/**

* Updates the data

*

* data is a readable stream resource.

*

* @param resource $data

* @return void

*/

public function put($data) {

file_put_contents($this->path,$data);

}

/**

* Returns the data

*

* @return string

*/

public function get() {

return fopen($this->path,'r');

}

/**

* Delete the current file

*

* @return void

*/

public function delete() {

unlink($this->path);

return parent::delete();

}

/**

* Returns the ETag for a file

*

* An ETag is a unique identifier representing the current version of the file. If the file changes, the ETag MUST change.

* The ETag is an arbritrary string, but MUST be surrounded by double-quotes.

*

* Return null if the ETag can not effectively be determined

*/

public function getETag() {

return '"' . md5_file($this->path). '"';

}

/**

* Returns the mime-type for a file

*

* If null is returned, we'll assume application/octet-stream

*/

public function getContentType() {

return null;

}

/**

* Returns the size of the file, in bytes

*

* @return int

*/

public function getSize() {

return filesize($this->path);

}