Module: HolidayJapan

Defined in:
lib/holiday_japan.rb

Constant Summary collapse

VERSION = 
"1.4.4"
WEEK1 = 
1
WEEK2 = 
8
WEEK3 = 
15
WEEK4 = 
22
INF = 
(defined? Float::INFINITY) ? Float::INFINITY : 1e16
DATA =

祝日データ: 1948年7月20日以降で有効

[
  ["元日",        [1949..INF ,  1,   1 ]],
  ["成人の日",    [2000..INF ,  1, [WEEK2,MON]],
                  [1949..1999,  1,  15 ]],
  ["建国記念の日",[1967..INF ,  2,  11 ]],
  ["昭和の日",    [2007..INF ,  4,  29 ]],
  ["憲法記念日",  [1949..INF ,  5,   3 ]],
  ["みどりの日",  [2007..INF ,  5,   4 ],
                  [1989..2006,  4,  29 ]],
  ["こどもの日",  [1949..INF ,  5,   5 ]],
  ["海の日",      [2020,        7,  23 ],
                  [2021,        7,  22 ],
                  [2003..INF,  7, [WEEK3,MON]],
                  [1996..2002,  7,  20 ]],
  ["山の日",      [2020,        8,  10 ],
                  [2021      ,  8,   8 ],
                  [2016..INF ,  8,  11 ]],
  ["敬老の日",    [2003..INF ,  9, [WEEK3,MON]],
                  [1966..2002,  9,  15 ]],
  ["体育の日",    [2000..2019, 10, [WEEK2,MON]],
                  [1966..1999, 10,  10 ]],
  ["スポーツの日",[2020,        7,  24 ],
                  [2021,        7,  23 ],
                  [2022..INF , 10, [WEEK2,MON]]],
  ["文化の日",    [1948..INF , 11,   3 ]],
  ["勤労感謝の日",[1948..INF , 11,  23 ]],
  ["天皇誕生日",  [2020..INF ,  2,  23 ],
                  [1989..2018, 12,  23 ],
                  [1949..1988,  4,  29 ]],
  ["春分の日",
   [1980..2099,  3, proc{|y|(20.8431+0.242194*(y-1980)).to_i-((y-1980)/4.0).to_i} ],
   [1949..1979,  3, proc{|y|(20.8357+0.242194*(y-1980)).to_i-((y-1983)/4.0).to_i} ],
   [2100..2150,  3, proc{|y|(21.8510+0.242194*(y-1980)).to_i-((y-1980)/4.0).to_i} ],
  ],
  ["秋分の日" ,
   [1980..2099,  9, proc{|y|(23.2488+0.242194*(y-1980)).to_i-((y-1980)/4.0).to_i} ],
   [1948..1979,  9, proc{|y|(23.2588+0.242194*(y-1980)).to_i-((y-1983)/4.0).to_i} ],
   [2100..2150,  9, proc{|y|(24.2488+0.242194*(y-1980)).to_i-((y-1980)/4.0).to_i} ],
  ],
  ["即位礼正殿の儀",            [2019, 10, 22 ],
                                [1990, 11, 12 ]],
  ["天皇の即位の日",            [2019,  5,  1 ]],
  ["皇太子徳仁親王の結婚の儀",  [1993,  6,  9 ]],
  ["昭和天皇の大喪の礼",        [1989,  2, 24 ]],
  ["皇太子明仁親王の結婚の儀",  [1959,  4, 10 ]]
]
TABLE = 
{}
FURIKAE_START = 
Date.new(1973,4,12).freeze

Class Method Summary collapse

Class Method Details

._print_year(year) ⇒ Object 



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# File 'lib/holiday_japan.rb', line 188

def _print_year(year)
  puts "listing year #{year}..."
  list_year(year).each do |y|
    puts "#{y[0].strftime('%Y-%m-%d %a')} #{y[1]}"
  end
end

.between(from_date, to_date) ⇒ Object 



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# File 'lib/holiday_japan.rb', line 150

def between(from_date,to_date)
  case from_date
  when String
    from_date = Date.parse(from_date)
  when Integer
    from_date = Date.new(from_date,1,1)
  when Date
  else
    raise ArgumentError, "invalid type fpr from_date"
  end
  case to_date
  when String
    to_date = Date.parse(to_date)
  when Integer
    to_date = Date.new(to_date,12,31)
  when Date
  else
    raise ArgumentError, "invalid type fpr to_date"
  end
  if from_date > to_date
    raise ArgumentError, "to_date is earlier than from_date"
  end
  y1 = from_date.year
  y2 = to_date.year
  if y1 == y2
    result = hash_year(y1).select{|d,n| d >= from_date && d <= to_date}
  else
    result = hash_year(y1).select{|d,n| d >= from_date}
    y = y1 + 1
    while y < y2
      result.merge!(hash_year(y))
      y += 1
    end
    hash_year(y).each{|d,n| result[d]=n if d <= to_date}
  end
  result
end

.check(date) ⇒ Object 



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# File 'lib/holiday_japan.rb', line 136

def check(date)
  !HolidayJapan.name(date).nil?
end

.create_table(y) ⇒ Object 



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# File 'lib/holiday_japan.rb', line 95

def create_table(y)
  h={}
  a=[]
  # list holidays
  DATA.each do |x|
    if d = holiday_date(y,x)
      h[d] = x[0]
      a << d
    end
  end
  # compensating holiday
  if y >= 2007
    a.each do |d|
      if d.wday==SUN
        d+=1 while h[d]
        h[d] = "振替休日"
      end
    end
  elsif y >= 1973
    a.each do |d|
      if d.wday==SUN and d>=FURIKAE_START
        h[d+1] = "振替休日"
      end
    end
  end
  # consecutive holiday
  if y >= 1986
    a.each do |d|
      if h[d+2] and !h[d+1] and d.wday!=SAT
        h[d+1] = "国民の休日"
      end
    end
  end
  Hash[h.sort_by{|d,| d}].freeze
end

.hash_year(year) ⇒ Object 



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# File 'lib/holiday_japan.rb', line 146

def hash_year(year)
  TABLE[year] ||= create_table(year)
end

.holiday_date(year, data) ⇒ Object 



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# File 'lib/holiday_japan.rb', line 72

def holiday_date(year,data)
  data.each do |item|
    next if item.kind_of?(String)
    year_range,mon,day = *item
    if year_range === year
      case day
      when Integer
        # skip
      when Array
        day0,wday = day
        wday0 = Date.new(year,mon,day0).wday
        day = day0+(wday-wday0+7)%7
      when Proc
        day = day.call(year)
      else
        raise "invalid holiday data"
      end
      return Date.new( year, mon, day )
    end
  end
  nil
end

.list_year(year) ⇒ Object 



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# File 'lib/holiday_japan.rb', line 140

def list_year(year)
  year = Integer(year)
  TABLE[year] ||= create_table(year)
  TABLE[year].sort_by{|x| x[0]}
end

.name(date) ⇒ Object 



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# File 'lib/holiday_japan.rb', line 131

def name(date)
  y = date.year
  (TABLE[y] ||= create_table(y))[date]
end

.print_between(from_date, to_date) ⇒ Object 



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# File 'lib/holiday_japan.rb', line 206

def print_between(from_date,to_date)
  between(from_date,to_date).each do |y|
    puts "#{y[0].strftime('%Y-%m-%d %a')} #{y[1]}"
  end
end

.print_year(year) ⇒ Object 



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# File 'lib/holiday_japan.rb', line 195

def print_year(year)
  case year
  when Range
    year.each do |y|
      _print_year(y)
    end
  else
    _print_year(year)
  end
end