/**
* @brief Generates a Universally Unique IDentifier, version 1, 3, 4 or 5.
*
* This function generates a truly random UUID. The built in CakePHP String::uuid() function
* is not cryptographically secure. You should uses this function instead.
*
* @see http://tools.ietf.org/html/rfc4122#section-4.4
* @see http://en.wikipedia.org/wiki/UUID
* @return string A UUID, made up of 32 hex digits and 4 hyphens.
*/
function generate($version = null, $ns = null, $name = null)
{
if ($version == null) {
$version = $this->version;
}
switch ($version) {
case Uuid::UUID_V1:
return Uuid::v1();
case Uuid::UUID_V3:
return Uuid::v3($ns, $name);
case Uuid::UUID_V4:
return Uuid::v4();
case Uuid::UUID_V5:
return Uuid::v5($ns, $name);
}
}