1   /**
2    * Copyright (c) 2000-2008 Liferay, Inc. All rights reserved.
3    *
4    * Permission is hereby granted, free of charge, to any person obtaining a copy
5    * of this software and associated documentation files (the "Software"), to deal
6    * in the Software without restriction, including without limitation the rights
7    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    * copies of the Software, and to permit persons to whom the Software is
9    * furnished to do so, subject to the following conditions:
10   *
11   * The above copyright notice and this permission notice shall be included in
12   * all copies or substantial portions of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.portal.security.auth;
24  
25  import com.liferay.portal.NoSuchUserException;
26  import com.liferay.portal.kernel.util.StringPool;
27  import com.liferay.portal.kernel.util.StringUtil;
28  import com.liferay.portal.service.UserLocalServiceUtil;
29  
30  /**
31   * <a href="ScreenNameGenerator.java.html"><b><i>View Source</i></b></a>
32   *
33   * @author Brian Wing Shun Chan
34   * @author Alexander Chow
35   *
36   */
37  public class ScreenNameGenerator {
38  
39      public String generate(long companyId, long userId, String emailAddress)
40          throws Exception {
41  
42          String screenName = StringUtil.extractFirst(
43              emailAddress, StringPool.AT).toLowerCase();
44  
45          screenName = StringUtil.replace(
46              screenName,
47              new String[] {StringPool.SLASH, StringPool.UNDERLINE},
48              new String[] {StringPool.PERIOD, StringPool.PERIOD});
49  
50          if (screenName.equals(ScreenNameValidator.CYRUS) ||
51              screenName.equals(ScreenNameValidator.POSTFIX)) {
52  
53              screenName += StringPool.PERIOD + userId;
54          }
55  
56          try {
57              UserLocalServiceUtil.getUserByScreenName(companyId, screenName);
58          }
59          catch (NoSuchUserException nsue) {
60              return screenName;
61          }
62  
63          for (int i = 1;; i++) {
64              String tempScreenName = screenName + StringPool.PERIOD + i;
65  
66              try {
67                  UserLocalServiceUtil.getUserByScreenName(
68                      companyId, tempScreenName);
69              }
70              catch (NoSuchUserException nsue) {
71                  screenName = tempScreenName;
72  
73                  break;
74              }
75          }
76  
77          return screenName;
78      }
79  
80  }