maintenance/nukeNS.php

   1 <?php
   2
   3 /**
   4  * Remove pages with only 1 revision from the MediaWiki namespace, without
   5  * flooding recent changes, delete logs, etc.
   6  * Irreversible (can't use standard undelete) and does not update link tables
   7  *
   8  * This is mainly useful to run before maintenance/update.php when upgrading
   9  * to 1.9, to prevent flooding recent changes/deletion logs.  It's intended
  10  * to be conservative, so it's possible that a few entries will be left for
  11  * deletion by the upgrade script.  It's also possible that it hasn't been
  12  * tested thouroughly enough, and will delete something it shouldn't; so
  13  * back up your DB if there's anything in the MediaWiki that is important to
  14  * you.
  15  *
  16  * This program is free software; you can redistribute it and/or modify
  17  * it under the terms of the GNU General Public License as published by
  18  * the Free Software Foundation; either version 2 of the License, or
  19  * (at your option) any later version.
  20  *
  21  * This program is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  24  * GNU General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License along
  27  * with this program; if not, write to the Free Software Foundation, Inc.,
  28  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  29  * http://www.gnu.org/copyleft/gpl.html
  30  *
  31  * @ingroup Maintenance
  32  * @author Steve Sanbeg
  33  * based on nukePage by Rob Church
  34  */
  35
  36 require_once( dirname( __FILE__ ) . '/Maintenance.php' );
  37
  38 class NukeNS extends Maintenance {
  39         public function __construct() {
  40                 parent::__construct();
  41                 $this->mDescription = "Remove pages with only 1 revision from any namespace";
  42                 $this->addOption( 'delete', "Actually delete the page" );
  43                 $this->addOption( 'ns', 'Namespace to delete from, default NS_MEDIAWIKI', false, true );
  44         }
  45
  46         public function execute() {
  47                 $ns = $this->getOption( 'ns', NS_MEDIAWIKI );
  48                 $delete = $this->getOption( 'delete', false );
  49                 $dbw = wfGetDB( DB_MASTER );
  50                 $dbw->begin();
  51
  52                 $tbl_pag = $dbw->tableName( 'page' );
  53                 $tbl_rev = $dbw->tableName( 'revision' );
  54                 $res = $dbw->query( "SELECT page_title FROM $tbl_pag WHERE page_namespace = $ns" );
  55
  56                 $n_deleted = 0;
  57
  58                 foreach ( $res as $row ) {
  59                         // echo "$ns_name:".$row->page_title, "\n";
  60                         $title = Title::makeTitle( $ns, $row->page_title );
  61                         $id   = $title->getArticleID();
  62
  63                         // Get corresponding revisions
  64                         $res2 = $dbw->query( "SELECT rev_id FROM $tbl_rev WHERE rev_page = $id" );
  65                         $revs = array();
  66
  67                         foreach ( $res2 as $row2 ) {
  68                                 $revs[] = $row2->rev_id;
  69                         }
  70                         $count = count( $revs );
  71
  72                         // skip anything that looks modified (i.e. multiple revs)
  73                         if ( $count == 1 ) {
  74                                 # echo $title->getPrefixedText(), "\t", $count, "\n";
  75                                 $this->output( "delete: " . $title->getPrefixedText() . "\n" );
  76
  77                                 // as much as I hate to cut & paste this, it's a little different, and
  78                                 // I already have the id & revs
  79                                 if ( $delete ) {
  80                                         $dbw->query( "DELETE FROM $tbl_pag WHERE page_id = $id" );
  81                                         $dbw->commit();
  82                                         // Delete revisions as appropriate
  83                                         $child = $this->runChild( 'NukePage', 'NukePage.php' );
  84                                         $child->deleteRevisions( $revs );
  85                                         $this->purgeRedundantText( true );
  86                                         $n_deleted ++;
  87                                 }
  88                         } else {
  89                           $this->output( "skip: " . $title->getPrefixedText() . "\n" );
  90                         }
  91                 }
  92                 $dbw->commit();
  93
  94                 if ( $n_deleted > 0 ) {
  95                         # update statistics - better to decrement existing count, or just count
  96                         # the page table?
  97                         $pages = $dbw->selectField( 'site_stats', 'ss_total_pages' );
  98                         $pages -= $n_deleted;
  99                         $dbw->update(
 100                                 'site_stats',
 101                                 array( 'ss_total_pages' => $pages ),
 102                                 array( 'ss_row_id' => 1 ),
 103                                 __METHOD__
 104                         );
 105                 }
 106
 107                 if ( !$delete ) {
 108                         $this->output( "To update the database, run the script with the --delete option.\n" );
 109                 }
 110         }
 111 }
 112
 113 $maintClass = "NukeNS";
 114 require_once( RUN_MAINTENANCE_IF_MAIN );