Subversion Repositories Applications.papyrus

/*
        Copyright (c) 2004-2006, The Dojo Foundation
        All Rights Reserved.

        Licensed under the Academic Free License version 2.1 or above OR the
        modified BSD license. For more information on Dojo licensing, see:

                http://dojotoolkit.org/community/licensing.shtml
*/

dojo.provide("dojo.uuid.LightweightGenerator");
dojo.uuid.LightweightGenerator = new function () {
        var HEX_RADIX = 16;
        function _generateRandomEightCharacterHexString() {
                var random32bitNumber = Math.floor((Math.random() % 1) * Math.pow(2, 32));
                var eightCharacterHexString = random32bitNumber.toString(HEX_RADIX);
                while (eightCharacterHexString.length < 8) {
                        eightCharacterHexString = "0" + eightCharacterHexString;
                }
                return eightCharacterHexString;
        }
        this.generate = function (returnType) {
                var hyphen = "-";
                var versionCodeForRandomlyGeneratedUuids = "4";
                var variantCodeForDCEUuids = "8";
                var a = _generateRandomEightCharacterHexString();
                var b = _generateRandomEightCharacterHexString();
                b = b.substring(0, 4) + hyphen + versionCodeForRandomlyGeneratedUuids + b.substring(5, 8);
                var c = _generateRandomEightCharacterHexString();
                c = variantCodeForDCEUuids + c.substring(1, 4) + hyphen + c.substring(4, 8);
                var d = _generateRandomEightCharacterHexString();
                var returnValue = a + hyphen + b + hyphen + c + d;
                returnValue = returnValue.toLowerCase();
                if (returnType && (returnType != String)) {
                        returnValue = new returnType(returnValue);
                }
                return returnValue;
        };
}();