def seek()

in server/scripts/cloudstorage/storage_api.py [0:0]

• 16 lines of code
• 5 McCabe index (conditional complexity)

  def seek(self, offset, whence=os.SEEK_SET):
    """Set the file's current offset.

    Note if the new offset is out of bound, it is adjusted to either 0 or EOF.

    Args:
      offset: seek offset as number.
      whence: seek mode. Supported modes are os.SEEK_SET (absolute seek),
        os.SEEK_CUR (seek relative to the current position), and os.SEEK_END
        (seek relative to the end, offset should be negative).

    Raises:
      IOError: When this buffer is closed.
      ValueError: When whence is invalid.
    """
    self._check_open()

    self._buffer.reset()
    self._buffer_future = None

    if whence == os.SEEK_SET:
      self._offset = offset
    elif whence == os.SEEK_CUR:
      self._offset += offset
    elif whence == os.SEEK_END:
      self._offset = self._file_size + offset
    else:
      raise ValueError('Whence mode %s is invalid.' % str(whence))

    self._offset = min(self._offset, self._file_size)
    self._offset = max(self._offset, 0)
    if self._remaining():
      self._request_next_buffer()