/*
 * Copyright (c) 1997, 2012, 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;
    }
}
