/**
* Create a version 5 UUID based upon a name and a given namespace
*
* @param util.UUID namespace
* @param string name
* @return util.UUID
*/
public static function sha1UUID(self $namespace, $name)
{
$bytes = sha1($namespace->getBytes() . iconv(xp::ENCODING, 'utf-8', $name));
return new self(array(5, hexdec(substr($bytes, 0, 8)), hexdec(substr($bytes, 8, 4)), hexdec(substr($bytes, 12, 4)) & 0xfff, hexdec(substr($bytes, 16, 4)) & 0x3fff | 0x8000, array_map('hexdec', str_split(substr($bytes, 20, 12), 2))));
}
