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Diffstat (limited to 'static/js/moment-timezone.js')
| -rw-r--r-- | static/js/moment-timezone.js | 601 |
1 files changed, 601 insertions, 0 deletions
diff --git a/static/js/moment-timezone.js b/static/js/moment-timezone.js new file mode 100644 index 0000000..644abc6 --- /dev/null +++ b/static/js/moment-timezone.js @@ -0,0 +1,601 @@ +//! moment-timezone.js +//! version : 0.5.13 +//! Copyright (c) JS Foundation and other contributors +//! license : MIT +//! github.com/moment/moment-timezone + +(function (root, factory) { + "use strict"; + + /*global define*/ + if (typeof define === 'function' && define.amd) { + define(['moment'], factory); // AMD + } else if (typeof module === 'object' && module.exports) { + module.exports = factory(require('moment')); // Node + } 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 = "0.5.13", + zones = {}, + links = {}, + names = {}, + guesses = {}, + cachedGuess, + + 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) { + 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.offset(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; + } + return b.zone.population - a.zone.population; + } + + 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){ + 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; + if (split[5]) { + 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) { + return !!(m._a && (m._tzm === undefined)); + } + + 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.offset(mom); + if (Math.abs(offset) < 16) { + offset = offset / 60; + } + if (mom.utcOffset !== undefined) { + mom.utcOffset(-offset, keepTime); + } else { + mom.zone(offset, keepTime); + } + } + }; + + fn.tz = function (name) { + if (name) { + this._z = getZone(name); + if (this._z) { + moment.updateOffset(this); + } 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); + }; + } + + fn.zoneName = abbrWrap(fn.zoneName); + fn.zoneAbbr = abbrWrap(fn.zoneAbbr); + fn.utc = resetZoneWrap(fn.utc); + + 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; +})); |