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<?php
/**
* Run this script to after changing $wgDBprefix on a wiki.
* The wiki will have to get downtime to do this correctly.
*
* 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
*
* @ingroup Maintenance
*/
require_once( dirname(__FILE__) . '/Maintenance.php' );
class RenameDbPrefix extends Maintenance {
public function __construct() {
parent::__construct();
$this->addOption( "old", "Old db prefix [0 for none]", true, true );
$this->addOption( "new", "New db prefix [0 for none]", true, true );
}
public function getDbType() {
return Maintenance::DB_ADMIN;
}
public function execute() {
// Allow for no old prefix
if( $this->getOption( 'old', 0 ) === '0' ) {
$old = '';
} else {
// Use nice safe, sane, prefixes
preg_match( '/^[a-zA-Z]+_$/', $this->getOption('old'), $m );
$old = isset( $m[0] ) ? $m[0] : false;
}
// Allow for no new prefix
if( $this->getOption( 'new', 0 ) === '0' ) {
$new = '';
} else {
// Use nice safe, sane, prefixes
preg_match( '/^[a-zA-Z]+_$/', $this->getOption('new'), $m );
$new = isset( $m[0] ) ? $m[0] : false;
}
if( $old === false || $new === false ) {
$this->error( "Invalid prefix!", true );
}
if( $old === $new ) {
$this->output( "Same prefix. Nothing to rename!\n", true );
}
$this->output( "Renaming DB prefix for tables of $wgDBname from '$old' to '$new'\n" );
$count = 0;
$dbw = wfGetDB( DB_MASTER );
$res = $dbw->query( "SHOW TABLES LIKE '".$dbw->escapeLike( $old )."%'" );
foreach( $res as $row ) {
// XXX: odd syntax. MySQL outputs an oddly cased "Tables of X"
// sort of message. Best not to try $row->x stuff...
$fields = get_object_vars( $row );
// Silly for loop over one field...
foreach( $fields as $resName => $table ) {
// $old should be regexp safe ([a-zA-Z_])
$newTable = preg_replace( '/^'.$old.'/', $new, $table );
$this->output( "Renaming table $table to $newTable\n" );
$dbw->query( "RENAME TABLE $table TO $newTable" );
}
$count++;
}
$this->output( "Done! [$count tables]\n" );
}
}
$maintClass = "RenameDbPrefix";
require_once( DO_MAINTENANCE );
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