From 719248cdc3e692d575dc0ec9301fece70269e317 Mon Sep 17 00:00:00 2001
From: Max Semenik <maxsem@users.mediawiki.org>
Date: Sun, 18 Oct 2009 10:55:36 +0000
Subject: [PATCH] Added a script for SQLite-specific maintenance tasks

---
 RELEASE-NOTES          |  1 +
 maintenance/sqlite.php | 80 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 81 insertions(+)
 create mode 100644 maintenance/sqlite.php

diff --git a/RELEASE-NOTES b/RELEASE-NOTES
index ff9dd16c91..58bfc33ad9 100644
--- a/RELEASE-NOTES
+++ b/RELEASE-NOTES
@@ -248,6 +248,7 @@ it from source control: http://www.mediawiki.org/wiki/Download_from_SVN
 * (bug 21095) Tracking categories produced by the parser (expensive parser function
   limit exceeded, __NOINDEX__ tracking, etc) can now be disabled by setting the 
   system message ([[MediaWiki:expensive-parserfunction-category]] etc) to "-".
+* Added maintenance script sqlite.php for SQLite-specific maintenance tasks.
 
 === Bug fixes in 1.16 ===
 
diff --git a/maintenance/sqlite.php b/maintenance/sqlite.php
new file mode 100644
index 0000000000..0bbcb25cfc
--- /dev/null
+++ b/maintenance/sqlite.php
@@ -0,0 +1,80 @@
+<?php
+/**
+ * Performs some operations specific to SQLite database backend
+ *
+ * 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 SqliteMaintenance extends Maintenance {
+	public function __construct() {
+		parent::__construct();
+		$this->mDescription = "Performs some operations specific to SQLite database backend";
+		$this->addOption( 'vacuum', 'Clean up database by removing deleted pages. Decreases database file size' );
+		$this->addOption( 'integrity', 'Check database for integrity' );
+	}
+
+	public function execute() {
+		global $wgDBtype;
+		
+		if ( $wgDBtype != 'sqlite' ) {
+			$this->error( "This maintenance script requires a SQLite database.\n" );
+			return;
+		}
+
+		$this->db = wfGetDB( DB_MASTER );
+
+		if ( $this->hasOption( 'vacuum' ) )
+			$this->vacuum();
+
+		if ( $this->hasOption( 'integrity' ) )
+			$this->integrityCheck();
+	}
+
+	private function vacuum() {
+		$prevSize = filesize( $this->db->mDatabaseFile );
+
+		$this->output( 'VACUUM: ' );
+		if ( $this->db->query( 'VACUUM' ) ) {
+			clearstatcache();
+			$newSize = filesize( $this->db->mDatabaseFile );
+			$this->output( sprintf( "Database size was %d bytes, now %d (%.1f%% reduction).\n",
+				$prevSize, $newSize, ( $prevSize - $newSize) / $prevSize ) );
+		} else {
+			$this->output( 'Error\n' );
+		}
+	}
+
+	private function integrityCheck() {
+		$this->output( "Performing database integrity checks:\n" );
+		$res = $this->db->query( 'PRAGMA integrity_check' );
+
+		if ( !$res || $res->numRows() == 0 ) {
+			$this->error( "Error: integrity check query returned nothing.\n" );
+			return;
+		}
+
+		foreach ( $res as $row ) {
+			$this->output( $row->integrity_check );
+		}
+	}
+}
+
+$maintClass = "SqliteMaintenance";
+require_once( DO_MAINTENANCE );
\ No newline at end of file
-- 
2.20.1