| /* |
| * Copyright (c) 2001, 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 sun.net.www.http; |
| |
| import java.io.*; |
| import java.net.*; |
| |
| /** |
| * Instances of this class are returned to applications for the purpose of |
| * sending user data for a HTTP POST or PUT request. This class is used |
| * when the content-length will be specified in the header of the request. |
| * The semantics of ByteArrayOutputStream are extended so that |
| * when close() is called, it is no longer possible to write |
| * additional data to the stream. From this point the content length of |
| * the request is fixed and cannot change. |
| * |
| * @author Michael McMahon |
| */ |
| |
| public class PosterOutputStream extends ByteArrayOutputStream { |
| |
| private boolean closed; |
| |
| /** |
| * Creates a new output stream for POST user data |
| */ |
| public PosterOutputStream () { |
| super (256); |
| } |
| |
| /** |
| * Writes the specified byte to this output stream. |
| * |
| * @param b the byte to be written. |
| */ |
| public synchronized void write(int b) { |
| if (closed) { |
| return; |
| } |
| super.write (b); |
| } |
| |
| /** |
| * Writes <code>len</code> bytes from the specified byte array |
| * starting at offset <code>off</code> to this output stream. |
| * |
| * @param b the data. |
| * @param off the start offset in the data. |
| * @param len the number of bytes to write. |
| */ |
| public synchronized void write(byte b[], int off, int len) { |
| if (closed) { |
| return; |
| } |
| super.write (b, off, len); |
| } |
| |
| /** |
| * Resets the <code>count</code> field of this output |
| * stream to zero, so that all currently accumulated output in the |
| * ouput stream is discarded. The output stream can be used again, |
| * reusing the already allocated buffer space. If the output stream |
| * has been closed, then this method has no effect. |
| * |
| * @see java.io.ByteArrayInputStream#count |
| */ |
| public synchronized void reset() { |
| if (closed) { |
| return; |
| } |
| super.reset (); |
| } |
| |
| /** |
| * After close() has been called, it is no longer possible to write |
| * to this stream. Further calls to write will have no effect. |
| */ |
| public synchronized void close() throws IOException { |
| closed = true; |
| super.close (); |
| } |
| } |