示例#1
0
// WriteTo writes the length and contents of the engine to w.
func (s *Store) WriteTo(w io.Writer) (n int64, err error) {
	tx, err := s.db.Begin(false)
	if err != nil {
		return 0, err
	}
	defer tx.Rollback()

	// Set content length header, if an HTTP response writer.
	if w, ok := w.(http.ResponseWriter); ok {
		w.Header().Set("Content-Length", strconv.FormatInt(tx.Size(), 10))
	}

	// Write data.
	return tx.WriteTo(w)
}