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697 lines
16 KiB
697 lines
16 KiB
//! moment-timezone.js
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//! version : 0.5.43
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//! Copyright (c) JS Foundation and other contributors
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//! license : MIT
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//! github.com/moment/moment-timezone
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(function (root, factory) {
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"use strict";
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/*global define*/
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if (typeof module === 'object' && module.exports) {
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module.exports = factory(require('moment')); // Node
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} else if (typeof define === 'function' && define.amd) {
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define(['moment'], factory); // AMD
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} else {
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factory(root.moment); // Browser
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}
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}(this, function (moment) {
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"use strict";
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// Resolves es6 module loading issue
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if (moment.version === undefined && moment.default) {
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moment = moment.default;
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}
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// Do not load moment-timezone a second time.
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// if (moment.tz !== undefined) {
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// logError('Moment Timezone ' + moment.tz.version + ' was already loaded ' + (moment.tz.dataVersion ? 'with data from ' : 'without any data') + moment.tz.dataVersion);
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// return moment;
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// }
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var VERSION = "0.5.43",
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zones = {},
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links = {},
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countries = {},
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names = {},
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guesses = {},
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cachedGuess;
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if (!moment || typeof moment.version !== 'string') {
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logError('Moment Timezone requires Moment.js. See https://momentjs.com/timezone/docs/#/use-it/browser/');
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}
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var momentVersion = moment.version.split('.'),
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major = +momentVersion[0],
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minor = +momentVersion[1];
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// Moment.js version check
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if (major < 2 || (major === 2 && minor < 6)) {
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logError('Moment Timezone requires Moment.js >= 2.6.0. You are using Moment.js ' + moment.version + '. See momentjs.com');
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}
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/************************************
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Unpacking
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************************************/
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function charCodeToInt(charCode) {
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if (charCode > 96) {
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return charCode - 87;
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} else if (charCode > 64) {
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return charCode - 29;
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}
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return charCode - 48;
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}
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function unpackBase60(string) {
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var i = 0,
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parts = string.split('.'),
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whole = parts[0],
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fractional = parts[1] || '',
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multiplier = 1,
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num,
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out = 0,
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sign = 1;
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// handle negative numbers
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if (string.charCodeAt(0) === 45) {
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i = 1;
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sign = -1;
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}
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// handle digits before the decimal
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for (i; i < whole.length; i++) {
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num = charCodeToInt(whole.charCodeAt(i));
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out = 60 * out + num;
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}
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// handle digits after the decimal
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for (i = 0; i < fractional.length; i++) {
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multiplier = multiplier / 60;
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num = charCodeToInt(fractional.charCodeAt(i));
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out += num * multiplier;
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}
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return out * sign;
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}
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function arrayToInt (array) {
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for (var i = 0; i < array.length; i++) {
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array[i] = unpackBase60(array[i]);
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}
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}
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function intToUntil (array, length) {
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for (var i = 0; i < length; i++) {
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array[i] = Math.round((array[i - 1] || 0) + (array[i] * 60000)); // minutes to milliseconds
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}
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array[length - 1] = Infinity;
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}
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function mapIndices (source, indices) {
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var out = [], i;
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for (i = 0; i < indices.length; i++) {
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out[i] = source[indices[i]];
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}
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return out;
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}
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function unpack (string) {
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var data = string.split('|'),
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offsets = data[2].split(' '),
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indices = data[3].split(''),
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untils = data[4].split(' ');
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arrayToInt(offsets);
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arrayToInt(indices);
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arrayToInt(untils);
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intToUntil(untils, indices.length);
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return {
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name : data[0],
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abbrs : mapIndices(data[1].split(' '), indices),
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offsets : mapIndices(offsets, indices),
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untils : untils,
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population : data[5] | 0
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};
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}
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/************************************
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Zone object
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************************************/
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function Zone (packedString) {
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if (packedString) {
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this._set(unpack(packedString));
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}
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}
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Zone.prototype = {
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_set : function (unpacked) {
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this.name = unpacked.name;
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this.abbrs = unpacked.abbrs;
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this.untils = unpacked.untils;
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this.offsets = unpacked.offsets;
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this.population = unpacked.population;
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},
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_index : function (timestamp) {
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var target = +timestamp,
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untils = this.untils,
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i;
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for (i = 0; i < untils.length; i++) {
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if (target < untils[i]) {
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return i;
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}
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}
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},
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countries : function () {
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var zone_name = this.name;
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return Object.keys(countries).filter(function (country_code) {
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return countries[country_code].zones.indexOf(zone_name) !== -1;
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});
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},
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parse : function (timestamp) {
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var target = +timestamp,
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offsets = this.offsets,
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untils = this.untils,
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max = untils.length - 1,
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offset, offsetNext, offsetPrev, i;
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for (i = 0; i < max; i++) {
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offset = offsets[i];
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offsetNext = offsets[i + 1];
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offsetPrev = offsets[i ? i - 1 : i];
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if (offset < offsetNext && tz.moveAmbiguousForward) {
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offset = offsetNext;
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} else if (offset > offsetPrev && tz.moveInvalidForward) {
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offset = offsetPrev;
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}
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if (target < untils[i] - (offset * 60000)) {
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return offsets[i];
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}
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}
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return offsets[max];
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},
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abbr : function (mom) {
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return this.abbrs[this._index(mom)];
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},
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offset : function (mom) {
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logError("zone.offset has been deprecated in favor of zone.utcOffset");
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return this.offsets[this._index(mom)];
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},
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utcOffset : function (mom) {
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return this.offsets[this._index(mom)];
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}
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};
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/************************************
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Country object
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************************************/
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function Country (country_name, zone_names) {
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this.name = country_name;
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this.zones = zone_names;
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}
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/************************************
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Current Timezone
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************************************/
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function OffsetAt(at) {
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var timeString = at.toTimeString();
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var abbr = timeString.match(/\([a-z ]+\)/i);
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if (abbr && abbr[0]) {
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// 17:56:31 GMT-0600 (CST)
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// 17:56:31 GMT-0600 (Central Standard Time)
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abbr = abbr[0].match(/[A-Z]/g);
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abbr = abbr ? abbr.join('') : undefined;
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} else {
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// 17:56:31 CST
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// 17:56:31 GMT+0800 (台北標準時間)
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abbr = timeString.match(/[A-Z]{3,5}/g);
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abbr = abbr ? abbr[0] : undefined;
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}
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if (abbr === 'GMT') {
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abbr = undefined;
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}
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this.at = +at;
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this.abbr = abbr;
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this.offset = at.getTimezoneOffset();
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}
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function ZoneScore(zone) {
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this.zone = zone;
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this.offsetScore = 0;
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this.abbrScore = 0;
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}
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ZoneScore.prototype.scoreOffsetAt = function (offsetAt) {
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this.offsetScore += Math.abs(this.zone.utcOffset(offsetAt.at) - offsetAt.offset);
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if (this.zone.abbr(offsetAt.at).replace(/[^A-Z]/g, '') !== offsetAt.abbr) {
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this.abbrScore++;
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}
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};
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function findChange(low, high) {
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var mid, diff;
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while ((diff = ((high.at - low.at) / 12e4 | 0) * 6e4)) {
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mid = new OffsetAt(new Date(low.at + diff));
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if (mid.offset === low.offset) {
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low = mid;
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} else {
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high = mid;
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}
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}
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return low;
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}
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function userOffsets() {
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var startYear = new Date().getFullYear() - 2,
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last = new OffsetAt(new Date(startYear, 0, 1)),
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offsets = [last],
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change, next, i;
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for (i = 1; i < 48; i++) {
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next = new OffsetAt(new Date(startYear, i, 1));
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if (next.offset !== last.offset) {
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change = findChange(last, next);
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offsets.push(change);
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offsets.push(new OffsetAt(new Date(change.at + 6e4)));
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}
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last = next;
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}
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for (i = 0; i < 4; i++) {
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offsets.push(new OffsetAt(new Date(startYear + i, 0, 1)));
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offsets.push(new OffsetAt(new Date(startYear + i, 6, 1)));
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}
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return offsets;
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}
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function sortZoneScores (a, b) {
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if (a.offsetScore !== b.offsetScore) {
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return a.offsetScore - b.offsetScore;
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}
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if (a.abbrScore !== b.abbrScore) {
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return a.abbrScore - b.abbrScore;
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}
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if (a.zone.population !== b.zone.population) {
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return b.zone.population - a.zone.population;
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}
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return b.zone.name.localeCompare(a.zone.name);
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}
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function addToGuesses (name, offsets) {
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var i, offset;
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arrayToInt(offsets);
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for (i = 0; i < offsets.length; i++) {
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offset = offsets[i];
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guesses[offset] = guesses[offset] || {};
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guesses[offset][name] = true;
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}
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}
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function guessesForUserOffsets (offsets) {
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var offsetsLength = offsets.length,
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filteredGuesses = {},
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out = [],
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i, j, guessesOffset;
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for (i = 0; i < offsetsLength; i++) {
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guessesOffset = guesses[offsets[i].offset] || {};
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for (j in guessesOffset) {
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if (guessesOffset.hasOwnProperty(j)) {
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filteredGuesses[j] = true;
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}
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}
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}
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for (i in filteredGuesses) {
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if (filteredGuesses.hasOwnProperty(i)) {
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out.push(names[i]);
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}
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}
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return out;
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}
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function rebuildGuess () {
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// use Intl API when available and returning valid time zone
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try {
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var intlName = Intl.DateTimeFormat().resolvedOptions().timeZone;
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if (intlName && intlName.length > 3) {
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var name = names[normalizeName(intlName)];
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if (name) {
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return name;
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}
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logError("Moment Timezone found " + intlName + " from the Intl api, but did not have that data loaded.");
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}
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} catch (e) {
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// Intl unavailable, fall back to manual guessing.
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}
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var offsets = userOffsets(),
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offsetsLength = offsets.length,
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guesses = guessesForUserOffsets(offsets),
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zoneScores = [],
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zoneScore, i, j;
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for (i = 0; i < guesses.length; i++) {
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zoneScore = new ZoneScore(getZone(guesses[i]), offsetsLength);
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for (j = 0; j < offsetsLength; j++) {
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zoneScore.scoreOffsetAt(offsets[j]);
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}
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zoneScores.push(zoneScore);
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}
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zoneScores.sort(sortZoneScores);
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return zoneScores.length > 0 ? zoneScores[0].zone.name : undefined;
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}
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function guess (ignoreCache) {
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if (!cachedGuess || ignoreCache) {
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cachedGuess = rebuildGuess();
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}
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return cachedGuess;
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}
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/************************************
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Global Methods
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************************************/
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function normalizeName (name) {
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return (name || '').toLowerCase().replace(/\//g, '_');
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}
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function addZone (packed) {
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var i, name, split, normalized;
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if (typeof packed === "string") {
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packed = [packed];
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}
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for (i = 0; i < packed.length; i++) {
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split = packed[i].split('|');
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name = split[0];
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normalized = normalizeName(name);
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zones[normalized] = packed[i];
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names[normalized] = name;
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addToGuesses(normalized, split[2].split(' '));
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}
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}
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function getZone (name, caller) {
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name = normalizeName(name);
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var zone = zones[name];
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var link;
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if (zone instanceof Zone) {
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return zone;
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}
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if (typeof zone === 'string') {
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zone = new Zone(zone);
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zones[name] = zone;
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return zone;
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}
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// Pass getZone to prevent recursion more than 1 level deep
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if (links[name] && caller !== getZone && (link = getZone(links[name], getZone))) {
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zone = zones[name] = new Zone();
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zone._set(link);
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zone.name = names[name];
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return zone;
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}
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return null;
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}
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function getNames () {
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var i, out = [];
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for (i in names) {
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if (names.hasOwnProperty(i) && (zones[i] || zones[links[i]]) && names[i]) {
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out.push(names[i]);
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}
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}
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return out.sort();
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}
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function getCountryNames () {
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return Object.keys(countries);
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}
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function addLink (aliases) {
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var i, alias, normal0, normal1;
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if (typeof aliases === "string") {
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aliases = [aliases];
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}
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for (i = 0; i < aliases.length; i++) {
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alias = aliases[i].split('|');
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normal0 = normalizeName(alias[0]);
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normal1 = normalizeName(alias[1]);
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links[normal0] = normal1;
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names[normal0] = alias[0];
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links[normal1] = normal0;
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names[normal1] = alias[1];
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}
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}
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function addCountries (data) {
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var i, country_code, country_zones, split;
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if (!data || !data.length) return;
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for (i = 0; i < data.length; i++) {
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split = data[i].split('|');
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country_code = split[0].toUpperCase();
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country_zones = split[1].split(' ');
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countries[country_code] = new Country(
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country_code,
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country_zones
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);
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}
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}
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function getCountry (name) {
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name = name.toUpperCase();
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return countries[name] || null;
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}
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function zonesForCountry(country, with_offset) {
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country = getCountry(country);
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if (!country) return null;
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var zones = country.zones.sort();
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if (with_offset) {
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return zones.map(function (zone_name) {
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var zone = getZone(zone_name);
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return {
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name: zone_name,
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offset: zone.utcOffset(new Date())
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};
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});
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}
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return zones;
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}
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function loadData (data) {
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addZone(data.zones);
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addLink(data.links);
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addCountries(data.countries);
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tz.dataVersion = data.version;
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}
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function zoneExists (name) {
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if (!zoneExists.didShowError) {
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zoneExists.didShowError = true;
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logError("moment.tz.zoneExists('" + name + "') has been deprecated in favor of !moment.tz.zone('" + name + "')");
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}
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return !!getZone(name);
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}
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function needsOffset (m) {
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var isUnixTimestamp = (m._f === 'X' || m._f === 'x');
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return !!(m._a && (m._tzm === undefined) && !isUnixTimestamp);
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}
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function logError (message) {
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if (typeof console !== 'undefined' && typeof console.error === 'function') {
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console.error(message);
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}
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}
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/************************************
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moment.tz namespace
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************************************/
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function tz (input) {
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var args = Array.prototype.slice.call(arguments, 0, -1),
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name = arguments[arguments.length - 1],
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zone = getZone(name),
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out = moment.utc.apply(null, args);
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if (zone && !moment.isMoment(input) && needsOffset(out)) {
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out.add(zone.parse(out), 'minutes');
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}
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out.tz(name);
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return out;
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}
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tz.version = VERSION;
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tz.dataVersion = '';
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tz._zones = zones;
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tz._links = links;
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tz._names = names;
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tz._countries = countries;
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tz.add = addZone;
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tz.link = addLink;
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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;
|
|
tz.countries = getCountryNames;
|
|
tz.zonesForCountry = zonesForCountry;
|
|
|
|
/************************************
|
|
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;
|
|
}));
|