class CharDet::CodingStateMachine

def get_coding_state_machine
  return @model['name']
end

def get_current_charlen
  return @currentCharLen
end

def initialize(sm)
  @model = sm
  @currentBytePos = 0
  @currentCharLen = 0
  reset()
end

def next_state(c)
  # for each byte we get its class
  # if it is first byte, we also get byte length
  b = c.bytes.first
  byteCls = @model['classTable'][b]
  if @currentState == EStart
    @currentBytePos = 0
    @currentCharLen = @model['charLenTable'][byteCls]
  end
  # from byte's class and stateTable, we get its next state
  @currentState = @model['stateTable'][@currentState * @model['classFactor'] + byteCls]
  @currentBytePos += 1
  return @currentState
end

def reset
  @currentState = EStart
end