class BitIO
  def initialize(data)
    @data = data
    @byte_offset = 0
    @bit_offset = 0
  end
  def getBit
    if (@data.length < @byte_offset)
      return -1;
    end
p @data
#    byte = @data[@byte_offset]
    byte = @data[0]
p byte
    bit = (byte >> (7 - @bit_offset)) & 1 # Oops
    if @bit_offset < 8
      @bit_offset  = @bit_offset  + 1
    else
      @byte_offset = @byte_offset + 1
      @bit_offset = 0
    end
    bit
  end
end

data = "foobaabaz"
$io = BitIO.new(data)

bit = $io.getBit()
printf("%d\n", bit)