Function NewObjectFromHeader

csup/object.go:42–56

(r io.ReaderAt, hdr Header)

}

func NewObjectFromHeader(r io.ReaderAt, hdr Header) (*Object, error) {
	cctx := NewContext()
	if err := cctx.readMeta(io.NewSectionReader(r, HeaderSize, int64(hdr.MetaSize))); err != nil {
		return nil, err
	}
	if hdr.Root >= uint32(len(cctx.values)) {
		return nil, fmt.Errorf("CSUP root ID %d larger than values table (len %d)", hdr.Root, len(cctx.values))
	}
	cctx.subtypesReader = io.NewSectionReader(r, int64(HeaderSize+hdr.MetaSize), int64(hdr.TypeSize))
	return &Object{
		cctx:     cctx,
		readerAt: io.NewSectionReader(r, int64(HeaderSize+hdr.MetaSize+hdr.TypeSize), int64(hdr.DataSize)),
		header:   hdr,
	}, nil
}

func (o *Object) Close() error {
	if closer, ok := o.readerAt.(io.Closer); ok {