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copy.go
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copy.go
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// This file is part of the Smart Home
// Program complex distribution https://github.com/e154/smart-home
// Copyright (C) 2016-2021, Filippov Alex
//
// This library is free software: you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library. If not, see
// <https://www.gnu.org/licenses/>.
package common
import (
"bytes"
"encoding/gob"
"encoding/json"
"github.com/francoispqt/gojay"
"github.com/jinzhu/copier"
)
// CopyEngine ...
type CopyEngine string
const (
// JsonEngine ...
JsonEngine = CopyEngine("json")
// GobEngine ...
GobEngine = CopyEngine("gob")
// GojayEngine ...
GojayEngine = CopyEngine("gojay")
)
func gobCopy(to, from interface{}) (err error) {
buff := new(bytes.Buffer)
if err = gob.NewEncoder(buff).Encode(from); err != nil {
return
}
err = gob.NewDecoder(buff).Decode(to)
return
}
func jsonCopy(to, from interface{}) (err error) {
var b []byte
if b, err = json.Marshal(from); err != nil {
return
}
err = json.Unmarshal(b, to)
return
}
func gojayCopy(to, from interface{}) (err error) {
var b []byte
if b, err = gojay.Marshal(from); err != nil {
return
}
err = gojay.Unmarshal(b, to)
return
}
// Copy ...
func Copy(to, from interface{}, params ...CopyEngine) (err error) {
if len(params) == 0 {
err = copier.Copy(to, from)
return
}
switch params[0] {
case JsonEngine:
err = jsonCopy(to, from)
case GobEngine:
err = gobCopy(to, from)
default:
err = gojayCopy(to, from)
}
return
}