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                 $this->addOption( 'all', 'Delete everything regardless of revision count' );
  45         }
  46
  47         public function execute() {
  48                 $ns = $this->getOption( 'ns', NS_MEDIAWIKI );
  49                 $delete = $this->getOption( 'delete', false );
  50                 $all = $this->getOption( 'all', false );
  51                 $dbw = wfGetDB( DB_MASTER );
  52                 $dbw->begin( __METHOD__ );
  53
  54                 $tbl_pag = $dbw->tableName( 'page' );
  55                 $tbl_rev = $dbw->tableName( 'revision' );
  56                 $res = $dbw->query( "SELECT page_title FROM $tbl_pag WHERE page_namespace = $ns" );
  57
  58                 $n_deleted = 0;
  59
  60                 foreach ( $res as $row ) {
  61                         // echo "$ns_name:".$row->page_title, "\n";
  62                         $title = Title::makeTitle( $ns, $row->page_title );
  63                         $id   = $title->getArticleID();
  64
  65                         // Get corresponding revisions
  66                         $res2 = $dbw->query( "SELECT rev_id FROM $tbl_rev WHERE rev_page = $id" );
  67                         $revs = array();
  68
  69                         foreach ( $res2 as $row2 ) {
  70                                 $revs[] = $row2->rev_id;
  71                         }
  72                         $count = count( $revs );
  73
  74                         // skip anything that looks modified (i.e. multiple revs)
  75                         if ( $all || $count == 1 ) {
  76                                 # echo $title->getPrefixedText(), "\t", $count, "\n";
  77                                 $this->output( "delete: " . $title->getPrefixedText() . "\n" );
  78
  79                                 // as much as I hate to cut & paste this, it's a little different, and
  80                                 // I already have the id & revs
  81                                 if ( $delete ) {
  82                                         $dbw->query( "DELETE FROM $tbl_pag WHERE page_id = $id" );
  83                                         $dbw->commit( __METHOD__ );
  84                                         // Delete revisions as appropriate
  85                                         $child = $this->runChild( 'NukePage', 'nukePage.php' );
  86                                         $child->deleteRevisions( $revs );
  87                                         $this->purgeRedundantText( true );
  88                                         $n_deleted ++;
  89                                 }
  90                         } else {
  91                           $this->output( "skip: " . $title->getPrefixedText() . "\n" );
  92                         }
  93                 }
  94                 $dbw->commit( __METHOD__ );
  95
  96                 if ( $n_deleted > 0 ) {
  97                         # update statistics - better to decrement existing count, or just count
  98                         # the page table?
  99                         $pages = $dbw->selectField( 'site_stats', 'ss_total_pages' );
 100                         $pages -= $n_deleted;
 101                         $dbw->update(
 102                                 'site_stats',
 103                                 array( 'ss_total_pages' => $pages ),
 104                                 array( 'ss_row_id' => 1 ),
 105                                 __METHOD__
 106                         );
 107                 }
 108
 109                 if ( !$delete ) {
 110                         $this->output( "To update the database, run the script with the --delete option.\n" );
 111                 }
 112         }
 113 }
 114
 115 $maintClass = "NukeNS";
 116 require_once( RUN_MAINTENANCE_IF_MAIN );