Class: TaxJp::Gengou

Inherits:
Object
  • Object
show all
Defined in:
lib/tax_jp/gengou.rb

Constant Summary collapse

@@_gengou = 
TaxJp::Utils.load_yaml('元号.yml')

Class Method Summary collapse

Class Method Details

.to_seireki(gengou, date_jp) ⇒ Object 



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# File 'lib/tax_jp/gengou.rb', line 7

def self.to_seireki(gengou, date_jp)
  target_gengou = @@_gengou.invert.keys.find{|start_gengou| start_gengou == gengou.to_s }
  return nil unless target_gengou

  start_date = @@_gengou.invert[target_gengou]
  Date.new(start_date.year + date_jp.year - 1, date_jp.month, date_jp.day)
end

.to_wareki(date, only_date: false, format: '%y年%m月%d日') ⇒ Object 



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# File 'lib/tax_jp/gengou.rb', line 15

def self.to_wareki(date, only_date: false, format: '%y年%m月%d日')
  return nil unless date.present?

  date = TaxJp::Utils.convert_to_date(date)

  target_date = nil
  @@_gengou.keys.each do |start_date|
    target_date = TaxJp::Utils.convert_to_date(start_date)
    break if date >= target_date
  end

  return nil unless target_date

  target_date = Date.strptime(target_date)
  year, month, day = *(date.split('-').map{|x| x.to_i})
  year_jp = year - target_date.year + 1

  ret = Date.new(year_jp, month, day)
  if only_date
    ret = ret.strftime(format)
  else
    gengou  = @@_gengou[target_date]
    year_jp = year_jp == 1 ? '元' : year_jp.to_s
    ret = ret.strftime(format.gsub('%y', "#{gengou}#{year_jp}"))
  end

  ret
end