def read(self):
        """
        Read one character from buffer.

        :Returns:

            Current character or None if end of buffer is reached
        """

        if self._current >= len(self._data):
            return None
        self._current += 1
        return self._data[self._current - 1]
Read one character from buffer.

        :Returns:

            Current character or None if end of buffer is reached