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  * @file
  17  * @ingroup Maintenance
  18  * @author Steve Sanbeg
  19  * based on nukePage by Rob Church
  20  */
  21
  22 require_once( 'commandLine.inc' );
  23 require_once( 'nukePage.inc' );
  24
  25 $ns = NS_MEDIAWIKI;
  26 $delete = false;
  27
  28 if (isset($options['ns']))
  29 {
  30   $ns = $options['ns'];
  31 }
  32
  33 if (isset( $options['delete'] ) and $options['delete'])
  34 {
  35   $delete = true;
  36 }
  37
  38
  39 NukeNS( $ns, $delete);
  40
  41 function NukeNS($ns_no, $delete) {
  42
  43   $dbw = wfGetDB( DB_MASTER );
  44   $dbw->begin();
  45
  46   $tbl_pag = $dbw->tableName( 'page' );
  47   $tbl_rev = $dbw->tableName( 'revision' );
  48   $res = $dbw->query( "SELECT page_title FROM $tbl_pag WHERE page_namespace = $ns_no" );
  49
  50   $n_deleted = 0;
  51
  52   while( $row = $dbw->fetchObject( $res ) ) {
  53     //echo "$ns_name:".$row->page_title, "\n";
  54     $title = Title::newFromText($row->page_title, $ns_no);
  55     $id   = $title->getArticleID();
  56
  57     // Get corresponding revisions
  58     $res2 = $dbw->query( "SELECT rev_id FROM $tbl_rev WHERE rev_page = $id" );
  59     $revs = array();
  60
  61     while( $row2 = $dbw->fetchObject( $res2 ) ) {
  62       $revs[] = $row2->rev_id;
  63     }
  64     $count = count( $revs );
  65
  66     //skip anything that looks modified (i.e. multiple revs)
  67     if (($count == 1)) {
  68       #echo $title->getPrefixedText(), "\t", $count, "\n";
  69       echo "delete: ", $title->getPrefixedText(), "\n";
  70
  71       //as much as I hate to cut & paste this, it's a little different, and
  72       //I already have the id & revs
  73
  74       if( $delete ) {
  75         $dbw->query( "DELETE FROM $tbl_pag WHERE page_id = $id" );
  76         $dbw->commit();
  77         // Delete revisions as appropriate
  78         DeleteRevisions( $revs );
  79         PurgeRedundantText( true );
  80         $n_deleted ++;
  81       }
  82     } else {
  83       echo "skip: ", $title->getPrefixedText(), "\n";
  84     }
  85
  86
  87   }
  88   $dbw->commit();
  89
  90   if ($n_deleted > 0) {
  91     #update statistics - better to decrement existing count, or just count
  92     #the page table?
  93     $pages = $dbw->selectField('site_stats', 'ss_total_pages');
  94     $pages -= $n_deleted;
  95     $dbw->update( 'site_stats',
  96                   array('ss_total_pages' => $pages ),
  97                   array( 'ss_row_id' => 1),
  98                   __METHOD__ );
  99
 100   }
 101
 102   if (!$delete) {
 103     echo( "To update the database, run the script with the --delete option.\n" );
 104   }
 105
 106 }
 107
 108