Mercurial > gemma
view pkg/mesh/meshserialize.go @ 5677:a57be8bfb6ea sr-v2
More suited file names.
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
---|---|
date | Sun, 11 Feb 2024 09:51:21 +0100 |
parents | pkg/mesh/loader.go@d56e043bbbca |
children | 4abbb62d2bed |
line wrap: on
line source
// This is Free Software under GNU Affero General Public License v >= 3.0 // without warranty, see README.md and license for details. // // SPDX-License-Identifier: AGPL-3.0-or-later // License-Filename: LICENSES/AGPL-3.0.txt // // Copyright (C) 2018 by via donau // – Österreichische Wasserstraßen-Gesellschaft mbH // Software engineering by Intevation GmbH // // Author(s): // * Sascha L. Teichmann <sascha.teichmann@intevation.de> package mesh import ( "bufio" "bytes" "compress/gzip" "encoding/binary" "errors" "fmt" ) const magicHeader = "SR3D" // Bytes serializes this tree to a byte slice. func (s *STRTree) Bytes() ([]byte, error) { var buf bytes.Buffer w, err := gzip.NewWriterLevel(&buf, gzip.BestSpeed) if err != nil { return nil, err } if err := s.serializeV1(w); err != nil { return nil, err } if err := w.Close(); err != nil { return nil, err } return buf.Bytes(), nil } // FromBytes restores a STRTree from a binary representation. func (s *STRTree) FromBytes(data []byte, version *int64) error { r, err := gzip.NewReader(bytes.NewReader(data)) if err != nil { return err } return s.deserialize(bufio.NewReader(r), version) } func (s *STRTree) deserialize(r *bufio.Reader, version *int64) error { header, err := r.Peek(8) if err != nil { return err } if bytes.HasPrefix(header, []byte(magicHeader)) { realVersion := int64(binary.LittleEndian.Uint32(header[4:])) if version != nil && realVersion != *version { return fmt.Errorf("sounding result version mismatch: Have %d expect %d", realVersion, *version) } return s.deserializeVn(r, realVersion) } return s.deserializeV1(r) } func (s *STRTree) deserializeVn(r *bufio.Reader, version int64) error { if version == 1 { return s.deserializeV1(r) } // TODO: Implement me! return errors.New("not implemented, yet") }