697 lines
16 KiB
JavaScript
697 lines
16 KiB
JavaScript
//! moment-timezone.js
|
|
//! version : 0.5.34
|
|
//! 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";
|
|
|
|
// Resolves es6 module loading issue
|
|
if (moment.version === undefined && moment.default) {
|
|
moment = moment.default;
|
|
}
|
|
|
|
// 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 = "0.5.34",
|
|
zones = {},
|
|
links = {},
|
|
countries = {},
|
|
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;
|
|
}
|
|
}
|
|
},
|
|
|
|
countries : function () {
|
|
var zone_name = this.name;
|
|
return Object.keys(countries).filter(function (country_code) {
|
|
return countries[country_code].zones.indexOf(zone_name) !== -1;
|
|
});
|
|
},
|
|
|
|
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)];
|
|
}
|
|
};
|
|
|
|
/************************************
|
|
Country object
|
|
************************************/
|
|
|
|
function Country (country_name, zone_names) {
|
|
this.name = country_name;
|
|
this.zones = zone_names;
|
|
}
|
|
|
|
/************************************
|
|
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 getCountryNames () {
|
|
return Object.keys(countries);
|
|
}
|
|
|
|
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 addCountries (data) {
|
|
var i, country_code, country_zones, split;
|
|
if (!data || !data.length) return;
|
|
for (i = 0; i < data.length; i++) {
|
|
split = data[i].split('|');
|
|
country_code = split[0].toUpperCase();
|
|
country_zones = split[1].split(' ');
|
|
countries[country_code] = new Country(
|
|
country_code,
|
|
country_zones
|
|
);
|
|
}
|
|
}
|
|
|
|
function getCountry (name) {
|
|
name = name.toUpperCase();
|
|
return countries[name] || null;
|
|
}
|
|
|
|
function zonesForCountry(country, with_offset) {
|
|
country = getCountry(country);
|
|
|
|
if (!country) return null;
|
|
|
|
var zones = country.zones.sort();
|
|
|
|
if (with_offset) {
|
|
return zones.map(function (zone_name) {
|
|
var zone = getZone(zone_name);
|
|
return {
|
|
name: zone_name,
|
|
offset: zone.utcOffset(new Date())
|
|
};
|
|
});
|
|
}
|
|
|
|
return zones;
|
|
}
|
|
|
|
function loadData (data) {
|
|
addZone(data.zones);
|
|
addLink(data.links);
|
|
addCountries(data.countries);
|
|
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._countries = countries;
|
|
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;
|
|
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;
|
|
}));
|