1 files changed, 38 insertions, 0 deletions
diff --git a/lib/private/files/storage/loader.php b/lib/private/files/storage/loader.php
new file mode 100644
index 00000000000..2572ef443bc
--- /dev/null
+++ b/lib/private/files/storage/loader.php
@@ -0,0 +1,38 @@
+<?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;
+
+class Loader {
+	/**
+	 * @var callable[] $storageWrappers
+	 */
+	private $storageWrappers = array();
+
+	/**
+	 * allow modifier storage behaviour by adding wrappers around storages
+	 *
+	 * $callback should be a function of type (string $mountPoint, Storage $storage) => Storage
+	 *
+	 * @param callable $callback
+	 */
+	public function addStorageWrapper($callback) {
+		$this->storageWrappers[] = $callback;
+	}
+
+	public function load($mountPoint, $class, $arguments) {
+		return $this->wrap($mountPoint, new $class($arguments));
+	}
+
+	public function wrap($mountPoint, $storage) {
+		foreach ($this->storageWrappers as $wrapper) {
+			$storage = $wrapper($mountPoint, $storage);
+		}
+		return $storage;
+	}
+}