Class: Holidays::DateCalculator::LunarDate

Inherits:
Object
  • Object
show all
Defined in:
lib/holidays/date_calculator/lunar_date.rb

Overview

Copied from github.com/sunsidew/ruby_lunardate Graciously allowed by JeeWoong Yang (github.com/sunsidew)

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#day ⇒ Object

Returns the value of attribute day.



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# File 'lib/holidays/date_calculator/lunar_date.rb', line 6

def day
  @day
end

#month ⇒ Object

Returns the value of attribute month.



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# File 'lib/holidays/date_calculator/lunar_date.rb', line 6

def month
  @month
end

#year ⇒ Object

Returns the value of attribute year.



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# File 'lib/holidays/date_calculator/lunar_date.rb', line 6

def year
  @year
end

Instance Method Details

#lunardays_for_type(month_type) ⇒ Object 



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# File 'lib/holidays/date_calculator/lunar_date.rb', line 27

def lunardays_for_type(month_type)
  LUNARDAYS_FOR_MONTHTYPE[month_type]
end

#to_s ⇒ Object 



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# File 'lib/holidays/date_calculator/lunar_date.rb', line 31

def to_s
  format('%4d%02d%02d', year, month, day)
end

#to_solar(year, month, day, region) ⇒ Object 



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# File 'lib/holidays/date_calculator/lunar_date.rb', line 8

def to_solar(year, month, day, region)
  days = 0
  year_diff = year - 1900
  year_info = CALENDAR_YEAR_INFO_MAP[region]

  year_diff.times do |year_idx|
    days += year_info[year_idx][0]
  end

  (month - 1).times do |month_idx|
    total, _normal, _leap = lunardays_for_type(year_info[year_diff][month_idx + 1])
    days += total
  end

  days += (day - 1)

  SOLAR_START_DATE + days
end