rogueserver/db/legacy.go

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/*
Copyright (C) 2024 Pagefault Games
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package db
import (
"encoding/gob"
"encoding/hex"
"fmt"
"os"
"strconv"
"github.com/klauspost/compress/zstd"
"github.com/pagefaultgames/rogueserver/defs"
)
func LegacyReadSystemSaveData(uuid []byte) (defs.SystemSaveData, error) {
var system defs.SystemSaveData
file, err := os.Open("userdata/" + hex.EncodeToString(uuid) + "/system.pzs")
if err != nil {
return system, fmt.Errorf("failed to open save file for reading: %s", err)
}
defer file.Close()
zstdDecoder, err := zstd.NewReader(file)
if err != nil {
return system, fmt.Errorf("failed to create zstd decoder: %s", err)
}
defer zstdDecoder.Close()
err = gob.NewDecoder(zstdDecoder).Decode(&system)
if err != nil {
return system, fmt.Errorf("failed to deserialize save: %s", err)
}
return system, nil
}
func LegacyReadSessionSaveData(uuid []byte, slotID int) (defs.SessionSaveData, error) {
var session defs.SessionSaveData
fileName := "session"
if slotID != 0 {
fileName += strconv.Itoa(slotID)
}
file, err := os.Open(fmt.Sprintf("userdata/%s/%s.pzs", hex.EncodeToString(uuid), fileName))
if err != nil {
return session, fmt.Errorf("failed to open save file for reading: %s", err)
}
defer file.Close()
zstdDecoder, err := zstd.NewReader(file)
if err != nil {
return session, fmt.Errorf("failed to create zstd decoder: %s", err)
}
defer zstdDecoder.Close()
err = gob.NewDecoder(zstdDecoder).Decode(&session)
if err != nil {
return session, fmt.Errorf("failed to deserialize save: %s", err)
}
return session, nil
}