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// Copyright 2017 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package config
import (
"bytes"
"encoding/json"
"fmt"
"io/ioutil"
"github.com/google/syzkaller/pkg/osutil"
)
func LoadFile(filename string, cfg interface{}) error {
if filename == "" {
return fmt.Errorf("no config file specified")
}
data, err := ioutil.ReadFile(filename)
if err != nil {
return fmt.Errorf("failed to read config file: %v", err)
}
return LoadData(data, cfg)
}
func LoadData(data []byte, cfg interface{}) error {
dec := json.NewDecoder(bytes.NewReader(data))
dec.DisallowUnknownFields()
if err := dec.Decode(cfg); err != nil {
return fmt.Errorf("failed to parse config file: %v", err)
}
return nil
}
func SaveFile(filename string, cfg interface{}) error {
data, err := SaveData(cfg)
if err != nil {
return err
}
return osutil.WriteFile(filename, data)
}
func SaveData(cfg interface{}) ([]byte, error) {
return json.MarshalIndent(cfg, "", "\t")
}
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