package org.apache.blur.lucene.serializer;
/**
* 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.
*/
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
public class IOUtil {
private static final String UTF_8 = "UTF-8";
public static void writeString(DataOutput out, String s) throws IOException {
if (s == null) {
out.writeInt(-1);
}
byte[] bytes = s.getBytes(UTF_8);
out.writeInt(bytes.length);
out.write(bytes);
}
public static String readString(DataInput in) throws IOException {
int length = in.readInt();
if (length == -1) {
return null;
}
byte[] bs = new byte[length];
in.readFully(bs);
return new String(bs, UTF_8);
}
}