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import { parseMillis, isUndefined, untruncateYear, signedOffset, hasOwnProperty } from "./util.js";
import Formatter from "./formatter.js";
import FixedOffsetZone from "../zones/fixedOffsetZone.js";
import IANAZone from "../zones/IANAZone.js";
import DateTime from "../datetime.js";
import { digitRegex, parseDigits } from "./digits.js";
import { ConflictingSpecificationError } from "../errors.js";
const MISSING_FTP = "missing Intl.DateTimeFormat.formatToParts support";
function intUnit(regex, post = (i) => i) {
return { regex, deser: ([s]) => post(parseDigits(s)) };
}
const NBSP = String.fromCharCode(160);
const spaceOrNBSP = `[ ${NBSP}]`;
const spaceOrNBSPRegExp = new RegExp(spaceOrNBSP, "g");
function fixListRegex(s) {
// make dots optional and also make them literal
// make space and non breakable space characters interchangeable
return s.replace(/\./g, "\\.?").replace(spaceOrNBSPRegExp, spaceOrNBSP);
}
function stripInsensitivities(s) {
return s
.replace(/\./g, "") // ignore dots that were made optional
.replace(spaceOrNBSPRegExp, " ") // interchange space and nbsp
.toLowerCase();
}
function oneOf(strings, startIndex) {
if (strings === null) {
return null;
} else {
return {
regex: RegExp(strings.map(fixListRegex).join("|")),
deser: ([s]) =>
strings.findIndex((i) => stripInsensitivities(s) === stripInsensitivities(i)) + startIndex,
};
}
}
function offset(regex, groups) {
return { regex, deser: ([, h, m]) => signedOffset(h, m), groups };
}
function simple(regex) {
return { regex, deser: ([s]) => s };
}
function escapeToken(value) {
return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
}
/**
* @param token
* @param {Locale} loc
*/
function unitForToken(token, loc) {
const one = digitRegex(loc),
two = digitRegex(loc, "{2}"),
three = digitRegex(loc, "{3}"),
four = digitRegex(loc, "{4}"),
six = digitRegex(loc, "{6}"),
oneOrTwo = digitRegex(loc, "{1,2}"),
oneToThree = digitRegex(loc, "{1,3}"),
oneToSix = digitRegex(loc, "{1,6}"),
oneToNine = digitRegex(loc, "{1,9}"),
twoToFour = digitRegex(loc, "{2,4}"),
fourToSix = digitRegex(loc, "{4,6}"),
literal = (t) => ({ regex: RegExp(escapeToken(t.val)), deser: ([s]) => s, literal: true }),
unitate = (t) => {
if (token.literal) {
return literal(t);
}
switch (t.val) {
// era
case "G":
return oneOf(loc.eras("short"), 0);
case "GG":
return oneOf(loc.eras("long"), 0);
// years
case "y":
return intUnit(oneToSix);
case "yy":
return intUnit(twoToFour, untruncateYear);
case "yyyy":
return intUnit(four);
case "yyyyy":
return intUnit(fourToSix);
case "yyyyyy":
return intUnit(six);
// months
case "M":
return intUnit(oneOrTwo);
case "MM":
return intUnit(two);
case "MMM":
return oneOf(loc.months("short", true), 1);
case "MMMM":
return oneOf(loc.months("long", true), 1);
case "L":
return intUnit(oneOrTwo);
case "LL":
return intUnit(two);
case "LLL":
return oneOf(loc.months("short", false), 1);
case "LLLL":
return oneOf(loc.months("long", false), 1);
// dates
case "d":
return intUnit(oneOrTwo);
case "dd":
return intUnit(two);
// ordinals
case "o":
return intUnit(oneToThree);
case "ooo":
return intUnit(three);
// time
case "HH":
return intUnit(two);
case "H":
return intUnit(oneOrTwo);
case "hh":
return intUnit(two);
case "h":
return intUnit(oneOrTwo);
case "mm":
return intUnit(two);
case "m":
return intUnit(oneOrTwo);
case "q":
return intUnit(oneOrTwo);
case "qq":
return intUnit(two);
case "s":
return intUnit(oneOrTwo);
case "ss":
return intUnit(two);
case "S":
return intUnit(oneToThree);
case "SSS":
return intUnit(three);
case "u":
return simple(oneToNine);
case "uu":
return simple(oneOrTwo);
case "uuu":
return intUnit(one);
// meridiem
case "a":
return oneOf(loc.meridiems(), 0);
// weekYear (k)
case "kkkk":
return intUnit(four);
case "kk":
return intUnit(twoToFour, untruncateYear);
// weekNumber (W)
case "W":
return intUnit(oneOrTwo);
case "WW":
return intUnit(two);
// weekdays
case "E":
case "c":
return intUnit(one);
case "EEE":
return oneOf(loc.weekdays("short", false), 1);
case "EEEE":
return oneOf(loc.weekdays("long", false), 1);
case "ccc":
return oneOf(loc.weekdays("short", true), 1);
case "cccc":
return oneOf(loc.weekdays("long", true), 1);
// offset/zone
case "Z":
case "ZZ":
return offset(new RegExp(`([+-]${oneOrTwo.source})(?::(${two.source}))?`), 2);
case "ZZZ":
return offset(new RegExp(`([+-]${oneOrTwo.source})(${two.source})?`), 2);
// we don't support ZZZZ (PST) or ZZZZZ (Pacific Standard Time) in parsing
// because we don't have any way to figure out what they are
case "z":
return simple(/[a-z_+-/]{1,256}?/i);
// this special-case "token" represents a place where a macro-token expanded into a white-space literal
// in this case we accept any non-newline white-space
case " ":
return simple(/[^\S\n\r]/);
default:
return literal(t);
}
};
const unit = unitate(token) || {
invalidReason: MISSING_FTP,
};
unit.token = token;
return unit;
}
const partTypeStyleToTokenVal = {
year: {
"2-digit": "yy",
numeric: "yyyyy",
},
month: {
numeric: "M",
"2-digit": "MM",
short: "MMM",
long: "MMMM",
},
day: {
numeric: "d",
"2-digit": "dd",
},
weekday: {
short: "EEE",
long: "EEEE",
},
dayperiod: "a",
dayPeriod: "a",
hour12: {
numeric: "h",
"2-digit": "hh",
},
hour24: {
numeric: "H",
"2-digit": "HH",
},
minute: {
numeric: "m",
"2-digit": "mm",
},
second: {
numeric: "s",
"2-digit": "ss",
},
timeZoneName: {
long: "ZZZZZ",
short: "ZZZ",
},
};
function tokenForPart(part, formatOpts, resolvedOpts) {
const { type, value } = part;
if (type === "literal") {
const isSpace = /^\s+$/.test(value);
return {
literal: !isSpace,
val: isSpace ? " " : value,
};
}
const style = formatOpts[type];
// The user might have explicitly specified hour12 or hourCycle
// if so, respect their decision
// if not, refer back to the resolvedOpts, which are based on the locale
let actualType = type;
if (type === "hour") {
if (formatOpts.hour12 != null) {
actualType = formatOpts.hour12 ? "hour12" : "hour24";
} else if (formatOpts.hourCycle != null) {
if (formatOpts.hourCycle === "h11" || formatOpts.hourCycle === "h12") {
actualType = "hour12";
} else {
actualType = "hour24";
}
} else {
// tokens only differentiate between 24 hours or not,
// so we do not need to check hourCycle here, which is less supported anyways
actualType = resolvedOpts.hour12 ? "hour12" : "hour24";
}
}
let val = partTypeStyleToTokenVal[actualType];
if (typeof val === "object") {
val = val[style];
}
if (val) {
return {
literal: false,
val,
};
}
return undefined;
}
function buildRegex(units) {
const re = units.map((u) => u.regex).reduce((f, r) => `${f}(${r.source})`, "");
return [`^${re}$`, units];
}
function match(input, regex, handlers) {
const matches = input.match(regex);
if (matches) {
const all = {};
let matchIndex = 1;
for (const i in handlers) {
if (hasOwnProperty(handlers, i)) {
const h = handlers[i],
groups = h.groups ? h.groups + 1 : 1;
if (!h.literal && h.token) {
all[h.token.val[0]] = h.deser(matches.slice(matchIndex, matchIndex + groups));
}
matchIndex += groups;
}
}
return [matches, all];
} else {
return [matches, {}];
}
}
function dateTimeFromMatches(matches) {
const toField = (token) => {
switch (token) {
case "S":
return "millisecond";
case "s":
return "second";
case "m":
return "minute";
case "h":
case "H":
return "hour";
case "d":
return "day";
case "o":
return "ordinal";
case "L":
case "M":
return "month";
case "y":
return "year";
case "E":
case "c":
return "weekday";
case "W":
return "weekNumber";
case "k":
return "weekYear";
case "q":
return "quarter";
default:
return null;
}
};
let zone = null;
let specificOffset;
if (!isUndefined(matches.z)) {
zone = IANAZone.create(matches.z);
}
if (!isUndefined(matches.Z)) {
if (!zone) {
zone = new FixedOffsetZone(matches.Z);
}
specificOffset = matches.Z;
}
if (!isUndefined(matches.q)) {
matches.M = (matches.q - 1) * 3 + 1;
}
if (!isUndefined(matches.h)) {
if (matches.h < 12 && matches.a === 1) {
matches.h += 12;
} else if (matches.h === 12 && matches.a === 0) {
matches.h = 0;
}
}
if (matches.G === 0 && matches.y) {
matches.y = -matches.y;
}
if (!isUndefined(matches.u)) {
matches.S = parseMillis(matches.u);
}
const vals = Object.keys(matches).reduce((r, k) => {
const f = toField(k);
if (f) {
r[f] = matches[k];
}
return r;
}, {});
return [vals, zone, specificOffset];
}
let dummyDateTimeCache = null;
function getDummyDateTime() {
if (!dummyDateTimeCache) {
dummyDateTimeCache = DateTime.fromMillis(1555555555555);
}
return dummyDateTimeCache;
}
function maybeExpandMacroToken(token, locale) {
if (token.literal) {
return token;
}
const formatOpts = Formatter.macroTokenToFormatOpts(token.val);
const tokens = formatOptsToTokens(formatOpts, locale);
if (tokens == null || tokens.includes(undefined)) {
return token;
}
return tokens;
}
export function expandMacroTokens(tokens, locale) {
return Array.prototype.concat(...tokens.map((t) => maybeExpandMacroToken(t, locale)));
}
/**
* @private
*/
export function explainFromTokens(locale, input, format) {
const tokens = expandMacroTokens(Formatter.parseFormat(format), locale),
units = tokens.map((t) => unitForToken(t, locale)),
disqualifyingUnit = units.find((t) => t.invalidReason);
if (disqualifyingUnit) {
return { input, tokens, invalidReason: disqualifyingUnit.invalidReason };
} else {
const [regexString, handlers] = buildRegex(units),
regex = RegExp(regexString, "i"),
[rawMatches, matches] = match(input, regex, handlers),
[result, zone, specificOffset] = matches
? dateTimeFromMatches(matches)
: [null, null, undefined];
if (hasOwnProperty(matches, "a") && hasOwnProperty(matches, "H")) {
throw new ConflictingSpecificationError(
"Can't include meridiem when specifying 24-hour format"
);
}
return { input, tokens, regex, rawMatches, matches, result, zone, specificOffset };
}
}
export function parseFromTokens(locale, input, format) {
const { result, zone, specificOffset, invalidReason } = explainFromTokens(locale, input, format);
return [result, zone, specificOffset, invalidReason];
}
export function formatOptsToTokens(formatOpts, locale) {
if (!formatOpts) {
return null;
}
const formatter = Formatter.create(locale, formatOpts);
const df = formatter.dtFormatter(getDummyDateTime());
const parts = df.formatToParts();
const resolvedOpts = df.resolvedOptions();
return parts.map((p) => tokenForPart(p, formatOpts, resolvedOpts));
}