Function ReadHeader

csup/header.go:68–82

(r io.ReaderAt)

}

func ReadHeader(r io.ReaderAt) (Header, error) {
	var bytes [HeaderSize]byte
	cc, err := r.ReadAt(bytes[:], 0)
	if err != nil {
		return Header{}, err
	}
	if cc < HeaderSize {
		return Header{}, fmt.Errorf("short CSUP file: %d bytes read", cc)
	}
	var h Header
	if err := h.Deserialize(bytes[:]); err != nil {
		return Header{}, err
	}
	return h, nil
}