/*
* $Header: /home/cvs/jakarta-commons/httpclient/src/java/org/apache/commons/httpclient/RequestOutputStream.java,v 1.21 2003/04/04 02:37:02 mbecke Exp $
* $Revision: 1.21 $
* $Date: 2003/04/04 02:37:02 $
*
* ====================================================================
*
* The Apache Software License, Version 1.1
*
* Copyright (c) 1999-2003 The Apache Software Foundation. All rights
* reserved.
*
* 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
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Commons", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact [email protected].
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* 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 THE APACHE SOFTWARE FOUNDATION 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
* [Additional notices, if required by prior licensing conditions]
*
*/
package org.apache.commons.httpclient;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.io.IOException;
import java.io.OutputStream;
/**
* <p>
* {@link OutputStream} wrapper supporting the chunked transfer encoding.
* </p>
* @author <a href="mailto:[email protected]">Remy Maucherat</a>
* @author Sean C. Sullivan
* @author <a href="mailto:[email protected]">dIon Gillard</a>
* @author <a href="mailto:[email protected]">Mike Bowler</a>
* @version $Revision: 1.21 $ $Date: 2003/04/04 02:37:02 $
*
* @deprecated Use new ChunkedOutputStream(HttpConnecion#getRequestOutputStream());
*
*/
public class RequestOutputStream
extends OutputStream {
// ----------------------------------------------------------- Constructors
/**
* Construct an output stream wrapping the given stream.
* The stream will not use chunking.
*
* @param stream wrapped output stream. Must be non-null.
*
* @deprecated Use ChunkedOutputStream;
*/
public RequestOutputStream(OutputStream stream) {
this(stream, false);
}
/**
* Construct an output stream wrapping the given stream.
*
* @param stream wrapped output stream. Must be non-null.
* @param useChunking when <code>true</code>, the chunked transfer encoding
* will be used
*
* @deprecated Use ChunkedOutputStream;
*/
public RequestOutputStream(OutputStream stream, boolean useChunking) {
if (stream == null) {
throw new NullPointerException("stream parameter is null");
}
this.stream = stream;
this.useChunking = useChunking;
}
// ------------------------------------------------------- Static Variables
/** Log object for this class. */
private static final Log LOG = LogFactory.getLog(RequestOutputStream.class);
// ----------------------------------------------------- Instance Variables
/** Has this stream been closed? */
private boolean closed = false;
/** The underlying output stream to which we will write data */
private OutputStream stream = null;
/** True if chunking is allowed */
private boolean useChunking = false;
/** <tt>"\r\n"</tt>, as bytes. */
private static final byte CRLF[] = new byte[] {(byte) 13, (byte) 10};
/** End chunk */
private static final byte ENDCHUNK[] = CRLF;
/** 0 */
private static final byte ZERO[] = new byte[] {(byte) '0'};
/** 1 */
private static final byte ONE[] = new byte[] {(byte) '1'};
// ------------------------------------------------------------- Properties
/**
* Use chunking flag setter.
*
* @param useChunking true if chunking is to be used, false otherwise
*
* @deprecated Use ChunkedOutputStream;
*/
public void setUseChunking(boolean useChunking) {
this.useChunking = useChunking;
}
/**
* Use chunking flag getter.
*
* @return true if chunking is to be used, false otherwise
*
* @deprecated Use ChunkedOutputStream;
*/
public boolean isUseChunking() {
return useChunking;
}
// --------------------------------------------------------- Public Methods
/**
* Writes a <code>String</code> to the client, without a carriage return
* line feed (CRLF) character at the end.
*
* @param s the <code>String</code> to send to the client. Must be non-null.
* @throws IOException if an input or output exception occurred
*
* @deprecated Use ChunkedOutputStream;
*/
public void print(String s) throws IOException {
LOG.trace("enter RequestOutputStream.print(String)");
if (s == null) {
s = "null";
}
int len = s.length();
for (int i = 0; i < len; i++) {
write(s.charAt(i));
}
}
/**
* Writes a carriage return-line feed (CRLF) to the client.
*
* @throws IOException if an input or output exception occurred
*
* @deprecated Use ChunkedOutputStream;
*/
public void println() throws IOException {
print("\r\n");
}
/**
* Writes a <code>String</code> to the client,
* followed by a carriage return-line feed (CRLF).
*
* @param s the </code>String</code> to write to the client
* @exception IOException if an input or output exception occurred
*
* @deprecated Use ChunkedOutputStream;
*/
public void println(String s) throws IOException {
print(s);
println();
}
// -------------------------------------------- ServletOutputStream Methods
/**
* Write the specified byte to our output stream.
*
* @param b The byte to be written
* @throws IOException if an input/output error occurs
*
* @deprecated Use ChunkedOutputStream;
*/
public void write(int b) throws IOException {
//FIXME: If using chunking, the chunks are ONE byte long!
if (useChunking) {
stream.write(ONE, 0, ONE.length);
stream.write(CRLF, 0, CRLF.length);
stream.write(b);
stream.write(ENDCHUNK, 0, ENDCHUNK.length);
} else {
stream.write(b);
}
}
/**
* Write the specified byte array.
*
* @param b the byte array to write out
* @param off the offset within <code>b</code> to start writing from
* @param len the length of data within <code>b</code> to write
* @throws IOException when errors occur writing output
*
* @deprecated Use ChunkedOutputStream;
*/
public void write(byte[] b, int off, int len) throws IOException {
LOG.trace("enter RequestOutputStream.write(byte[], int, int)");
if (useChunking) {
byte chunkHeader[] = HttpConstants.getBytes(Integer.toHexString(len) + "\r\n");
stream.write(chunkHeader, 0, chunkHeader.length);
stream.write(b, off, len);
stream.write(ENDCHUNK, 0, ENDCHUNK.length);
} else {
stream.write(b, off, len);
}
}
/**
* Close this output stream, causing any buffered data to be flushed and
* any further output data to throw an IOException.
*
* @throws IOException if an error occurs closing the stream
*
* @deprecated Use ChunkedOutputStream;
*/
public void close() throws IOException {
LOG.trace("enter RequestOutputStream.close()");
if (!closed) {
try {
if (useChunking) {
// Write the final chunk.
stream.write(ZERO, 0, ZERO.length);
stream.write(CRLF, 0, CRLF.length);
stream.write(ENDCHUNK, 0, ENDCHUNK.length);
}
} catch (IOException ioe) {
LOG.debug("Unexpected exception caught when closing output "
+ " stream", ioe);
throw ioe;
} finally {
// regardless of what happens, mark the stream as closed.
// if there are errors closing it, there's not much we can do
// about it
closed = true;
super.close();
}
}
}
}
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