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Java > Open Source Codes > org > columba > ristretto > pop3 > parser > POP3ResponseParser


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
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30  * decision by deleting the provisions above and replace them with the notice
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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.
34  *
35  * ***** END LICENSE BLOCK ***** */
36 package org.columba.ristretto.pop3.parser;
37
38 import java.util.regex.Matcher JavaDoc;
39 import java.util.regex.Pattern JavaDoc;
40
41 import org.columba.ristretto.parser.ParserException;
42 import org.columba.ristretto.pop3.POP3Response;
43
44 /**
45  * Parser for repsonses of a POP3 server.
46  * *
47  * @author Timo Stich <tstich@users.sourceforge.net>
48  */
49 public class POP3ResponseParser {
50
51     private static final Pattern JavaDoc responsePattern = Pattern.compile("(\\+|\\-)(OK|ERR)? ?([^\r\n]*)\r?\n?");
52
53     /**
54      * Parses a response line of a POP3 server and returns a POP3Response.
55      *
56      * @param line the raw reponse line from the server
57      * @return a parsed POP3Resonse
58      * @throws ParserException
59      */
60     public static POP3Response parse( CharSequence JavaDoc line ) throws ParserException {
61         Matcher JavaDoc matcher = responsePattern.matcher(line);
62         
63         if( matcher.find() ) {
64             POP3Response response = new POP3Response(line);
65             // OK / ERR
66 response.setType(matcher.group(1).equals("+") ? POP3Response.OK : POP3Response.ERR);
67             
68             // Message
69 response.setMessage(matcher.group(3));
70             
71             return response;
72         } else {
73             throw new ParserException( "Malformed POP3 response : "+line );
74         }
75         
76     }
77
78 }
79
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