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Diffstat (limited to 'static/js/flot/examples/axes-time-zones/date.js')
| -rwxr-xr-x | static/js/flot/examples/axes-time-zones/date.js | 893 |
1 files changed, 0 insertions, 893 deletions
diff --git a/static/js/flot/examples/axes-time-zones/date.js b/static/js/flot/examples/axes-time-zones/date.js deleted file mode 100755 index 2899dda..0000000 --- a/static/js/flot/examples/axes-time-zones/date.js +++ /dev/null @@ -1,893 +0,0 @@ -// ----- -// 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 (n) { this.setAttribute('year', n); }, - setMonth: function (n) { this.setAttribute('month', n); }, - setYear: function (n) { this.setUTCAttribute('year', n); }, - setHours: function (n) { this.setAttribute('hours', n); }, - 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 (n) { this.setUTCAttribute('year', n); }, - setUTCHours: function (n) { this.setUTCAttribute('hours', n); }, - 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); |