1 files changed, 82 insertions, 0 deletions
diff --git a/lib/fileobserver.php b/lib/fileobserver.php
new file mode 100644
index 00000000000..08a67521f03
--- /dev/null
+++ b/lib/fileobserver.php
@@ -0,0 +1,82 @@
+<?php
+
+/**
+* ownCloud
+*
+* @author Frank Karlitschek 
+* @copyright 2010 Frank Karlitschek karlitschek@kde.org 
+* 
+* 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/>.
+*/
+
+define('OC_FILEACTION_WRITE',2);
+define('OC_FILEACTION_READ',4);
+define('OC_FILEACTION_DELETE',8);
+define('OC_FILEACTION_CREATE',16);
+define('OC_FILEACTION_RENAME',32);
+
+/**
+ * base class for file observers
+ */
+class OC_FILEOBSERVER{
+	private $mask;
+	
+	public function __construct($arguments){}
+	
+	public function __get($name){
+		switch($name){
+			case 'mask':
+				return $this->mask;
+		}
+	}
+	
+	public function notify($path,$action){}
+}
+
+/**
+ * observer that makes automatic backups
+ */
+class OC_FILEOBSERVER_BACKUP extends OC_FILEOBSERVER{
+	private $storage;
+	
+	public function __construct($arguments){
+		$this->mask=OC_FILEACTION_WRITE+OC_FILEACTION_DELETE+OC_FILEACTION_CREATE+OC_FILEACTION_RENAME;
+		$this->storage=$arguments['storage'];
+	}
+	
+	public function notify($path,$action,$storage){
+		switch($action){
+			case OC_FILEACTION_DELETE:
+				if($storage->is_dir($path)){
+					$this->storage->delTree($path);
+				}else{
+					$this->storage->unlink($path);
+				}
+				break;
+			case OC_FILEACTION_CREATE:
+				if($storage->is_dir($path)){
+					$this->storage->mkdir($path);
+					break;
+				}
+			case OC_FILEACTION_WRITE:
+				$tmpFile=$storage->toTmpFile($path);
+				$this->storage->fromTmpFile($tmpFile,$path);
+				break;
+			case OC_FILEACTION_RENAME:
+				list($source,$target)=explode('->',$path);
+				$this->storage->rename($source,$target);
+		}
+	}
+}
+?>
+\ No newline at end of file