org.eclipse.jetty.util.MultiPartOutputStream Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.util;
import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
/* ================================================================ */
/** Handle a multipart MIME response.
*
*
*
*/
public class MultiPartOutputStream extends FilterOutputStream
{
/* ------------------------------------------------------------ */
private static final byte[] __CRLF={'\r','\n'};
private static final byte[] __DASHDASH={'-','-'};
public static final String MULTIPART_MIXED="multipart/mixed";
public static final String MULTIPART_X_MIXED_REPLACE="multipart/x-mixed-replace";
/* ------------------------------------------------------------ */
private final String boundary;
private final byte[] boundaryBytes;
/* ------------------------------------------------------------ */
private boolean inPart=false;
/* ------------------------------------------------------------ */
public MultiPartOutputStream(OutputStream out)
throws IOException
{
super(out);
boundary = "jetty"+System.identityHashCode(this)+
Long.toString(System.currentTimeMillis(),36);
boundaryBytes=boundary.getBytes(StandardCharsets.ISO_8859_1);
}
public MultiPartOutputStream(OutputStream out, String boundary)
throws IOException
{
super(out);
this.boundary = boundary;
boundaryBytes=boundary.getBytes(StandardCharsets.ISO_8859_1);
}
/* ------------------------------------------------------------ */
/** End the current part.
* @exception IOException IOException
*/
@Override
public void close()
throws IOException
{
try
{
if (inPart)
out.write(__CRLF);
out.write(__DASHDASH);
out.write(boundaryBytes);
out.write(__DASHDASH);
out.write(__CRLF);
inPart=false;
}
finally
{
super.close();
}
}
/* ------------------------------------------------------------ */
public String getBoundary()
{
return boundary;
}
public OutputStream getOut() {return out;}
/* ------------------------------------------------------------ */
/** Start creation of the next Content.
*/
public void startPart(String contentType)
throws IOException
{
if (inPart)
out.write(__CRLF);
inPart=true;
out.write(__DASHDASH);
out.write(boundaryBytes);
out.write(__CRLF);
if (contentType != null)
out.write(("Content-Type: "+contentType).getBytes(StandardCharsets.ISO_8859_1));
out.write(__CRLF);
out.write(__CRLF);
}
/* ------------------------------------------------------------ */
/** Start creation of the next Content.
*/
public void startPart(String contentType, String[] headers)
throws IOException
{
if (inPart)
out.write(__CRLF);
inPart=true;
out.write(__DASHDASH);
out.write(boundaryBytes);
out.write(__CRLF);
if (contentType != null)
out.write(("Content-Type: "+contentType).getBytes(StandardCharsets.ISO_8859_1));
out.write(__CRLF);
for (int i=0;headers!=null && i