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Java > Open Source Codes > org > apache > turbine > util > validation > EmailValidator


1 package org.apache.turbine.util.validation;
2
3 /*
4  * Copyright 2001-2004 The Apache Software Foundation.
5  *
6  * Licensed under the Apache License, Version 2.0 (the "License")
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18
19 /**
20  * @author <a HREF="mailto:mikeh@ncsa.uiuc.edu">Mike Haberman</a>
21  * @version $Id: EmailValidator.java,v 1.4.2.2 2004/05/20 03:28:02 seade Exp $
22  * @deprecated Use Intake or commons-validator
23  */
24 public class EmailValidator extends InputValidator
25 {
26     /**
27      * default Constructor,
28      */
29     public EmailValidator()
30     {
31         super(false, NoMaxSize, EmptyArgv);
32     }
33
34     /**
35      * @param String input, input to be checked
36      */
37     protected void check(String JavaDoc input)
38             throws Exception JavaDoc
39     {
40         // the only two checks:
41 // 1. @ must be present
42 // 2. must end in '.extension'
43
44         int idx = input.indexOf("@");
45         if (idx == -1)
46         {
47             throw new Exception JavaDoc("Missing @");
48         }
49
50         idx = input.lastIndexOf(".");
51         if (idx == -1)
52         {
53             throw new Exception JavaDoc("Missing .{top level domain} suffix");
54         }
55
56         String JavaDoc domain = input.substring(idx);
57         if (domain.length() < 3)
58         {
59             throw new Exception JavaDoc("Invalid .{top level domain} suffix");
60         }
61     }
62
63     /**
64      * @return String, the expected format of the input
65      */
66     public String JavaDoc getExpectedFormat()
67     {
68         return "name@domain.topLevelDomain";
69     }
70 }
71
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