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/* http://keith-wood.name/calendars.html Calendars for jQuery v2.1.0. Written by Keith Wood (wood.keith{at}optusnet.com.au) August 2009. Available under the MIT (http://keith-wood.name/licence.html) license. Please attribute the author if you use it. */ (function ($) { // Hide scope, no $ conflict "use strict"; function Calendars() { this.regionalOptions = []; /** Localised values. @memberof Calendars @property {string} [invalidCalendar='Calendar {0} not found'] Error message for an unknown calendar. @property {string} [invalidDate='Invalid {0} date'] Error message for an invalid date for this calendar. @property {string} [invalidMonth='Invalid {0} month'] Error message for an invalid month for this calendar. @property {string} [invalidYear='Invalid {0} year'] Error message for an invalid year for this calendar. @property {string} [differentCalendars='Cannot mix {0} and {1} dates'] Error message for mixing different calendars. */ this.regionalOptions[""] = { invalidCalendar: "Calendar {0} not found", invalidDate: "Invalid {0} date", invalidMonth: "Invalid {0} month", invalidYear: "Invalid {0} year", differentCalendars: "Cannot mix {0} and {1} dates", }; this.local = this.regionalOptions[""]; this.calendars = {}; this._localCals = {}; } /** Create the calendars plugin. <p>Provides support for various world calendars in a consistent manner.</p> <p>Use the global instance, <code>$.calendars</code>, to access the functionality.</p> @class Calendars @example $.calendars.instance('julian').newDate(2014, 12, 25) */ $.extend(Calendars.prototype, { /** Obtain a calendar implementation and localisation. @memberof Calendars @param {string} [name='gregorian'] The name of the calendar, e.g. 'gregorian', 'persian', 'islamic'. @param {string} [language=''] The language code to use for localisation (default is English). @return {Calendar} The calendar and localisation. @throws Error if calendar not found. @example $.calendars.instance() $.calendars.instance('persian') $.calendars.instance('hebrew', 'he') */ instance: function (name, language) { name = (name || "gregorian").toLowerCase(); language = language || ""; var cal = this._localCals[name + "-" + language]; if (!cal && this.calendars[name]) { cal = new this.calendars[name](language); this._localCals[name + "-" + language] = cal; } if (!cal) { throw ( this.local.invalidCalendar || this.regionalOptions[""].invalidCalendar ).replace(/\{0\}/, name); } return cal; }, /** Create a new date - for today if no other parameters given. @memberof Calendars @param {CDate|number} [year] The date to copy or the year for the date. @param {number} [month] The month for the date (if numeric <code>year</code> specified above). @param {number} [day] The day for the date (if numeric <code>year</code> specified above). @param {BaseCalendar|string} [calendar='gregorian'] The underlying calendar or the name of the calendar. @param {string} [language=''] The language to use for localisation (default English). @return {CDate} The new date. @throws Error if an invalid date. @example $.calendars.newDate() $.calendars.newDate(otherDate) $.calendars.newDate(2001, 1, 1) $.calendars.newDate(1379, 10, 12, 'persian') */ newDate: function (year, month, day, calendar, language) { calendar = (typeof year !== "undefined" && year !== null && year.year ? year.calendar() : typeof calendar === "string" ? this.instance(calendar, language) : calendar) || this.instance(); return calendar.newDate(year, month, day); }, /** A simple digit substitution function for localising numbers via the {@linkcode GregorianCalendar.regionalOptions|Calendar digits} option. @memberof Calendars @param {string[]} digits The substitute digits, for 0 through 9. @return {CalendarsDigits} The substitution function. @example digits: $.calendars.substituteDigits(['۰', '۱', '۲', '۳', '۴', '۵', '۶', '۷', '۸', '۹']) */ substituteDigits: function (digits) { return function (value) { return (value + "").replace(/[0-9]/g, function (digit) { return digits[digit]; }); }; }, /** Digit substitution function for localising Chinese style numbers via the {@linkcode GregorianCalendar.regionalOptions|Calendar digits} option. @memberof Calendars @param {string[]} digits The substitute digits, for 0 through 9. @param {string[]} powers The characters denoting powers of 10, i.e. 1, 10, 100, 1000. @return {CalendarsDigits} The substitution function. @example digits: $.calendars.substituteChineseDigits( ['〇', '一', '二', '三', '四', '五', '六', '七', '八', '九'], ['', '十', '百', '千']) */ substituteChineseDigits: function (digits, powers) { return function (value) { var localNumber = ""; var power = 0; while (value > 0) { var units = value % 10; localNumber = (units === 0 ? "" : digits[units] + powers[power]) + localNumber; power++; value = Math.floor(value / 10); } if (localNumber.indexOf(digits[1] + powers[1]) === 0) { localNumber = localNumber.substr(1); } return localNumber || digits[0]; }; }, }); /** Generic date, based on a particular calendar. @class CDate @param {BaseCalendar} calendar The underlying calendar implementation. @param {number} year The year for this date. @param {number} month The month for this date. @param {number} day The day for this date. @return {CDate} The date object. @throws Error if an invalid date. */ function CDate(calendar, year, month, day) { this._calendar = calendar; this._year = year; this._month = month; this._day = day; if ( this._calendar._validateLevel === 0 && !this._calendar.isValid(this._year, this._month, this._day) ) { throw ( $.calendars.local.invalidDate || $.calendars.regionalOptions[""].invalidDate ).replace(/\{0\}/, this._calendar.local.name); } } /** Pad a numeric value with leading zeroes. @private @param {number} value The number to format. @param {number} length The minimum length. @return {string} The formatted number. */ function pad(value, length) { value = "" + value; return "000000".substring(0, length - value.length) + value; } $.extend(CDate.prototype, { /** Create a new date. @memberof CDate @param {CDate|number} [year] The date to copy or the year for the date (default to this date). @param {number} [month] The month for the date (if numeric <code>year</code> specified above). @param {number} [day] The day for the date (if numeric <code>year</code> specified above). @return {CDate} The new date. @throws Error if an invalid date. @example date.newDate() date.newDate(otherDate) date.newDate(2001, 1, 1) */ newDate: function (year, month, day) { return this._calendar.newDate( typeof year === "undefined" || year === null ? this : year, month, day ); }, /** Set or retrieve the year for this date. @memberof CDate @param {number} [year] The year for the date. @return {number|CDate} The date's year (if no parameter) or the updated date. @throws Error if an invalid date. @example date.year(2001) var year = date.year() */ year: function (year) { return arguments.length === 0 ? this._year : this.set(year, "y"); }, /** Set or retrieve the month for this date. @memberof CDate @param {number} [month] The month for the date. @return {number|CDate} The date's month (if no parameter) or the updated date. @throws Error if an invalid date. @example date.month(1) var month = date.month() */ month: function (month) { return arguments.length === 0 ? this._month : this.set(month, "m"); }, /** Set or retrieve the day for this date. @memberof CDate @param {number} [day] The day for the date. @return {number|CData} The date's day (if no parameter) or the updated date. @throws Error if an invalid date. @example date.day(1) var day = date.day() */ day: function (day) { return arguments.length === 0 ? this._day : this.set(day, "d"); }, /** Set new values for this date. @memberof CDate @param {number} year The year for the date. @param {number} month The month for the date. @param {number} day The day for the date. @return {CDate} The updated date. @throws Error if an invalid date. @example date.date(2001, 1, 1) */ date: function (year, month, day) { if (!this._calendar.isValid(year, month, day)) { throw ( $.calendars.local.invalidDate || $.calendars.regionalOptions[""].invalidDate ).replace(/\{0\}/, this._calendar.local.name); } this._year = year; this._month = month; this._day = day; return this; }, /** Determine whether this date is in a leap year. @memberof CDate @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not. @example if (date.leapYear()) ...*/ leapYear: function () { return this._calendar.leapYear(this); }, /** Retrieve the epoch designator for this date, e.g. BCE or CE. @memberof CDate @return {string} The current epoch. @example var epoch = date.epoch() */ epoch: function () { return this._calendar.epoch(this); }, /** Format the year, if not a simple sequential number. @memberof CDate @return {string} The formatted year. @example var year = date.formatYear() */ formatYear: function () { return this._calendar.formatYear(this); }, /** Retrieve the month of the year for this date, i.e. the month's position within a numbered year. @memberof CDate @return {number} The month of the year: <code>minMonth</code> to months per year. @example var month = date.monthOfYear() */ monthOfYear: function () { return this._calendar.monthOfYear(this); }, /** Retrieve the week of the year for this date. @memberof CDate @return {number} The week of the year: 1 to weeks per year. @example var week = date.weekOfYear() */ weekOfYear: function () { return this._calendar.weekOfYear(this); }, /** Retrieve the number of days in the year for this date. @memberof CDate @return {number} The number of days in this year. @example var days = date.daysInYear() */ daysInYear: function () { return this._calendar.daysInYear(this); }, /** Retrieve the day of the year for this date. @memberof CDate @return {number} The day of the year: 1 to days per year. @example var doy = date.dayOfYear() */ dayOfYear: function () { return this._calendar.dayOfYear(this); }, /** Retrieve the number of days in the month for this date. @memberof CDate @return {number} The number of days. @example var days = date.daysInMonth() */ daysInMonth: function () { return this._calendar.daysInMonth(this); }, /** Retrieve the day of the week for this date. @memberof CDate @return {number} The day of the week: 0 to number of days - 1. @example var dow = date.dayOfWeek() */ dayOfWeek: function () { return this._calendar.dayOfWeek(this); }, /** Determine whether this date is a week day. @memberof CDate @return {boolean} <code>true</code> if a week day, <code>false</code> if not. @example if (date.weekDay()) ... */ weekDay: function () { return this._calendar.weekDay(this); }, /** Retrieve additional information about this date. @memberof CDate @return {object} Additional information - contents depends on calendar. @example var info = date.extraInfo() */ extraInfo: function () { return this._calendar.extraInfo(this); }, /** Add period(s) to a date. @memberof CDate @param {number} offset The number of periods to adjust by. @param {string} period One of 'y' for years, 'm' for months, 'w' for weeks, 'd' for days. @return {CDate} The updated date. @example date.add(10, 'd') */ add: function (offset, period) { return this._calendar.add(this, offset, period); }, /** Set a portion of the date. @memberof CDate @param {number} value The new value for the period. @param {string} period One of 'y' for year, 'm' for month, 'd' for day. @return {CDate} The updated date. @throws Error if not a valid date. @example date.set(10, 'd') */ set: function (value, period) { return this._calendar.set(this, value, period); }, /** Compare this date to another date. @memberof CDate @param {CDate} date The other date. @return {number} -1 if this date is before the other date, 0 if they are equal, or +1 if this date is after the other date. @example if (date1.compareTo(date2) < 0) ... */ compareTo: function (date) { if (this._calendar.name !== date._calendar.name) { throw ( $.calendars.local.differentCalendars || $.calendars.regionalOptions[""].differentCalendars ) .replace(/\{0\}/, this._calendar.local.name) .replace(/\{1\}/, date._calendar.local.name); } var c = this._year !== date._year ? this._year - date._year : this._month !== date._month ? this.monthOfYear() - date.monthOfYear() : this._day - date._day; return c === 0 ? 0 : c < 0 ? -1 : +1; }, /** Retrieve the calendar backing this date. @memberof CDate @return {BaseCalendar} The calendar implementation. @example var cal = date.calendar() */ calendar: function () { return this._calendar; }, /** Retrieve the Julian date equivalent for this date, i.e. days since January 1, 4713 BCE Greenwich noon. @memberof CDate @return {number} The equivalent Julian date. @example var jd = date.toJD() */ toJD: function () { return this._calendar.toJD(this); }, /** Create a new date from a Julian date. @memberof CDate @param {number} jd The Julian date to convert. @return {CDate} The equivalent date. @example var date2 = date1.fromJD(jd) */ fromJD: function (jd) { return this._calendar.fromJD(jd); }, /** Convert this date to a standard (Gregorian) JavaScript Date. @memberof CDate @return {Date} The equivalent JavaScript date. @example var jsd = date.toJSDate() */ toJSDate: function () { return this._calendar.toJSDate(this); }, /** Create a new date from a standard (Gregorian) JavaScript Date. @memberof CDate @param {Date} jsd The JavaScript date to convert. @return {CDate} The equivalent date. @example var date2 = date1.fromJSDate(jsd) */ fromJSDate: function (jsd) { return this._calendar.fromJSDate(jsd); }, /** Convert to a string for display. @memberof CDate @return {string} This date as a string. */ toString: function () { return ( (this.year() < 0 ? "-" : "") + pad(Math.abs(this.year()), 4) + "-" + pad(this.month(), 2) + "-" + pad(this.day(), 2) ); }, }); /** Basic functionality for all calendars. Other calendars should extend this: <pre>OtherCalendar.prototype = new BaseCalendar();</pre> @class BaseCalendar */ function BaseCalendar() { this.shortYearCutoff = "+10"; } $.extend(BaseCalendar.prototype, { _validateLevel: 0, // "Stack" to turn validation on/off /** Create a new date within this calendar - today if no parameters given. @memberof BaseCalendar @param {CDate|number} year The date to duplicate or the year for the date. @param {number} [month] The month for the date (if numeric <code>year</code> specified above). @param {number} [day] The day for the date (if numeric <code>year</code> specified above). @return {CDate} The new date. @throws Error if not a valid date or a different calendar is used. @example var date = calendar.newDate(2014, 1, 26) var date2 = calendar.newDate(date1) var today = calendar.newDate() */ newDate: function (year, month, day) { if (typeof year === "undefined" || year === null) { return this.today(); } if (year.year) { this._validate( year, month, day, $.calendars.local.invalidDate || $.calendars.regionalOptions[""].invalidDate ); day = year.day(); month = year.month(); year = year.year(); } return new CDate(this, year, month, day); }, /** Create a new date for today. @memberof BaseCalendar @return {CDate} Today's date. @example var today = calendar.today() */ today: function () { return this.fromJSDate(new Date()); }, /** Retrieve the epoch designator for this date. @memberof BaseCalendar @param {CDate|number} year The date to examine or the year to examine. @return {string} The current epoch. @throws Error if an invalid year or a different calendar is used. @example var epoch = calendar.epoch(date) var epoch = calendar.epoch(2014) */ epoch: function (year) { var date = this._validate( year, this.minMonth, this.minDay, $.calendars.local.invalidYear || $.calendars.regionalOptions[""].invalidYear ); return date.year() < 0 ? this.local.epochs[0] : this.local.epochs[1]; }, /** Format the year, if not a simple sequential number @memberof BaseCalendar @param {CDate|number} year The date to format or the year to format. @return {string} The formatted year. @throws Error if an invalid year or a different calendar is used. @example var year = calendar.formatYear(date) var year = calendar.formatYear(2014) */ formatYear: function (year) { var date = this._validate( year, this.minMonth, this.minDay, $.calendars.local.invalidYear || $.calendars.regionalOptions[""].invalidYear ); return (date.year() < 0 ? "-" : "") + pad(Math.abs(date.year()), 4); }, /** Retrieve the number of months in a year. @memberof BaseCalendar @param {CDate|number} year The date to examine or the year to examine. @return {number} The number of months. @throws Error if an invalid year or a different calendar is used. @example var months = calendar.monthsInYear(date) var months = calendar.monthsInYear(2014) */ monthsInYear: function (year) { this._validate( year, this.minMonth, this.minDay, $.calendars.local.invalidYear || $.calendars.regionalOptions[""].invalidYear ); return 12; }, /** Calculate the month's ordinal position within the year - for those calendars that don't start at month 1! @memberof BaseCalendar @param {CDate|number} year The date to examine or the year to examine. @param {number} [month] The month to examine (if numeric <code>year</code> specified above). @return {number} The ordinal position, starting from <code>minMonth</code>. @throws Error if an invalid year/month or a different calendar is used. @example var pos = calendar.monthOfYear(date) var pos = calendar.monthOfYear(2014, 7) */ monthOfYear: function (year, month) { var date = this._validate( year, month, this.minDay, $.calendars.local.invalidMonth || $.calendars.regionalOptions[""].invalidMonth ); return ( ((date.month() + this.monthsInYear(date) - this.firstMonth) % this.monthsInYear(date)) + this.minMonth ); }, /** Calculate actual month from ordinal position, starting from <code>minMonth</code>. @memberof BaseCalendar @param {number} year The year to examine. @param {number} ord The month's ordinal position. @return {number} The month's number. @throws Error if an invalid year/month. @example var month = calendar.fromMonthOfYear(2014, 7) */ fromMonthOfYear: function (year, ord) { var m = ((ord + this.firstMonth - 2 * this.minMonth) % this.monthsInYear(year)) + this.minMonth; this._validate( year, m, this.minDay, $.calendars.local.invalidMonth || $.calendars.regionalOptions[""].invalidMonth ); return m; }, /** Retrieve the number of days in a year. @memberof BaseCalendar @param {CDate|number} year The date to examine or the year to examine. @return {number} The number of days. @throws Error if an invalid year or a different calendar is used. @example var days = calendar.daysInYear(date) var days = calendar.daysInYear(2014) */ daysInYear: function (year) { var date = this._validate( year, this.minMonth, this.minDay, $.calendars.local.invalidYear || $.calendars.regionalOptions[""].invalidYear ); return this.leapYear(date) ? 366 : 365; }, /** Retrieve the day of the year for a date. @memberof BaseCalendar @param {CDate|number} year The date to convert or the year to convert. @param {number} [month] The month to convert (if numeric <code>year</code> specified above). @param {number} [day] The day to convert (if numeric <code>year</code> specified above). @return {number} The day of the year: 1 to days per year. @throws Error if an invalid date or a different calendar is used. @example var doy = calendar.dayOfYear(date) var doy = calendar.dayOfYear(2014, 7, 1) */ dayOfYear: function (year, month, day) { var date = this._validate( year, month, day, $.calendars.local.invalidDate || $.calendars.regionalOptions[""].invalidDate ); return ( date.toJD() - this.newDate( date.year(), this.fromMonthOfYear(date.year(), this.minMonth), this.minDay ).toJD() + 1 ); }, /** Retrieve the number of days in a week. @memberof BaseCalendar @return {number} The number of days. @example var days = calendar.daysInWeek() */ daysInWeek: function () { return 7; }, /** Retrieve the day of the week for a date. @memberof BaseCalendar @param {CDate|number} year The date to examine or the year to examine. @param {number} [month] The month to examine (if numeric <code>year</code> specified above). @param {number} [day] The day to examine (if numeric <code>year</code> specified above). @return {number} The day of the week: 0 to number of days - 1. @throws Error if an invalid date or a different calendar is used. @example var dow = calendar.dayOfWeek(date) var dow = calendar.dayOfWeek(2014, 1, 26) */ dayOfWeek: function (year, month, day) { var date = this._validate( year, month, day, $.calendars.local.invalidDate || $.calendars.regionalOptions[""].invalidDate ); return (Math.floor(this.toJD(date)) + 2) % this.daysInWeek(); }, /** Retrieve additional information about a date. @memberof BaseCalendar @param {CDate|number} year The date to examine or the year to examine. @param {number} [month] The month to examine (if numeric <code>year</code> specified above). @param {number} [day] The day to examine (if numeric <code>year</code> specified above). @return {object} Additional information - content depends on calendar. @throws Error if an invalid date or a different calendar is used. @example var info = calendar.extraInfo(date) var info = calendar.extraInfo(2014, 1, 26) */ extraInfo: function (year, month, day) { this._validate( year, month, day, $.calendars.local.invalidDate || $.calendars.regionalOptions[""].invalidDate ); return {}; }, /** Add period(s) to a date. Cater for no year zero. @memberof BaseCalendar @param {CDate} date The starting date. @param {number} offset The number of periods to adjust by. @param {string} period One of 'y' for years, 'm' for months, 'w' for weeks, 'd' for days. @return {CDate} The updated date. @throws Error if a different calendar is used. @example calendar.add(date, 10, 'd') */ add: function (date, offset, period) { this._validate( date, this.minMonth, this.minDay, $.calendars.local.invalidDate || $.calendars.regionalOptions[""].invalidDate ); return this._correctAdd( date, this._add(date, offset, period), offset, period ); }, /** Add period(s) to a date. @memberof BaseCalendar @private @param {CDate} date The starting date. @param {number} offset The number of periods to adjust by. @param {string} period One of 'y' for years, 'm' for months, 'w' for weeks, 'd' for days. @return {number[]} The updated date as year, month, and day. */ _add: function (date, offset, period) { this._validateLevel++; var d; if (period === "d" || period === "w") { var jd = date.toJD() + offset * (period === "w" ? this.daysInWeek() : 1); d = date.calendar().fromJD(jd); this._validateLevel--; return [d.year(), d.month(), d.day()]; } try { var y = date.year() + (period === "y" ? offset : 0); var m = date.monthOfYear() + (period === "m" ? offset : 0); d = date.day(); var resyncYearMonth = function (calendar) { while (m < calendar.minMonth) { y--; m += calendar.monthsInYear(y); } var yearMonths = calendar.monthsInYear(y); while (m > yearMonths - 1 + calendar.minMonth) { y++; m -= yearMonths; yearMonths = calendar.monthsInYear(y); } }; if (period === "y") { if (date.month() !== this.fromMonthOfYear(y, m)) { // Hebrew m = this.newDate(y, date.month(), this.minDay).monthOfYear(); } m = Math.min(m, this.monthsInYear(y)); d = Math.min(d, this.daysInMonth(y, this.fromMonthOfYear(y, m))); } else if (period === "m") { resyncYearMonth(this); d = Math.min(d, this.daysInMonth(y, this.fromMonthOfYear(y, m))); } var ymd = [y, this.fromMonthOfYear(y, m), d]; this._validateLevel--; return ymd; } catch (e) { this._validateLevel--; throw e; } }, /** Correct a candidate date after adding period(s) to a date. Handle no year zero if necessary. @memberof BaseCalendar @private @param {CDate} date The starting date. @param {number[]} ymd The added date. @param {number} offset The number of periods to adjust by. @param {string} period One of 'y' for years, 'm' for months, 'w' for weeks, 'd' for days. @return {CDate} The updated date. */ _correctAdd: function (date, ymd, offset, period) { if (!this.hasYearZero && (period === "y" || period === "m")) { if ( ymd[0] === 0 || // In year zero date.year() > 0 !== ymd[0] > 0 ) { // Crossed year zero var adj = { y: [1, 1, "y"], m: [1, this.monthsInYear(-1), "m"], w: [this.daysInWeek(), this.daysInYear(-1), "d"], d: [1, this.daysInYear(-1), "d"], }[period]; var dir = offset < 0 ? -1 : +1; ymd = this._add(date, offset * adj[0] + dir * adj[1], adj[2]); } } return date.date(ymd[0], ymd[1], ymd[2]); }, /** Set a portion of the date. @memberof BaseCalendar @param {CDate} date The starting date. @param {number} value The new value for the period. @param {string} period One of 'y' for year, 'm' for month, 'd' for day. @return {CDate} The updated date. @throws Error if an invalid date or a different calendar is used. @example calendar.set(date, 10, 'd') */ set: function (date, value, period) { this._validate( date, this.minMonth, this.minDay, $.calendars.local.invalidDate || $.calendars.regionalOptions[""].invalidDate ); var y = period === "y" ? value : date.year(); var m = period === "m" ? value : date.month(); var d = period === "d" ? value : date.day(); if (period === "y" || period === "m") { d = Math.min(d, this.daysInMonth(y, m)); } return date.date(y, m, d); }, /** Determine whether a date is valid for this calendar. @memberof BaseCalendar @param {number} year The year to examine. @param {number} month The month to examine. @param {number} day The day to examine. @return {boolean} <code>true</code> if a valid date, <code>false</code> if not. @example if (calendar.isValid(2014, 2, 31)) ... */ isValid: function (year, month, day) { this._validateLevel++; var valid = this.hasYearZero || year !== 0; if (valid) { var date = this.newDate(year, month, this.minDay); valid = month >= this.minMonth && month - this.minMonth < this.monthsInYear(date) && day >= this.minDay && day - this.minDay < this.daysInMonth(date); } this._validateLevel--; return valid; }, /** Convert the date to a standard (Gregorian) JavaScript Date. @memberof BaseCalendar @param {CDate|number} year The date to convert or the year to convert. @param {number} [month] The month to convert (if numeric <code>year</code> specified above). @param {number} [day] The day to convert (if numeric <code>year</code> specified above). @return {Date} The equivalent JavaScript date. @throws Error if an invalid date or a different calendar is used. @example var jsd = calendar.toJSDate(date) var jsd = calendar.toJSDate(2014, 1, 26) */ toJSDate: function (year, month, day) { var date = this._validate( year, month, day, $.calendars.local.invalidDate || $.calendars.regionalOptions[""].invalidDate ); return $.calendars.instance().fromJD(this.toJD(date)).toJSDate(); }, /** Convert the date from a standard (Gregorian) JavaScript Date. @memberof BaseCalendar @param {Date} jsd The JavaScript date. @return {CDate} The equivalent calendar date. @example var date = calendar.fromJSDate(jsd) */ fromJSDate: function (jsd) { return this.fromJD($.calendars.instance().fromJSDate(jsd).toJD()); }, /** Check that a candidate date is from the same calendar and is valid. @memberof BaseCalendar @private @param {CDate|number} year The date to validate or the year to validate. @param {number} [month] The month to validate (if numeric <code>year</code> specified above). @param {number} [day] The day to validate (if numeric <code>year</code> specified above). @param {string} error Error message if invalid. @throws Error if an invalid date or a different calendar is used. */ _validate: function (year, month, day, error) { if (year.year) { if (this._validateLevel === 0 && this.name !== year.calendar().name) { throw ( $.calendars.local.differentCalendars || $.calendars.regionalOptions[""].differentCalendars ) .replace(/\{0\}/, this.local.name) .replace(/\{1\}/, year.calendar().local.name); } return year; } try { this._validateLevel++; if (this._validateLevel === 1 && !this.isValid(year, month, day)) { throw error.replace(/\{0\}/, this.local.name); } var date = this.newDate(year, month, day); this._validateLevel--; return date; } catch (e) { this._validateLevel--; throw e; } }, }); /** Implementation of the Proleptic Gregorian Calendar. See <a href=":http://en.wikipedia.org/wiki/Gregorian_calendar">http://en.wikipedia.org/wiki/Gregorian_calendar</a> and <a href="http://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar">http://en.wikipedia.org/wiki/Proleptic_Gregorian_calendar</a>. @class GregorianCalendar @augments BaseCalendar @param {string} [language=''] The language code (default English) for localisation. */ function GregorianCalendar(language) { this.local = this.regionalOptions[language] || this.regionalOptions[""]; } GregorianCalendar.prototype = new BaseCalendar(); $.extend(GregorianCalendar.prototype, { /** The calendar name. @memberof GregorianCalendar */ name: "Gregorian", /** Julian date of start of Gregorian epoch: 1 January 0001 CE. @memberof GregorianCalendar */ jdEpoch: 1721425.5, /** Days per month in a common year. @memberof GregorianCalendar */ daysPerMonth: [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31], /** <code>true</code> if has a year zero, <code>false</code> if not. @memberof GregorianCalendar */ hasYearZero: false, /** The minimum month number. @memberof GregorianCalendar */ minMonth: 1, /** The first month in the year. @memberof GregorianCalendar */ firstMonth: 1, /** The minimum day number. @memberof GregorianCalendar */ minDay: 1, /** Convert a number into a localised form. @callback CalendarsDigits @param {number} value The number to convert. @return {string} The localised number. @example digits: $.calendars.substituteDigits(['۰', '۱', '۲', '۳', '۴', '۵', '۶', '۷', '۸', '۹']) */ /** Localisations for the plugin. Entries are objects indexed by the language code ('' being the default US/English). Each object has the following attributes. @memberof GregorianCalendar @property {string} [name='Gregorian'] The calendar name. @property {string[]} [epochs=['BCE','CE']] The epoch names. @property {string[]} [monthNames=[...]] The long names of the months of the year. @property {string[]} [monthNamesShort=[...]] The short names of the months of the year. @property {string[]} [dayNames=[...]] The long names of the days of the week. @property {string[]} [dayNamesShort=[...]] The short names of the days of the week. @property {string[]} [dayNamesMin=[...]] The minimal names of the days of the week. @property {CalendarsDigits} [digits=null] Convert numbers to localised versions. @property {string} [dateFormat='mm/dd/yyyy'] The date format for this calendar. See the options on {@linkcode BaseCalendar.formatDate|formatDate} for details. @property {number} [firstDay=0] The number of the first day of the week, starting at 0. @property {boolean} [isRTL=false] <code>true</code> if this localisation reads right-to-left. */ regionalOptions: { // Localisations "": { name: "Gregorian", epochs: ["BCE", "CE"], monthNames: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December", ], monthNamesShort: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", ], dayNames: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", ], dayNamesShort: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"], dayNamesMin: ["Su", "Mo", "Tu", "We", "Th", "Fr", "Sa"], digits: null, dateFormat: "mm/dd/yyyy", firstDay: 0, isRTL: false, }, }, /** Determine whether this date is in a leap year. @memberof GregorianCalendar @param {CDate|number} year The date to examine or the year to examine. @return {boolean} <code>true</code> if this is a leap year, <code>false</code> if not. @throws Error if an invalid year or a different calendar is used. */ leapYear: function (year) { var date = this._validate( year, this.minMonth, this.minDay, $.calendars.local.invalidYear || $.calendars.regionalOptions[""].invalidYear ); year = date.year() + (date.year() < 0 ? 1 : 0); // No year zero return year % 4 === 0 && (year % 100 !== 0 || year % 400 === 0); }, /** Determine the week of the year for a date - ISO 8601. @memberof GregorianCalendar @param {CDate|number} year The date to examine or the year to examine. @param {number} [month] The month to examine (if numeric <code>year</code> specified above). @param {number} [day] The day to examine (if numeric <code>year</code> specified above). @return {number} The week of the year, starting from 1. @throws Error if an invalid date or a different calendar is used. */ weekOfYear: function (year, month, day) { // Find Thursday of this week starting on Monday var checkDate = this.newDate(year, month, day); checkDate.add(4 - (checkDate.dayOfWeek() || 7), "d"); return Math.floor((checkDate.dayOfYear() - 1) / 7) + 1; }, /** Retrieve the number of days in a month. @memberof GregorianCalendar @param {CDate|number} year The date to examine or the year of the month. @param {number} [month] The month (if numeric <code>year</code> specified above). @return {number} The number of days in this month. @throws Error if an invalid month/year or a different calendar is used. */ daysInMonth: function (year, month) { var date = this._validate( year, month, this.minDay, $.calendars.local.invalidMonth || $.calendars.regionalOptions[""].invalidMonth ); return ( this.daysPerMonth[date.month() - 1] + (date.month() === 2 && this.leapYear(date.year()) ? 1 : 0) ); }, /** Determine whether this date is a week day. @memberof GregorianCalendar @param {CDate|number} year The date to examine or the year to examine. @param {number} [month] The month to examine (if numeric <code>year</code> specified above). @param {number} [day] The day to examine (if numeric <code>year</code> specified above). @return {boolean} <code>true</code> if a week day, <code>false</code> if not. @throws Error if an invalid date or a different calendar is used. */ weekDay: function (year, month, day) { return (this.dayOfWeek(year, month, day) || 7) < 6; }, /** Retrieve the Julian date equivalent for this date, i.e. days since January 1, 4713 BCE Greenwich noon. @memberof GregorianCalendar @param {CDate|number} year The date to convert or the year to convert. @param {number} [month] The month to convert (if numeric <code>year</code> specified above). @param {number} [day] The day to convert (if numeric <code>year</code> specified above). @return {number} The equivalent Julian date. @throws Error if an invalid date or a different calendar is used. */ toJD: function (year, month, day) { var date = this._validate( year, month, day, $.calendars.local.invalidDate || $.calendars.regionalOptions[""].invalidDate ); year = date.year(); month = date.month(); day = date.day(); if (year < 0) { year++; } // No year zero // Jean Meeus algorithm, "Astronomical Algorithms", 1991 if (month < 3) { month += 12; year--; } var a = Math.floor(year / 100); var b = 2 - a + Math.floor(a / 4); return ( Math.floor(365.25 * (year + 4716)) + Math.floor(30.6001 * (month + 1)) + day + b - 1524.5 ); }, /** Create a new date from a Julian date. @memberof GregorianCalendar @param {number} jd The Julian date to convert. @return {CDate} The equivalent date. */ fromJD: function (jd) { // Jean Meeus algorithm, "Astronomical Algorithms", 1991 var z = Math.floor(jd + 0.5); var a = Math.floor((z - 1867216.25) / 36524.25); a = z + 1 + a - Math.floor(a / 4); var b = a + 1524; var c = Math.floor((b - 122.1) / 365.25); var d = Math.floor(365.25 * c); var e = Math.floor((b - d) / 30.6001); var day = b - d - Math.floor(e * 30.6001); var month = e - (e > 13.5 ? 13 : 1); var year = c - (month > 2.5 ? 4716 : 4715); if (year <= 0) { year--; } // No year zero return this.newDate(year, month, day); }, /** Convert this date to a standard (Gregorian) JavaScript Date. @memberof GregorianCalendar @param {CDate|number} year The date to convert or the year to convert. @param {number} [month] The month to convert (if numeric <code>year</code> specified above). @param {number} [day] The day to convert (if numeric <code>year</code> specified above). @return {Date} The equivalent JavaScript date. @throws Error if an invalid date or a different calendar is used. */ toJSDate: function (year, month, day) { var date = this._validate( year, month, day, $.calendars.local.invalidDate || $.calendars.regionalOptions[""].invalidDate ); var jsd = new Date(date.year(), date.month() - 1, date.day()); jsd.setHours(0); jsd.setMinutes(0); jsd.setSeconds(0); jsd.setMilliseconds(0); // Hours may be non-zero on daylight saving cut-over: // > 12 when midnight changeover, but then cannot generate // midnight datetime, so jump to 1AM, otherwise reset. jsd.setHours(jsd.getHours() > 12 ? jsd.getHours() + 2 : 0); return jsd; }, /** Create a new date from a standard (Gregorian) JavaScript Date. @memberof GregorianCalendar @param {Date} jsd The JavaScript date to convert. @return {CDate} The equivalent date. */ fromJSDate: function (jsd) { return this.newDate(jsd.getFullYear(), jsd.getMonth() + 1, jsd.getDate()); }, }); // Singleton manager $.calendars = new Calendars(); // Date template $.calendars.cdate = CDate; // Base calendar template $.calendars.baseCalendar = BaseCalendar; // Gregorian calendar implementation $.calendars.calendars.gregorian = GregorianCalendar; })(jQuery);