1 files changed, 64 insertions, 0 deletions
diff --git a/lib/cache/apc.php b/lib/cache/apc.php
new file mode 100644
index 00000000000..c192fe2f196
--- /dev/null
+++ b/lib/cache/apc.php
@@ -0,0 +1,64 @@
+<?php
+/**
+ * Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+class OC_Cache_APC {
+	protected $prefix;
+
+	public function __construct($global = false) {
+		$this->prefix = OC_Util::getInstanceId().'/';
+		if (!$global) {
+			$this->prefix .= OC_User::getUser().'/';
+		}
+	}
+
+	/**
+	 * entries in APC gets namespaced to prevent collisions between owncloud instances and users
+	 */
+	protected function getNameSpace() {
+		return $this->prefix;
+	}
+
+	public function get($key) {
+		$result = apc_fetch($this->getNamespace().$key, $success);
+		if (!$success) {
+			return null;
+		}
+		return $result;
+	}
+
+	public function set($key, $value, $ttl=0) {
+		return apc_store($this->getNamespace().$key, $value, $ttl);
+	}
+
+	public function hasKey($key) {
+		return apc_exists($this->getNamespace().$key);
+	}
+
+	public function remove($key) {
+		return apc_delete($this->getNamespace().$key);
+	}
+
+	public function clear($prefix=''){
+		$ns = $this->getNamespace().$prefix;
+		$cache = apc_cache_info('user');
+		foreach($cache['cache_list'] as $entry) {
+			if (strpos($entry['info'], $ns) === 0) {
+				apc_delete($entry['info']);
+			}
+		}
+		return true;
+	}
+}
+if(!function_exists('apc_exists')) {
+	function apc_exists($keys)
+	{
+		$result;
+		apc_fetch($keys, $result);
+		return $result;
+	}
+}