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javabytes.go
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javabytes.go
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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 util
import (
"fmt"
"strconv"
"strings"
)
// javabytes is like '0,0,101,12,0,1,8,-1,-1,-1', delimited by ',' and each byte ranges from [-128, 127]
type javaBytesEncoder struct {
}
func (*javaBytesEncoder) EncodeAll(s string) ([]byte, error) {
bytesInStrList := strings.Split(s, ",")
value := make([]byte, len(bytesInStrList))
for i, byteStr := range bytesInStrList {
b, err := strconv.Atoi(byteStr)
if err != nil || b > 127 || b < -128 { // byte ranges from [-128, 127]
return nil, fmt.Errorf("invalid java byte \"%s\"", byteStr)
}
value[i] = byte(b)
}
return value, nil
}
func (*javaBytesEncoder) DecodeAll(bytes []byte) (string, error) {
s := make([]string, len(bytes))
for i, c := range bytes {
s[i] = fmt.Sprint(int8(c))
}
return strings.Join(s, ","), nil
}
func (*javaBytesEncoder) String() string {
return "JAVABYTES"
}