81 lines
2.2 KiB
Go
81 lines
2.2 KiB
Go
// Copyright (c) 2016 Tigera, Inc. All rights reserved.
|
|
|
|
// 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 numorstring
|
|
|
|
import (
|
|
"encoding/json"
|
|
"strconv"
|
|
)
|
|
|
|
// UInt8OrString is a type that can hold an uint8 or a string. When used in
|
|
// JSON or YAML marshalling and unmarshalling, it produces or consumes the
|
|
// inner type. This allows you to have, for example, a JSON field that can
|
|
// accept a name or number.
|
|
type Uint8OrString struct {
|
|
Type NumOrStringType
|
|
NumVal uint8
|
|
StrVal string
|
|
}
|
|
|
|
// UnmarshalJSON implements the json.Unmarshaller interface.
|
|
func (i *Uint8OrString) UnmarshalJSON(b []byte) error {
|
|
if b[0] == '"' {
|
|
var s string
|
|
if err := json.Unmarshal(b, &s); err != nil {
|
|
return err
|
|
}
|
|
|
|
num, err := strconv.ParseUint(s, 10, 8)
|
|
if err == nil {
|
|
i.Type = NumOrStringNum
|
|
i.NumVal = uint8(num)
|
|
} else {
|
|
i.Type = NumOrStringString
|
|
i.StrVal = s
|
|
}
|
|
|
|
return nil
|
|
}
|
|
i.Type = NumOrStringNum
|
|
return json.Unmarshal(b, &i.NumVal)
|
|
}
|
|
|
|
// MarshalJSON implements the json.Marshaller interface.
|
|
func (i Uint8OrString) MarshalJSON() ([]byte, error) {
|
|
if num, err := i.NumValue(); err == nil {
|
|
return json.Marshal(num)
|
|
} else {
|
|
return json.Marshal(i.StrVal)
|
|
}
|
|
}
|
|
|
|
// String returns the string value, or the Itoa of the int value.
|
|
func (i Uint8OrString) String() string {
|
|
if i.Type == NumOrStringString {
|
|
return i.StrVal
|
|
}
|
|
return strconv.FormatUint(uint64(i.NumVal), 10)
|
|
}
|
|
|
|
// NumValue returns the NumVal if type Int, or if
|
|
// it is a String, will attempt a conversion to int.
|
|
func (i Uint8OrString) NumValue() (uint8, error) {
|
|
if i.Type == NumOrStringString {
|
|
num, err := strconv.ParseUint(i.StrVal, 10, 8)
|
|
return uint8(num), err
|
|
}
|
|
return i.NumVal, nil
|
|
}
|