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branch java sdk for qcloud cos

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/*
 * Copyright 2010-2019 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.
 
 * According to cos feature, we modify some class，comment, field name, etc.
 */


package com.branch.cos.internal;

import java.io.InputStream;
import java.security.DigestInputStream;
import java.security.MessageDigest;



public class SdkDigestInputStream extends DigestInputStream implements Releasable {
    public SdkDigestInputStream(InputStream stream, MessageDigest digest) {
        super(stream, digest);
    }

    @Override
    public final void release() {
        // Don't call IOUtils.release(in, null) or else could lead to infinite loop
        SdkIOUtils.closeQuietly(this);
        if (in instanceof Releasable) {
            // This allows any underlying stream that has the close operation
            // disabled to be truly released
            Releasable r = (Releasable) in;
            r.release();
        }
    }
}