1   /**
2    * Copyright (c) 2000-2007 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.util;
24  
25  import com.liferay.portal.kernel.util.StringPool;
26  import com.liferay.portal.kernel.util.StringUtil;
27  
28  import java.io.BufferedReader;
29  import java.io.File;
30  import java.io.FileReader;
31  import java.io.IOException;
32  
33  import java.util.Set;
34  
35  /**
36   * <a href="SetUtil.java.html"><b><i>View Source</i></b></a>
37   *
38   * @author Brian Wing Shun Chan
39   *
40   */
41  public class SetUtil {
42  
43      public static Set fromArray(Object[] array) {
44          if ((array == null) || (array.length == 0)) {
45              return CollectionFactory.getHashSet();
46          }
47  
48          Set set = CollectionFactory.getHashSet(array.length);
49  
50          for (int i = 0; i < array.length; i++) {
51              set.add(array[i]);
52          }
53  
54          return set;
55      }
56  
57      public static Set fromFile(String fileName) throws IOException {
58          return fromFile(new File(fileName));
59      }
60  
61      public static Set fromFile(File file) throws IOException {
62          Set set = CollectionFactory.getHashSet();
63  
64          BufferedReader br = new BufferedReader(new FileReader(file));
65  
66          String s = StringPool.BLANK;
67  
68          while ((s = br.readLine()) != null) {
69              set.add(s);
70          }
71  
72          br.close();
73  
74          return set;
75      }
76  
77      public static Set fromString(String s) {
78          return fromArray(StringUtil.split(s, StringPool.NEW_LINE));
79      }
80  
81  }