| New file |
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| 0,0 → 1,56 |
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| if(!dojo._hasResource["dojox.uuid.generateRandomUuid"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. |
| dojo._hasResource["dojox.uuid.generateRandomUuid"] = true; |
| dojo.provide("dojox.uuid.generateRandomUuid"); |
| |
| dojox.uuid.generateRandomUuid = function(){ |
| // summary: |
| // This function generates random UUIDs, meaning "version 4" UUIDs. |
| // description: |
| // A typical generated value would be something like this: |
| // "3b12f1df-5232-4804-897e-917bf397618a" |
| // |
| // For more information about random UUIDs, see sections 4.4 and |
| // 4.5 of RFC 4122: http://tools.ietf.org/html/rfc4122#section-4.4 |
| // |
| // This generator function is designed to be small and fast, |
| // but not necessarily good. |
| // |
| // Small: This generator has a small footprint. Once comments are |
| // stripped, it's only about 25 lines of code, and it doesn't |
| // dojo.require() any other modules. |
| // |
| // Fast: This generator can generate lots of new UUIDs fairly quickly |
| // (at least, more quickly than the other dojo UUID generators). |
| // |
| // Not necessarily good: We use Math.random() as our source |
| // of randomness, which may or may not provide much randomness. |
| // examples: |
| // var string = dojox.uuid.generateRandomUuid(); |
| var HEX_RADIX = 16; |
| |
| function _generateRandomEightCharacterHexString(){ |
| // Make random32bitNumber be a randomly generated floating point number |
| // between 0 and (4,294,967,296 - 1), inclusive. |
| 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; // for example: "3B12F1DF" |
| } |
| |
| var hyphen = "-"; |
| var versionCodeForRandomlyGeneratedUuids = "4"; // 8 == binary2hex("0100") |
| var variantCodeForDCEUuids = "8"; // 8 == binary2hex("1000") |
| 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(); |
| return returnValue; // String |
| }; |
| |
| } |