| 1 | /** |
| 2 | * Copyright 2008 ATG DUST Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * |
| 7 | * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | * |
| 9 | * Unless required by applicable law or agreed to in writing, software |
| 10 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | * See the License for the specific language governing permissions and limitations under the License. |
| 13 | */ |
| 14 | package atg.test.io; |
| 15 | |
| 16 | import java.io.IOException; |
| 17 | import java.io.InputStream; |
| 18 | import java.nio.ByteBuffer; |
| 19 | |
| 20 | /** |
| 21 | * An InputStream which reads from a ByteBuffer |
| 22 | * |
| 23 | * @author Adam Belmont |
| 24 | * @version $Id:$ |
| 25 | * @see ByteBuffer |
| 26 | * |
| 27 | */ |
| 28 | public class ByteBufferInputStream extends InputStream { |
| 29 | //------------------------------------- |
| 30 | /** Class version string */ |
| 31 | |
| 32 | public static String CLASS_VERSION = |
| 33 | "$Id:$"; |
| 34 | |
| 35 | private ByteBuffer mBuffer = null; |
| 36 | |
| 37 | public ByteBufferInputStream(ByteBuffer pBuffer) { |
| 38 | mBuffer = pBuffer; |
| 39 | } |
| 40 | |
| 41 | public int read(byte b[]) throws IOException { |
| 42 | return read(b, 0, b.length); |
| 43 | } |
| 44 | |
| 45 | public synchronized int read() throws IOException { |
| 46 | if (!mBuffer.hasRemaining()) { |
| 47 | return -1; |
| 48 | } |
| 49 | return mBuffer.get(); |
| 50 | } |
| 51 | |
| 52 | public synchronized int read(byte[] bytes, int off, int len) |
| 53 | throws IOException { |
| 54 | len = Math.min(len, mBuffer.remaining()); |
| 55 | mBuffer.get(bytes, off, len); |
| 56 | return len > 0 ? len : -1; |
| 57 | } |
| 58 | } |