1 files changed, 69 insertions, 0 deletions
diff --git a/lib/private/memcache/xcache.php b/lib/private/memcache/xcache.php
new file mode 100644
index 00000000000..2dc4a3a6016
--- /dev/null
+++ b/lib/private/memcache/xcache.php
@@ -0,0 +1,69 @@
+<?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.
+ */
+
+namespace OC\Memcache;
+
+/**
+ * See http://xcache.lighttpd.net/wiki/XcacheApi for provided constants and
+ * functions etc.
+ */
+class XCache extends Cache {
+	/**
+	 * entries in XCache gets namespaced to prevent collisions between ownCloud instances and users
+	 */
+	protected function getNameSpace() {
+		return $this->prefix;
+	}
+
+	public function get($key) {
+		return xcache_get($this->getNamespace().$key);
+	}
+
+	public function set($key, $value, $ttl=0) {
+		if($ttl>0) {
+			return xcache_set($this->getNamespace().$key, $value, $ttl);
+		}else{
+			return xcache_set($this->getNamespace().$key, $value);
+		}
+	}
+
+	public function hasKey($key) {
+		return xcache_isset($this->getNamespace().$key);
+	}
+
+	public function remove($key) {
+		return xcache_unset($this->getNamespace().$key);
+	}
+
+	public function clear($prefix='') {
+		if (function_exists('xcache_unset_by_prefix')) {
+			return xcache_unset_by_prefix($this->getNamespace().$prefix);
+		} else {
+			// Since we can not clear by prefix, we just clear the whole cache.
+			xcache_clear_cache(\XC_TYPE_VAR, 0);
+		}
+		return true;
+	}
+
+	static public function isAvailable(){
+		if (!extension_loaded('xcache')) {
+			return false;
+		}
+		if (\OC::$CLI) {
+			return false;
+		}
+		if (!function_exists('xcache_unset_by_prefix') && ini_get('xcache.admin.enable_auth')) {
+			// We do not want to use XCache if we can not clear it without
+			// using the administration function xcache_clear_cache()
+			// AND administration functions are password-protected.
+			return false;
+		}
+
+		return true;
+	}
+}