/*

 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package com.sun.xml.internal.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;

    }

    public void close() throws IOException {

        reset();

    }

    public void setBuf(byte[] buf) {

        this.buf = buf;

        this.pos = 0;

        this.count = buf.length;

    }

}