JAN2EAN.rb

gistfile1.rb

def genFontStr13(str)
  if (str =~ /^\d{13}$/).nil? then
    return nil
  end
  table = ["AAAAAA", "AABABB", "AABBAB", "AABBBA", "ABAABB", "ABBAAB", "ABBBAA", "ABABAB", "ABABBA", "ABBABA"]
  first = str[0,1]
  first6 = str[1,6]
  last6 = str[7,6]
  table2 =  table[first.to_i]
  result = first

  first6.chars.each_with_index do |char, i|
    target = table2[i, 1]
    if target == 'A' then
      result += (65 + char.to_i).chr
    elsif target == 'B' then
      result += (75 + char.to_i).chr
    end
  end
  result += "*"

  last6.chars.each_with_index do |char, i|
    result += (97+char.to_i).chr
  end
  result += "+"
  return result
end

def genFontStr8(str)
  if (str =~ /^\d{8}$/).nil? then
    return nil
  end
  first6 = str[0,4]
  last6 = str[4,4]
  result = ":"

  first6.chars.each_with_index do |char, i|
      result += (65 + char.to_i).chr
  end
  result += "*"

  last6.chars.each_with_index do |char, i|
    result += (97+char.to_i).chr
  end
  result += "+"
  return result
end

t1 = genFontStr13("1234")
t2 = genFontStr13("4569951116179")

t3 = genFontStr8("123")
t4 = genFontStr8("")