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/*
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* World Calendars
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* https://github.com/alexcjohnson/world-calendars
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*
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* Batch-converted from kbwood/calendars
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* Many thanks to Keith Wood and all of the contributors to the original project!
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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/* http://keith-wood.name/calendars.html
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Coptic calendar for jQuery v2.0.2.
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Written by Keith Wood (wood.keith{at}optusnet.com.au) February 2010.
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Available under the MIT (http://keith-wood.name/licence.html) license.
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Please attribute the author if you use it. */
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var main = require('../main');
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var assign = require('object-assign');
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/** Implementation of the Coptic calendar.
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See <a href="http://en.wikipedia.org/wiki/Coptic_calendar">http://en.wikipedia.org/wiki/Coptic_calendar</a>.
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See also Calendrical Calculations: The Millennium Edition
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(<a href="http://emr.cs.iit.edu/home/reingold/calendar-book/index.shtml">http://emr.cs.iit.edu/home/reingold/calendar-book/index.shtml</a>).
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@class CopticCalendar
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@param [language=''] {string} The language code (default English) for localisation. */
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function CopticCalendar(language) {
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this.local = this.regionalOptions[language || ''] || this.regionalOptions[''];
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}
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CopticCalendar.prototype = new main.baseCalendar;
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assign(CopticCalendar.prototype, {
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/** The calendar name.
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@memberof CopticCalendar */
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name: 'Coptic',
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/** Julian date of start of Coptic epoch: 29 August 284 CE (Gregorian).
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@memberof CopticCalendar */
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jdEpoch: 1825029.5,
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/** Days per month in a common year.
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@memberof CopticCalendar */
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daysPerMonth: [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 5],
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/** <code>true</code> if has a year zero, <code>false</code> if not.
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@memberof CopticCalendar */
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hasYearZero: false,
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/** The minimum month number.
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@memberof CopticCalendar */
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minMonth: 1,
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/** The first month in the year.
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@memberof CopticCalendar */
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firstMonth: 1,
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/** The minimum day number.
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@memberof CopticCalendar */
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minDay: 1,
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/** Localisations for the plugin.
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Entries are objects indexed by the language code ('' being the default US/English).
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Each object has the following attributes.
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@memberof CopticCalendar
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@property name {string} The calendar name.
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@property epochs {string[]} The epoch names.
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@property monthNames {string[]} The long names of the months of the year.
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@property monthNamesShort {string[]} The short names of the months of the year.
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@property dayNames {string[]} The long names of the days of the week.
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@property dayNamesShort {string[]} The short names of the days of the week.
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@property dayNamesMin {string[]} The minimal names of the days of the week.
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@property dateFormat {string} The date format for this calendar.
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See the options on <a href="BaseCalendar.html#formatDate"><code>formatDate</code></a> for details.
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@property firstDay {number} The number of the first day of the week, starting at 0.
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@property isRTL {number} <code>true</code> if this localisation reads right-to-left. */
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regionalOptions: { // Localisations
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'': {
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name: 'Coptic',
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epochs: ['BAM', 'AM'],
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monthNames: ['Thout', 'Paopi', 'Hathor', 'Koiak', 'Tobi', 'Meshir',
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'Paremhat', 'Paremoude', 'Pashons', 'Paoni', 'Epip', 'Mesori', 'Pi Kogi Enavot'],
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monthNamesShort: ['Tho', 'Pao', 'Hath', 'Koi', 'Tob', 'Mesh',
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'Pat', 'Pad', 'Pash', 'Pao', 'Epi', 'Meso', 'PiK'],
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dayNames: ['Tkyriaka', 'Pesnau', 'Pshoment', 'Peftoou', 'Ptiou', 'Psoou', 'Psabbaton'],
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dayNamesShort: ['Tky', 'Pes', 'Psh', 'Pef', 'Pti', 'Pso', 'Psa'],
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dayNamesMin: ['Tk', 'Pes', 'Psh', 'Pef', 'Pt', 'Pso', 'Psa'],
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digits: null,
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dateFormat: 'dd/mm/yyyy',
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firstDay: 0,
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isRTL: false
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}
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},
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/** Determine whether this date is in a leap year.
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@memberof CopticCalendar
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@param year {CDate|number} The date to examine or the year to examine.
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@return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not.
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@throws Error if an invalid year or a different calendar used. */
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leapYear: function(year) {
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var date = this._validate(year, this.minMonth, this.minDay, main.local.invalidYear);
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var year = date.year() + (date.year() < 0 ? 1 : 0); // No year zero
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return year % 4 === 3 || year % 4 === -1;
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},
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/** Retrieve the number of months in a year.
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@memberof CopticCalendar
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@param year {CDate|number} The date to examine or the year to examine.
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@return {number} The number of months.
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@throws Error if an invalid year or a different calendar used. */
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monthsInYear: function(year) {
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this._validate(year, this.minMonth, this.minDay,
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main.local.invalidYear || main.regionalOptions[''].invalidYear);
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return 13;
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},
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/** Determine the week of the year for a date.
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@memberof CopticCalendar
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@param year {CDate|number} The date to examine or the year to examine.
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@param [month] {number) the month to examine.
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@param [day] {number} The day to examine.
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@return {number} The week of the year.
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@throws Error if an invalid date or a different calendar used. */
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weekOfYear: function(year, month, day) {
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// Find Sunday of this week starting on Sunday
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var checkDate = this.newDate(year, month, day);
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checkDate.add(-checkDate.dayOfWeek(), 'd');
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return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1;
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},
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/** Retrieve the number of days in a month.
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@memberof CopticCalendar
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@param year {CDate|number} The date to examine or the year of the month.
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@param [month] {number} The month.
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@return {number} The number of days in this month.
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@throws Error if an invalid month/year or a different calendar used. */
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daysInMonth: function(year, month) {
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var date = this._validate(year, month, this.minDay, main.local.invalidMonth);
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return this.daysPerMonth[date.month() - 1] +
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(date.month() === 13 && this.leapYear(date.year()) ? 1 : 0);
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},
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/** Determine whether this date is a week day.
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@memberof CopticCalendar
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@param year {CDate|number} The date to examine or the year to examine.
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@param month {number} The month to examine.
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@param day {number} The day to examine.
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@return {boolean} <code>true</code> if a week day, <code>false</code> if not.
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@throws Error if an invalid date or a different calendar used. */
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weekDay: function(year, month, day) {
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return (this.dayOfWeek(year, month, day) || 7) < 6;
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},
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/** Retrieve the Julian date equivalent for this date,
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i.e. days since January 1, 4713 BCE Greenwich noon.
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@memberof CopticCalendar
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@param year {CDate|number} The date to convert or the year to convert.
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@param [month] {number) the month to convert.
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@param [day] {number} The day to convert.
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@return {number} The equivalent Julian date.
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@throws Error if an invalid date or a different calendar used. */
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toJD: function(year, month, day) {
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var date = this._validate(year, month, day, main.local.invalidDate);
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year = date.year();
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if (year < 0) { year++; } // No year zero
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return date.day() + (date.month() - 1) * 30 +
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(year - 1) * 365 + Math.floor(year / 4) + this.jdEpoch - 1;
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},
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/** Create a new date from a Julian date.
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@memberof CopticCalendar
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@param jd {number} The Julian date to convert.
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@return {CDate} The equivalent date. */
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fromJD: function(jd) {
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var c = Math.floor(jd) + 0.5 - this.jdEpoch;
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var year = Math.floor((c - Math.floor((c + 366) / 1461)) / 365) + 1;
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if (year <= 0) { year--; } // No year zero
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c = Math.floor(jd) + 0.5 - this.newDate(year, 1, 1).toJD();
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var month = Math.floor(c / 30) + 1;
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var day = c - (month - 1) * 30 + 1;
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return this.newDate(year, month, day);
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}
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});
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// Coptic calendar implementation
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main.calendars.coptic = CopticCalendar;
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