Module: NumHelper

Extended by:
NumHelper
Included in:
NumHelper
Defined in:
lib/rails_com/utils/num_helper.rb

Constant Summary collapse

NUM = 
['零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'].freeze
DEL = 
['', '拾', '佰', '仟'].freeze
SUB_DEL = 
['分', '角'].freeze
UNIT = 
['元', '万', '亿', '兆', '京'].freeze
DELIMITER_REGEX = 
/(\d)(?=(\d\d\d\d)+(?!\d))/.freeze

Instance Method Summary collapse

Instance Method Details

#to_parts(num_str, unit: [], del: []) ⇒ Object 



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# File 'lib/rails_com/utils/num_helper.rb', line 24

def to_parts(num_str, unit: [], del: [])
  han_arr = num_str.split(',').reverse.map.with_index do |str, index|
    str = str.each_char.map { |i| NUM[i.to_i] }
    xx = ''
    str.zip(del[0..str.size - 1].reverse) do |st, de|
      if st != '零' && de
        xx << st + de
      else
        xx << st unless xx.end_with?('零')
      end
    end
    if xx.chomp!('零')
      xx << (unit[index].to_s) << '零'
    else
      xx << (unit[index].to_s)
    end
    xx
  end

  han_arr.reverse.join
end

#to_rmb(num) ⇒ Object 



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# File 'lib/rails_com/utils/num_helper.rb', line 11

def to_rmb(num)
  left, right = num.to_s(:rounded, precision: 2, strip_insignificant_zeros: true, separator: '.', delimiter: ',', delimiter_pattern: DELIMITER_REGEX).split('.')

  left_str = to_parts(left, unit: UNIT, del: DEL)

  if right
    right_str = to_parts(right, del: SUB_DEL)
    left_str + right_str
  else
    left_str + '整'
  end
end