// Load into v the json file at the give path. The path elements, `pathElem`
// are expanded by `fileutil.ExpandPath`.
func Load(v interface{}, pathElem ...string) error {
path := fileutil.ExpandPath(pathElem...)
buf, err := ioutil.ReadFile(path)
if err != nil {
return err
}
return json.Unmarshal(buf, &v)
}
// Store the data in v into a give file path. The path elements `pathElem` are
// expanded by `fileutil.ExpandPath`.
func Store(v interface{}, pathElem ...string) error {
path := fileutil.ExpandPath(pathElem...)
buf, err := json.Marshal(v)
if err != nil {
return err
}
var out bytes.Buffer
if err = json.Indent(&out, buf, "", "\t"); err != nil {
return err
}
return ioutil.WriteFile(path, out.Bytes(), 0600)
}
func SetFilePath(pathElem ...string) (err error) {
path := fileutil.ExpandPath(pathElem...)
// Make sure the directory exists.
logDir := filepath.Dir(path)
if err = os.MkdirAll(logDir, 0777); err != nil {
return err
}
// Open the log file.
f, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
if err != nil {
return err
}
// Set the output.
log.SetOutput(f)
return nil
}