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string_slice.go
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/
string_slice.go
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// Copyright 2017 TiKV Project Authors.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package typeutil
import (
"strconv"
"strings"
"github.com/pingcap/errors"
)
// StringSlice is more friendly to json encode/decode
type StringSlice []string
// MarshalJSON returns the size as a JSON string.
func (s StringSlice) MarshalJSON() ([]byte, error) {
return []byte(strconv.Quote(strings.Join(s, ","))), nil
}
// UnmarshalJSON parses a JSON string into the byte size.
func (s *StringSlice) UnmarshalJSON(text []byte) error {
data, err := strconv.Unquote(string(text))
if err != nil {
return errors.WithStack(err)
}
if len(data) == 0 {
*s = []string{}
return nil
}
*s = strings.Split(data, ",")
return nil
}