Module: YaKansuji::Formatter::JudicH

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

Overview

Formatter for Jpanese judicial style kansuji (arabic numerals version)

Class Method Summary collapse

Class Method Details

.call(num, _options = {}) ⇒ Object

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# File 'lib/ya_kansuji/formatter/judic_h.rb', line 8

def call(num, _options = {})
  return '０' if num.zero?

  ret = ''
  head = true
  (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 head
      ret << (i4.to_s + unit4)
    else
      ret << (('%04d' % i4) + unit4)
    end
    head = false
  end
  ret.tr('0-9', '０-９')
end