add touch() to all storage backands, and make parameter optional

apps/files_sharing/sharedstorage.php

@@ -505,7 +505,13 @@ class OC_Filestorage_Shared extends OC_Filestorage {
 			return $storage->getLocalFile($this->getInternalPath($source));
 		}
 	}
-	
+	public function touch($path, $mtime=null){
+		$source = $this->getSource($path);
+		if ($source) {
+			$storage = OC_Filesystem::getStorage($source);
+			return $storage->touch($this->getInternalPath($source),$time);
+		}
+	}
 }
 
 ?>

lib/filestorage.php

@@ -48,5 +48,6 @@ abstract class OC_Filestorage{
 	abstract public function hash($type,$path,$raw);
 	abstract public function free_space($path);
 	abstract public function search($query);
+	abstract public function touch($path, $mtime=null);
 	abstract public function getLocalFile($path);// get a path to a local version of the file, whether the original file is local or remote
 }

lib/filestorage/common.php

@@ -121,4 +121,5 @@ abstract class OC_Filestorage_Common extends OC_Filestorage {
 		$count=OC_Helper::streamCopy($source,$target);
 		return $tmpFile;
 	}
+// 	abstract public function touch($path, $mtime=null);
 }

lib/filestorage/commontest.php

@@ -72,4 +72,7 @@ class OC_Filestorage_CommonTest extends OC_Filestorage_Common{
 	public function search($query){
 		return $this->storage->search($query);
 	}
+	public function touch($path, $mtime=null){
+		return $this->storage->touch($path,$mtime);
+	}
 }

lib/filestorage/local.php

@@ -58,15 +58,20 @@ class OC_Filestorage_Local extends OC_Filestorage{
 	public function filemtime($path){
 		return filemtime($this->datadir.$path);
 	}
-	public function touch($path, $mtime){
+	public function touch($path, $mtime=null){
 		// sets the modification time of the file to the given value. 
 		// If mtime is nil the current time is set.
 		// note that the access time of the file always changes to the current time.
-		if( touch( $this->datadir.$path, $mtime ) ) {
+		if(!is_null($mtime)){
+			$result=touch( $this->datadir.$path, $mtime );
+		}else{
+			$result=touch( $this->datadir.$path);
+		}
+		if( $result ) {
 			clearstatcache( true, $this->datadir.$path );
 		}
 		
-		return touch($this->datadir.$path, $mtime);
+		return $result;
 	}
 	public function file_get_contents($path){
 		return file_get_contents($this->datadir.$path);

lib/filesystem.php

@@ -345,7 +345,7 @@ class OC_Filesystem{
 	static public function filemtime($path){
 		return self::$defaultInstance->filemtime($path);
 	}
-	static public function touch($path, $mtime){
+	static public function touch($path, $mtime=null){
 		return self::$defaultInstance->touch($path, $mtime);
 	}
 	static public function file_get_contents($path){

lib/filesystemview.php

@@ -163,7 +163,7 @@ class OC_FilesystemView {
 	public function filemtime($path){
 		return $this->basicOperation('filemtime',$path);
 	}
-	public function touch($path, $mtime){
+	public function touch($path, $mtime=null){
 		return $this->basicOperation('touch', $path, array('write'), $mtime);
 	}
 	public function file_get_contents($path){