1   /**
2    * Copyright (c) 2000-2009 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.util;
24  
25  import com.liferay.portal.kernel.util.ArrayUtil;
26  import com.liferay.portal.kernel.util.CharPool;
27  import com.liferay.portal.kernel.util.GetterUtil;
28  import com.liferay.portal.kernel.util.StringPool;
29  import com.liferay.portal.kernel.util.StringUtil;
30  import com.liferay.portal.kernel.util.Validator;
31  import com.liferay.util.Normalizer;
32  
33  /**
34   * <a href="FriendlyURLNormalizer.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Brian Wing Shun Chan
37   *
38   */
39  public class FriendlyURLNormalizer {
40  
41      public static String normalize(String friendlyURL) {
42          return normalize(friendlyURL, null);
43      }
44  
45      public static String normalize(String friendlyURL, char[] replaceChars) {
46          if (Validator.isNull(friendlyURL)) {
47              return friendlyURL;
48          }
49  
50          friendlyURL = GetterUtil.getString(friendlyURL);
51          friendlyURL = friendlyURL.toLowerCase();
52          friendlyURL = Normalizer.normalizeToAscii(friendlyURL);
53  
54          char[] charArray = friendlyURL.toCharArray();
55  
56          for (int i = 0; i < charArray.length; i++) {
57              char oldChar = charArray[i];
58  
59              char newChar = oldChar;
60  
61              if (ArrayUtil.contains(_REPLACE_CHARS, oldChar) ||
62                  ((replaceChars != null) &&
63                   ArrayUtil.contains(replaceChars, oldChar))) {
64  
65                  newChar = CharPool.DASH;
66              }
67  
68              if (oldChar != newChar) {
69                  charArray[i] = newChar;
70              }
71          }
72  
73          friendlyURL = new String(charArray);
74  
75          while (friendlyURL.contains(StringPool.DASH + StringPool.DASH)) {
76              friendlyURL = StringUtil.replace(
77                  friendlyURL, StringPool.DASH + StringPool.DASH,
78                  StringPool.DASH);
79          }
80  
81          if (friendlyURL.startsWith(StringPool.DASH)) {
82              friendlyURL = friendlyURL.substring(1, friendlyURL.length());
83          }
84  
85          if (friendlyURL.endsWith(StringPool.DASH)) {
86              friendlyURL = friendlyURL.substring(0, friendlyURL.length() - 1);
87          }
88  
89          return friendlyURL;
90      }
91  
92      private static final char[] _REPLACE_CHARS = new char[] {
93          ' ', ',', '\\', '\'', '\"', '(', ')', '{', '}'
94      };
95  
96  }