import { addFormatToken } from ‘../format/format’; import { addUnitAlias } from ‘./aliases’; import { addRegexToken, match1to2, match1to4, match1to6, match2, match4, match6, matchSigned } from ‘../parse/regex’; import { addWeekParseToken } from ‘../parse/token’; import { weekOfYear } from ‘./week’; import toInt from ‘../utils/to-int’; import { hooks } from ‘../utils/hooks’; import { createLocal } from ‘../create/local’;

// FORMATTING

addFormatToken(0, [‘gg’, 2], 0, function () {

return this.weekYear() % 100;

});

addFormatToken(0, [‘GG’, 2], 0, function () {

return this.isoWeekYear() % 100;

});

function addWeekYearFormatToken (token, getter) {

addFormatToken(0, [token, token.length], 0, getter);

}

addWeekYearFormatToken(‘gggg’, ‘weekYear’); addWeekYearFormatToken(‘ggggg’, ‘weekYear’); addWeekYearFormatToken(‘GGGG’, ‘isoWeekYear’); addWeekYearFormatToken(‘GGGGG’, ‘isoWeekYear’);

// ALIASES

addUnitAlias(‘weekYear’, ‘gg’); addUnitAlias(‘isoWeekYear’, ‘GG’);

// PARSING

addRegexToken(‘G’, matchSigned); addRegexToken(‘g’, matchSigned); addRegexToken(‘GG’, match1to2, match2); addRegexToken(‘gg’, match1to2, match2); addRegexToken(‘GGGG’, match1to4, match4); addRegexToken(‘gggg’, match1to4, match4); addRegexToken(‘GGGGG’, match1to6, match6); addRegexToken(‘ggggg’, match1to6, match6);

addWeekParseToken([‘gggg’, ‘ggggg’, ‘GGGG’, ‘GGGGG’], function (input, week, config, token) {

week[token.substr(0, 2)] = toInt(input);

});

addWeekParseToken([‘gg’, ‘GG’], function (input, week, config, token) {

week[token] = hooks.parseTwoDigitYear(input);

});

// HELPERS

function weeksInYear(year, dow, doy) {

return weekOfYear(createLocal([year, 11, 31 + dow - doy]), dow, doy).week;

}

// MOMENTS

export function getSetWeekYear (input) {

var year = weekOfYear(this, this.localeData()._week.dow, this.localeData()._week.doy).year;
return input == null ? year : this.add((input - year), 'y');

}

export function getSetISOWeekYear (input) {

var year = weekOfYear(this, 1, 4).year;
return input == null ? year : this.add((input - year), 'y');

}

export function getISOWeeksInYear () {

return weeksInYear(this.year(), 1, 4);

}

export function getWeeksInYear () {

var weekInfo = this.localeData()._week;
return weeksInYear(this.year(), weekInfo.dow, weekInfo.doy);

}