01: // The contents of this file are subject to the Mozilla Public License Version
02: // 1.1
03: //(the "License"); you may not use this file except in compliance with the
04: //License. You may obtain a copy of the License at http://www.mozilla.org/MPL/
05: //
06: //Software distributed under the License is distributed on an "AS IS" basis,
07: //WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
08: //for the specific language governing rights and
09: //limitations under the License.
10: //
11: //The Original Code is "The Columba Project"
12: //
13: //The Initial Developers of the Original Code are Frederik Dietz and Timo
14: // Stich.
15: //Portions created by Frederik Dietz and Timo Stich are Copyright (C) 2003.
16: //
17: //All Rights Reserved.
18: package org.columba.mail.spam.rules;
19:
20: import org.columba.mail.folder.IMailbox;
21: import org.columba.ristretto.message.Header;
22:
23: /**
24: * Check if subject contains a "[spam]" tag.
25: *
26: * @author fdietz
27: */
28: public class SubjectContainsSpamRule extends AbstractRule {
29:
30: /**
31: * @param name
32: */
33: public SubjectContainsSpamRule() {
34: super ("SubjectContainsSpamRule");
35:
36: }
37:
38: /**
39: * @see org.columba.mail.spam.rules.Rule#score(IMailbox, java.lang.Object)
40: */
41: public float score(IMailbox folder, Object uid) throws Exception {
42: Header header = folder.getHeaderFields(uid,
43: new String[] { "Subject" });
44: String subject = header.get("Subject");
45: if (subject == null)
46: return NEARLY_ZERO;
47: if (subject.length() == 0)
48: return NEARLY_ZERO;
49:
50: // convert to lower-case
51: subject = subject.toLowerCase();
52:
53: if (subject.indexOf("[spam]") != -1)
54: return MAX_PROBABILITY;
55:
56: return NEARLY_ZERO;
57: }
58:
59: }
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