func ReadPixelFormat()

in vncclient/pixel_format.go [25:84]
45 lines of code
14 McCabe index (conditional complexity)

func ReadPixelFormat(r io.Reader, result *PixelFormat) error {
	var rawPixelFormat [16]byte
	if _, err := io.ReadFull(r, rawPixelFormat[:]); err != nil {
		return err
	}

	var pfBoolByte uint8
	brPF := bytes.NewReader(rawPixelFormat[:])
	if err := binary.Read(brPF, binary.BigEndian, &result.BPP); err != nil {
		return err
	}

	if err := binary.Read(brPF, binary.BigEndian, &result.Depth); err != nil {
		return err
	}

	if err := binary.Read(brPF, binary.BigEndian, &pfBoolByte); err != nil {
		return err
	}

	if pfBoolByte != 0 {
		// Big endian is true
		result.BigEndian = true
	}

	if err := binary.Read(brPF, binary.BigEndian, &pfBoolByte); err != nil {
		return err
	}

	if pfBoolByte != 0 {
		// True Color is true. So we also have to read all the color max & shifts.
		result.TrueColor = true

		if err := binary.Read(brPF, binary.BigEndian, &result.RedMax); err != nil {
			return err
		}

		if err := binary.Read(brPF, binary.BigEndian, &result.GreenMax); err != nil {
			return err
		}

		if err := binary.Read(brPF, binary.BigEndian, &result.BlueMax); err != nil {
			return err
		}

		if err := binary.Read(brPF, binary.BigEndian, &result.RedShift); err != nil {
			return err
		}

		if err := binary.Read(brPF, binary.BigEndian, &result.GreenShift); err != nil {
			return err
		}

		if err := binary.Read(brPF, binary.BigEndian, &result.BlueShift); err != nil {
			return err
		}
	}

	return nil
}