108 lines
3.0 KiB
JavaScript
108 lines
3.0 KiB
JavaScript
//! moment-holiday.js locale configuration
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//! locale : pascha Related Holidays
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//! author : Kodie Grantham : https://github.com/kodie
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//(function() {
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// var moment = (typeof require !== 'undefined' && require !== null) && !require.amd ? require('moment') : this.moment;
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function init(moment) {
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// moment.holidays.pascha = {
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moment.modifyHolidays.add({
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"Lent": {
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date: 'pascha-46|pascha-3'
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},
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/*
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"Holy Monday": {
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date: 'pascha-6',
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keywords_y: ['great', 'monday']
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},
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"Holy Tuesday": {
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date: 'pascha-5',
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keywords_y: ['great', 'tuesday']
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},
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"Holy Wednesday": {
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date: 'pascha-4',
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keywords_y: ['great', 'wednesday']
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},
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"Holy Thursday": {
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date: 'pascha-3',
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keywords_y: ['great', 'thursday']
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},
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"Holy Friday": {
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date: 'pascha-2',
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keywords_y: ['great', 'friday']
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},
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"Holy Saturday": {
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date: 'pascha-1',
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keywords_y: ['holy', 'saturday']
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},
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*/
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"Pascha Sunday": {
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date: 'pascha',
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keywords_y: ['pascha'],
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keywords: ['sunday']
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},
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"Bright Week": {
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date: 'pascha+1|pascha+6'
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},
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"Pentecost Sunday": {
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date: 'pascha+49',
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keywords_y: ['pentecost'],
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keywords: ['sunday']
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},
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//};
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});
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/**
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* Calculates Easter in the Gregorian/Western (Catholic and Protestant) calendar
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* based on the algorithm by Oudin (1940) from http://www.tondering.dk/claus/cal/easter.php
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* @returns {array} [int month, int day]
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*/
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var pascha = function(year) {
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var f = Math.floor,
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// Golden Number - 1
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G = year % 19,
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C = f(year / 100),
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// related to Epact
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H = (C - f(C / 4) - f((8 * C + 13)/25) + 19 * G + 15) % 30,
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// number of days from 21 March to the Paschal full moon
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I = H - f(H/28) * (1 - f(29/(H + 1)) * f((21-G)/11)),
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// weekday for the Paschal full moon
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J = (year + f(year / 4) + I + 2 - C + f(C / 4)) % 7,
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// number of days from 21 March to the Sunday on or before the Paschal full moon
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L = I - J,
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month = 3 + f((L + 40)/44),
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day = L + 28 - 31 * f(month / 4);
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return moment([year, (month - 1),day]);
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}
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moment.modifyHolidays.extendParser(function(m, date){
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if (~date.indexOf('pascha')) {
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var dates = date.split('|');
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var ds = [];
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for (var i = 0; i < dates.length; i++) {
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if (dates[i].substring(0, 6) === 'pascha') {
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var e = pascha(m.year());
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if (dates[i].charAt(6) === '-') { e.subtract(dates[i].substring(7), 'days'); }
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if (dates[i].charAt(6) === '+') { e.add(dates[i].substring(7), 'days'); }
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if (dates.length === 1) { return e; }
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ds.push(e.format('M/D'));
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} else {
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ds.push(dates[i]);
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}
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}
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if (ds.length) { return ds.join('|'); }
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}
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});
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console.log("Pascha initialized");
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}
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module.exports = init;
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// if ((typeof module !== 'undefined' && module !== null ? module.exports : void 0) != null) { module.exports = moment; }
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//}).call(this);
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