131 lines
No EOL
3.9 KiB
PHP
131 lines
No EOL
3.9 KiB
PHP
<?php
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# Copyright (C) 2004 Brion Vibber <brion@pobox.com>
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# http://www.mediawiki.org/
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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# http://www.gnu.org/copyleft/gpl.html
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/**
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* If on the old non-unique indexes, check the cur table for duplicate
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* entries and remove them...
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*
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* @package MediaWiki
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* @subpackage Maintenance
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*/
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function fixDupes( $fixthem = false) {
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$dbw =& wfGetDB( DB_MASTER );
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$cur = $dbw->tableName( 'cur' );
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$old = $dbw->tableName( 'old' );
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$dbw->query( "LOCK TABLES $cur WRITE, $old WRITE" );
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echo "Checking for duplicate cur table entries... (this may take a while on a large wiki)\n";
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$res = $dbw->query( <<<END
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SELECT cur_namespace,cur_title,count(*) as c,min(cur_id) as id
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FROM $cur
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GROUP BY cur_namespace,cur_title
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HAVING c > 1
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END
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);
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$n = $dbw->numRows( $res );
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echo "Found $n titles with duplicate entries.\n";
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if( $n > 0 ) {
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if( $fixthem ) {
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echo "Correcting...\n";
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} else {
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echo "Just a demo...\n";
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}
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while( $row = $dbw->fetchObject( $res ) ) {
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$ns = intval( $row->cur_namespace );
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$title = $dbw->addQuotes( $row->cur_title );
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# Get the first responding ID; that'll be the one we keep.
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$id = $dbw->selectField( 'cur', 'cur_id', array(
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'cur_namespace' => $row->cur_namespace,
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'cur_title' => $row->cur_title ) );
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echo "$ns:$row->cur_title (canonical ID $id)\n";
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if( $id != $row->id ) {
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echo " ** minimum ID $row->id; ";
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$timeMin = $dbw->selectField( 'cur', 'cur_timestamp', array(
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'cur_id' => $row->id ) );
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$timeFirst = $dbw->selectField( 'cur', 'cur_timestamp', array(
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'cur_id' => $id ) );
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if( $timeMin == $timeFirst ) {
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echo "timestamps match at $timeFirst; ok\n";
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} else {
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echo "timestamps don't match! min: $timeMin, first: $timeFirst; ";
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if( $timeMin > $timeFirst ) {
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$id = $row->id;
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echo "keeping minimum: $id\n";
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} else {
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echo "keeping first: $id\n";
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}
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}
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}
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if( $fixthem ) {
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$dbw->query( <<<END
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INSERT
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INTO $old
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(old_namespace, old_title, old_text,
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old_comment, old_user, old_user_text,
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old_timestamp, old_minor_edit, old_flags,
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inverse_timestamp)
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SELECT cur_namespace, cur_title, cur_text,
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cur_comment, cur_user, cur_user_text,
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cur_timestamp, cur_minor_edit, '',
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inverse_timestamp
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FROM $cur
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WHERE cur_namespace=$ns
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AND cur_title=$title
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AND cur_id != $id
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END
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);
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$dbw->query( <<<END
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DELETE
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FROM $cur
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WHERE cur_namespace=$ns
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AND cur_title=$title
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AND cur_id != $id
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END
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);
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}
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}
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}
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$dbw->query( 'UNLOCK TABLES' );
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if( $fixthem ) {
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echo "Done.\n";
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} else {
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echo "Run again with --fix option to delete the duplicates.\n";
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}
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}
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function checkDupes( $fixthem = false, $indexonly = false ) {
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global $wgDBname;
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$dbw =& wfGetDB( DB_MASTER );
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if( $dbw->indexExists( 'cur', 'name_title' ) &&
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$dbw->indexUnique( 'cur', 'name_title' ) ) {
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echo "$wgDBname: cur table has the current unique index; no duplicate entries.\n";
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} elseif( $dbw->indexExists( 'cur', 'name_title_dup_prevention' ) ) {
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echo "$wgDBname: cur table has a temporary name_title_dup_prevention unique index; no duplicate entries.\n";
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} else {
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echo "$wgDBname: cur table has the old non-unique index and may have duplicate entries.\n";
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if( !$indexonly ) {
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fixDupes( $fixthem );
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}
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}
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}
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?>
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