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<?php
# Copyright (C) 2005 Brion Vibber <brion@pobox.com>
# http://www.mediawiki.org/
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
# http://www.gnu.org/copyleft/gpl.html
/**
* Look for 'orphan' revisions hooked to pages which don't exist
* And 'childless' pages with no revisions.
* Then, kill the poor widows and orphans.
* Man this is depressing.
*
* @author <brion@pobox.com>
* @package MediaWiki
* @subpackage Maintenance
*/
$options = array( 'fix' );
/** */
require_once( 'commandLine.inc' );
$wgTitle = Title::newFromText( 'Orphan revision cleanup script' );
checkOrphans( isset( $options['fix'] ) );
checkSeparation( isset( $options['fix'] ) );
#checkWidows( isset( $options['fix'] ) );
# ------
function checkOrphans( $fix ) {
$dbw =& wfGetDB( DB_MASTER );
$page = $dbw->tableName( 'page' );
$revision = $dbw->tableName( 'revision' );
if( $fix ) {
$dbw->query( "LOCK TABLES $page WRITE, $revision WRITE" );
}
echo "Checking for orphan revision table entries... (this may take a while on a large wiki)\n";
$result = $dbw->query( "
SELECT *
FROM $revision LEFT OUTER JOIN $page ON rev_page=page_id
WHERE page_id IS NULL
");
$orphans = $dbw->numRows( $result );
if( $orphans > 0 ) {
global $wgContLang;
echo "$orphans orphan revisions...\n";
printf( "%10s %10s %14s %20s %s\n", 'rev_id', 'rev_page', 'rev_timestamp', 'rev_user_text', 'rev_comment' );
while( $row = $dbw->fetchObject( $result ) ) {
$comment = ( $row->rev_comment == '' )
? ''
: '(' . $wgContLang->truncate( $row->rev_comment, 40, '...' ) . ')';
printf( "%10d %10d %14s %20s %s\n",
$row->rev_id,
$row->rev_page,
$row->rev_timestamp,
$wgContLang->truncate( $row->rev_user_text, 17, '...' ),
$comment );
if( $fix ) {
$dbw->delete( 'revision', array( 'rev_id' => $row->rev_id ) );
}
}
if( !$fix ) {
echo "Run again with --fix to remove these entries automatically.\n";
}
} else {
echo "No orphans! Yay!\n";
}
if( $fix ) {
$dbw->query( "UNLOCK TABLES" );
}
}
/**
* @todo DON'T USE THIS YET! It will remove entries which have children,
* but which aren't properly attached (eg if page_latest is bogus
* but valid revisions do exist)
*/
function checkWidows( $fix ) {
$dbw =& wfGetDB( DB_MASTER );
$page = $dbw->tableName( 'page' );
$revision = $dbw->tableName( 'revision' );
if( $fix ) {
$dbw->query( "LOCK TABLES $page WRITE, $revision WRITE" );
}
echo "\nChecking for childless page table entries... (this may take a while on a large wiki)\n";
$result = $dbw->query( "
SELECT *
FROM $page LEFT OUTER JOIN $revision ON page_latest=rev_id
WHERE rev_id IS NULL
");
$widows = $dbw->numRows( $result );
if( $widows > 0 ) {
global $wgContLang;
echo "$widows childless pages...\n";
printf( "%10s %11s %2s %s\n", 'page_id', 'page_latest', 'ns', 'page_title' );
while( $row = $dbw->fetchObject( $result ) ) {
printf( "%10d %11d %2d %s\n",
$row->page_id,
$row->page_latest,
$row->page_namespace,
$row->page_title );
if( $fix ) {
$dbw->delete( 'page', array( 'page_id' => $row->page_id ) );
}
}
if( !$fix ) {
echo "Run again with --fix to remove these entries automatically.\n";
}
} else {
echo "No childless pages! Yay!\n";
}
if( $fix ) {
$dbw->query( "UNLOCK TABLES" );
}
}
function checkSeparation( $fix ) {
$dbw =& wfGetDB( DB_MASTER );
$page = $dbw->tableName( 'page' );
$revision = $dbw->tableName( 'revision' );
$text = $dbw->tableName( 'text' );
if( $fix ) {
$dbw->query( "LOCK TABLES $page WRITE, $revision WRITE, $text WRITE" );
}
echo "\nChecking for pages whose page_latest links are incorrect... (this may take a while on a large wiki)\n";
$result = $dbw->query( "
SELECT *
FROM $page LEFT OUTER JOIN $revision ON page_latest=rev_id
");
$found = 0;
while( $row = $dbw->fetchObject( $result ) ) {
$result2 = $dbw->query( "
SELECT MAX(rev_timestamp) as max_timestamp
FROM $revision
WHERE rev_page=$row->page_id
" );
$row2 = $dbw->fetchObject( $result2 );
$dbw->freeResult( $result2 );
if( $row2 ) {
if( $row->rev_timestamp != $row2->max_timestamp ) {
if( $found == 0 ) {
printf( "%10s %10s %14s %14s\n",
'page_id', 'rev_id', 'timestamp', 'max timestamp' );
}
++$found;
printf( "%10d %10d %14s %14s\n",
$row->page_id,
$row->page_latest,
$row->rev_timestamp,
$row2->max_timestamp );
if( $fix ) {
# ...
$maxId = $dbw->selectField(
'revision',
'rev_id',
array(
'rev_page' => $row->page_id,
'rev_timestamp' => $row2->max_timestamp ) );
echo "... updating to revision $maxId\n";
$maxRev = Revision::newFromId( $maxId );
$title = Title::makeTitle( $row->page_namespace, $row->page_title );
$article = new Article( $title );
$article->updateRevisionOn( $dbw, $maxRev );
}
}
} else {
echo "wtf\n";
}
}
if( $found ) {
echo "Found $found pages with incorrect latest revision.\n";
} else {
echo "No pages with incorrect latest revision. Yay!\n";
}
if( !$fix && $found > 0 ) {
echo "Run again with --fix to remove these entries automatically.\n";
}
if( $fix ) {
$dbw->query( "UNLOCK TABLES" );
}
}
?>
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