From 63601400e476c6cf43d985f3e7b9864681695ed4 Mon Sep 17 00:00:00 2001
From: Pierre Schmitz <pierre@archlinux.de>
Date: Fri, 18 Jan 2013 16:46:04 +0100
Subject: Update to MediaWiki 1.20.2

this update includes:
* adjusted Arch Linux skin
* updated FluxBBAuthPlugin
* patch for https://bugzilla.wikimedia.org/show_bug.cgi?id=44024
---
 .../filebackend/lockmanager/LockManagerGroup.php   | 143 +++++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100644 includes/filebackend/lockmanager/LockManagerGroup.php

(limited to 'includes/filebackend/lockmanager/LockManagerGroup.php')

diff --git a/includes/filebackend/lockmanager/LockManagerGroup.php b/includes/filebackend/lockmanager/LockManagerGroup.php
new file mode 100644
index 00000000..8c8c940a
--- /dev/null
+++ b/includes/filebackend/lockmanager/LockManagerGroup.php
@@ -0,0 +1,143 @@
+<?php
+/**
+ * Lock manager registration handling.
+ *
+ * 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 LockManager
+ */
+
+/**
+ * Class to handle file lock manager registration
+ *
+ * @ingroup LockManager
+ * @author Aaron Schulz
+ * @since 1.19
+ */
+class LockManagerGroup {
+	/**
+	 * @var LockManagerGroup
+	 */
+	protected static $instance = null;
+
+	/** @var Array of (name => ('class' =>, 'config' =>, 'instance' =>)) */
+	protected $managers = array();
+
+	protected function __construct() {}
+
+	/**
+	 * @return LockManagerGroup
+	 */
+	public static function singleton() {
+		if ( self::$instance == null ) {
+			self::$instance = new self();
+			self::$instance->initFromGlobals();
+		}
+		return self::$instance;
+	}
+
+	/**
+	 * Destroy the singleton instance, so that a new one will be created next
+	 * time singleton() is called.
+	 */
+	public static function destroySingleton() {
+		self::$instance = null;
+	}
+
+	/**
+	 * Register lock managers from the global variables
+	 *
+	 * @return void
+	 */
+	protected function initFromGlobals() {
+		global $wgLockManagers;
+
+		$this->register( $wgLockManagers );
+	}
+
+	/**
+	 * Register an array of file lock manager configurations
+	 *
+	 * @param $configs Array
+	 * @return void
+	 * @throws MWException
+	 */
+	protected function register( array $configs ) {
+		foreach ( $configs as $config ) {
+			if ( !isset( $config['name'] ) ) {
+				throw new MWException( "Cannot register a lock manager with no name." );
+			}
+			$name = $config['name'];
+			if ( !isset( $config['class'] ) ) {
+				throw new MWException( "Cannot register lock manager `{$name}` with no class." );
+			}
+			$class = $config['class'];
+			unset( $config['class'] ); // lock manager won't need this
+			$this->managers[$name] = array(
+				'class'    => $class,
+				'config'   => $config,
+				'instance' => null
+			);
+		}
+	}
+
+	/**
+	 * Get the lock manager object with a given name
+	 *
+	 * @param $name string
+	 * @return LockManager
+	 * @throws MWException
+	 */
+	public function get( $name ) {
+		if ( !isset( $this->managers[$name] ) ) {
+			throw new MWException( "No lock manager defined with the name `$name`." );
+		}
+		// Lazy-load the actual lock manager instance
+		if ( !isset( $this->managers[$name]['instance'] ) ) {
+			$class = $this->managers[$name]['class'];
+			$config = $this->managers[$name]['config'];
+			$this->managers[$name]['instance'] = new $class( $config );
+		}
+		return $this->managers[$name]['instance'];
+	}
+
+	/**
+	 * Get the default lock manager configured for the site.
+	 * Returns NullLockManager if no lock manager could be found.
+	 *
+	 * @return LockManager
+	 */
+	public function getDefault() {
+		return isset( $this->managers['default'] )
+			? $this->get( 'default' )
+			: new NullLockManager( array() );
+	}
+
+	/**
+	 * Get the default lock manager configured for the site
+	 * or at least some other effective configured lock manager.
+	 * Throws an exception if no lock manager could be found.
+	 *
+	 * @return LockManager
+	 * @throws MWException
+	 */
+	public function getAny() {
+		return isset( $this->managers['default'] )
+			? $this->get( 'default' )
+			: $this->get( 'fsLockManager' );
+	}
+}
-- 
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