????
Your IP : 18.220.69.92
import { hasLocaleWeekInfo, hasRelative, padStart, roundTo, validateWeekSettings } from "./util.js";
import * as English from "./english.js";
import Settings from "../settings.js";
import DateTime from "../datetime.js";
import IANAZone from "../zones/IANAZone.js";
// todo - remap caching
let intlLFCache = {};
function getCachedLF(locString, opts = {}) {
const key = JSON.stringify([locString, opts]);
let dtf = intlLFCache[key];
if (!dtf) {
dtf = new Intl.ListFormat(locString, opts);
intlLFCache[key] = dtf;
}
return dtf;
}
let intlDTCache = {};
function getCachedDTF(locString, opts = {}) {
const key = JSON.stringify([locString, opts]);
let dtf = intlDTCache[key];
if (!dtf) {
dtf = new Intl.DateTimeFormat(locString, opts);
intlDTCache[key] = dtf;
}
return dtf;
}
let intlNumCache = {};
function getCachedINF(locString, opts = {}) {
const key = JSON.stringify([locString, opts]);
let inf = intlNumCache[key];
if (!inf) {
inf = new Intl.NumberFormat(locString, opts);
intlNumCache[key] = inf;
}
return inf;
}
let intlRelCache = {};
function getCachedRTF(locString, opts = {}) {
const { base, ...cacheKeyOpts } = opts; // exclude `base` from the options
const key = JSON.stringify([locString, cacheKeyOpts]);
let inf = intlRelCache[key];
if (!inf) {
inf = new Intl.RelativeTimeFormat(locString, opts);
intlRelCache[key] = inf;
}
return inf;
}
let sysLocaleCache = null;
function systemLocale() {
if (sysLocaleCache) {
return sysLocaleCache;
} else {
sysLocaleCache = new Intl.DateTimeFormat().resolvedOptions().locale;
return sysLocaleCache;
}
}
let weekInfoCache = {};
function getCachedWeekInfo(locString) {
let data = weekInfoCache[locString];
if (!data) {
const locale = new Intl.Locale(locString);
// browsers currently implement this as a property, but spec says it should be a getter function
data = "getWeekInfo" in locale ? locale.getWeekInfo() : locale.weekInfo;
weekInfoCache[locString] = data;
}
return data;
}
function parseLocaleString(localeStr) {
// I really want to avoid writing a BCP 47 parser
// see, e.g. https://github.com/wooorm/bcp-47
// Instead, we'll do this:
// a) if the string has no -u extensions, just leave it alone
// b) if it does, use Intl to resolve everything
// c) if Intl fails, try again without the -u
// private subtags and unicode subtags have ordering requirements,
// and we're not properly parsing this, so just strip out the
// private ones if they exist.
const xIndex = localeStr.indexOf("-x-");
if (xIndex !== -1) {
localeStr = localeStr.substring(0, xIndex);
}
const uIndex = localeStr.indexOf("-u-");
if (uIndex === -1) {
return [localeStr];
} else {
let options;
let selectedStr;
try {
options = getCachedDTF(localeStr).resolvedOptions();
selectedStr = localeStr;
} catch (e) {
const smaller = localeStr.substring(0, uIndex);
options = getCachedDTF(smaller).resolvedOptions();
selectedStr = smaller;
}
const { numberingSystem, calendar } = options;
return [selectedStr, numberingSystem, calendar];
}
}
function intlConfigString(localeStr, numberingSystem, outputCalendar) {
if (outputCalendar || numberingSystem) {
if (!localeStr.includes("-u-")) {
localeStr += "-u";
}
if (outputCalendar) {
localeStr += `-ca-${outputCalendar}`;
}
if (numberingSystem) {
localeStr += `-nu-${numberingSystem}`;
}
return localeStr;
} else {
return localeStr;
}
}
function mapMonths(f) {
const ms = [];
for (let i = 1; i <= 12; i++) {
const dt = DateTime.utc(2009, i, 1);
ms.push(f(dt));
}
return ms;
}
function mapWeekdays(f) {
const ms = [];
for (let i = 1; i <= 7; i++) {
const dt = DateTime.utc(2016, 11, 13 + i);
ms.push(f(dt));
}
return ms;
}
function listStuff(loc, length, englishFn, intlFn) {
const mode = loc.listingMode();
if (mode === "error") {
return null;
} else if (mode === "en") {
return englishFn(length);
} else {
return intlFn(length);
}
}
function supportsFastNumbers(loc) {
if (loc.numberingSystem && loc.numberingSystem !== "latn") {
return false;
} else {
return (
loc.numberingSystem === "latn" ||
!loc.locale ||
loc.locale.startsWith("en") ||
new Intl.DateTimeFormat(loc.intl).resolvedOptions().numberingSystem === "latn"
);
}
}
/**
* @private
*/
class PolyNumberFormatter {
constructor(intl, forceSimple, opts) {
this.padTo = opts.padTo || 0;
this.floor = opts.floor || false;
const { padTo, floor, ...otherOpts } = opts;
if (!forceSimple || Object.keys(otherOpts).length > 0) {
const intlOpts = { useGrouping: false, ...opts };
if (opts.padTo > 0) intlOpts.minimumIntegerDigits = opts.padTo;
this.inf = getCachedINF(intl, intlOpts);
}
}
format(i) {
if (this.inf) {
const fixed = this.floor ? Math.floor(i) : i;
return this.inf.format(fixed);
} else {
// to match the browser's numberformatter defaults
const fixed = this.floor ? Math.floor(i) : roundTo(i, 3);
return padStart(fixed, this.padTo);
}
}
}
/**
* @private
*/
class PolyDateFormatter {
constructor(dt, intl, opts) {
this.opts = opts;
this.originalZone = undefined;
let z = undefined;
if (this.opts.timeZone) {
// Don't apply any workarounds if a timeZone is explicitly provided in opts
this.dt = dt;
} else if (dt.zone.type === "fixed") {
// UTC-8 or Etc/UTC-8 are not part of tzdata, only Etc/GMT+8 and the like.
// That is why fixed-offset TZ is set to that unless it is:
// 1. Representing offset 0 when UTC is used to maintain previous behavior and does not become GMT.
// 2. Unsupported by the browser:
// - some do not support Etc/
// - < Etc/GMT-14, > Etc/GMT+12, and 30-minute or 45-minute offsets are not part of tzdata
const gmtOffset = -1 * (dt.offset / 60);
const offsetZ = gmtOffset >= 0 ? `Etc/GMT+${gmtOffset}` : `Etc/GMT${gmtOffset}`;
if (dt.offset !== 0 && IANAZone.create(offsetZ).valid) {
z = offsetZ;
this.dt = dt;
} else {
// Not all fixed-offset zones like Etc/+4:30 are present in tzdata so
// we manually apply the offset and substitute the zone as needed.
z = "UTC";
this.dt = dt.offset === 0 ? dt : dt.setZone("UTC").plus({ minutes: dt.offset });
this.originalZone = dt.zone;
}
} else if (dt.zone.type === "system") {
this.dt = dt;
} else if (dt.zone.type === "iana") {
this.dt = dt;
z = dt.zone.name;
} else {
// Custom zones can have any offset / offsetName so we just manually
// apply the offset and substitute the zone as needed.
z = "UTC";
this.dt = dt.setZone("UTC").plus({ minutes: dt.offset });
this.originalZone = dt.zone;
}
const intlOpts = { ...this.opts };
intlOpts.timeZone = intlOpts.timeZone || z;
this.dtf = getCachedDTF(intl, intlOpts);
}
format() {
if (this.originalZone) {
// If we have to substitute in the actual zone name, we have to use
// formatToParts so that the timezone can be replaced.
return this.formatToParts()
.map(({ value }) => value)
.join("");
}
return this.dtf.format(this.dt.toJSDate());
}
formatToParts() {
const parts = this.dtf.formatToParts(this.dt.toJSDate());
if (this.originalZone) {
return parts.map((part) => {
if (part.type === "timeZoneName") {
const offsetName = this.originalZone.offsetName(this.dt.ts, {
locale: this.dt.locale,
format: this.opts.timeZoneName,
});
return {
...part,
value: offsetName,
};
} else {
return part;
}
});
}
return parts;
}
resolvedOptions() {
return this.dtf.resolvedOptions();
}
}
/**
* @private
*/
class PolyRelFormatter {
constructor(intl, isEnglish, opts) {
this.opts = { style: "long", ...opts };
if (!isEnglish && hasRelative()) {
this.rtf = getCachedRTF(intl, opts);
}
}
format(count, unit) {
if (this.rtf) {
return this.rtf.format(count, unit);
} else {
return English.formatRelativeTime(unit, count, this.opts.numeric, this.opts.style !== "long");
}
}
formatToParts(count, unit) {
if (this.rtf) {
return this.rtf.formatToParts(count, unit);
} else {
return [];
}
}
}
const fallbackWeekSettings = {
firstDay: 1,
minimalDays: 4,
weekend: [6, 7],
};
/**
* @private
*/
export default class Locale {
static fromOpts(opts) {
return Locale.create(
opts.locale,
opts.numberingSystem,
opts.outputCalendar,
opts.weekSettings,
opts.defaultToEN
);
}
static create(locale, numberingSystem, outputCalendar, weekSettings, defaultToEN = false) {
const specifiedLocale = locale || Settings.defaultLocale;
// the system locale is useful for human readable strings but annoying for parsing/formatting known formats
const localeR = specifiedLocale || (defaultToEN ? "en-US" : systemLocale());
const numberingSystemR = numberingSystem || Settings.defaultNumberingSystem;
const outputCalendarR = outputCalendar || Settings.defaultOutputCalendar;
const weekSettingsR = validateWeekSettings(weekSettings) || Settings.defaultWeekSettings;
return new Locale(localeR, numberingSystemR, outputCalendarR, weekSettingsR, specifiedLocale);
}
static resetCache() {
sysLocaleCache = null;
intlDTCache = {};
intlNumCache = {};
intlRelCache = {};
}
static fromObject({ locale, numberingSystem, outputCalendar, weekSettings } = {}) {
return Locale.create(locale, numberingSystem, outputCalendar, weekSettings);
}
constructor(locale, numbering, outputCalendar, weekSettings, specifiedLocale) {
const [parsedLocale, parsedNumberingSystem, parsedOutputCalendar] = parseLocaleString(locale);
this.locale = parsedLocale;
this.numberingSystem = numbering || parsedNumberingSystem || null;
this.outputCalendar = outputCalendar || parsedOutputCalendar || null;
this.weekSettings = weekSettings;
this.intl = intlConfigString(this.locale, this.numberingSystem, this.outputCalendar);
this.weekdaysCache = { format: {}, standalone: {} };
this.monthsCache = { format: {}, standalone: {} };
this.meridiemCache = null;
this.eraCache = {};
this.specifiedLocale = specifiedLocale;
this.fastNumbersCached = null;
}
get fastNumbers() {
if (this.fastNumbersCached == null) {
this.fastNumbersCached = supportsFastNumbers(this);
}
return this.fastNumbersCached;
}
listingMode() {
const isActuallyEn = this.isEnglish();
const hasNoWeirdness =
(this.numberingSystem === null || this.numberingSystem === "latn") &&
(this.outputCalendar === null || this.outputCalendar === "gregory");
return isActuallyEn && hasNoWeirdness ? "en" : "intl";
}
clone(alts) {
if (!alts || Object.getOwnPropertyNames(alts).length === 0) {
return this;
} else {
return Locale.create(
alts.locale || this.specifiedLocale,
alts.numberingSystem || this.numberingSystem,
alts.outputCalendar || this.outputCalendar,
validateWeekSettings(alts.weekSettings) || this.weekSettings,
alts.defaultToEN || false
);
}
}
redefaultToEN(alts = {}) {
return this.clone({ ...alts, defaultToEN: true });
}
redefaultToSystem(alts = {}) {
return this.clone({ ...alts, defaultToEN: false });
}
months(length, format = false) {
return listStuff(this, length, English.months, () => {
const intl = format ? { month: length, day: "numeric" } : { month: length },
formatStr = format ? "format" : "standalone";
if (!this.monthsCache[formatStr][length]) {
this.monthsCache[formatStr][length] = mapMonths((dt) => this.extract(dt, intl, "month"));
}
return this.monthsCache[formatStr][length];
});
}
weekdays(length, format = false) {
return listStuff(this, length, English.weekdays, () => {
const intl = format
? { weekday: length, year: "numeric", month: "long", day: "numeric" }
: { weekday: length },
formatStr = format ? "format" : "standalone";
if (!this.weekdaysCache[formatStr][length]) {
this.weekdaysCache[formatStr][length] = mapWeekdays((dt) =>
this.extract(dt, intl, "weekday")
);
}
return this.weekdaysCache[formatStr][length];
});
}
meridiems() {
return listStuff(
this,
undefined,
() => English.meridiems,
() => {
// In theory there could be aribitrary day periods. We're gonna assume there are exactly two
// for AM and PM. This is probably wrong, but it's makes parsing way easier.
if (!this.meridiemCache) {
const intl = { hour: "numeric", hourCycle: "h12" };
this.meridiemCache = [DateTime.utc(2016, 11, 13, 9), DateTime.utc(2016, 11, 13, 19)].map(
(dt) => this.extract(dt, intl, "dayperiod")
);
}
return this.meridiemCache;
}
);
}
eras(length) {
return listStuff(this, length, English.eras, () => {
const intl = { era: length };
// This is problematic. Different calendars are going to define eras totally differently. What I need is the minimum set of dates
// to definitely enumerate them.
if (!this.eraCache[length]) {
this.eraCache[length] = [DateTime.utc(-40, 1, 1), DateTime.utc(2017, 1, 1)].map((dt) =>
this.extract(dt, intl, "era")
);
}
return this.eraCache[length];
});
}
extract(dt, intlOpts, field) {
const df = this.dtFormatter(dt, intlOpts),
results = df.formatToParts(),
matching = results.find((m) => m.type.toLowerCase() === field);
return matching ? matching.value : null;
}
numberFormatter(opts = {}) {
// this forcesimple option is never used (the only caller short-circuits on it, but it seems safer to leave)
// (in contrast, the rest of the condition is used heavily)
return new PolyNumberFormatter(this.intl, opts.forceSimple || this.fastNumbers, opts);
}
dtFormatter(dt, intlOpts = {}) {
return new PolyDateFormatter(dt, this.intl, intlOpts);
}
relFormatter(opts = {}) {
return new PolyRelFormatter(this.intl, this.isEnglish(), opts);
}
listFormatter(opts = {}) {
return getCachedLF(this.intl, opts);
}
isEnglish() {
return (
this.locale === "en" ||
this.locale.toLowerCase() === "en-us" ||
new Intl.DateTimeFormat(this.intl).resolvedOptions().locale.startsWith("en-us")
);
}
getWeekSettings() {
if (this.weekSettings) {
return this.weekSettings;
} else if (!hasLocaleWeekInfo()) {
return fallbackWeekSettings;
} else {
return getCachedWeekInfo(this.locale);
}
}
getStartOfWeek() {
return this.getWeekSettings().firstDay;
}
getMinDaysInFirstWeek() {
return this.getWeekSettings().minimalDays;
}
getWeekendDays() {
return this.getWeekSettings().weekend;
}
equals(other) {
return (
this.locale === other.locale &&
this.numberingSystem === other.numberingSystem &&
this.outputCalendar === other.outputCalendar
);
}
}