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Java > Open Source Codes > org > columba > ristretto > imap > parser > MessageAttributeParser


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
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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.
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35  * ***** END LICENSE BLOCK ***** */
36 package org.columba.ristretto.imap.parser;
37
38 import java.util.regex.Matcher JavaDoc;
39 import java.util.regex.Pattern JavaDoc;
40
41 import org.columba.ristretto.message.Attributes;
42
43 /**
44  * Parser for MessageAttributes.
45  *
46  * @author tstich
47  *
48  */
49 public class MessageAttributeParser {
50     
51
52     private static final Pattern JavaDoc msg_att_key = Pattern.compile(" ?(ENVELOPE|INTERNALDATE|RFC822.(HEADER|TEXT|SIZE)|UID|FLAGS|BODYSTRUCTURE|BODY(\\[[^\\]]*\\])?) ");
53     
54     /**
55      * Parse the attributes.
56      *
57      * @param input
58      * @return the Attributes.
59      */
60     public static Attributes parse( String JavaDoc input ) {
61         // remove first and last char to remove ()
62 String JavaDoc strippedParentheses = input.substring(1,input.length()-1);
63         
64         Matcher JavaDoc matcher = msg_att_key.matcher(strippedParentheses);
65         Attributes result = new Attributes();
66         String JavaDoc lastKey = null;
67         int lastEnd = 0;
68         
69         // find all key - value pairs
70 while(matcher.find()) {
71             if( lastKey != null ) {
72                 result.put(lastKey,strippedParentheses.substring(lastEnd,matcher.start()));
73             }
74             lastKey = matcher.group(1);
75             //reduce BODY[<section>... to BODY to make accesing the body easier
76 if( lastKey.startsWith("BODY") && !lastKey.equals("BODYSTRUCTURE") ) {
77                 lastKey = "BODY";
78             }
79             lastEnd = matcher.end();
80         }
81
82         if( lastKey != null ) {
83             result.put(lastKey,strippedParentheses.substring(lastEnd,strippedParentheses.length()));
84         }
85         
86         return result;
87     }
88
89 }
90
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