Module: YaKansuji::Formatter::Lawyer

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

Overview

Formatter for Jpanese lawyer style kansuji

Class Method Summary collapse

Class Method Details

.call(num, _options = {}) ⇒ Object 



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# File 'lib/ya_kansuji/formatter/lawyer.rb', line 10

def call(num, _options = {})
  int, frac = Formatter.split_fraction(num)
  frac.empty? ? frac_part = nil : frac_part = ".#{frac.join}"
  return frac_part ? "0#{frac_part}" : '0' if int.zero?

  ret = +''
  chunks = Formatter.split_by_unit4(int)
  (chunks.size - 1).downto(0) do |idx4|
    i4 = chunks[idx4]
    next if i4.zero? && !(idx4.zero? && frac_part)

    unit4 = Formatter::UNIT4_UNITS[idx4]
    if i4 == 1
      ret << "1#{unit4}"
      next
    end

    ret << ((i4 >= 1000 ? "#{i4.to_s[0]},#{i4.to_s[1..-1]}" : i4.to_s) + unit4)
  end
  ret << frac_part if frac_part
  ret
end