import { hooks } from '../utils/hooks';
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import { createDate, createUTCDate } from './date-from-array';
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import { daysInYear } from '../units/year';
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import { weekOfYear, weeksInYear, dayOfYearFromWeeks } from '../units/week-calendar-utils';
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import { YEAR, MONTH, DATE, HOUR, MINUTE, SECOND, MILLISECOND } from '../units/constants';
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import { createLocal } from './local';
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import defaults from '../utils/defaults';
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import getParsingFlags from './parsing-flags';
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function currentDateArray(config) {
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// hooks is actually the exported moment object
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var nowValue = new Date(hooks.now());
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if (config._useUTC) {
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return [nowValue.getUTCFullYear(), nowValue.getUTCMonth(), nowValue.getUTCDate()];
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}
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return [nowValue.getFullYear(), nowValue.getMonth(), nowValue.getDate()];
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}
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// convert an array to a date.
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// the array should mirror the parameters below
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// note: all values past the year are optional and will default to the lowest possible value.
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// [year, month, day , hour, minute, second, millisecond]
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export function configFromArray (config) {
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var i, date, input = [], currentDate, expectedWeekday, yearToUse;
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if (config._d) {
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return;
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}
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currentDate = currentDateArray(config);
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//compute day of the year from weeks and weekdays
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if (config._w && config._a[DATE] == null && config._a[MONTH] == null) {
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dayOfYearFromWeekInfo(config);
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}
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//if the day of the year is set, figure out what it is
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if (config._dayOfYear != null) {
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yearToUse = defaults(config._a[YEAR], currentDate[YEAR]);
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if (config._dayOfYear > daysInYear(yearToUse) || config._dayOfYear === 0) {
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getParsingFlags(config)._overflowDayOfYear = true;
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}
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date = createUTCDate(yearToUse, 0, config._dayOfYear);
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config._a[MONTH] = date.getUTCMonth();
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config._a[DATE] = date.getUTCDate();
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}
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// Default to current date.
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// * if no year, month, day of month are given, default to today
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// * if day of month is given, default month and year
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// * if month is given, default only year
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// * if year is given, don't default anything
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for (i = 0; i < 3 && config._a[i] == null; ++i) {
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config._a[i] = input[i] = currentDate[i];
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}
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// Zero out whatever was not defaulted, including time
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for (; i < 7; i++) {
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config._a[i] = input[i] = (config._a[i] == null) ? (i === 2 ? 1 : 0) : config._a[i];
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}
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// Check for 24:00:00.000
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if (config._a[HOUR] === 24 &&
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config._a[MINUTE] === 0 &&
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config._a[SECOND] === 0 &&
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config._a[MILLISECOND] === 0) {
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config._nextDay = true;
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config._a[HOUR] = 0;
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}
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config._d = (config._useUTC ? createUTCDate : createDate).apply(null, input);
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expectedWeekday = config._useUTC ? config._d.getUTCDay() : config._d.getDay();
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// Apply timezone offset from input. The actual utcOffset can be changed
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// with parseZone.
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if (config._tzm != null) {
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config._d.setUTCMinutes(config._d.getUTCMinutes() - config._tzm);
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}
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if (config._nextDay) {
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config._a[HOUR] = 24;
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}
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// check for mismatching day of week
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if (config._w && typeof config._w.d !== 'undefined' && config._w.d !== expectedWeekday) {
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getParsingFlags(config).weekdayMismatch = true;
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}
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}
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function dayOfYearFromWeekInfo(config) {
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var w, weekYear, week, weekday, dow, doy, temp, weekdayOverflow;
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w = config._w;
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if (w.GG != null || w.W != null || w.E != null) {
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dow = 1;
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doy = 4;
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// TODO: We need to take the current isoWeekYear, but that depends on
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// how we interpret now (local, utc, fixed offset). So create
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// a now version of current config (take local/utc/offset flags, and
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// create now).
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weekYear = defaults(w.GG, config._a[YEAR], weekOfYear(createLocal(), 1, 4).year);
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week = defaults(w.W, 1);
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weekday = defaults(w.E, 1);
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if (weekday < 1 || weekday > 7) {
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weekdayOverflow = true;
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}
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} else {
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dow = config._locale._week.dow;
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doy = config._locale._week.doy;
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var curWeek = weekOfYear(createLocal(), dow, doy);
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weekYear = defaults(w.gg, config._a[YEAR], curWeek.year);
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// Default to current week.
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week = defaults(w.w, curWeek.week);
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if (w.d != null) {
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// weekday -- low day numbers are considered next week
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weekday = w.d;
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if (weekday < 0 || weekday > 6) {
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weekdayOverflow = true;
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}
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} else if (w.e != null) {
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// local weekday -- counting starts from begining of week
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weekday = w.e + dow;
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if (w.e < 0 || w.e > 6) {
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weekdayOverflow = true;
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}
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} else {
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// default to begining of week
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weekday = dow;
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}
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}
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if (week < 1 || week > weeksInYear(weekYear, dow, doy)) {
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getParsingFlags(config)._overflowWeeks = true;
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} else if (weekdayOverflow != null) {
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getParsingFlags(config)._overflowWeekday = true;
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} else {
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temp = dayOfYearFromWeeks(weekYear, week, weekday, dow, doy);
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config._a[YEAR] = temp.year;
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config._dayOfYear = temp.dayOfYear;
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}
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}
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