org.apache.inlong.sort.filesystem.shaded.com.amazonaws.util.CountingInputStream Maven / Gradle / Ivy
/*
* Copyright 2010-2022 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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.amazonaws.util;
import java.io.IOException;
import java.io.InputStream;
import com.amazonaws.internal.SdkFilterInputStream;
/**
* Simple input stream wrapper utility to count the bytes read from a stream.
*/
public class CountingInputStream extends SdkFilterInputStream {
private long byteCount = 0;
public CountingInputStream(InputStream in) {
super(in);
}
/**
* Returns the number of bytes read from this stream so far.
*
* @return the number of bytes read from this stream so far.
*/
public long getByteCount() {
return byteCount;
}
@Override
public int read() throws IOException {
int tmp = super.read();
byteCount += tmp >= 0 ? 1 : 0;
return tmp;
}
@Override
public int read(byte[] b, int off, int len) throws IOException {
int tmp = super.read(b, off, len);
byteCount += tmp >= 0 ? tmp : 0;
return tmp;
}
}