/*
* 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 org.apache.beam.sdk.util;
import java.io.ByteArrayInputStream;
import java.io.IOException;
/**
* {@link ByteArrayInputStream} that allows accessing the entire internal buffer without copying.
*/
public class ExposedByteArrayInputStream extends ByteArrayInputStream{
public ExposedByteArrayInputStream(byte[] buf) {
super(buf);
}
/**
* Read all remaining bytes.
*/
public byte[] readAll() throws IOException {
if (pos == 0 && count == buf.length) {
pos = count;
return buf;
}
byte[] ret = new byte[count - pos];
super.read(ret);
return ret;
}
@Override
public void close() {
try {
super.close();
} catch (IOException exn) {
throw new RuntimeException("Unexpected IOException closing ByteArrayInputStream", exn);
}
}
}