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Java > Open Source Codes > proguard > ant > FilterElement


1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  * of Java bytecode.
4  *
5  * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 package proguard.ant;
22
23 import org.apache.tools.ant.types.DataType;
24
25 import java.util.List JavaDoc;
26
27 import proguard.util.ListUtil;
28
29 /**
30  * This DataType represents a name filter in Ant.
31  *
32  * @author Eric Lafortune
33  */
34 public class FilterElement extends DataType
35 {
36     private String JavaDoc filter;
37
38
39     /**
40      * Adds the contents of this element to the given name filter.
41      * @param filter the list of attributes to be extended.
42      */
43     public void appendTo(List JavaDoc filter)
44     {
45         // Get the referenced element, or else this one.
46 FilterElement filterElement = isReference() ?
47             (FilterElement)getCheckedRef(this.getClass(),
48                                          this.getClass().getName()) :
49             this;
50
51         String JavaDoc filterString = filterElement.filter;
52
53         if (filterString == null)
54         {
55             // Clear the filter to keep all names.
56 filter.clear();
57         }
58         else
59         {
60             // Append the filter.
61 filter.addAll(ListUtil.commaSeparatedList(filterString));
62         }
63     }
64
65
66     // Ant task attributes.
67
68     public void setFilter(String JavaDoc filter)
69     {
70         this.filter = filter;
71     }
72 }
73
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