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Java > Open Source Codes > org > columba > ristretto > composer > mimepartrenderers > MultipartRenderer


1 /* ***** BEGIN LICENSE BLOCK *****
2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
3  *
4  * The contents of this file are subject to the Mozilla Public License Version
5  * 1.1 (the "License"); you may not use this file except in compliance with
6  * the License. You may obtain a copy of the License at
7  * http://www.mozilla.org/MPL/
8  *
9  * Software distributed under the License is distributed on an "AS IS" basis,
10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11  * for the specific language governing rights and limitations under the
12  * License.
13  *
14  * The Original Code is Ristretto Mail API.
15  *
16  * The Initial Developers of the Original Code are
17  * Timo Stich and Frederik Dietz.
18  * Portions created by the Initial Developers are Copyright (C) 2004
19  * All Rights Reserved.
20  *
21  * Contributor(s):
22  *
23  * Alternatively, the contents of this file may be used under the terms of
24  * either the GNU General Public License Version 2 or later (the "GPL"), or
25  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
26  * in which case the provisions of the GPL or the LGPL are applicable instead
27  * of those above. If you wish to allow use of your version of this file only
28  * under the terms of either the GPL or the LGPL, and not to allow others to
29  * use your version of this file under the terms of the MPL, indicate your
30  * decision by deleting the provisions above and replace them with the notice
31  * and other provisions required by the GPL or the LGPL. If you do not delete
32  * the provisions above, a recipient may use your version of this file under
33  * the terms of any one of the MPL, the GPL or the LGPL.
34  *
35  * ***** END LICENSE BLOCK ***** */
36 package org.columba.ristretto.composer.mimepartrenderers;
37
38 import java.io.ByteArrayInputStream JavaDoc;
39 import java.io.InputStream JavaDoc;
40 import java.util.Vector JavaDoc;
41
42 import org.columba.ristretto.composer.MimePartRenderer;
43 import org.columba.ristretto.composer.MimeTreeRenderer;
44 import org.columba.ristretto.io.SequenceInputStream;
45 import org.columba.ristretto.message.MimeHeader;
46 import org.columba.ristretto.message.MimePart;
47 import org.columba.ristretto.message.StreamableMimePart;
48
49 /**
50  * MIME Multipart renderer.
51  *
52  * <br>
53  * <b>RFC(s):</b> 2046
54  * @author Timo Stich <tstich@users.sourceforge.net>
55  */
56 public class MultipartRenderer extends MimePartRenderer {
57
58     /**
59      * @see org.columba.ristretto.composer.MimePartRenderer#getRegisterString()
60      */
61     public String JavaDoc getRegisterString() {
62         return "multipart";
63     }
64
65     /**
66      * @see org.columba.ristretto.composer.MimePartRenderer#render(org.columba.ristretto.message.MimePart)
67      */
68     public InputStream JavaDoc render(MimePart part) throws Exception JavaDoc {
69         Vector JavaDoc streams = new Vector JavaDoc(part.countChilds() * 2 + 3);
70
71         MimeHeader header = part.getHeader();
72         
73         // Create boundary to separate the mime-parts
74 String JavaDoc boundary = createUniqueBoundary().toString();
75         header.putContentParameter("boundary", boundary );
76         byte[] startBoundary = ( "\r\n--" + boundary + "\r\n" ).getBytes();
77         byte[] endBoundary = ( "\r\n--" + boundary + "--\r\n" ).getBytes();
78         
79         // Create the header and body (if it has one) of the multipart
80 streams.add( header.getHeader().getInputStream() );
81         if( part instanceof StreamableMimePart)
82             streams.add( ((StreamableMimePart)part).getInputStream() );
83         
84         // Add the mime-parts
85 for( int i=0; i<part.countChilds(); i++ ) {
86             streams.add(new ByteArrayInputStream JavaDoc( startBoundary ));
87             streams.add(MimeTreeRenderer.getInstance().renderMimePart(part.getChild(i)));
88         }
89         
90         // Create the closing boundary
91 streams.add( new ByteArrayInputStream JavaDoc( endBoundary ) );
92         
93         return new SequenceInputStream( streams );
94     }
95
96     
97
98 }
99
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