1   /**
2    * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3    *
4    * The contents of this file are subject to the terms of the Liferay Enterprise
5    * Subscription License ("License"). You may not use this file except in
6    * compliance with the License. You can obtain a copy of the License by
7    * contacting Liferay, Inc. See the License for the specific language governing
8    * permissions and limitations under the License, including but not limited to
9    * distribution rights of the Software.
10   *
11   *
12   *
13   */
14  
15  package com.liferay.portal.kernel.util;
16  
17  import java.io.IOException;
18  import java.io.InputStream;
19  
20  import java.util.Enumeration;
21  import java.util.HashMap;
22  import java.util.Iterator;
23  import java.util.Map;
24  import java.util.NoSuchElementException;
25  import java.util.ResourceBundle;
26  import java.util.Set;
27  
28  /**
29   * <a href="PropertyResourceBundle.java.html"><b><i>View Source</i></b></a>
30   *
31   * @author Shuyang Zhou
32   * @author Brian Wing Shun Chan
33   */
34  public class PropertyResourceBundle extends ResourceBundle {
35  
36      @SuppressWarnings("rawtypes")
37      public PropertyResourceBundle(String string, String charsetName)
38          throws IOException {
39  
40          _map = new HashMap(PropertiesUtil.load(string, charsetName));
41      }
42  
43      @SuppressWarnings("rawtypes")
44      public PropertyResourceBundle(InputStream inputStream, String charsetName)
45          throws IOException {
46  
47          _map = new HashMap(PropertiesUtil.load(inputStream, charsetName));
48      }
49  
50      public Object handleGetObject(String key) {
51          if (key == null) {
52              throw new NullPointerException();
53          }
54  
55          return _map.get(key);
56      }
57  
58      public Enumeration<String> getKeys() {
59          final Set<String> keys = _map.keySet();
60  
61          final Enumeration<String> parentKeys = parent.getKeys();
62  
63          final Iterator<String> itr = keys.iterator();
64  
65          return new Enumeration<String>() {
66              String next = null;
67  
68              public boolean hasMoreElements() {
69                  if (next == null) {
70                      if (itr.hasNext()) {
71                          next = itr.next();
72                      }
73                      else if (parentKeys != null) {
74                          while ((next == null) && parentKeys.hasMoreElements()) {
75                              next = parentKeys.nextElement();
76  
77                              if (keys.contains(next)) {
78                                  next = null;
79                              }
80                          }
81                      }
82                  }
83  
84                  if (next != null) {
85                      return true;
86                  }
87                  else {
88                      return false;
89                  }
90              }
91  
92              public String nextElement() {
93                  if (hasMoreElements()) {
94                      String result = next;
95  
96                      next = null;
97  
98                      return result;
99                  }
100                 else {
101                     throw new NoSuchElementException();
102                 }
103             }
104         };
105     }
106 
107     private Map<String, String> _map;
108 
109 }