mirror of https://github.com/minio/minio.git
70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
/*
|
||
* MinIO Cloud Storage, (C) 2017, 2018 MinIO, Inc.
|
||
*
|
||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
* you may not use this file except in compliance with the License.
|
||
* You may obtain a copy of the License at
|
||
*
|
||
* http://www.apache.org/licenses/LICENSE-2.0
|
||
*
|
||
* Unless required by applicable law or agreed to in writing, software
|
||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
* See the License for the specific language governing permissions and
|
||
* limitations under the License.
|
||
*/
|
||
|
||
package cmd
|
||
|
||
import (
|
||
"encoding/json"
|
||
"fmt"
|
||
)
|
||
|
||
// BoolFlag - wrapper bool type.
|
||
type BoolFlag bool
|
||
|
||
// String - returns string of BoolFlag.
|
||
func (bf BoolFlag) String() string {
|
||
if bf {
|
||
return "on"
|
||
}
|
||
|
||
return "off"
|
||
}
|
||
|
||
// MarshalJSON - converts BoolFlag into JSON data.
|
||
func (bf BoolFlag) MarshalJSON() ([]byte, error) {
|
||
return json.Marshal(bf.String())
|
||
}
|
||
|
||
// UnmarshalJSON - parses given data into BoolFlag.
|
||
func (bf *BoolFlag) UnmarshalJSON(data []byte) (err error) {
|
||
var s string
|
||
if err = json.Unmarshal(data, &s); err == nil {
|
||
b := BoolFlag(true)
|
||
if s == "" {
|
||
// Empty string is treated as valid.
|
||
*bf = b
|
||
} else if b, err = ParseBoolFlag(s); err == nil {
|
||
*bf = b
|
||
}
|
||
}
|
||
|
||
return err
|
||
}
|
||
|
||
// ParseBoolFlag - parses string into BoolFlag.
|
||
func ParseBoolFlag(s string) (bf BoolFlag, err error) {
|
||
switch s {
|
||
case "on":
|
||
bf = true
|
||
case "off":
|
||
bf = false
|
||
default:
|
||
err = fmt.Errorf("invalid value ‘%s’ for BoolFlag", s)
|
||
}
|
||
|
||
return bf, err
|
||
}
|