hodor6

hodor6.go

func Process(w io.Writer, r io.Reader) error {
	var buf, rbuf bytes.Buffer
	for {
		_, err := io.CopyN(&buf, r, DefaultChunkSize)
		if err != nil && err != io.EOF {
			return err
		}

		if rerr := Replace(buf.Bytes(), []byte("hodor"), []byte("hold the door"), -1, &rbuf); rerr != nil {
			return rerr
		}

		buf.Reset()

		if _, werr := w.Write(rbuf.Bytes()); werr != nil {
			return werr
		}

		if err == io.EOF {
			return nil
		}
	}
}