result ) {
  89                 $dm = $this->getLang()->getDirMark();
  90
  91                 $title = Title::makeTitle( $result->namespace, $result->title );
  92                 if ( !$title ) {
  93                         return '<!-- Invalid title ' .  htmlspecialchars( "{$result->namespace}:{$result->title}" ). '-->';
  94                 }
  95                 $hlink = Linker::linkKnown(
  96                         $title,
  97                         wfMsgHtml( 'hist' ),
  98                         array(),
  99                         array( 'action' => 'history' )
 100                 );
 101                 $plink = $this->isCached()
 102                                         ? Linker::link( $title )
 103                                         : Linker::linkKnown( $title );
 104                 $size = $this->msg( 'nbytes' )->numParams( $result->value )->escaped();
 105
 106                 return $title->exists()
 107                                 ? "({$hlink}) {$dm}{$plink} {$dm}[{$size}]"
 108                                 : "<del>({$hlink}) {$dm}{$plink} {$dm}[{$size}]</del>";
 109         }
 110 }