<?php
/* $Id$ */
namespace Mammut\Util;

(defined('MAMMUT') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

/**
 * GUID/UUID helper class
 *
 * @author Stefan Daurer <s.daurer@q-spot.org>
 * @package Mammut\Util
 */
abstract class UUID extends \Mammut\StrictObject {
	public static function generate($backets = FALSE){
		if (function_exists('com_create_guid')) {
			$uuid = com_create_guid();
			if (!$backets)
				$uuid = str_replace(['{','}'], '', $guid);
		}
		else{
			$charid = strtoupper(md5(uniqid(rand(), true)));
			$uuid = ($backets ? chr(123) : '')// "{"
			.substr($charid, 0, 8).'-'
			.substr($charid, 8, 4).'-'
			.substr($charid,12, 4).'-'
			.substr($charid,16, 4).'-'
			.substr($charid,20,12)
			. ($backets ? chr(125) : '');// "}"
		}
		return strtolower($uuid);
	}
}