1 /*
   2  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.xml.internal.messaging.saaj.util;
  27 
  28 import java.io.ByteArrayInputStream;
  29 import java.io.IOException;
  30 
  31 // This class just gives access to the underlying buffer without copying.
  32 
  33 public class ByteInputStream extends ByteArrayInputStream {
  34     private static final byte[] EMPTY_ARRAY = new byte[0];
  35 
  36     public ByteInputStream() {
  37         this(EMPTY_ARRAY, 0);
  38     }
  39 
  40     public ByteInputStream(byte buf[], int length) {
  41         super(buf, 0, length);
  42     }
  43 
  44     public ByteInputStream(byte buf[], int offset, int length) {
  45         super(buf, offset, length);
  46     }
  47 
  48     public byte[] getBytes() {
  49         return buf;
  50     }
  51 
  52     public int getCount() {
  53         return count;
  54     }
  55 
  56     public void close() throws IOException {
  57         reset();
  58     }
  59 
  60     public void setBuf(byte[] buf) {
  61         this.buf = buf;
  62         this.pos = 0;
  63         this.count = buf.length;
  64     }
  65 }