| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| */ |
| package org.apache.qpid.server.util; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * Wraps @link {@link ByteBuffer} into {@link InputStream} |
| */ |
| public class ByteBufferInputStream extends InputStream |
| { |
| private final ByteBuffer _buffer; |
| |
| public ByteBufferInputStream(ByteBuffer buffer) |
| { |
| _buffer = buffer; |
| } |
| |
| @Override |
| public int read() throws IOException |
| { |
| if (_buffer.hasRemaining()) |
| { |
| return _buffer.get() & 0xFF; |
| } |
| return -1; |
| } |
| |
| @Override |
| public int read(byte[] b, int off, int len) throws IOException |
| { |
| if (!_buffer.hasRemaining()) |
| { |
| return -1; |
| } |
| if(_buffer.remaining() < len) |
| { |
| len = _buffer.remaining(); |
| } |
| _buffer.get(b, off, len); |
| |
| return len; |
| } |
| |
| @Override |
| public void mark(int readlimit) |
| { |
| _buffer.mark(); |
| } |
| |
| @Override |
| public void reset() throws IOException |
| { |
| _buffer.reset(); |
| } |
| |
| @Override |
| public boolean markSupported() |
| { |
| return true; |
| } |
| |
| @Override |
| public long skip(long n) throws IOException |
| { |
| _buffer.position(_buffer.position()+(int)n); |
| return n; |
| } |
| |
| @Override |
| public int available() throws IOException |
| { |
| return _buffer.remaining(); |
| } |
| |
| @Override |
| public void close() |
| { |
| } |
| } |