1 /*
2 * This file is part of *** M y C o R e ***
3 * See http://www.mycore.de/ for details.
4 *
5 * MyCoRe is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * MyCoRe is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with MyCoRe. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 package org.mycore.datamodel.niofs.utils;
20
21 import java.io.IOException;
22 import java.nio.file.FileVisitResult;
23 import java.nio.file.FileVisitor;
24 import java.nio.file.Files;
25 import java.nio.file.Path;
26 import java.nio.file.SimpleFileVisitor;
27 import java.nio.file.attribute.BasicFileAttributes;
28
29 /**
30 * A {@link FileVisitor} to delete a directory recursivly
31 * <pre>
32 * Files.walkFileTree(rootPath, MCRRecursiveDeleter.instance())
33 * </pre>
34 * @author Thomas Scheffler (yagee)
35 *
36 */
37 public final class MCRRecursiveDeleter extends SimpleFileVisitor<Path> {
38
39 private static final MCRRecursiveDeleter INSTANCE = new MCRRecursiveDeleter();
40
41 private MCRRecursiveDeleter() {
42 }
43
44 public static MCRRecursiveDeleter instance() {
45 return INSTANCE;
46 }
47
48 @Override
49 public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) throws IOException {
50 Files.delete(file);
51 return super.visitFile(file, attrs);
52 }
53
54 @Override
55 public FileVisitResult postVisitDirectory(Path dir, IOException exc) throws IOException {
56 if (exc != null) {
57 throw exc;
58 }
59 if (dir.getNameCount() > 0) {
60 Files.delete(dir);
61 }
62 return super.postVisitDirectory(dir, exc);
63 }
64 }