public function load($file,$context)
	{
		$pattern='/(msgctxt\s+"(.*?(?<!\\\\))")?\s+'
			.'msgid\s+((?:".*(?<!\\\\)"\s*)+)\s+'
			.'msgstr\s+((?:".*(?<!\\\\)"\s*)+)/';
		$matches=array();
		$n=preg_match_all($pattern,file_get_contents($file),$matches);

		$messages=array();
		for($i=0; $i<$n; $i++)
		{
			if($matches[2][$i]===$context)
			{
				$id=$this->decode($matches[3][$i]);
				$message=$this->decode($matches[4][$i]);
				$messages[$id]=$message;
			}
		}
		return $messages;
	}