Uuid.js
上传用户:kimgenplus
上传日期:2016-06-05
资源大小:20877k
文件大小:7k
- /*
- 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 (input) {
- this._uuidString = dojo.uuid.Uuid.NIL_UUID;
- if (input) {
- if (dojo.lang.isString(input)) {
- this._uuidString = input.toLowerCase();
- dojo.lang.assert(this.isValid());
- } else {
- if (dojo.lang.isObject(input) && input.generate) {
- var generator = input;
- this._uuidString = generator.generate();
- dojo.lang.assert(this.isValid());
- } else {
- 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());
- }
- }
- };
- 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 (uuidOne, uuidTwo) {
- var uuidStringOne = uuidOne.toString();
- var uuidStringTwo = uuidTwo.toString();
- if (uuidStringOne > uuidStringTwo) {
- return 1;
- }
- if (uuidStringOne < uuidStringTwo) {
- return -1;
- }
- return 0;
- };
- dojo.uuid.Uuid.setGenerator = function (generator) {
- dojo.lang.assert(!generator || (dojo.lang.isObject(generator) && generator.generate));
- dojo.uuid.Uuid._ourGenerator = generator;
- };
- dojo.uuid.Uuid.getGenerator = function () {
- return dojo.uuid.Uuid._ourGenerator;
- };
- dojo.uuid.Uuid.prototype.toString = function (format) {
- 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:
- dojo.lang.assert(false, "The toString() method of dojo.uuid.Uuid was passed a bogus format.");
- }
- } else {
- return this._uuidString;
- }
- };
- dojo.uuid.Uuid.prototype.compare = function (otherUuid) {
- return dojo.uuid.Uuid.compare(this, otherUuid);
- };
- dojo.uuid.Uuid.prototype.isEqual = function (otherUuid) {
- return (this.compare(otherUuid) == 0);
- };
- dojo.uuid.Uuid.prototype.isValid = function () {
- 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;
- }
- catch (e) {
- return false;
- }
- };
- dojo.uuid.Uuid.prototype.getVariant = function () {
- 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[0] = Variant.NCS;
- lookupTable[1] = Variant.NCS;
- lookupTable[2] = Variant.NCS;
- lookupTable[3] = Variant.NCS;
- lookupTable[4] = Variant.NCS;
- lookupTable[5] = Variant.NCS;
- lookupTable[6] = Variant.NCS;
- lookupTable[7] = Variant.NCS;
- lookupTable[8] = Variant.DCE;
- lookupTable[9] = Variant.DCE;
- lookupTable[10] = Variant.DCE;
- lookupTable[11] = Variant.DCE;
- lookupTable[12] = Variant.MICROSOFT;
- lookupTable[13] = Variant.MICROSOFT;
- lookupTable[14] = Variant.UNKNOWN;
- lookupTable[15] = Variant.UNKNOWN;
- dojo.uuid.Uuid._ourVariantLookupTable = lookupTable;
- }
- return dojo.uuid.Uuid._ourVariantLookupTable[variantNumber];
- };
- dojo.uuid.Uuid.prototype.getVersion = function () {
- 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);
- var versionCharacter = this._uuidString.charAt(14);
- this._versionNumber = parseInt(versionCharacter, dojo.uuid.Uuid.HEX_RADIX);
- }
- return this._versionNumber;
- };
- dojo.uuid.Uuid.prototype.getNode = function () {
- 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;
- };
- dojo.uuid.Uuid.prototype.getTimestamp = function (returnType) {
- 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();
- break;
- case "hex":
- if (!this._timestampAsHexString) {
- var arrayOfStrings = this._uuidString.split("-");
- var hexTimeLow = arrayOfStrings[0];
- var hexTimeMid = arrayOfStrings[1];
- var hexTimeHigh = arrayOfStrings[2];
- hexTimeHigh = hexTimeHigh.slice(1);
- this._timestampAsHexString = hexTimeHigh + hexTimeMid + hexTimeLow;
- dojo.lang.assert(this._timestampAsHexString.length == 15);
- }
- return this._timestampAsHexString;
- break;
- case null:
- case "date":
- case Date:
- 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 & 4095;
- hundredNanosecondIntervalsSince1582 <<= 16;
- hundredNanosecondIntervalsSince1582 += timeMid;
- hundredNanosecondIntervalsSince1582 *= 4294967296;
- hundredNanosecondIntervalsSince1582 += timeLow;
- var millisecondsSince1582 = hundredNanosecondIntervalsSince1582 / 10000;
- 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;
- break;
- default:
- dojo.lang.assert(false, "The getTimestamp() method dojo.uuid.Uuid was passed a bogus returnType: " + returnType);
- break;
- }
- };