Totally awesome/useless LCD number maker.

gistfile1.txt

class LCDMaker
  def initialize(size)
    @size=size
  end
  def h_bar
    a = []
    a << ' '
    a << ('-' * @size)
    a << ' '
  end
  def empty
    a = []
    a << ' '
    a << (' ' * @size)
    a << ' '
  end
  def v_double
    a = []
    a << '|'
    a << (' ' * @size)
    a << '|'
  end
  def v_left
    a = []
    a << '|'
    a << (' ' * @size)
    a << ' '
  end
  def v_right
    a = []
    a << ' '
    a << (' ' * @size)
    a << '|'
  end
  def generate_number(top, top_box, middle, bottom_box, bottom)
    a = []
    a << self.send(top)
    @size.times { a << self.send(top_box) }
    a << self.send(middle)
    @size.times { a << self.send(bottom_box) }
    a << self.send(bottom)
  end
  def generate_n(n)
    case n
    when 1
      generate_number :empty, :v_right, :empty, :v_right, :empty
    when 2
      generate_number :h_bar, :v_right, :h_bar, :v_left, :h_bar
    when 3
      generate_number :h_bar, :v_right, :h_bar, :v_right, :h_bar
    when 4
      generate_number :empty, :v_double, :h_bar, :v_right, :empty
    when 5
      generate_number :h_bar, :v_left, :h_bar, :v_right, :h_bar
    when 6
      generate_number :h_bar, :v_left, :h_bar, :v_double, :h_bar
    when 7
      generate_number :h_bar, :v_right, :empty, :v_right, :empty
    when 8
      generate_number :h_bar, :v_double, :h_bar, :v_double, :h_bar
    when 9
      generate_number :h_bar, :v_double, :h_bar, :v_right, :empty
    when 0
      generate_number :h_bar, :v_double, :empty, :v_double, :h_bar
    else
      raise ArgumentError
    end
  end
  def format(number)
    raise ArgumentError unless number.is_a?(Numeric)
    character_arrays = number.to_s.split('').map { |n| generate_n(n.to_i) }
    first_char = character_arrays.shift
    char_matricies = first_char.zip(*character_arrays)
    output = ''
    char_matricies.each do |char_lines|
      output << char_lines.map { |cl| cl.join }.join
      output << "\n"
    end
    output
  end
end

puts LCDMaker.new(ARGV.first.to_i).format(1234567890)