106 lines
3.4 KiB
Java
106 lines
3.4 KiB
Java
/*
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* Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.net.www.http;
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import java.io.*;
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import java.net.*;
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/**
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* Instances of this class are returned to applications for the purpose of
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* sending user data for a HTTP request (excluding TRACE). This class is used
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* when the content-length will be specified in the header of the request.
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* The semantics of ByteArrayOutputStream are extended so that
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* when close() is called, it is no longer possible to write
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* additional data to the stream. From this point the content length of
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* the request is fixed and cannot change.
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*
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* @author Michael McMahon
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*/
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public class PosterOutputStream extends ByteArrayOutputStream {
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private boolean closed;
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/**
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* Creates a new output stream for POST user data
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*/
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public PosterOutputStream () {
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super (256);
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}
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/**
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* Writes the specified byte to this output stream.
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*
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* @param b the byte to be written.
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*/
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public synchronized void write(int b) {
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if (closed) {
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return;
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}
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super.write (b);
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}
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/**
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* Writes <code>len</code> bytes from the specified byte array
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* starting at offset <code>off</code> to this output stream.
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*
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* @param b the data.
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* @param off the start offset in the data.
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* @param len the number of bytes to write.
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*/
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public synchronized void write(byte b[], int off, int len) {
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if (closed) {
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return;
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}
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super.write (b, off, len);
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}
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/**
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* Resets the <code>count</code> field of this output
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* stream to zero, so that all currently accumulated output in the
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* output stream is discarded. The output stream can be used again,
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* reusing the already allocated buffer space. If the output stream
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* has been closed, then this method has no effect.
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*
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* @see java.io.ByteArrayInputStream#count
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*/
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public synchronized void reset() {
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if (closed) {
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return;
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}
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super.reset ();
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}
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/**
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* After close() has been called, it is no longer possible to write
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* to this stream. Further calls to write will have no effect.
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*/
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public synchronized void close() throws IOException {
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closed = true;
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super.close ();
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}
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}
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