| /* |
| * Copyright (c) 2001-2008 Caucho Technology, Inc. All rights reserved. |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowlegement: |
| * "This product includes software developed by the |
| * Caucho Technology (http://www.caucho.com/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "Burlap", "Resin", and "Caucho" must not be used to |
| * endorse or promote products derived from this software without prior |
| * written permission. For written permission, please contact |
| * info@caucho.com. |
| * |
| * 5. Products derived from this software may not be called "Resin" |
| * nor may "Resin" appear in their names without prior written |
| * permission of Caucho Technology. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, |
| * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * @author Scott Ferguson |
| */ |
| |
| package com.alibaba.com.caucho.hessian.io; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * Output stream for Hessian 2 streaming requests. |
| */ |
| public class Hessian2StreamingInput { |
| private Hessian2Input _in; |
| |
| /** |
| * Creates a new Hessian input stream, initialized with an |
| * underlying input stream. |
| * |
| * @param is the underlying output stream. |
| */ |
| public Hessian2StreamingInput(InputStream is) { |
| _in = new Hessian2Input(new StreamingInputStream(is)); |
| } |
| |
| /** |
| * Read the next object |
| */ |
| public Object readObject() |
| throws IOException { |
| return _in.readStreamingObject(); |
| } |
| |
| /** |
| * Close the output. |
| */ |
| public void close() |
| throws IOException { |
| _in.close(); |
| } |
| |
| static class StreamingInputStream extends InputStream { |
| private InputStream _is; |
| private int _length; |
| |
| StreamingInputStream(InputStream is) { |
| _is = is; |
| } |
| |
| @Override |
| public int read() |
| throws IOException { |
| InputStream is = _is; |
| |
| while (_length == 0) { |
| int code = is.read(); |
| |
| if (code < 0) |
| return -1; |
| else if (code != 'p' && code != 'P') |
| throw new HessianProtocolException("expected streaming packet at 0x" |
| + Integer.toHexString(code & 0xff)); |
| |
| int d1 = is.read(); |
| int d2 = is.read(); |
| |
| if (d2 < 0) |
| return -1; |
| |
| _length = (d1 << 8) + d2; |
| } |
| |
| _length--; |
| return is.read(); |
| } |
| |
| @Override |
| public int read(byte[] buffer, int offset, int length) |
| throws IOException { |
| InputStream is = _is; |
| |
| while (_length == 0) { |
| int code = is.read(); |
| |
| if (code < 0) |
| return -1; |
| else if (code != 'p' && code != 'P') { |
| throw new HessianProtocolException("expected streaming packet at 0x" |
| + Integer.toHexString(code & 0xff) |
| + " (" + (char) code + ")"); |
| } |
| |
| int d1 = is.read(); |
| int d2 = is.read(); |
| |
| if (d2 < 0) |
| return -1; |
| |
| _length = (d1 << 8) + d2; |
| } |
| |
| int sublen = _length; |
| if (length < sublen) |
| sublen = length; |
| |
| sublen = is.read(buffer, offset, sublen); |
| |
| if (sublen < 0) |
| return -1; |
| |
| _length -= sublen; |
| |
| return sublen; |
| } |
| } |
| } |