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 getName() {
  33                 return 'Shortpages';
  34         }
  35
  36         /**
  37          * This query is indexed as of 1.5
  38          */
  39         function isExpensive() {
  40                 return true;
  41         }
  42
  43         function isSyndicated() {
  44                 return false;
  45         }
  46
  47         function getSQL() {
  48                 global $wgContentNamespaces;
  49
  50                 $dbr = wfGetDB( DB_SLAVE );
  51                 $page = $dbr->tableName( 'page' );
  52                 $name = $dbr->addQuotes( $this->getName() );
  53
  54                 $forceindex = $dbr->useIndexClause("page_len");
  55
  56                 if ($wgContentNamespaces)
  57                         $nsclause = "page_namespace IN (" . $dbr->makeList($wgContentNamespaces) . ")";
  58                 else
  59                         $nsclause = "page_namespace = " . NS_MAIN;
  60
  61                 return
  62                         "SELECT $name as type,
  63                                 page_namespace as namespace,
  64                                 page_title as title,
  65                                 page_len AS value
  66                         FROM $page $forceindex
  67                         WHERE $nsclause AND page_is_redirect=0";
  68         }
  69
  70         function preprocessResults( $db, $res ) {
  71                 # There's no point doing a batch check if we aren't caching results;
  72                 # the page must exist for it to have been pulled out of the table
  73                 if( $this->isCached() ) {
  74                         $batch = new LinkBatch();
  75                         while( $row = $db->fetchObject( $res ) )
  76                                 $batch->add( $row->namespace, $row->title );
  77                         $batch->execute();
  78                         if( $db->numRows( $res ) > 0 )
  79                                 $db->dataSeek( $res, 0 );
  80                 }
  81         }
  82
  83         function sortDescending() {
  84                 return false;
  85         }
  86
  87         function formatResult( $skin, $result ) {
  88                 global $wgLang, $wgContLang;
  89                 $dm = $wgContLang->getDirMark();
  90
  91                 $title = Title::makeTitleSafe( $result->namespace, $result->title );
  92                 if ( !$title ) {
  93                         return '<!-- Invalid title ' .  htmlspecialchars( "{$result->namespace}:{$result->title}" ). '-->';
  94                 }
  95                 $hlink = $skin->linkKnown(
  96                         $title,
  97                         wfMsgHtml( 'hist' ),
  98                         array(),
  99                         array( 'action' => 'history' )
 100                 );
 101                 $plink = $this->isCached()
 102                                         ? $skin->link( $title )
 103                                         : $skin->linkKnown( $title );
 104                 $size = wfMessage( 'nbytes', $wgLang->formatNum( $result->value ) )->escaped();
 105
 106                 return $title->exists()
 107                                 ? "({$hlink}) {$dm}{$plink} {$dm}[{$size}]"
 108                                 : "<del>({$hlink}) {$dm}{$plink} {$dm}[{$size}]</del>";
 109         }
 110 }
 111
 112 /**
 113  * constructor
 114  */
 115 function wfSpecialShortpages() {
 116         list( $limit, $offset ) = wfCheckLimits();
 117
 118         $spp = new ShortPagesPage();
 119
 120         return $spp->doQuery( $offset, $limit );
 121 }