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File: upload/themes/bb_simple/assets/moment/src/lib/units/week-calendar-utils.js

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File: upload/themes/bb_simple/assets/moment/src/lib/units/week-calendar-utils.js
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Description: Auxiliary data
Class: PHP Bulletin Board
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import { daysInYear } from './year'; import { createLocal } from '../create/local'; import { createUTCDate } from '../create/date-from-array'; // start-of-first-week - start-of-year function firstWeekOffset(year, dow, doy) { var // first-week day -- which january is always in the first week (4 for iso, 1 for other) fwd = 7 + dow - doy, // first-week day local weekday -- which local weekday is fwd fwdlw = (7 + createUTCDate(year, 0, fwd).getUTCDay() - dow) % 7; return -fwdlw + fwd - 1; } // https://en.wikipedia.org/wiki/ISO_week_date#Calculating_a_date_given_the_year.2C_week_number_and_weekday export function dayOfYearFromWeeks(year, week, weekday, dow, doy) { var localWeekday = (7 + weekday - dow) % 7, weekOffset = firstWeekOffset(year, dow, doy), dayOfYear = 1 + 7 * (week - 1) + localWeekday + weekOffset, resYear, resDayOfYear; if (dayOfYear <= 0) { resYear = year - 1; resDayOfYear = daysInYear(resYear) + dayOfYear; } else if (dayOfYear > daysInYear(year)) { resYear = year + 1; resDayOfYear = dayOfYear - daysInYear(year); } else { resYear = year; resDayOfYear = dayOfYear; } return { year: resYear, dayOfYear: resDayOfYear }; } export function weekOfYear(mom, dow, doy) { var weekOffset = firstWeekOffset(mom.year(), dow, doy), week = Math.floor((mom.dayOfYear() - weekOffset - 1) / 7) + 1, resWeek, resYear; if (week < 1) { resYear = mom.year() - 1; resWeek = week + weeksInYear(resYear, dow, doy); } else if (week > weeksInYear(mom.year(), dow, doy)) { resWeek = week - weeksInYear(mom.year(), dow, doy); resYear = mom.year() + 1; } else { resYear = mom.year(); resWeek = week; } return { week: resWeek, year: resYear }; } export function weeksInYear(year, dow, doy) { var weekOffset = firstWeekOffset(year, dow, doy), weekOffsetNext = firstWeekOffset(year + 1, dow, doy); return (daysInYear(year) - weekOffset + weekOffsetNext) / 7; }