| /* |
| 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.Uuid"); |
| dojo.require("dojo.lang.common"); |
| dojo.require("dojo.lang.assert"); |
| |
| dojo.uuid.Uuid = function(/* string || generator */ input) { |
| // summary: |
| // This is the constructor for the Uuid class. The Uuid class offers |
| // methods for inspecting existing UUIDs. |
| |
| // examples: |
| // var uuid; |
| // uuid = new dojo.uuid.Uuid("3b12f1df-5232-4804-897e-917bf397618a"); |
| // uuid = new dojo.uuid.Uuid(); // "00000000-0000-0000-0000-000000000000" |
| // uuid = new dojo.uuid.Uuid(dojo.uuid.RandomGenerator); |
| // uuid = new dojo.uuid.Uuid(dojo.uuid.TimeBasedGenerator); |
| // dojo.uuid.Uuid.setGenerator(dojo.uuid.RandomGenerator); |
| // uuid = new dojo.uuid.Uuid(); |
| // dojo.lang.assert(!uuid.isEqual(dojo.uuid.Uuid.NIL_UUID)); |
| this._uuidString = dojo.uuid.Uuid.NIL_UUID; |
| if (input) { |
| if (dojo.lang.isString(input)) { |
| // input: string? A 36-character string that conforms to the UUID spec. |
| this._uuidString = input.toLowerCase(); |
| dojo.lang.assert(this.isValid()); |
| } else { |
| if (dojo.lang.isObject(input) && input.generate) { |
| // input: generator A UUID generator, such as dojo.uuid.TimeBasedGenerator. |
| var generator = input; |
| this._uuidString = generator.generate(); |
| dojo.lang.assert(this.isValid()); |
| } else { |
| // we got passed something other than a string |
| dojo.lang.assert(false, "The dojo.uuid.Uuid() constructor must be initializated with a UUID string."); |
| } |
| } |
| } else { |
| var ourGenerator = dojo.uuid.Uuid.getGenerator(); |
| if (ourGenerator) { |
| this._uuidString = ourGenerator.generate(); |
| dojo.lang.assert(this.isValid()); |
| } |
| } |
| }; |
| |
| // ------------------------------------------------------------------- |
| // Public constants |
| // ------------------------------------------------------------------- |
| dojo.uuid.Uuid.NIL_UUID = "00000000-0000-0000-0000-000000000000"; |
| dojo.uuid.Uuid.Version = { |
| UNKNOWN: 0, |
| TIME_BASED: 1, |
| DCE_SECURITY: 2, |
| NAME_BASED_MD5: 3, |
| RANDOM: 4, |
| NAME_BASED_SHA1: 5 }; |
| dojo.uuid.Uuid.Variant = { |
| NCS: "0", |
| DCE: "10", |
| MICROSOFT: "110", |
| UNKNOWN: "111" }; |
| dojo.uuid.Uuid.HEX_RADIX = 16; |
| |
| dojo.uuid.Uuid.compare = function(/* dojo.uuid.Uuid */ uuidOne, /* dojo.uuid.Uuid */ uuidTwo) { |
| // summary: |
| // Given two UUIDs to compare, this method returns 0, 1, or -1. |
| // description: |
| // This method is designed to be used by sorting routines, like the |
| // JavaScript built-in Array sort() method. This implementation is |
| // intended to match the sample implementation in IETF RFC 4122: |
| // http://www.ietf.org/rfc/rfc4122.txt |
| // uuidOne: Any object that has toString() method that returns a 36-character string that conforms to the UUID spec. |
| // uuidTwo: Any object that has toString() method that returns a 36-character string that conforms to the UUID spec. |
| |
| // examples: |
| // var uuid; |
| // var generator = dojo.uuid.TimeBasedGenerator; |
| // var a = new dojo.uuid.Uuid(generator); |
| // var b = new dojo.uuid.Uuid(generator); |
| // var c = new dojo.uuid.Uuid(generator); |
| // var array = new Array(a, b, c); |
| // array.sort(dojo.uuid.Uuid.compare); |
| var uuidStringOne = uuidOne.toString(); |
| var uuidStringTwo = uuidTwo.toString(); |
| if (uuidStringOne > uuidStringTwo) return 1; // integer |
| if (uuidStringOne < uuidStringTwo) return -1; // integer |
| return 0; // integer (either 0, 1, or -1) |
| }; |
| |
| dojo.uuid.Uuid.setGenerator = function(/* generator? */ generator) { |
| // summary: |
| // Sets the default generator, which will be used by the |
| // "new dojo.uuid.Uuid()" constructor if no parameters |
| // are passed in. |
| // generator: A UUID generator, such as dojo.uuid.TimeBasedGenerator. |
| dojo.lang.assert(!generator || (dojo.lang.isObject(generator) && generator.generate)); |
| dojo.uuid.Uuid._ourGenerator = generator; |
| }; |
| |
| dojo.uuid.Uuid.getGenerator = function() { |
| // summary: |
| // Returns the default generator. See setGenerator(). |
| return dojo.uuid.Uuid._ourGenerator; // generator (A UUID generator, such as dojo.uuid.TimeBasedGenerator). |
| }; |
| |
| dojo.uuid.Uuid.prototype.toString = function(/* string? */format) { |
| // summary: |
| // By default this method returns a standard 36-character string representing |
| // the UUID, such as "3b12f1df-5232-4804-897e-917bf397618a". You can also |
| // pass in an optional format specifier to request the output in any of |
| // a half dozen slight variations. |
| // format: One of these strings: '{}', '()', '""', "''", 'urn', '!-' |
| |
| // examples: |
| // var uuid = new dojo.uuid.Uuid(dojo.uuid.TimeBasedGenerator); |
| // var s; |
| // s = uuid.toString(); // eb529fec-6498-11d7-b236-000629ba5445 |
| // s = uuid.toString('{}'); // {eb529fec-6498-11d7-b236-000629ba5445} |
| // s = uuid.toString('()'); // (eb529fec-6498-11d7-b236-000629ba5445) |
| // s = uuid.toString('""'); // "eb529fec-6498-11d7-b236-000629ba5445" |
| // s = uuid.toString("''"); // 'eb529fec-6498-11d7-b236-000629ba5445' |
| // s = uuid.toString('!-'); // eb529fec649811d7b236000629ba5445 |
| // s = uuid.toString('urn'); // urn:uuid:eb529fec-6498-11d7-b236-000629ba5445 |
| if (format) { |
| switch (format) { |
| case '{}': |
| return '{' + this._uuidString + '}'; |
| break; |
| case '()': |
| return '(' + this._uuidString + ')'; |
| break; |
| case '""': |
| return '"' + this._uuidString + '"'; |
| break; |
| case "''": |
| return "'" + this._uuidString + "'"; |
| break; |
| case 'urn': |
| return 'urn:uuid:' + this._uuidString; |
| break; |
| case '!-': |
| return this._uuidString.split('-').join(''); |
| break; |
| default: |
| // we got passed something other than what we expected |
| dojo.lang.assert(false, "The toString() method of dojo.uuid.Uuid was passed a bogus format."); |
| } |
| } else { |
| return this._uuidString; // string |
| } |
| }; |
| |
| dojo.uuid.Uuid.prototype.compare = function(/* dojo.uuid.Uuid */ otherUuid) { |
| // summary: |
| // Compares this UUID to another UUID, and returns 0, 1, or -1. |
| // description: |
| // This implementation is intended to match the sample implementation |
| // in IETF RFC 4122: http://www.ietf.org/rfc/rfc4122.txt |
| // otherUuid: Any object that has toString() method that returns a 36-character string that conforms to the UUID spec. |
| return dojo.uuid.Uuid.compare(this, otherUuid); // integer (either 0, 1, or -1) |
| }; |
| |
| dojo.uuid.Uuid.prototype.isEqual = function(/* dojo.uuid.Uuid */ otherUuid) { |
| // summary: |
| // Returns true if this UUID is equal to the otherUuid, or false otherwise. |
| // otherUuid: Any object that has toString() method that returns a 36-character string that conforms to the UUID spec. |
| return (this.compare(otherUuid) == 0); // boolean |
| }; |
| |
| dojo.uuid.Uuid.prototype.isValid = function() { |
| // summary: |
| // Returns true if the UUID was initialized with a valid value. |
| try { |
| dojo.lang.assertType(this._uuidString, String); |
| dojo.lang.assert(this._uuidString.length == 36); |
| dojo.lang.assert(this._uuidString == this._uuidString.toLowerCase()); |
| var arrayOfParts = this._uuidString.split("-"); |
| dojo.lang.assert(arrayOfParts.length == 5); |
| dojo.lang.assert(arrayOfParts[0].length == 8); |
| dojo.lang.assert(arrayOfParts[1].length == 4); |
| dojo.lang.assert(arrayOfParts[2].length == 4); |
| dojo.lang.assert(arrayOfParts[3].length == 4); |
| dojo.lang.assert(arrayOfParts[4].length == 12); |
| for (var i in arrayOfParts) { |
| var part = arrayOfParts[i]; |
| var integer = parseInt(part, dojo.uuid.Uuid.HEX_RADIX); |
| dojo.lang.assert(isFinite(integer)); |
| } |
| return true; // boolean |
| } catch (e) { |
| return false; // boolean |
| } |
| }; |
| |
| dojo.uuid.Uuid.prototype.getVariant = function() { |
| // summary: |
| // Returns a variant code that indicates what type of UUID this is. |
| // Returns one of the enumerated dojo.uuid.Uuid.Variant values. |
| |
| // example: |
| // var uuid = new dojo.uuid.Uuid("3b12f1df-5232-4804-897e-917bf397618a"); |
| // var variant = uuid.getVariant(); |
| // dojo.lang.assert(variant == dojo.uuid.Uuid.Variant.DCE); |
| // example: |
| // "3b12f1df-5232-4804-897e-917bf397618a" |
| // ^ |
| // | |
| // (variant "10__" == DCE) |
| var variantCharacter = this._uuidString.charAt(19); |
| var variantNumber = parseInt(variantCharacter, dojo.uuid.Uuid.HEX_RADIX); |
| dojo.lang.assert((variantNumber >= 0) && (variantNumber <= 16)); |
| |
| if (!dojo.uuid.Uuid._ourVariantLookupTable) { |
| var Variant = dojo.uuid.Uuid.Variant; |
| var lookupTable = []; |
| |
| lookupTable[0x0] = Variant.NCS; // 0000 |
| lookupTable[0x1] = Variant.NCS; // 0001 |
| lookupTable[0x2] = Variant.NCS; // 0010 |
| lookupTable[0x3] = Variant.NCS; // 0011 |
| |
| lookupTable[0x4] = Variant.NCS; // 0100 |
| lookupTable[0x5] = Variant.NCS; // 0101 |
| lookupTable[0x6] = Variant.NCS; // 0110 |
| lookupTable[0x7] = Variant.NCS; // 0111 |
| |
| lookupTable[0x8] = Variant.DCE; // 1000 |
| lookupTable[0x9] = Variant.DCE; // 1001 |
| lookupTable[0xA] = Variant.DCE; // 1010 |
| lookupTable[0xB] = Variant.DCE; // 1011 |
| |
| lookupTable[0xC] = Variant.MICROSOFT; // 1100 |
| lookupTable[0xD] = Variant.MICROSOFT; // 1101 |
| lookupTable[0xE] = Variant.UNKNOWN; // 1110 |
| lookupTable[0xF] = Variant.UNKNOWN; // 1111 |
| |
| dojo.uuid.Uuid._ourVariantLookupTable = lookupTable; |
| } |
| |
| return dojo.uuid.Uuid._ourVariantLookupTable[variantNumber]; // dojo.uuid.Uuid.Variant |
| }; |
| |
| dojo.uuid.Uuid.prototype.getVersion = function() { |
| // summary: |
| // Returns a version number that indicates what type of UUID this is. |
| // Returns one of the enumerated dojo.uuid.Uuid.Version values. |
| |
| // example: |
| // var uuid = new dojo.uuid.Uuid("b4308fb0-86cd-11da-a72b-0800200c9a66"); |
| // var version = uuid.getVersion(); |
| // dojo.lang.assert(version == dojo.uuid.Uuid.Version.TIME_BASED); |
| // exceptions: |
| // Throws an Error if this is not a DCE Variant UUID. |
| if (!this._versionNumber) { |
| var errorMessage = "Called getVersion() on a dojo.uuid.Uuid that was not a DCE Variant UUID."; |
| dojo.lang.assert(this.getVariant() == dojo.uuid.Uuid.Variant.DCE, errorMessage); |
| |
| // "b4308fb0-86cd-11da-a72b-0800200c9a66" |
| // ^ |
| // | |
| // (version 1 == TIME_BASED) |
| var versionCharacter = this._uuidString.charAt(14); |
| this._versionNumber = parseInt(versionCharacter, dojo.uuid.Uuid.HEX_RADIX); |
| } |
| return this._versionNumber; // dojo.uuid.Uuid.Version |
| }; |
| |
| dojo.uuid.Uuid.prototype.getNode = function() { |
| // summary: |
| // If this is a version 1 UUID (a time-based UUID), getNode() returns a |
| // 12-character string with the "node" or "pseudonode" portion of the UUID, |
| // which is the rightmost 12 characters. |
| |
| // exceptions: |
| // Throws an Error if this is not a version 1 UUID. |
| if (!this._nodeString) { |
| var errorMessage = "Called getNode() on a dojo.uuid.Uuid that was not a TIME_BASED UUID."; |
| dojo.lang.assert(this.getVersion() == dojo.uuid.Uuid.Version.TIME_BASED, errorMessage); |
| |
| var arrayOfStrings = this._uuidString.split('-'); |
| this._nodeString = arrayOfStrings[4]; |
| } |
| return this._nodeString; // String (a 12-character string, which will look something like "917bf397618a") |
| }; |
| |
| dojo.uuid.Uuid.prototype.getTimestamp = function(/* misc. */ returnType) { |
| // summary: |
| // If this is a version 1 UUID (a time-based UUID), this method returns |
| // the timestamp value encoded in the UUID. The caller can ask for the |
| // timestamp to be returned either as a JavaScript Date object or as a |
| // 15-character string of hex digits. |
| // returnType: Any of these five values: "string", String, "hex", "date", Date |
| |
| // returns: |
| // Returns the timestamp value as a JavaScript Date object or a 15-character string of hex digits. |
| // examples: |
| // var uuid = new dojo.uuid.Uuid("b4308fb0-86cd-11da-a72b-0800200c9a66"); |
| // var date, string, hexString; |
| // date = uuid.getTimestamp(); // returns a JavaScript Date |
| // date = uuid.getTimestamp(Date); // |
| // string = uuid.getTimestamp(String); // "Mon, 16 Jan 2006 20:21:41 GMT" |
| // hexString = uuid.getTimestamp("hex"); // "1da86cdb4308fb0" |
| // exceptions: |
| // Throws an Error if this is not a version 1 UUID. |
| var errorMessage = "Called getTimestamp() on a dojo.uuid.Uuid that was not a TIME_BASED UUID."; |
| dojo.lang.assert(this.getVersion() == dojo.uuid.Uuid.Version.TIME_BASED, errorMessage); |
| |
| if (!returnType) {returnType = null}; |
| switch (returnType) { |
| case "string": |
| case String: |
| return this.getTimestamp(Date).toUTCString(); // String (e.g. "Mon, 16 Jan 2006 20:21:41 GMT") |
| break; |
| case "hex": |
| // Return a 15-character string of hex digits containing the |
| // timestamp for this UUID, with the high-order bits first. |
| if (!this._timestampAsHexString) { |
| var arrayOfStrings = this._uuidString.split('-'); |
| var hexTimeLow = arrayOfStrings[0]; |
| var hexTimeMid = arrayOfStrings[1]; |
| var hexTimeHigh = arrayOfStrings[2]; |
| |
| // Chop off the leading "1" character, which is the UUID |
| // version number for time-based UUIDs. |
| hexTimeHigh = hexTimeHigh.slice(1); |
| |
| this._timestampAsHexString = hexTimeHigh + hexTimeMid + hexTimeLow; |
| dojo.lang.assert(this._timestampAsHexString.length == 15); |
| } |
| return this._timestampAsHexString; // String (e.g. "1da86cdb4308fb0") |
| break; |
| case null: // no returnType was specified, so default to Date |
| case "date": |
| case Date: |
| // Return a JavaScript Date object. |
| if (!this._timestampAsDate) { |
| var GREGORIAN_CHANGE_OFFSET_IN_HOURS = 3394248; |
| |
| var arrayOfParts = this._uuidString.split('-'); |
| var timeLow = parseInt(arrayOfParts[0], dojo.uuid.Uuid.HEX_RADIX); |
| var timeMid = parseInt(arrayOfParts[1], dojo.uuid.Uuid.HEX_RADIX); |
| var timeHigh = parseInt(arrayOfParts[2], dojo.uuid.Uuid.HEX_RADIX); |
| var hundredNanosecondIntervalsSince1582 = timeHigh & 0x0FFF; |
| hundredNanosecondIntervalsSince1582 <<= 16; |
| hundredNanosecondIntervalsSince1582 += timeMid; |
| // What we really want to do next is shift left 32 bits, but the |
| // result will be too big to fit in an int, so we'll multiply by 2^32, |
| // and the result will be a floating point approximation. |
| hundredNanosecondIntervalsSince1582 *= 0x100000000; |
| hundredNanosecondIntervalsSince1582 += timeLow; |
| var millisecondsSince1582 = hundredNanosecondIntervalsSince1582 / 10000; |
| |
| // Again, this will be a floating point approximation. |
| // We can make things exact later if we need to. |
| var secondsPerHour = 60 * 60; |
| var hoursBetween1582and1970 = GREGORIAN_CHANGE_OFFSET_IN_HOURS; |
| var secondsBetween1582and1970 = hoursBetween1582and1970 * secondsPerHour; |
| var millisecondsBetween1582and1970 = secondsBetween1582and1970 * 1000; |
| var millisecondsSince1970 = millisecondsSince1582 - millisecondsBetween1582and1970; |
| |
| this._timestampAsDate = new Date(millisecondsSince1970); |
| } |
| return this._timestampAsDate; // Date |
| break; |
| default: |
| // we got passed something other than a valid returnType |
| dojo.lang.assert(false, "The getTimestamp() method dojo.uuid.Uuid was passed a bogus returnType: " + returnType); |
| break; |
| } |
| }; |