KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > proguard > io > ClassFilter


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.io;
22
23 import proguard.classfile.*;
24 import proguard.util.*;
25
26 import java.io.*;
27
28
29 /**
30  * This DataEntryReader delegates to one of two other DataEntryReader instances,
31  * depending on the extension of the data entry.
32  *
33  * @author Eric Lafortune
34  */

35 public class ClassFilter implements DataEntryReader
36 {
37     private FilteredDataEntryReader filteredDataEntryReader;
38
39
40     /**
41      * Creates a new ClassFilter that delegates reading classes to the
42      * given reader.
43      */

44     public ClassFilter(DataEntryReader classReader)
45     {
46         this(classReader, null);
47     }
48
49
50     /**
51      * Creates a new ClassFilter that delegates to either of the two given
52      * readers.
53      */

54     public ClassFilter(DataEntryReader classReader,
55                        DataEntryReader dataEntryReader)
56     {
57         filteredDataEntryReader =
58             new FilteredDataEntryReader(
59             new DataEntryNameFilter(
60             new ExtensionMatcher(ClassConstants.CLASS_FILE_EXTENSION)),
61             classReader,
62             dataEntryReader);
63     }
64
65
66     // Implementations for DataEntryReader.
67

68     public void read(DataEntry dataEntry) throws IOException
69     {
70         filteredDataEntryReader.read(dataEntry);
71     }
72 }
73
Popular Tags