add specialized storage backend for home folders

lib/private/files/storage/home.php

+<?php
+/**
+ * Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Files\Storage;
+
+/**
+ * Specialized version of Local storage for home directory usage
+ */
+class Home extends Local {
+	/**
+	 * @var \OC\User\User $user
+	 */
+	protected $user;
+
+	public function __construct($arguments) {
+		$this->user = $arguments['user'];
+		$this->datadir = $this->user->getHome();
+		if (substr($this->datadir, -1) !== '/') {
+			$this->datadir .= '/';
+		}
+	}
+
+	public function getId() {
+		return 'home::' . $this->user->getUID();
+	}
+}

tests/lib/files/storage/home.php

+<?php
+/**
+ * ownCloud
+ *
+ * @author Robin Appelman
+ * @copyright 2012 Robin Appelman icewind@owncloud.com
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+namespace Test\Files\Storage;
+
+use OC\User\User;
+
+class DummyUser extends User {
+	private $home;
+
+	private $uid;
+
+	public function __construct($uid, $home) {
+		$this->uid = $uid;
+		$this->home = $home;
+	}
+
+	public function getHome() {
+		return $this->home;
+	}
+
+	public function getUID() {
+		return $this->uid;
+	}
+}
+
+class Home extends Storage {
+	/**
+	 * @var string tmpDir
+	 */
+	private $tmpDir;
+
+	/**
+	 * @var \OC\User\User $user
+	 */
+	private $user;
+
+	public function setUp() {
+		$this->tmpDir = \OC_Helper::tmpFolder();
+		$userId = uniqid('user_');
+		$this->user = new DummyUser($userId, $this->tmpDir);
+		$this->instance = new \OC\Files\Storage\Home(array('user' => $this->user));
+	}
+
+	public function tearDown() {
+		\OC_Helper::rmdirr($this->tmpDir);
+	}
+
+	public function testRoot() {
+		$this->assertEquals($this->tmpDir, $this->instance->getLocalFolder(''));
+	}
+}