/*
* 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 com.github.ggrandes.kvstore.io;
import java.nio.ByteBuffer;
import java.nio.charset.Charset;
/**
* String Serializer (ByteBuffer)
*
* @author Guillermo Grandes / guillermo.grandes[at]gmail.com
*/
public class StringSerializer {
private static final Charset cs = Charset.forName("UTF-8");
public static final void fromStringToBuffer(final ByteBuffer out, final String str) {
if (str == null) {
out.putInt(Integer.MIN_VALUE);
return;
}
final byte[] bytes = str.getBytes(cs);
final int len = bytes.length;
out.putInt(len);
out.put(bytes, 0, len);
}
public static final String fromBufferToString(final ByteBuffer in) {
final int len = in.getInt();
if (len == Integer.MIN_VALUE) {
return null;
}
final byte[] bytes = new byte[len];
in.get(bytes, 0, len);
return new String(bytes, 0, len, cs);
}
}