View Javadoc
1   /*
2    * Copyright 2004 Diogo Quintela (dquintela@users.sourceforge.net)
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  package net.sf.whatsnew.filter.impl;
17  
18  import java.util.ArrayList;
19  import java.util.List;
20  
21  import net.sf.whatsnew.filter.Filter;
22  
23  
24  /***
25   * <p>
26   * An Filter implementation which trims spaces of strings
27   * </p>
28   *
29   * @author <a href="mailto:dquintela@users.sourceforge.net">Diogo Quintela</a>
30   * @version $Id: TrimSpacesFilter.java,v 1.1 2004/05/13 01:22:35 dquintela Exp $
31   */
32  public class TrimSpacesFilter
33  implements Filter {
34      /***
35       * Process an array of Strings
36       *
37       * @param input The array to process
38       *
39       * @return The filtered output
40       */
41      public String[] filter(String[] input) {
42          List retVal = new ArrayList();
43  
44          // Trim spaces and empty lines in beggining and end
45          for (int i = 0; i < input.length; i++) {
46              retVal.add(input[i].trim());
47          }
48  
49          // Remove starting and ending lines
50          while ((retVal.size() > 0) && ((String) retVal.get(0)).equals("")) {
51              retVal.remove(0);
52          }
53          while ((retVal.size() > 0)
54                  && ((String) retVal.get(retVal.size() - 1)).equals("")) {
55              retVal.remove(retVal.size() - 1);
56          }
57  
58          return (String[]) retVal.toArray(new String[0]);
59      }
60  }
61  // EOF