1 ///////////////////////////////////////////////////////////////////////////////////////////////
2 // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
3 // Copyright (C) 2001-2024 the original author or authors.
4 //
5 // This library is free software; you can redistribute it and/or
6 // modify it under the terms of the GNU Lesser General Public
7 // License as published by the Free Software Foundation; either
8 // version 2.1 of the License, or (at your option) any later version.
9 //
10 // This library 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 GNU
13 // Lesser General Public License for more details.
14 //
15 // You should have received a copy of the GNU Lesser General Public
16 // License along with this library; if not, write to the Free Software
17 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 ///////////////////////////////////////////////////////////////////////////////////////////////
19
20 package com.puppycrawl.tools.checkstyle.utils;
21
22 import java.io.IOException;
23 import java.nio.file.Files;
24 import java.nio.file.Path;
25
26 /**
27 * Class which provides OS related utilities.
28 */
29 public final class OsSpecificUtil {
30
31 /**
32 * Hiding public and default constructor.
33 */
34 private OsSpecificUtil() {
35
36 }
37
38 /**
39 * Updates the specified directory by resolving symbolic links, ensuring it exists,
40 * and creating any necessary parent directories. If the provided path is a symbolic
41 * link, it resolves it to the actual directory, throwing an IOException if the
42 * resolved path is not a directory. Creates directories if they do not exist.
43 *
44 * @param directory The path to the directory to be updated.
45 * @throws IOException If an I/O error occurs or if the resolved symbolic link is
46 * not a directory.
47 */
48 public static void updateDirectory(Path directory) throws IOException {
49 Path targetDirectory = directory;
50
51 if (Files.isSymbolicLink(directory)) {
52 final Path actualDir = directory.toRealPath();
53
54 if (Files.isDirectory(actualDir)) {
55 targetDirectory = actualDir;
56 }
57 else {
58 throw new IOException("Resolved symbolic link "
59 + directory + " is not a directory.");
60 }
61 }
62 Files.createDirectories(targetDirectory);
63 }
64 }