01: /*
02: * ProGuard -- shrinking, optimization, obfuscation, and preverification
03: * of Java bytecode.
04: *
05: * Copyright (c) 2002-2007 Eric Lafortune (eric@graphics.cornell.edu)
06: *
07: * This program is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU General Public License as published by the Free
09: * 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 java.io.*;
24:
25: /**
26: * This class can read a given file or directory, recursively, applying a given
27: * DataEntryReader to all files it comes across.
28: *
29: * @author Eric Lafortune
30: */
31: public class DirectoryPump implements DataEntryPump {
32: private final File directory;
33:
34: public DirectoryPump(File directory) {
35: this .directory = directory;
36: }
37:
38: // Implementations for DataEntryPump.
39:
40: public void pumpDataEntries(DataEntryReader dataEntryReader)
41: throws IOException {
42: if (!directory.exists()) {
43: throw new IOException("No such file or directory");
44: }
45:
46: readFiles(directory, dataEntryReader);
47: }
48:
49: /**
50: * Reads the given subdirectory recursively, applying the given DataEntryReader
51: * to all files that are encountered.
52: */
53: private void readFiles(File file, DataEntryReader dataEntryReader)
54: throws IOException {
55: if (file.isDirectory()) {
56: // Recurse into the subdirectory.
57: File[] files = file.listFiles();
58:
59: for (int index = 0; index < files.length; index++) {
60: readFiles(files[index], dataEntryReader);
61: }
62: } else {
63: dataEntryReader.read(new FileDataEntry(directory, file));
64: }
65: }
66: }
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