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  * @addtogroup Maintenance
  17  * @author Steve Sanbeg
  18  * based on nukePage by Rob Church
  19  */
  20
  21 require_once( 'commandLine.inc' );
  22 require_once( 'nukePage.inc' );
  23
  24 $ns = NS_MEDIAWIKI;
  25 $delete = false;
  26
  27 if (isset($options['ns']))
  28 {
  29   $ns = $options['ns'];
  30 }
  31
  32 if (isset( $options['delete'] ) and $options['delete'])
  33 {
  34   $delete = true;
  35 }
  36
  37
  38 NukeNS( $ns, $delete);
  39
  40 function NukeNS($ns_no, $delete) {
  41
  42   $dbw = wfGetDB( DB_MASTER );
  43   $dbw->begin();
  44
  45   $tbl_pag = $dbw->tableName( 'page' );
  46   $tbl_rev = $dbw->tableName( 'revision' );
  47   $res = $dbw->query( "SELECT page_title FROM $tbl_pag WHERE page_namespace = $ns_no" );
  48
  49   $n_deleted = 0;
  50
  51   while( $row = $dbw->fetchObject( $res ) ) {
  52     //echo "$ns_name:".$row->page_title, "\n";
  53     $title = Title::newFromText($row->page_title, $ns_no);
  54     $id   = $title->getArticleID();
  55
  56     // Get corresponding revisions
  57     $res2 = $dbw->query( "SELECT rev_id FROM $tbl_rev WHERE rev_page = $id" );
  58     $revs = array();
  59
  60     while( $row2 = $dbw->fetchObject( $res2 ) ) {
  61       $revs[] = $row2->rev_id;
  62     }
  63     $count = count( $revs );
  64
  65     //skip anything that looks modified (i.e. multiple revs)
  66     if (($count == 1)) {
  67       #echo $title->getPrefixedText(), "\t", $count, "\n";
  68       echo "delete: ", $title->getPrefixedText(), "\n";
  69
  70       //as much as I hate to cut & paste this, it's a little different, and
  71       //I already have the id & revs
  72
  73       if( $delete ) {
  74         $dbw->query( "DELETE FROM $tbl_pag WHERE page_id = $id" );
  75         $dbw->commit();
  76         // Delete revisions as appropriate
  77         DeleteRevisions( $revs );
  78         PurgeRedundantText( true );
  79         $n_deleted ++;
  80       }
  81     } else {
  82       echo "skip: ", $title->getPrefixedText(), "\n";
  83     }
  84
  85
  86   }
  87   $dbw->commit();
  88
  89   if ($n_deleted > 0) {
  90     #update statistics - better to decrement existing count, or just count
  91     #the page table?
  92     $pages = $dbw->selectField('site_stats', 'ss_total_pages');
  93     $pages -= $n_deleted;
  94     $dbw->update( 'site_stats',
  95                   array('ss_total_pages' => $pages ),
  96                   array( 'ss_row_id' => 1),
  97                   __METHOD__ );
  98
  99   }
 100
 101   if (!$delete) {
 102     echo( "To update the database, run the script with the --delete option.\n" );
 103   }
 104
 105 }
 106
 107