1 files changed, 54 insertions, 0 deletions
diff --git a/lib/private/files/storage/storagefactory.php b/lib/private/files/storage/storagefactory.php
new file mode 100644
index 00000000000..c9e8d422f9d
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+++ b/lib/private/files/storage/storagefactory.php
@@ -0,0 +1,54 @@
+<?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;
+
+use OCP\Files\Storage\IStorageFactory;
+
+class StorageFactory implements IStorageFactory {
+	/**
+	 * @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 string $wrapperName
+	 * @param callable $callback
+	 */
+	public function addStorageWrapper($wrapperName, $callback) {
+		$this->storageWrappers[$wrapperName] = $callback;
+	}
+
+	/**
+	 * Create an instance of a storage and apply the registered storage wrappers
+	 *
+	 * @param string|boolean $mountPoint
+	 * @param string $class
+	 * @param array $arguments
+	 * @return \OCP\Files\Storage
+	 */
+	public function getInstance($mountPoint, $class, $arguments) {
+		return $this->wrap($mountPoint, new $class($arguments));
+	}
+
+	/**
+	 * @param string|boolean $mountPoint
+	 * @param \OCP\Files\Storage $storage
+	 * @return \OCP\Files\Storage
+	 */
+	public function wrap($mountPoint, $storage) {
+		foreach ($this->storageWrappers as $wrapper) {
+			$storage = $wrapper($mountPoint, $storage);
+		}
+		return $storage;
+	}
+}