//! moment-timezone.js //! version : 0.5.26 //! Copyright (c) JS Foundation and other contributors //! license : MIT //! github.com/moment/moment-timezone (function (root, factory) { "use strict"; /*global define*/ if (typeof module === 'object' && module.exports) { module.exports = factory(require('moment')); // Node } else if (typeof define === 'function' && define.amd) { define(['moment'], factory); // AMD } else { factory(root.moment); // Browser } }(this, function (moment) { "use strict"; // Do not load moment-timezone a second time. // if (moment.tz !== undefined) { // logError('Moment Timezone ' + moment.tz.version + ' was already loaded ' + (moment.tz.dataVersion ? 'with data from ' : 'without any data') + moment.tz.dataVersion); // return moment; // } var VERSION = "0.5.26", zones = {}, links = {}, names = {}, guesses = {}, cachedGuess; if (!moment || typeof moment.version !== 'string') { logError('Moment Timezone requires Moment.js. See https://momentjs.com/timezone/docs/#/use-it/browser/'); } var momentVersion = moment.version.split('.'), major = +momentVersion[0], minor = +momentVersion[1]; // Moment.js version check if (major < 2 || (major === 2 && minor < 6)) { logError('Moment Timezone requires Moment.js >= 2.6.0. You are using Moment.js ' + moment.version + '. See momentjs.com'); } /************************************ Unpacking ************************************/ function charCodeToInt(charCode) { if (charCode > 96) { return charCode - 87; } else if (charCode > 64) { return charCode - 29; } return charCode - 48; } function unpackBase60(string) { var i = 0, parts = string.split('.'), whole = parts[0], fractional = parts[1] || '', multiplier = 1, num, out = 0, sign = 1; // handle negative numbers if (string.charCodeAt(0) === 45) { i = 1; sign = -1; } // handle digits before the decimal for (i; i < whole.length; i++) { num = charCodeToInt(whole.charCodeAt(i)); out = 60 * out + num; } // handle digits after the decimal for (i = 0; i < fractional.length; i++) { multiplier = multiplier / 60; num = charCodeToInt(fractional.charCodeAt(i)); out += num * multiplier; } return out * sign; } function arrayToInt (array) { for (var i = 0; i < array.length; i++) { array[i] = unpackBase60(array[i]); } } function intToUntil (array, length) { for (var i = 0; i < length; i++) { array[i] = Math.round((array[i - 1] || 0) + (array[i] * 60000)); // minutes to milliseconds } array[length - 1] = Infinity; } function mapIndices (source, indices) { var out = [], i; for (i = 0; i < indices.length; i++) { out[i] = source[indices[i]]; } return out; } function unpack (string) { var data = string.split('|'), offsets = data[2].split(' '), indices = data[3].split(''), untils = data[4].split(' '); arrayToInt(offsets); arrayToInt(indices); arrayToInt(untils); intToUntil(untils, indices.length); return { name : data[0], abbrs : mapIndices(data[1].split(' '), indices), offsets : mapIndices(offsets, indices), untils : untils, population : data[5] | 0 }; } /************************************ Zone object ************************************/ function Zone (packedString) { if (packedString) { this._set(unpack(packedString)); } } Zone.prototype = { _set : function (unpacked) { this.name = unpacked.name; this.abbrs = unpacked.abbrs; this.untils = unpacked.untils; this.offsets = unpacked.offsets; this.population = unpacked.population; }, _index : function (timestamp) { var target = +timestamp, untils = this.untils, i; for (i = 0; i < untils.length; i++) { if (target < untils[i]) { return i; } } }, parse : function (timestamp) { var target = +timestamp, offsets = this.offsets, untils = this.untils, max = untils.length - 1, offset, offsetNext, offsetPrev, i; for (i = 0; i < max; i++) { offset = offsets[i]; offsetNext = offsets[i + 1]; offsetPrev = offsets[i ? i - 1 : i]; if (offset < offsetNext && tz.moveAmbiguousForward) { offset = offsetNext; } else if (offset > offsetPrev && tz.moveInvalidForward) { offset = offsetPrev; } if (target < untils[i] - (offset * 60000)) { return offsets[i]; } } return offsets[max]; }, abbr : function (mom) { return this.abbrs[this._index(mom)]; }, offset : function (mom) { logError("zone.offset has been deprecated in favor of zone.utcOffset"); return this.offsets[this._index(mom)]; }, utcOffset : function (mom) { return this.offsets[this._index(mom)]; } }; /************************************ Current Timezone ************************************/ function OffsetAt(at) { var timeString = at.toTimeString(); var abbr = timeString.match(/\([a-z ]+\)/i); if (abbr && abbr[0]) { // 17:56:31 GMT-0600 (CST) // 17:56:31 GMT-0600 (Central Standard Time) abbr = abbr[0].match(/[A-Z]/g); abbr = abbr ? abbr.join('') : undefined; } else { // 17:56:31 CST // 17:56:31 GMT+0800 (台北標準時間) abbr = timeString.match(/[A-Z]{3,5}/g); abbr = abbr ? abbr[0] : undefined; } if (abbr === 'GMT') { abbr = undefined; } this.at = +at; this.abbr = abbr; this.offset = at.getTimezoneOffset(); } function ZoneScore(zone) { this.zone = zone; this.offsetScore = 0; this.abbrScore = 0; } ZoneScore.prototype.scoreOffsetAt = function (offsetAt) { this.offsetScore += Math.abs(this.zone.utcOffset(offsetAt.at) - offsetAt.offset); if (this.zone.abbr(offsetAt.at).replace(/[^A-Z]/g, '') !== offsetAt.abbr) { this.abbrScore++; } }; function findChange(low, high) { var mid, diff; while ((diff = ((high.at - low.at) / 12e4 | 0) * 6e4)) { mid = new OffsetAt(new Date(low.at + diff)); if (mid.offset === low.offset) { low = mid; } else { high = mid; } } return low; } function userOffsets() { var startYear = new Date().getFullYear() - 2, last = new OffsetAt(new Date(startYear, 0, 1)), offsets = [last], change, next, i; for (i = 1; i < 48; i++) { next = new OffsetAt(new Date(startYear, i, 1)); if (next.offset !== last.offset) { change = findChange(last, next); offsets.push(change); offsets.push(new OffsetAt(new Date(change.at + 6e4))); } last = next; } for (i = 0; i < 4; i++) { offsets.push(new OffsetAt(new Date(startYear + i, 0, 1))); offsets.push(new OffsetAt(new Date(startYear + i, 6, 1))); } return offsets; } function sortZoneScores (a, b) { if (a.offsetScore !== b.offsetScore) { return a.offsetScore - b.offsetScore; } if (a.abbrScore !== b.abbrScore) { return a.abbrScore - b.abbrScore; } if (a.zone.population !== b.zone.population) { return b.zone.population - a.zone.population; } return b.zone.name.localeCompare(a.zone.name); } function addToGuesses (name, offsets) { var i, offset; arrayToInt(offsets); for (i = 0; i < offsets.length; i++) { offset = offsets[i]; guesses[offset] = guesses[offset] || {}; guesses[offset][name] = true; } } function guessesForUserOffsets (offsets) { var offsetsLength = offsets.length, filteredGuesses = {}, out = [], i, j, guessesOffset; for (i = 0; i < offsetsLength; i++) { guessesOffset = guesses[offsets[i].offset] || {}; for (j in guessesOffset) { if (guessesOffset.hasOwnProperty(j)) { filteredGuesses[j] = true; } } } for (i in filteredGuesses) { if (filteredGuesses.hasOwnProperty(i)) { out.push(names[i]); } } return out; } function rebuildGuess () { // use Intl API when available and returning valid time zone try { var intlName = Intl.DateTimeFormat().resolvedOptions().timeZone; if (intlName && intlName.length > 3) { var name = names[normalizeName(intlName)]; if (name) { return name; } logError("Moment Timezone found " + intlName + " from the Intl api, but did not have that data loaded."); } } catch (e) { // Intl unavailable, fall back to manual guessing. } var offsets = userOffsets(), offsetsLength = offsets.length, guesses = guessesForUserOffsets(offsets), zoneScores = [], zoneScore, i, j; for (i = 0; i < guesses.length; i++) { zoneScore = new ZoneScore(getZone(guesses[i]), offsetsLength); for (j = 0; j < offsetsLength; j++) { zoneScore.scoreOffsetAt(offsets[j]); } zoneScores.push(zoneScore); } zoneScores.sort(sortZoneScores); return zoneScores.length > 0 ? zoneScores[0].zone.name : undefined; } function guess (ignoreCache) { if (!cachedGuess || ignoreCache) { cachedGuess = rebuildGuess(); } return cachedGuess; } /************************************ Global Methods ************************************/ function normalizeName (name) { return (name || '').toLowerCase().replace(/\//g, '_'); } function addZone (packed) { var i, name, split, normalized; if (typeof packed === "string") { packed = [packed]; } for (i = 0; i < packed.length; i++) { split = packed[i].split('|'); name = split[0]; normalized = normalizeName(name); zones[normalized] = packed[i]; names[normalized] = name; addToGuesses(normalized, split[2].split(' ')); } } function getZone (name, caller) { name = normalizeName(name); var zone = zones[name]; var link; if (zone instanceof Zone) { return zone; } if (typeof zone === 'string') { zone = new Zone(zone); zones[name] = zone; return zone; } // Pass getZone to prevent recursion more than 1 level deep if (links[name] && caller !== getZone && (link = getZone(links[name], getZone))) { zone = zones[name] = new Zone(); zone._set(link); zone.name = names[name]; return zone; } return null; } function getNames () { var i, out = []; for (i in names) { if (names.hasOwnProperty(i) && (zones[i] || zones[links[i]]) && names[i]) { out.push(names[i]); } } return out.sort(); } function addLink (aliases) { var i, alias, normal0, normal1; if (typeof aliases === "string") { aliases = [aliases]; } for (i = 0; i < aliases.length; i++) { alias = aliases[i].split('|'); normal0 = normalizeName(alias[0]); normal1 = normalizeName(alias[1]); links[normal0] = normal1; names[normal0] = alias[0]; links[normal1] = normal0; names[normal1] = alias[1]; } } function loadData (data) { addZone(data.zones); addLink(data.links); tz.dataVersion = data.version; } function zoneExists (name) { if (!zoneExists.didShowError) { zoneExists.didShowError = true; logError("moment.tz.zoneExists('" + name + "') has been deprecated in favor of !moment.tz.zone('" + name + "')"); } return !!getZone(name); } function needsOffset (m) { var isUnixTimestamp = (m._f === 'X' || m._f === 'x'); return !!(m._a && (m._tzm === undefined) && !isUnixTimestamp); } function logError (message) { if (typeof console !== 'undefined' && typeof console.error === 'function') { console.error(message); } } /************************************ moment.tz namespace ************************************/ function tz (input) { var args = Array.prototype.slice.call(arguments, 0, -1), name = arguments[arguments.length - 1], zone = getZone(name), out = moment.utc.apply(null, args); if (zone && !moment.isMoment(input) && needsOffset(out)) { out.add(zone.parse(out), 'minutes'); } out.tz(name); return out; } tz.version = VERSION; tz.dataVersion = ''; tz._zones = zones; tz._links = links; tz._names = names; tz.add = addZone; tz.link = addLink; tz.load = loadData; tz.zone = getZone; tz.zoneExists = zoneExists; // deprecated in 0.1.0 tz.guess = guess; tz.names = getNames; tz.Zone = Zone; tz.unpack = unpack; tz.unpackBase60 = unpackBase60; tz.needsOffset = needsOffset; tz.moveInvalidForward = true; tz.moveAmbiguousForward = false; /************************************ Interface with Moment.js ************************************/ var fn = moment.fn; moment.tz = tz; moment.defaultZone = null; moment.updateOffset = function (mom, keepTime) { var zone = moment.defaultZone, offset; if (mom._z === undefined) { if (zone && needsOffset(mom) && !mom._isUTC) { mom._d = moment.utc(mom._a)._d; mom.utc().add(zone.parse(mom), 'minutes'); } mom._z = zone; } if (mom._z) { offset = mom._z.utcOffset(mom); if (Math.abs(offset) < 16) { offset = offset / 60; } if (mom.utcOffset !== undefined) { var z = mom._z; mom.utcOffset(-offset, keepTime); mom._z = z; } else { mom.zone(offset, keepTime); } } }; fn.tz = function (name, keepTime) { if (name) { if (typeof name !== 'string') { throw new Error('Time zone name must be a string, got ' + name + ' [' + typeof name + ']'); } this._z = getZone(name); if (this._z) { moment.updateOffset(this, keepTime); } else { logError("Moment Timezone has no data for " + name + ". See http://momentjs.com/timezone/docs/#/data-loading/."); } return this; } if (this._z) { return this._z.name; } }; function abbrWrap (old) { return function () { if (this._z) { return this._z.abbr(this); } return old.call(this); }; } function resetZoneWrap (old) { return function () { this._z = null; return old.apply(this, arguments); }; } function resetZoneWrap2 (old) { return function () { if (arguments.length > 0) this._z = null; return old.apply(this, arguments); }; } fn.zoneName = abbrWrap(fn.zoneName); fn.zoneAbbr = abbrWrap(fn.zoneAbbr); fn.utc = resetZoneWrap(fn.utc); fn.local = resetZoneWrap(fn.local); fn.utcOffset = resetZoneWrap2(fn.utcOffset); moment.tz.setDefault = function(name) { if (major < 2 || (major === 2 && minor < 9)) { logError('Moment Timezone setDefault() requires Moment.js >= 2.9.0. You are using Moment.js ' + moment.version + '.'); } moment.defaultZone = name ? getZone(name) : null; return moment; }; // Cloning a moment should include the _z property. var momentProperties = moment.momentProperties; if (Object.prototype.toString.call(momentProperties) === '[object Array]') { // moment 2.8.1+ momentProperties.push('_z'); momentProperties.push('_a'); } else if (momentProperties) { // moment 2.7.0 momentProperties._z = null; } // INJECT DATA return moment; }));