}

func (z *reader) Read(p []byte) (int, error) {
	if z.err != nil {
		return 0, z.err
	}

	var n int
	n, z.err = z.decompressor.Read(p)
	z.digest.Write(p[0:n])
	if z.err != io.EOF {
		// In the normal case we return here.
		return n, z.err
	}

	// Finished file; check checksum.
	if _, err := io.ReadFull(z.r, z.scratch[0:4]); err != nil {
		if err == io.EOF {
			err = io.ErrUnexpectedEOF
		}
		z.err = err

		}
		var id64 int64
		switch k {
		case paxPath:
			hdr.Name = v
		case paxLinkpath:
			hdr.Linkname = v
		case paxUname:
			hdr.Uname = v
		case paxGname:
			hdr.Gname = v
		case paxUid:
			id64, err = strconv.ParseInt(v, 10, 64)
			hdr.Uid = int(id64) // Integer overflow possible
		case paxGid:
			id64, err = strconv.ParseInt(v, 10, 64)

			r.last = decoderInvalidCode
			continue
		case code == r.eof:
			r.err = io.EOF
			break loop
		case code <= r.hi:
			c, i := code, len(r.output)-1
			if code == r.hi && r.last != decoderInvalidCode {
				// code == hi is a special case which expands to the last expansion
				// followed by the head of the last expansion. To find the head, we walk
				// the prefix chain until we find a literal code.
				c = r.last