Contents

module MRZ
  class CheckDigit
    def check_calc(str)
      str = str.strip.upcase
      values = str.chars.map do |char|
        case char
          when '<'
            0
          when 'A'..'Z'
            char.ord - 65 + 10
          when '0'..'9'
            char.ord - 48
          else
            raise "Unexpected character '#{char}'"
          end
        end
      return (values.zip([7,3,1].cycle).map{|(v,w)| v * w}.reduce(:+) % 10).to_s
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
verified-1.3.3	lib/verified/parser/mrz/check_digit.rb
verified-1.3.1	lib/verified/parser/mrz/check_digit.rb
verified-1.3.0	lib/verified/parser/mrz/check_digit.rb