| // ----- |
| // The `timezoneJS.Date` object gives you full-blown timezone support, independent from the timezone set on the end-user's machine running the browser. It uses the Olson zoneinfo files for its timezone data. |
| // |
| // The constructor function and setter methods use proxy JavaScript Date objects behind the scenes, so you can use strings like '10/22/2006' with the constructor. You also get the same sensible wraparound behavior with numeric parameters (like setting a value of 14 for the month wraps around to the next March). |
| // |
| // The other significant difference from the built-in JavaScript Date is that `timezoneJS.Date` also has named properties that store the values of year, month, date, etc., so it can be directly serialized to JSON and used for data transfer. |
| |
| /* |
| * Copyright 2010 Matthew Eernisse (mde@fleegix.org) |
| * and Open Source Applications Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| * Credits: Ideas included from incomplete JS implementation of Olson |
| * parser, "XMLDAte" by Philippe Goetz (philippe.goetz@wanadoo.fr) |
| * |
| * Contributions: |
| * Jan Niehusmann |
| * Ricky Romero |
| * Preston Hunt (prestonhunt@gmail.com) |
| * Dov. B Katz (dov.katz@morganstanley.com) |
| * Peter Bergström (pbergstr@mac.com) |
| * Long Ho |
| */ |
| (function () { |
| // Standard initialization stuff to make sure the library is |
| // usable on both client and server (node) side. |
| |
| var root = this; |
| |
| var timezoneJS; |
| if (typeof exports !== 'undefined') { |
| timezoneJS = exports; |
| } else { |
| timezoneJS = root.timezoneJS = {}; |
| } |
| |
| timezoneJS.VERSION = '1.0.0'; |
| |
| // Grab the ajax library from global context. |
| // This can be jQuery, Zepto or fleegix. |
| // You can also specify your own transport mechanism by declaring |
| // `timezoneJS.timezone.transport` to a `function`. More details will follow |
| var $ = root.$ || root.jQuery || root.Zepto |
| , fleegix = root.fleegix |
| // Declare constant list of days and months. Unfortunately this doesn't leave room for i18n due to the Olson data being in English itself |
| , DAYS = timezoneJS.Days = ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'] |
| , MONTHS = timezoneJS.Months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'] |
| , SHORT_MONTHS = {} |
| , SHORT_DAYS = {} |
| , EXACT_DATE_TIME = {} |
| , TZ_REGEXP = new RegExp('^[a-zA-Z]+/'); |
| |
| //`{ "Jan": 0, "Feb": 1, "Mar": 2, "Apr": 3, "May": 4, "Jun": 5, "Jul": 6, "Aug": 7, "Sep": 8, "Oct": 9, "Nov": 10, "Dec": 11 }` |
| for (var i = 0; i < MONTHS.length; i++) { |
| SHORT_MONTHS[MONTHS[i].substr(0, 3)] = i; |
| } |
| |
| //`{ "Sun": 0, "Mon": 1, "Tue": 2, "Wed": 3, "Thu": 4, "Fri": 5, "Sat": 6 }` |
| for (i = 0; i < DAYS.length; i++) { |
| SHORT_DAYS[DAYS[i].substr(0, 3)] = i; |
| } |
| |
| |
| //Handle array indexOf in IE |
| if (!Array.prototype.indexOf) { |
| Array.prototype.indexOf = function (el) { |
| for (var i = 0; i < this.length; i++ ) { |
| if (el === this[i]) return i; |
| } |
| return -1; |
| } |
| } |
| |
| // Format a number to the length = digits. For ex: |
| // |
| // `_fixWidth(2, 2) = '02'` |
| // |
| // `_fixWidth(1998, 2) = '98'` |
| // |
| // This is used to pad numbers in converting date to string in ISO standard. |
| var _fixWidth = function (number, digits) { |
| if (typeof number !== "number") { throw "not a number: " + number; } |
| var s = number.toString(); |
| if (number.length > digits) { |
| return number.substr(number.length - digits, number.length); |
| } |
| while (s.length < digits) { |
| s = '0' + s; |
| } |
| return s; |
| }; |
| |
| // Abstraction layer for different transport layers, including fleegix/jQuery/Zepto |
| // |
| // Object `opts` include |
| // |
| // - `url`: url to ajax query |
| // |
| // - `async`: true for asynchronous, false otherwise. If false, return value will be response from URL. This is true by default |
| // |
| // - `success`: success callback function |
| // |
| // - `error`: error callback function |
| // Returns response from URL if async is false, otherwise the AJAX request object itself |
| var _transport = function (opts) { |
| if ((!fleegix || typeof fleegix.xhr === 'undefined') && (!$ || typeof $.ajax === 'undefined')) { |
| throw new Error('Please use the Fleegix.js XHR module, jQuery ajax, Zepto ajax, or define your own transport mechanism for downloading zone files.'); |
| } |
| if (!opts) return; |
| if (!opts.url) throw new Error ('URL must be specified'); |
| if (!('async' in opts)) opts.async = true; |
| if (!opts.async) { |
| return fleegix && fleegix.xhr |
| ? fleegix.xhr.doReq({ url: opts.url, async: false }) |
| : $.ajax({ url : opts.url, async : false }).responseText; |
| } |
| return fleegix && fleegix.xhr |
| ? fleegix.xhr.send({ |
| url : opts.url, |
| method : 'get', |
| handleSuccess : opts.success, |
| handleErr : opts.error |
| }) |
| : $.ajax({ |
| url : opts.url, |
| dataType: 'text', |
| method : 'GET', |
| error : opts.error, |
| success : opts.success |
| }); |
| }; |
| |
| // Constructor, which is similar to that of the native Date object itself |
| timezoneJS.Date = function () { |
| var args = Array.prototype.slice.apply(arguments) |
| , dt = null |
| , tz = null |
| , arr = []; |
| |
| |
| //We support several different constructors, including all the ones from `Date` object |
| // with a timezone string at the end. |
| // |
| //- `[tz]`: Returns object with time in `tz` specified. |
| // |
| // - `utcMillis`, `[tz]`: Return object with UTC time = `utcMillis`, in `tz`. |
| // |
| // - `Date`, `[tz]`: Returns object with UTC time = `Date.getTime()`, in `tz`. |
| // |
| // - `year, month, [date,] [hours,] [minutes,] [seconds,] [millis,] [tz]: Same as `Date` object |
| // with tz. |
| // |
| // - `Array`: Can be any combo of the above. |
| // |
| //If 1st argument is an array, we can use it as a list of arguments itself |
| if (Object.prototype.toString.call(args[0]) === '[object Array]') { |
| args = args[0]; |
| } |
| if (typeof args[args.length - 1] === 'string' && TZ_REGEXP.test(args[args.length - 1])) { |
| tz = args.pop(); |
| } |
| switch (args.length) { |
| case 0: |
| dt = new Date(); |
| break; |
| case 1: |
| dt = new Date(args[0]); |
| break; |
| default: |
| for (var i = 0; i < 7; i++) { |
| arr[i] = args[i] || 0; |
| } |
| dt = new Date(arr[0], arr[1], arr[2], arr[3], arr[4], arr[5], arr[6]); |
| break; |
| } |
| |
| this._useCache = false; |
| this._tzInfo = {}; |
| this._day = 0; |
| this.year = 0; |
| this.month = 0; |
| this.date = 0; |
| this.hours = 0; |
| this.minutes = 0; |
| this.seconds = 0; |
| this.milliseconds = 0; |
| this.timezone = tz || null; |
| //Tricky part: |
| // For the cases where there are 1/2 arguments: `timezoneJS.Date(millis, [tz])` and `timezoneJS.Date(Date, [tz])`. The |
| // Date `dt` created should be in UTC. Thus the way I detect such cases is to determine if `arr` is not populated & `tz` |
| // is specified. Because if `tz` is not specified, `dt` can be in local time. |
| if (arr.length) { |
| this.setFromDateObjProxy(dt); |
| } else { |
| this.setFromTimeProxy(dt.getTime(), tz); |
| } |
| }; |
| |
| // Implements most of the native Date object |
| timezoneJS.Date.prototype = { |
| getDate: function () { return this.date; }, |
| getDay: function () { return this._day; }, |
| getFullYear: function () { return this.year; }, |
| getMonth: function () { return this.month; }, |
| getYear: function () { return this.year; }, |
| getHours: function () { return this.hours; }, |
| getMilliseconds: function () { return this.milliseconds; }, |
| getMinutes: function () { return this.minutes; }, |
| getSeconds: function () { return this.seconds; }, |
| getUTCDate: function () { return this.getUTCDateProxy().getUTCDate(); }, |
| getUTCDay: function () { return this.getUTCDateProxy().getUTCDay(); }, |
| getUTCFullYear: function () { return this.getUTCDateProxy().getUTCFullYear(); }, |
| getUTCHours: function () { return this.getUTCDateProxy().getUTCHours(); }, |
| getUTCMilliseconds: function () { return this.getUTCDateProxy().getUTCMilliseconds(); }, |
| getUTCMinutes: function () { return this.getUTCDateProxy().getUTCMinutes(); }, |
| getUTCMonth: function () { return this.getUTCDateProxy().getUTCMonth(); }, |
| getUTCSeconds: function () { return this.getUTCDateProxy().getUTCSeconds(); }, |
| // Time adjusted to user-specified timezone |
| getTime: function () { |
| return this._timeProxy + (this.getTimezoneOffset() * 60 * 1000); |
| }, |
| getTimezone: function () { return this.timezone; }, |
| getTimezoneOffset: function () { return this.getTimezoneInfo().tzOffset; }, |
| getTimezoneAbbreviation: function () { return this.getTimezoneInfo().tzAbbr; }, |
| getTimezoneInfo: function () { |
| if (this._useCache) return this._tzInfo; |
| var res; |
| // If timezone is specified, get the correct timezone info based on the Date given |
| if (this.timezone) { |
| res = this.timezone === 'Etc/UTC' || this.timezone === 'Etc/GMT' |
| ? { tzOffset: 0, tzAbbr: 'UTC' } |
| : timezoneJS.timezone.getTzInfo(this._timeProxy, this.timezone); |
| } |
| // If no timezone was specified, use the local browser offset |
| else { |
| res = { tzOffset: this.getLocalOffset(), tzAbbr: null }; |
| } |
| this._tzInfo = res; |
| this._useCache = true; |
| return res |
| }, |
| getUTCDateProxy: function () { |
| var dt = new Date(this._timeProxy); |
| dt.setUTCMinutes(dt.getUTCMinutes() + this.getTimezoneOffset()); |
| return dt; |
| }, |
| setDate: function (n) { this.setAttribute('date', n); }, |
| setFullYear: function (year, month, date) { |
| if (date !== undefined) { this.setAttribute('date', 1); } |
| this.setAttribute('year', year); |
| if (month !== undefined) { this.setAttribute('month', month); } |
| if (date !== undefined) { this.setAttribute('date', date); } |
| }, |
| setMonth: function (n) { this.setAttribute('month', n); }, |
| setYear: function (n) { this.setUTCAttribute('year', n); }, |
| setHours: function (hours, minutes, seconds, milliseconds) { |
| this.setAttribute('hours', hours); |
| if (minutes) { this.setAttribute('minutes', minutes); } |
| if (seconds) { this.setAttribute('seconds', seconds); } |
| if (milliseconds) { this.setAttribute('milliseconds', milliseconds); } |
| }, |
| setMilliseconds: function (n) { this.setAttribute('milliseconds', n); }, |
| setMinutes: function (n) { this.setAttribute('minutes', n); }, |
| setSeconds: function (n) { this.setAttribute('seconds', n); }, |
| setTime: function (n) { |
| if (isNaN(n)) { throw new Error('Units must be a number.'); } |
| this.setFromTimeProxy(n, this.timezone); |
| }, |
| setUTCDate: function (n) { this.setUTCAttribute('date', n); }, |
| setUTCFullYear: function (year, month, date) { |
| if (date !== undefined) { this.setUTCAttribute('date', 1); } |
| this.setUTCAttribute('year', year); |
| if (month !== undefined) { this.setUTCAttribute('month', month); } |
| if (date !== undefined) { this.setUTCAttribute('date', date); } |
| }, |
| setUTCHours: function (hours, minutes, seconds, milliseconds) { |
| this.setUTCAttribute('hours', hours); |
| if (minutes) { this.setUTCAttribute('minutes', minutes); } |
| if (seconds) { this.setUTCAttribute('seconds', seconds); } |
| if (milliseconds) { this.setUTCAttribute('milliseconds', milliseconds); } |
| }, |
| setUTCMilliseconds: function (n) { this.setUTCAttribute('milliseconds', n); }, |
| setUTCMinutes: function (n) { this.setUTCAttribute('minutes', n); }, |
| setUTCMonth: function (n) { this.setUTCAttribute('month', n); }, |
| setUTCSeconds: function (n) { this.setUTCAttribute('seconds', n); }, |
| setFromDateObjProxy: function (dt) { |
| this.year = dt.getFullYear(); |
| this.month = dt.getMonth(); |
| this.date = dt.getDate(); |
| this.hours = dt.getHours(); |
| this.minutes = dt.getMinutes(); |
| this.seconds = dt.getSeconds(); |
| this.milliseconds = dt.getMilliseconds(); |
| this._day = dt.getDay(); |
| this._dateProxy = dt; |
| this._timeProxy = Date.UTC(this.year, this.month, this.date, this.hours, this.minutes, this.seconds, this.milliseconds); |
| this._useCache = false; |
| }, |
| setFromTimeProxy: function (utcMillis, tz) { |
| var dt = new Date(utcMillis); |
| var tzOffset; |
| tzOffset = tz ? timezoneJS.timezone.getTzInfo(dt, tz).tzOffset : dt.getTimezoneOffset(); |
| dt.setTime(utcMillis + (dt.getTimezoneOffset() - tzOffset) * 60000); |
| this.setFromDateObjProxy(dt); |
| }, |
| setAttribute: function (unit, n) { |
| if (isNaN(n)) { throw new Error('Units must be a number.'); } |
| var dt = this._dateProxy; |
| var meth = unit === 'year' ? 'FullYear' : unit.substr(0, 1).toUpperCase() + unit.substr(1); |
| dt['set' + meth](n); |
| this.setFromDateObjProxy(dt); |
| }, |
| setUTCAttribute: function (unit, n) { |
| if (isNaN(n)) { throw new Error('Units must be a number.'); } |
| var meth = unit === 'year' ? 'FullYear' : unit.substr(0, 1).toUpperCase() + unit.substr(1); |
| var dt = this.getUTCDateProxy(); |
| dt['setUTC' + meth](n); |
| dt.setUTCMinutes(dt.getUTCMinutes() - this.getTimezoneOffset()); |
| this.setFromTimeProxy(dt.getTime() + this.getTimezoneOffset() * 60000, this.timezone); |
| }, |
| setTimezone: function (tz) { |
| var previousOffset = this.getTimezoneInfo().tzOffset; |
| this.timezone = tz; |
| this._useCache = false; |
| // Set UTC minutes offsets by the delta of the two timezones |
| this.setUTCMinutes(this.getUTCMinutes() - this.getTimezoneInfo().tzOffset + previousOffset); |
| }, |
| removeTimezone: function () { |
| this.timezone = null; |
| this._useCache = false; |
| }, |
| valueOf: function () { return this.getTime(); }, |
| clone: function () { |
| return this.timezone ? new timezoneJS.Date(this.getTime(), this.timezone) : new timezoneJS.Date(this.getTime()); |
| }, |
| toGMTString: function () { return this.toString('EEE, dd MMM yyyy HH:mm:ss Z', 'Etc/GMT'); }, |
| toLocaleString: function () {}, |
| toLocaleDateString: function () {}, |
| toLocaleTimeString: function () {}, |
| toSource: function () {}, |
| toISOString: function () { return this.toString('yyyy-MM-ddTHH:mm:ss.SSS', 'Etc/UTC') + 'Z'; }, |
| toJSON: function () { return this.toISOString(); }, |
| // Allows different format following ISO8601 format: |
| toString: function (format, tz) { |
| // Default format is the same as toISOString |
| if (!format) format = 'yyyy-MM-dd HH:mm:ss'; |
| var result = format; |
| var tzInfo = tz ? timezoneJS.timezone.getTzInfo(this.getTime(), tz) : this.getTimezoneInfo(); |
| var _this = this; |
| // If timezone is specified, get a clone of the current Date object and modify it |
| if (tz) { |
| _this = this.clone(); |
| _this.setTimezone(tz); |
| } |
| var hours = _this.getHours(); |
| return result |
| // fix the same characters in Month names |
| .replace(/a+/g, function () { return 'k'; }) |
| // `y`: year |
| .replace(/y+/g, function (token) { return _fixWidth(_this.getFullYear(), token.length); }) |
| // `d`: date |
| .replace(/d+/g, function (token) { return _fixWidth(_this.getDate(), token.length); }) |
| // `m`: minute |
| .replace(/m+/g, function (token) { return _fixWidth(_this.getMinutes(), token.length); }) |
| // `s`: second |
| .replace(/s+/g, function (token) { return _fixWidth(_this.getSeconds(), token.length); }) |
| // `S`: millisecond |
| .replace(/S+/g, function (token) { return _fixWidth(_this.getMilliseconds(), token.length); }) |
| // `M`: month. Note: `MM` will be the numeric representation (e.g February is 02) but `MMM` will be text representation (e.g February is Feb) |
| .replace(/M+/g, function (token) { |
| var _month = _this.getMonth(), |
| _len = token.length; |
| if (_len > 3) { |
| return timezoneJS.Months[_month]; |
| } else if (_len > 2) { |
| return timezoneJS.Months[_month].substring(0, _len); |
| } |
| return _fixWidth(_month + 1, _len); |
| }) |
| // `k`: AM/PM |
| .replace(/k+/g, function () { |
| if (hours >= 12) { |
| if (hours > 12) { |
| hours -= 12; |
| } |
| return 'PM'; |
| } |
| return 'AM'; |
| }) |
| // `H`: hour |
| .replace(/H+/g, function (token) { return _fixWidth(hours, token.length); }) |
| // `E`: day |
| .replace(/E+/g, function (token) { return DAYS[_this.getDay()].substring(0, token.length); }) |
| // `Z`: timezone abbreviation |
| .replace(/Z+/gi, function () { return tzInfo.tzAbbr; }); |
| }, |
| toUTCString: function () { return this.toGMTString(); }, |
| civilToJulianDayNumber: function (y, m, d) { |
| var a; |
| // Adjust for zero-based JS-style array |
| m++; |
| if (m > 12) { |
| a = parseInt(m/12, 10); |
| m = m % 12; |
| y += a; |
| } |
| if (m <= 2) { |
| y -= 1; |
| m += 12; |
| } |
| a = Math.floor(y / 100); |
| var b = 2 - a + Math.floor(a / 4) |
| , jDt = Math.floor(365.25 * (y + 4716)) + Math.floor(30.6001 * (m + 1)) + d + b - 1524; |
| return jDt; |
| }, |
| getLocalOffset: function () { |
| return this._dateProxy.getTimezoneOffset(); |
| } |
| }; |
| |
| |
| timezoneJS.timezone = new function () { |
| var _this = this |
| , regionMap = {'Etc':'etcetera','EST':'northamerica','MST':'northamerica','HST':'northamerica','EST5EDT':'northamerica','CST6CDT':'northamerica','MST7MDT':'northamerica','PST8PDT':'northamerica','America':'northamerica','Pacific':'australasia','Atlantic':'europe','Africa':'africa','Indian':'africa','Antarctica':'antarctica','Asia':'asia','Australia':'australasia','Europe':'europe','WET':'europe','CET':'europe','MET':'europe','EET':'europe'} |
| , regionExceptions = {'Pacific/Honolulu':'northamerica','Atlantic/Bermuda':'northamerica','Atlantic/Cape_Verde':'africa','Atlantic/St_Helena':'africa','Indian/Kerguelen':'antarctica','Indian/Chagos':'asia','Indian/Maldives':'asia','Indian/Christmas':'australasia','Indian/Cocos':'australasia','America/Danmarkshavn':'europe','America/Scoresbysund':'europe','America/Godthab':'europe','America/Thule':'europe','Asia/Yekaterinburg':'europe','Asia/Omsk':'europe','Asia/Novosibirsk':'europe','Asia/Krasnoyarsk':'europe','Asia/Irkutsk':'europe','Asia/Yakutsk':'europe','Asia/Vladivostok':'europe','Asia/Sakhalin':'europe','Asia/Magadan':'europe','Asia/Kamchatka':'europe','Asia/Anadyr':'europe','Africa/Ceuta':'europe','America/Argentina/Buenos_Aires':'southamerica','America/Argentina/Cordoba':'southamerica','America/Argentina/Tucuman':'southamerica','America/Argentina/La_Rioja':'southamerica','America/Argentina/San_Juan':'southamerica','America/Argentina/Jujuy':'southamerica','America/Argentina/Catamarca':'southamerica','America/Argentina/Mendoza':'southamerica','America/Argentina/Rio_Gallegos':'southamerica','America/Argentina/Ushuaia':'southamerica','America/Aruba':'southamerica','America/La_Paz':'southamerica','America/Noronha':'southamerica','America/Belem':'southamerica','America/Fortaleza':'southamerica','America/Recife':'southamerica','America/Araguaina':'southamerica','America/Maceio':'southamerica','America/Bahia':'southamerica','America/Sao_Paulo':'southamerica','America/Campo_Grande':'southamerica','America/Cuiaba':'southamerica','America/Porto_Velho':'southamerica','America/Boa_Vista':'southamerica','America/Manaus':'southamerica','America/Eirunepe':'southamerica','America/Rio_Branco':'southamerica','America/Santiago':'southamerica','Pacific/Easter':'southamerica','America/Bogota':'southamerica','America/Curacao':'southamerica','America/Guayaquil':'southamerica','Pacific/Galapagos':'southamerica','Atlantic/Stanley':'southamerica','America/Cayenne':'southamerica','America/Guyana':'southamerica','America/Asuncion':'southamerica','America/Lima':'southamerica','Atlantic/South_Georgia':'southamerica','America/Paramaribo':'southamerica','America/Port_of_Spain':'southamerica','America/Montevideo':'southamerica','America/Caracas':'southamerica'}; |
| function invalidTZError(t) { throw new Error('Timezone "' + t + '" is either incorrect, or not loaded in the timezone registry.'); } |
| function builtInLoadZoneFile(fileName, opts) { |
| var url = _this.zoneFileBasePath + '/' + fileName; |
| return !opts || !opts.async |
| ? _this.parseZones(_this.transport({ url : url, async : false })) |
| : _this.transport({ |
| async: true, |
| url : url, |
| success : function (str) { |
| if (_this.parseZones(str) && typeof opts.callback === 'function') { |
| opts.callback(); |
| } |
| return true; |
| }, |
| error : function () { |
| throw new Error('Error retrieving "' + url + '" zoneinfo files'); |
| } |
| }); |
| } |
| function getRegionForTimezone(tz) { |
| var exc = regionExceptions[tz] |
| , reg |
| , ret; |
| if (exc) return exc; |
| reg = tz.split('/')[0]; |
| ret = regionMap[reg]; |
| // If there's nothing listed in the main regions for this TZ, check the 'backward' links |
| if (ret) return ret; |
| var link = _this.zones[tz]; |
| if (typeof link === 'string') { |
| return getRegionForTimezone(link); |
| } |
| // Backward-compat file hasn't loaded yet, try looking in there |
| if (!_this.loadedZones.backward) { |
| // This is for obvious legacy zones (e.g., Iceland) that don't even have a prefix like "America/" that look like normal zones |
| _this.loadZoneFile('backward'); |
| return getRegionForTimezone(tz); |
| } |
| invalidTZError(tz); |
| } |
| function parseTimeString(str) { |
| var pat = /(\d+)(?::0*(\d*))?(?::0*(\d*))?([wsugz])?$/; |
| var hms = str.match(pat); |
| hms[1] = parseInt(hms[1], 10); |
| hms[2] = hms[2] ? parseInt(hms[2], 10) : 0; |
| hms[3] = hms[3] ? parseInt(hms[3], 10) : 0; |
| |
| return hms; |
| } |
| function processZone(z) { |
| if (!z[3]) { return; } |
| var yea = parseInt(z[3], 10); |
| var mon = 11; |
| var dat = 31; |
| if (z[4]) { |
| mon = SHORT_MONTHS[z[4].substr(0, 3)]; |
| dat = parseInt(z[5], 10) || 1; |
| } |
| var string = z[6] ? z[6] : '00:00:00' |
| , t = parseTimeString(string); |
| return [yea, mon, dat, t[1], t[2], t[3]]; |
| } |
| function getZone(dt, tz) { |
| var utcMillis = typeof dt === 'number' ? dt : new Date(dt).getTime(); |
| var t = tz; |
| var zoneList = _this.zones[t]; |
| // Follow links to get to an actual zone |
| while (typeof zoneList === "string") { |
| t = zoneList; |
| zoneList = _this.zones[t]; |
| } |
| if (!zoneList) { |
| // Backward-compat file hasn't loaded yet, try looking in there |
| if (!_this.loadedZones.backward) { |
| //This is for backward entries like "America/Fort_Wayne" that |
| // getRegionForTimezone *thinks* it has a region file and zone |
| // for (e.g., America => 'northamerica'), but in reality it's a |
| // legacy zone we need the backward file for. |
| _this.loadZoneFile('backward'); |
| return getZone(dt, tz); |
| } |
| invalidTZError(t); |
| } |
| if (zoneList.length === 0) { |
| throw new Error('No Zone found for "' + tz + '" on ' + dt); |
| } |
| //Do backwards lookup since most use cases deal with newer dates. |
| for (var i = zoneList.length - 1; i >= 0; i--) { |
| var z = zoneList[i]; |
| if (z[3] && utcMillis > z[3]) break; |
| } |
| return zoneList[i+1]; |
| } |
| function getBasicOffset(time) { |
| var off = parseTimeString(time) |
| , adj = time.indexOf('-') === 0 ? -1 : 1; |
| off = adj * (((off[1] * 60 + off[2]) * 60 + off[3]) * 1000); |
| return off/60/1000; |
| } |
| |
| //if isUTC is true, date is given in UTC, otherwise it's given |
| // in local time (ie. date.getUTC*() returns local time components) |
| function getRule(dt, zone, isUTC) { |
| var date = typeof dt === 'number' ? new Date(dt) : dt; |
| var ruleset = zone[1]; |
| var basicOffset = zone[0]; |
| |
| //Convert a date to UTC. Depending on the 'type' parameter, the date |
| // parameter may be: |
| // |
| // - `u`, `g`, `z`: already UTC (no adjustment). |
| // |
| // - `s`: standard time (adjust for time zone offset but not for DST) |
| // |
| // - `w`: wall clock time (adjust for both time zone and DST offset). |
| // |
| // DST adjustment is done using the rule given as third argument. |
| var convertDateToUTC = function (date, type, rule) { |
| var offset = 0; |
| |
| if (type === 'u' || type === 'g' || type === 'z') { // UTC |
| offset = 0; |
| } else if (type === 's') { // Standard Time |
| offset = basicOffset; |
| } else if (type === 'w' || !type) { // Wall Clock Time |
| offset = getAdjustedOffset(basicOffset, rule); |
| } else { |
| throw("unknown type " + type); |
| } |
| offset *= 60 * 1000; // to millis |
| |
| return new Date(date.getTime() + offset); |
| }; |
| |
| //Step 1: Find applicable rules for this year. |
| // |
| //Step 2: Sort the rules by effective date. |
| // |
| //Step 3: Check requested date to see if a rule has yet taken effect this year. If not, |
| // |
| //Step 4: Get the rules for the previous year. If there isn't an applicable rule for last year, then |
| // there probably is no current time offset since they seem to explicitly turn off the offset |
| // when someone stops observing DST. |
| // |
| // FIXME if this is not the case and we'll walk all the way back (ugh). |
| // |
| //Step 5: Sort the rules by effective date. |
| //Step 6: Apply the most recent rule before the current time. |
| var convertRuleToExactDateAndTime = function (yearAndRule, prevRule) { |
| var year = yearAndRule[0] |
| , rule = yearAndRule[1]; |
| // Assume that the rule applies to the year of the given date. |
| |
| var hms = rule[5]; |
| var effectiveDate; |
| |
| if (!EXACT_DATE_TIME[year]) |
| EXACT_DATE_TIME[year] = {}; |
| |
| // Result for given parameters is already stored |
| if (EXACT_DATE_TIME[year][rule]) |
| effectiveDate = EXACT_DATE_TIME[year][rule]; |
| else { |
| //If we have a specific date, use that! |
| if (!isNaN(rule[4])) { |
| effectiveDate = new Date(Date.UTC(year, SHORT_MONTHS[rule[3]], rule[4], hms[1], hms[2], hms[3], 0)); |
| } |
| //Let's hunt for the date. |
| else { |
| var targetDay |
| , operator; |
| //Example: `lastThu` |
| if (rule[4].substr(0, 4) === "last") { |
| // Start at the last day of the month and work backward. |
| effectiveDate = new Date(Date.UTC(year, SHORT_MONTHS[rule[3]] + 1, 1, hms[1] - 24, hms[2], hms[3], 0)); |
| targetDay = SHORT_DAYS[rule[4].substr(4, 3)]; |
| operator = "<="; |
| } |
| //Example: `Sun>=15` |
| else { |
| //Start at the specified date. |
| effectiveDate = new Date(Date.UTC(year, SHORT_MONTHS[rule[3]], rule[4].substr(5), hms[1], hms[2], hms[3], 0)); |
| targetDay = SHORT_DAYS[rule[4].substr(0, 3)]; |
| operator = rule[4].substr(3, 2); |
| } |
| var ourDay = effectiveDate.getUTCDay(); |
| //Go forwards. |
| if (operator === ">=") { |
| effectiveDate.setUTCDate(effectiveDate.getUTCDate() + (targetDay - ourDay + ((targetDay < ourDay) ? 7 : 0))); |
| } |
| //Go backwards. Looking for the last of a certain day, or operator is "<=" (less likely). |
| else { |
| effectiveDate.setUTCDate(effectiveDate.getUTCDate() + (targetDay - ourDay - ((targetDay > ourDay) ? 7 : 0))); |
| } |
| } |
| EXACT_DATE_TIME[year][rule] = effectiveDate; |
| } |
| |
| |
| //If previous rule is given, correct for the fact that the starting time of the current |
| // rule may be specified in local time. |
| if (prevRule) { |
| effectiveDate = convertDateToUTC(effectiveDate, hms[4], prevRule); |
| } |
| return effectiveDate; |
| }; |
| |
| var findApplicableRules = function (year, ruleset) { |
| var applicableRules = []; |
| for (var i = 0; ruleset && i < ruleset.length; i++) { |
| //Exclude future rules. |
| if (ruleset[i][0] <= year && |
| ( |
| // Date is in a set range. |
| ruleset[i][1] >= year || |
| // Date is in an "only" year. |
| (ruleset[i][0] === year && ruleset[i][1] === "only") || |
| //We're in a range from the start year to infinity. |
| ruleset[i][1] === "max" |
| ) |
| ) { |
| //It's completely okay to have any number of matches here. |
| // Normally we should only see two, but that doesn't preclude other numbers of matches. |
| // These matches are applicable to this year. |
| applicableRules.push([year, ruleset[i]]); |
| } |
| } |
| return applicableRules; |
| }; |
| |
| var compareDates = function (a, b, prev) { |
| var year, rule; |
| if (a.constructor !== Date) { |
| year = a[0]; |
| rule = a[1]; |
| a = (!prev && EXACT_DATE_TIME[year] && EXACT_DATE_TIME[year][rule]) |
| ? EXACT_DATE_TIME[year][rule] |
| : convertRuleToExactDateAndTime(a, prev); |
| } else if (prev) { |
| a = convertDateToUTC(a, isUTC ? 'u' : 'w', prev); |
| } |
| if (b.constructor !== Date) { |
| year = b[0]; |
| rule = b[1]; |
| b = (!prev && EXACT_DATE_TIME[year] && EXACT_DATE_TIME[year][rule]) ? EXACT_DATE_TIME[year][rule] |
| : convertRuleToExactDateAndTime(b, prev); |
| } else if (prev) { |
| b = convertDateToUTC(b, isUTC ? 'u' : 'w', prev); |
| } |
| a = Number(a); |
| b = Number(b); |
| return a - b; |
| }; |
| |
| var year = date.getUTCFullYear(); |
| var applicableRules; |
| |
| applicableRules = findApplicableRules(year, _this.rules[ruleset]); |
| applicableRules.push(date); |
| //While sorting, the time zone in which the rule starting time is specified |
| // is ignored. This is ok as long as the timespan between two DST changes is |
| // larger than the DST offset, which is probably always true. |
| // As the given date may indeed be close to a DST change, it may get sorted |
| // to a wrong position (off by one), which is corrected below. |
| applicableRules.sort(compareDates); |
| |
| //If there are not enough past DST rules... |
| if (applicableRules.indexOf(date) < 2) { |
| applicableRules = applicableRules.concat(findApplicableRules(year-1, _this.rules[ruleset])); |
| applicableRules.sort(compareDates); |
| } |
| var pinpoint = applicableRules.indexOf(date); |
| if (pinpoint > 1 && compareDates(date, applicableRules[pinpoint-1], applicableRules[pinpoint-2][1]) < 0) { |
| //The previous rule does not really apply, take the one before that. |
| return applicableRules[pinpoint - 2][1]; |
| } else if (pinpoint > 0 && pinpoint < applicableRules.length - 1 && compareDates(date, applicableRules[pinpoint+1], applicableRules[pinpoint-1][1]) > 0) { |
| |
| //The next rule does already apply, take that one. |
| return applicableRules[pinpoint + 1][1]; |
| } else if (pinpoint === 0) { |
| //No applicable rule found in this and in previous year. |
| return null; |
| } |
| return applicableRules[pinpoint - 1][1]; |
| } |
| function getAdjustedOffset(off, rule) { |
| return -Math.ceil(rule[6] - off); |
| } |
| function getAbbreviation(zone, rule) { |
| var res; |
| var base = zone[2]; |
| if (base.indexOf('%s') > -1) { |
| var repl; |
| if (rule) { |
| repl = rule[7] === '-' ? '' : rule[7]; |
| } |
| //FIXME: Right now just falling back to Standard -- |
| // apparently ought to use the last valid rule, |
| // although in practice that always ought to be Standard |
| else { |
| repl = 'S'; |
| } |
| res = base.replace('%s', repl); |
| } |
| else if (base.indexOf('/') > -1) { |
| //Chose one of two alternative strings. |
| res = base.split("/", 2)[rule[6] ? 1 : 0]; |
| } else { |
| res = base; |
| } |
| return res; |
| } |
| |
| this.zoneFileBasePath; |
| this.zoneFiles = ['africa', 'antarctica', 'asia', 'australasia', 'backward', 'etcetera', 'europe', 'northamerica', 'pacificnew', 'southamerica']; |
| this.loadingSchemes = { |
| PRELOAD_ALL: 'preloadAll', |
| LAZY_LOAD: 'lazyLoad', |
| MANUAL_LOAD: 'manualLoad' |
| }; |
| this.loadingScheme = this.loadingSchemes.LAZY_LOAD; |
| this.loadedZones = {}; |
| this.zones = {}; |
| this.rules = {}; |
| |
| this.init = function (o) { |
| var opts = { async: true } |
| , def = this.defaultZoneFile = this.loadingScheme === this.loadingSchemes.PRELOAD_ALL |
| ? this.zoneFiles |
| : 'northamerica' |
| , done = 0 |
| , callbackFn; |
| //Override default with any passed-in opts |
| for (var p in o) { |
| opts[p] = o[p]; |
| } |
| if (typeof def === 'string') { |
| return this.loadZoneFile(def, opts); |
| } |
| //Wraps callback function in another one that makes |
| // sure all files have been loaded. |
| callbackFn = opts.callback; |
| opts.callback = function () { |
| done++; |
| (done === def.length) && typeof callbackFn === 'function' && callbackFn(); |
| }; |
| for (var i = 0; i < def.length; i++) { |
| this.loadZoneFile(def[i], opts); |
| } |
| }; |
| |
| //Get the zone files via XHR -- if the sync flag |
| // is set to true, it's being called by the lazy-loading |
| // mechanism, so the result needs to be returned inline. |
| this.loadZoneFile = function (fileName, opts) { |
| if (typeof this.zoneFileBasePath === 'undefined') { |
| throw new Error('Please define a base path to your zone file directory -- timezoneJS.timezone.zoneFileBasePath.'); |
| } |
| //Ignore already loaded zones. |
| if (this.loadedZones[fileName]) { |
| return; |
| } |
| this.loadedZones[fileName] = true; |
| return builtInLoadZoneFile(fileName, opts); |
| }; |
| this.loadZoneJSONData = function (url, sync) { |
| var processData = function (data) { |
| data = eval('('+ data +')'); |
| for (var z in data.zones) { |
| _this.zones[z] = data.zones[z]; |
| } |
| for (var r in data.rules) { |
| _this.rules[r] = data.rules[r]; |
| } |
| }; |
| return sync |
| ? processData(_this.transport({ url : url, async : false })) |
| : _this.transport({ url : url, success : processData }); |
| }; |
| this.loadZoneDataFromObject = function (data) { |
| if (!data) { return; } |
| for (var z in data.zones) { |
| _this.zones[z] = data.zones[z]; |
| } |
| for (var r in data.rules) { |
| _this.rules[r] = data.rules[r]; |
| } |
| }; |
| this.getAllZones = function () { |
| var arr = []; |
| for (var z in this.zones) { arr.push(z); } |
| return arr.sort(); |
| }; |
| this.parseZones = function (str) { |
| var lines = str.split('\n') |
| , arr = [] |
| , chunk = '' |
| , l |
| , zone = null |
| , rule = null; |
| for (var i = 0; i < lines.length; i++) { |
| l = lines[i]; |
| if (l.match(/^\s/)) { |
| l = "Zone " + zone + l; |
| } |
| l = l.split("#")[0]; |
| if (l.length > 3) { |
| arr = l.split(/\s+/); |
| chunk = arr.shift(); |
| //Ignore Leap. |
| switch (chunk) { |
| case 'Zone': |
| zone = arr.shift(); |
| if (!_this.zones[zone]) { |
| _this.zones[zone] = []; |
| } |
| if (arr.length < 3) break; |
| //Process zone right here and replace 3rd element with the processed array. |
| arr.splice(3, arr.length, processZone(arr)); |
| if (arr[3]) arr[3] = Date.UTC.apply(null, arr[3]); |
| arr[0] = -getBasicOffset(arr[0]); |
| _this.zones[zone].push(arr); |
| break; |
| case 'Rule': |
| rule = arr.shift(); |
| if (!_this.rules[rule]) { |
| _this.rules[rule] = []; |
| } |
| //Parse int FROM year and TO year |
| arr[0] = parseInt(arr[0], 10); |
| arr[1] = parseInt(arr[1], 10) || arr[1]; |
| //Parse time string AT |
| arr[5] = parseTimeString(arr[5]); |
| //Parse offset SAVE |
| arr[6] = getBasicOffset(arr[6]); |
| _this.rules[rule].push(arr); |
| break; |
| case 'Link': |
| //No zones for these should already exist. |
| if (_this.zones[arr[1]]) { |
| throw new Error('Error with Link ' + arr[1] + '. Cannot create link of a preexisted zone.'); |
| } |
| //Create the link. |
| _this.zones[arr[1]] = arr[0]; |
| break; |
| } |
| } |
| } |
| return true; |
| }; |
| //Expose transport mechanism and allow overwrite. |
| this.transport = _transport; |
| this.getTzInfo = function (dt, tz, isUTC) { |
| //Lazy-load any zones not yet loaded. |
| if (this.loadingScheme === this.loadingSchemes.LAZY_LOAD) { |
| //Get the correct region for the zone. |
| var zoneFile = getRegionForTimezone(tz); |
| if (!zoneFile) { |
| throw new Error('Not a valid timezone ID.'); |
| } |
| if (!this.loadedZones[zoneFile]) { |
| //Get the file and parse it -- use synchronous XHR. |
| this.loadZoneFile(zoneFile); |
| } |
| } |
| var z = getZone(dt, tz); |
| var off = z[0]; |
| //See if the offset needs adjustment. |
| var rule = getRule(dt, z, isUTC); |
| if (rule) { |
| off = getAdjustedOffset(off, rule); |
| } |
| var abbr = getAbbreviation(z, rule); |
| return { tzOffset: off, tzAbbr: abbr }; |
| }; |
| }; |
| }).call(this); |
