97 lines
3.1 KiB
PHP
97 lines
3.1 KiB
PHP
<?php
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/**
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* Change the prefix of database tables.
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* Run this script to after changing $wgDBprefix on a wiki.
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* The wiki will have to get downtime to do this correctly.
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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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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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* @ingroup Maintenance
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*/
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require_once __DIR__ . '/Maintenance.php';
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/**
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* Maintenance script that changes the prefix of database tables.
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*
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* @ingroup Maintenance
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*/
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class RenameDbPrefix extends Maintenance {
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public function __construct() {
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parent::__construct();
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$this->addOption( "old", "Old db prefix [0 for none]", true, true );
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$this->addOption( "new", "New db prefix [0 for none]", true, true );
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}
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public function getDbType() {
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return Maintenance::DB_ADMIN;
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}
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public function execute() {
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global $wgDBname;
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// Allow for no old prefix
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if ( $this->getOption( 'old', 0 ) === '0' ) {
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$old = '';
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} else {
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// Use nice safe, sane, prefixes
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preg_match( '/^[a-zA-Z]+_$/', $this->getOption( 'old' ), $m );
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$old = $m[0] ?? false;
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}
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// Allow for no new prefix
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if ( $this->getOption( 'new', 0 ) === '0' ) {
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$new = '';
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} else {
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// Use nice safe, sane, prefixes
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preg_match( '/^[a-zA-Z]+_$/', $this->getOption( 'new' ), $m );
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$new = $m[0] ?? false;
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}
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if ( $old === false || $new === false ) {
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$this->fatalError( "Invalid prefix!" );
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}
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if ( $old === $new ) {
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$this->output( "Same prefix. Nothing to rename!\n", true );
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}
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$this->output( "Renaming DB prefix for tables of $wgDBname from '$old' to '$new'\n" );
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$count = 0;
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$dbw = $this->getDB( DB_PRIMARY );
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$res = $dbw->query( "SHOW TABLES " . $dbw->buildLike( $old, $dbw->anyString() ), __METHOD__ );
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foreach ( $res as $row ) {
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// XXX: odd syntax. MySQL outputs an oddly cased "Tables of X"
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// sort of message. Best not to try $row->x stuff...
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$fields = get_object_vars( $row );
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// Silly for loop over one field...
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foreach ( $fields as $table ) {
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// $old should be regexp safe ([a-zA-Z_])
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$newTable = preg_replace( '/^' . $old . '/', $new, $table );
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$this->output( "Renaming table $table to $newTable\n" );
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$oldTableEnc = $dbw->addIdentifierQuotes( $table );
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$newTableEnc = $dbw->addIdentifierQuotes( $newTable );
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$dbw->query( "RENAME TABLE $oldTableEnc TO $newTableEnc", __METHOD__ );
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}
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$count++;
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}
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$this->output( "Done! [$count tables]\n" );
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}
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}
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$maintClass = RenameDbPrefix::class;
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require_once RUN_MAINTENANCE_IF_MAIN;
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