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/*
 * Copyright (c) 1997, 2020 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Distribution License v. 1.0, which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

package com.sun.xml.messaging.saaj.util;

import java.io.ByteArrayInputStream;
import java.io.IOException;

// This class just gives access to the underlying buffer without copying.

public class ByteInputStream extends ByteArrayInputStream {
    private static final byte[] EMPTY_ARRAY = new byte[0];
    
    public ByteInputStream() {
        this(EMPTY_ARRAY, 0);
    }
    
    public ByteInputStream(byte buf[], int length) {
        super(buf, 0, length);
    }

    public ByteInputStream(byte buf[], int offset, int length) {
        super(buf, offset, length);
    }

    public byte[] getBytes() {
        return buf;
    }

    public int getCount() {
        return count;
    }

    @Override
    public void close() throws IOException {
        reset();
    }

    public void setBuf(byte[] buf) {
        this.buf = buf;
        this.pos = 0;
        this.count = buf.length;
    }
}