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encode.go
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encode.go
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// Copyright © 2019 Alibaba Co. Ltd.
//
// 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 encode
import (
"encoding/base64"
"strings"
"unicode"
)
// B64Encode implements base64 encode for string if necessary.
func B64Encode(s string) string {
if strings.Contains(s, "\n") || !isASCII(s) {
return "{base64}" + base64.StdEncoding.EncodeToString([]byte(s))
}
return s
}
// isASCII indicates string contains only ASCII.
func isASCII(s string) bool {
for i := 0; i < len(s); i++ {
if s[i] > unicode.MaxASCII {
return false
}
}
return true
}