Class: Date

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# File 'opal/stdlib/date.rb', line 285
def initialize(year = -4712, month = 1, day = 1, start = ITALY )
 %x{
 // Because of Gregorian reform calendar goes from 1582年10月04日 to 1582年10月15日.
 // All days in between end up as 4 october.
 if (year === 1582 && month === 10 && day > 4 && day < 15) {
 day = 4;
 }
 }
 @date = `new Date(year, month - 1, day)`
 @start = start
end

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# File 'opal/stdlib/date.rb', line 298
def start
 @start
end

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# File 'opal/stdlib/date.rb', line 535
def self._days_in_month(year, month)
 %x{
 var leap = ((year % 4 === 0 && year % 100 !== 0) || year % 400 === 0);
 return [31, (leap ? 29 : 28), 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month];
 }
end

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# File 'opal/stdlib/date/formatters.rb', line 2
def self.def_formatter(*args, **kwargs)
 Time .def_formatter (*args, **kwargs, on: self)
end

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# File 'opal/stdlib/date.rb', line 278
def gregorian_leap?(year)
 `(new Date(#{year}, 1, 29).getMonth()-1) === 0`
end

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# File 'opal/stdlib/date.rb', line 28
def parse(string, comp = true)
 %x{
 var current_date = new Date();
 var current_day = current_date.getDate(),
 current_month = current_date.getMonth(),
 current_year = current_date.getFullYear(),
 current_wday = current_date.getDay(),
 full_month_name_regexp = #{MONTHNAMES .compact.join('|')};
 function match1(match) { return match[1]; }
 function match2(match) { return match[2]; }
 function match3(match) { return match[3]; }
 function match4(match) { return match[4]; }
 // Converts passed short year (0..99)
 // to a 4-digits year in the range (1969..2068)
 function fromShortYear(fn) {
 return function(match) {
 var short_year = fn(match);
 if (short_year >= 69) {
 short_year += 1900;
 } else {
 short_year += 2000;
 }
 return short_year;
 }
 }
 // Converts month abbr (nov) to a month number
 function fromMonthAbbr(fn) {
 return function(match) {
 var abbr = fn(match).toLowerCase();
 return #{ABBR_MONTHNAMES }.indexOf(abbr) + 1;
 }
 }
 function toInt(fn) {
 return function(match) {
 var value = fn(match);
 return parseInt(value, 10);
 }
 }
 // Depending on the 'comp' value appends 20xx to a passed year
 function to2000(fn) {
 return function(match) {
 var value = fn(match);
 if (comp) {
 return value + 2000;
 } else {
 return value;
 }
 }
 }
 // Converts passed week day name to a day number
 function fromDayName(fn) {
 return function(match) {
 var dayname = fn(match),
 wday = #{DAYNAMES .map(&:downcase)}.indexOf(#{`dayname`.downcase});
 return current_day - current_wday + wday;
 }
 }
 // Converts passed month name to a month number
 function fromFullMonthName(fn) {
 return function(match) {
 var month_name = fn(match);
 return #{MONTHNAMES .compact.map(&:downcase)}.indexOf(#{`month_name`.downcase}) + 1;
 }
 }
 var rules = [
 {
 // DD as month day number
 regexp: /^(\d{2})$/,
 year: current_year,
 month: current_month,
 day: toInt(match1)
 },
 {
 // DDD as year day number
 regexp: /^(\d{3})$/,
 year: current_year,
 month: 0,
 day: toInt(match1)
 },
 {
 // MMDD as month and day
 regexp: /^(\d{2})(\d{2})$/,
 year: current_year,
 month: toInt(match1),
 day: toInt(match2)
 },
 {
 // YYDDD as year and day number in 1969--2068
 regexp: /^(\d{2})(\d{3})$/,
 year: fromShortYear(toInt(match1)),
 month: 0,
 day: toInt(match2)
 },
 {
 // YYMMDD as year, month and day in 1969--2068
 regexp: /^(\d{2})(\d{2})(\d{2})$/,
 year: fromShortYear(toInt(match1)),
 month: toInt(match2),
 day: toInt(match3)
 },
 {
 // YYYYDDD as year and day number
 regexp: /^(\d{4})(\d{3})$/,
 year: toInt(match1),
 month: 0,
 day: toInt(match2)
 },
 {
 // YYYYMMDD as year, month and day number
 regexp: /^(\d{4})(\d{2})(\d{2})$/,
 year: toInt(match1),
 month: toInt(match2),
 day: toInt(match3)
 },
 {
 // mmm YYYY
 regexp: /^([a-z]{3})[\s\.\/\-](\d{3,4})$/,
 year: toInt(match2),
 month: fromMonthAbbr(match1),
 day: 1
 },
 {
 // DD mmm YYYY
 regexp: /^(\d{1,2})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{3,4})$/i,
 year: toInt(match3),
 month: fromMonthAbbr(match2),
 day: toInt(match1)
 },
 {
 // mmm DD YYYY
 regexp: /^([a-z]{3})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{3,4})$/i,
 year: toInt(match3),
 month: fromMonthAbbr(match1),
 day: toInt(match2)
 },
 {
 // YYYY mmm DD
 regexp: /^(\d{3,4})[\s\.\/\-]([a-z]{3})[\s\.\/\-](\d{1,2})$/i,
 year: toInt(match1),
 month: fromMonthAbbr(match2),
 day: toInt(match3)
 },
 {
 // YYYY-MM-DD YYYY/MM/DD YYYY.MM.DD
 regexp: /^(\-?\d{3,4})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,
 year: toInt(match1),
 month: toInt(match2),
 day: toInt(match3)
 },
 {
 // YY-MM-DD
 regexp: /^(\d{2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\d{1,2})$/,
 year: to2000(toInt(match1)),
 month: toInt(match2),
 day: toInt(match3)
 },
 {
 // DD-MM-YYYY
 regexp: /^(\d{1,2})[\s\.\/\-](\d{1,2})[\s\.\/\-](\-?\d{3,4})$/,
 year: toInt(match3),
 month: toInt(match2),
 day: toInt(match1)
 },
 {
 // ddd
 regexp: new RegExp("^(" + #{DAYNAMES .join('|')} + ")$", 'i'),
 year: current_year,
 month: current_month,
 day: fromDayName(match1)
 },
 {
 // monthname daynumber YYYY
 regexp: new RegExp("^(" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](\\-?\\d{3,4})$", "i"),
 year: toInt(match4),
 month: fromFullMonthName(match1),
 day: toInt(match2)
 },
 {
 // monthname daynumber
 regexp: new RegExp("^(" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)", "i"),
 year: current_year,
 month: fromFullMonthName(match1),
 day: toInt(match2)
 },
 {
 // daynumber monthname YYYY
 regexp: new RegExp("^(\\d{1,2})(th|nd|rd)[\\s\\.\\/\\-](" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\-?\\d{3,4})$", "i"),
 year: toInt(match4),
 month: fromFullMonthName(match3),
 day: toInt(match1)
 },
 {
 // YYYY monthname daynumber
 regexp: new RegExp("^(\\-?\\d{3,4})[\\s\\.\\/\\-](" + full_month_name_regexp + ")[\\s\\.\\/\\-](\\d{1,2})(th|nd|rd)$", "i"),
 year: toInt(match1),
 month: fromFullMonthName(match2),
 day: toInt(match3)
 }
 ]
 var rule, i, match;
 for (i = 0; i < rules.length; i++) {
 rule = rules[i];
 match = rule.regexp.exec(string);
 if (match) {
 var year = rule.year;
 if (typeof(year) === 'function') {
 year = year(match);
 }
 var month = rule.month;
 if (typeof(month) === 'function') {
 month = month(match) - 1
 }
 var day = rule.day;
 if (typeof(day) === 'function') {
 day = day(match);
 }
 var result = new Date(year, month, day);
 // an edge case, JS can't handle 'new Date(1)', minimal year is 1970
 if (year >= 0 && year <= 1970) {
 result.setFullYear(year);
 }
 return #{wrap `result`};
 }
 }
 }
 raise ArgumentError, 'invalid date'
end

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# File 'opal/stdlib/date.rb', line 274
def today
 wrap `new Date()`
end

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# File 'opal/stdlib/date.rb', line 21
def wrap(native)
 instance = allocate
 `#{instance}.start = #{ITALY }`
 `#{instance}.date = #{native}`
 instance
end

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# File 'opal/stdlib/date.rb', line 409
def +(date)
 next_day(date)
end

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# File 'opal/stdlib/date.rb', line 400
def -(date)
 %x{
 if (date.date) {
 return Math.round((#{@date} - #{date}.date) / (1000 * 60 * 60 * 24));
 }
 }
 prev_day(date)
end

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# File 'opal/stdlib/date.rb', line 332
def <<(n)
 `if (!n.$$is_number) #{raise ::TypeError}`
 prev_month(n)
end

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# File 'opal/stdlib/date.rb', line 300
def <=>(other)
 %x{
 if (other.$$is_number) {
 return #{jd <=> other}
 }
 if (#{::Date  === other}) {
 var a = #{@date}, b = #{other}.date;
 if (!Opal.is_a(#{self}, #{::DateTime })) a.setHours(0, 0, 0, 0);
 if (!Opal.is_a(#{other}, #{::DateTime })) b.setHours(0, 0, 0, 0);
 if (a < b) {
 return -1;
 }
 else if (a > b) {
 return 1;
 }
 else {
 return 0;
 }
 } else {
 return nil;
 }
 }
end

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# File 'opal/stdlib/date.rb', line 326
def >>(n)
 `if (!n.$$is_number) #{raise ::TypeError}`
 self << -n
end

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# File 'opal/stdlib/json.rb', line 199
def as_json
 to_s
end

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# File 'opal/stdlib/date.rb', line 338
def clone
 date = Date .wrap (@date.dup)
 `date.start = #{@start}`
 date
end

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# File 'opal/stdlib/date.rb', line 522
def cwday
 `#{@date}.getDay() || 7`
end

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# File 'opal/stdlib/date.rb', line 526
def cweek
 %x{
 var d = new Date(#{@date});
 d.setHours(0,0,0);
 d.setDate(d.getDate()+4-(d.getDay()||7));
 return Math.ceil((((d-new Date(d.getFullYear(),0,1))/8.64e7)+1)/7);
 }
end

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# File 'opal/stdlib/date.rb', line 518
def downto(min, &block)
 step(min, -1, &block)
end

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# File 'opal/stdlib/date.rb', line 350
def jd
 %x{
 //Adapted from http://www.physics.sfasu.edu/astro/javascript/julianday.html
 var mm = #{@date}.getMonth() + 1,
 dd = #{@date}.getDate(),
 yy = #{@date}.getFullYear(),
 hr = 12, mn = 0, sc = 0,
 ggg, s, a, j1, jd;
 hr = hr + (mn / 60) + (sc/3600);
 ggg = 1;
 if (yy <= 1585) {
 ggg = 0;
 }
 jd = -1 * Math.floor(7 * (Math.floor((mm + 9) / 12) + yy) / 4);
 s = 1;
 if ((mm - 9) < 0) {
 s =- 1;
 }
 a = Math.abs(mm - 9);
 j1 = Math.floor(yy + s * Math.floor(a / 7));
 j1 = -1 * Math.floor((Math.floor(j1 / 100) + 1) * 3 / 4);
 jd = jd + Math.floor(275 * mm / 9) + dd + (ggg * j1);
 jd = jd + 1721027 + 2 * ggg + 367 * yy - 0.5;
 jd = jd + (hr / 24);
 return jd;
 }
end

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# File 'opal/stdlib/date.rb', line 386
def julian?
 `#{@date} < new Date(1582, 10 - 1, 15, 12)`
end

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# File 'opal/stdlib/date.rb', line 390
def new_start(start)
 new_date = clone
 `new_date.start = start`
 new_date
end

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# File 'opal/stdlib/date.rb', line 396
def next
 self + 1
end

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# File 'opal/stdlib/date.rb', line 426
def next_day(n = 1)
 `if (!n.$$is_number) #{raise ::TypeError}`
 prev_day(-n)
end

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# File 'opal/stdlib/date.rb', line 442
def next_month(n = 1)
 `if (!n.$$is_number) #{raise ::TypeError}`
 prev_month(-n)
end

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# File 'opal/stdlib/date.rb', line 452
def next_year(years = 1)
 `if (!years.$$is_number) #{raise ::TypeError}`
 prev_year(-years)
end

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# File 'opal/stdlib/date.rb', line 413
def prev_day(n = 1)
 %x{
 if (n.$$is_number) {
 var result = #{clone};
 result.date.setDate(#{@date}.getDate() - n);
 return result;
 }
 else {
 #{raise ::TypeError};
 }
 }
end

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# File 'opal/stdlib/date.rb', line 431
def prev_month(n = 1)
 %x{
 if (!n.$$is_number) #{raise ::TypeError}
 var result = #{clone}, date = result.date, cur = date.getDate();
 date.setDate(1);
 date.setMonth(date.getMonth() - n);
 date.setDate(Math.min(cur, #{Date ._days_in_month (`date.getFullYear()`, `date.getMonth()`)}));
 return result;
 }
end

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# File 'opal/stdlib/date.rb', line 447
def prev_year(years = 1)
 `if (!years.$$is_number) #{raise ::TypeError}`
 self.class.new(year - years, month, day)
end

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# File 'opal/stdlib/date.rb', line 492
def step(limit, step = 1, &block)
 steps_count = (limit - self).to_i
 steps = if steps_count * step < 0
 []
 elsif steps_count < 0
 (0..-steps_count).step(step.abs).map(&:-@).reverse
 else
 (0..steps_count).step(step.abs)
 end
 result = steps.map { |i| self + i }
 if block_given?
 result.each { |i| yield(i) }
 self
 else
 result
 end
end

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# File 'opal/stdlib/date.rb', line 457
def strftime(format = '')
 %x{
 if (format == '') {
 return #{to_s};
 }
 return #{@date.strftime(format)}}
end

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# File 'opal/stdlib/date.rb', line 480
def to_date
 self
end

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# File 'opal/stdlib/date.rb', line 484
def to_datetime
 DateTime .new (year, month, day)
end

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# File 'opal/stdlib/json.rb', line 195
def to_json
 to_s.to_json
end

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# File 'opal/stdlib/date.rb', line 488
def to_n
 @date
end

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# File 'opal/stdlib/date.rb', line 476
def to_time
 Time .new(year, month, day)
end

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# File 'opal/stdlib/date.rb', line 514
def upto(max, &block)
 step(max, 1, &block)
end