Module: YaKansuji::Formatter::Simple

Defined in:
lib/ya_kansuji/formatter/simple.rb

Class Method Summary collapse

Class Method Details

.call(num, _options = {}) ⇒ Object 



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# File 'lib/ya_kansuji/formatter/simple.rb', line 9

def call(num, _options = {})
  return '零' if num.zero?

  ret = ''
  (UNIT_EXP4.reverse + ['']).each_with_index do |unit4, ridx4|
    i4 = (num / 10_000**(UNIT_EXP4.size - ridx4)).to_i % 10_000
    next if i4.zero?

    if i4 == 1
      ret += "一#{unit4}"
      next
    end
    (UNIT_EXP3.reverse + ['']).each_with_index do |unit3, ridx3|
      i3 = (i4 / 10**(UNIT_EXP3.size - ridx3)).to_i % 10
      next if i3.zero?

      if i3 == 1 && unit3 != ''
        ret += unit3
      else
        ret += i3.to_s.tr('123456789', '一二三四五六七八九') + unit3
      end
    end
    ret += unit4
  end
  ret
end