func()

in image/image.go [506:570]

• 55 lines of code
• 11 McCabe index (conditional complexity)

func (i *Image) WritePlusOffsets(w io.Writer) (ImageOffsets, error) {
	offs := ImageOffsets{}
	offset := 0

	offs.Header = offset

	err := binary.Write(w, binary.LittleEndian, &i.Header)
	if err != nil {
		return offs, errors.Wrapf(err, "failed to write image header")
	}
	offset += IMAGE_HEADER_SIZE

	err = binary.Write(w, binary.LittleEndian, i.Pad)
	if err != nil {
		return offs, errors.Wrapf(err, "failed to write image padding")
	}
	offset += len(i.Pad)

	offs.Body = offset
	size, err := w.Write(i.Body)
	if err != nil {
		return offs, errors.Wrapf(err, "failed to write image body")
	}
	offset += size

	if i.Header.ProtSz > 0 {
		protTrailer := i.ProtTrailer()
		offs.ProtTrailer = offset
		err = binary.Write(w, binary.LittleEndian, &protTrailer)
		if err != nil {
			return offs, errors.Wrapf(err, "failed to write image trailer")
		}
		offset += IMAGE_TRAILER_SIZE

		for _, tlv := range i.ProtTlvs {
			offs.ProtTlvs = append(offs.ProtTlvs, offset)
			size, err := tlv.Write(w)
			if err != nil {
				return offs, errors.Wrapf(err, "failed to write image TLV")
			}
			offset += size
		}
	}

	trailer := i.Trailer()
	offs.Trailer = offset
	err = binary.Write(w, binary.LittleEndian, &trailer)
	if err != nil {
		return offs, errors.Wrapf(err, "failed to write image trailer")
	}
	offset += IMAGE_TRAILER_SIZE

	for _, tlv := range i.Tlvs {
		offs.Tlvs = append(offs.Tlvs, offset)
		size, err := tlv.Write(w)
		if err != nil {
			return offs, errors.Wrapf(err, "failed to write image TLV")
		}
		offset += size
	}

	offs.TotalSize = offset

	return offs, nil
}