wikimedia / mediawiki

maintenance/deleteRevision.php

<?php

For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 32 and the first side effect is on line 24.

/**
 * Delete one or more revisions by moving them to the archive table.
 *
 * 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
 *
 * @file
 * @ingroup Maintenance
 */

require_once __DIR__ . '/Maintenance.php';

/**
 * Maintenance script that deletes one or more revisions by moving them
 * to the archive table.
 *
 * @ingroup Maintenance
 */
class DeleteRevision extends Maintenance {

	public function __construct() {
		parent::__construct();
		$this->addDescription( 'Delete one or more revisions by moving them to the archive table' );
	}

	public function execute() {
		if ( count( $this->mArgs ) == 0 ) {
			$this->error( "No revisions specified", true );
		}

		$this->output( "Deleting revision(s) " . implode( ',', $this->mArgs ) .
			" from " . wfWikiID() . "...\n" );
		$dbw = $this->getDB( DB_MASTER );

		$affected = 0;
		foreach ( $this->mArgs as $revID ) {
			$dbw->insertSelect( 'archive', [ 'page', 'revision' ],
				[
					'ar_namespace' => 'page_namespace',
					'ar_title' => 'page_title',
					'ar_page_id' => 'page_id',
					'ar_comment' => 'rev_comment',
					'ar_user' => 'rev_user',
					'ar_user_text' => 'rev_user_text',
					'ar_timestamp' => 'rev_timestamp',
					'ar_minor_edit' => 'rev_minor_edit',
					'ar_rev_id' => 'rev_id',
					'ar_text_id' => 'rev_text_id',
					'ar_deleted' => 'rev_deleted',
					'ar_len' => 'rev_len',
				],
				[
					'rev_id' => $revID,
					'page_id = rev_page'
				],
				__METHOD__
			);
			if ( !$dbw->affectedRows() ) {
				$this->output( "Revision $revID not found\n" );
			} else {
				$affected += $dbw->affectedRows();
				$pageID = $dbw->selectField(
					'revision',
					'rev_page',
					[ 'rev_id' => $revID ],
					__METHOD__
				);
				$pageLatest = $dbw->selectField(
					'page',
					'page_latest',
					[ 'page_id' => $pageID ],
					__METHOD__
				);
				$dbw->delete( 'revision', [ 'rev_id' => $revID ] );
				if ( $pageLatest == $revID ) {
					// Database integrity
					$newLatest = $dbw->selectField(
						'revision',
						'rev_id',
						[ 'rev_page' => $pageID ],
						__METHOD__,
						[ 'ORDER BY' => 'rev_timestamp DESC' ]
					);
					$dbw->update(
						'page',
						[ 'page_latest' => $newLatest ],
						[ 'page_id' => $pageID ],
						__METHOD__
					);
				}
			}
		}
		$this->output( "Deleted $affected revisions\n" );
	}
}

$maintClass = "DeleteRevision";
require_once RUN_MAINTENANCE_IF_MAIN;