1 /*
2 * Copyright (C) 2019, Matthias Sohn <matthias.sohn@sap.com>
3 * and other copyright owners as documented in the project's IP log.
4 *
5 * This program and the accompanying materials are made available
6 * under the terms of the Eclipse Distribution License v1.0 which
7 * accompanies this distribution, is reproduced below, and is
8 * available at http://www.eclipse.org/org/documents/edl-v10.php
9 *
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 *
19 * - Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials provided
22 * with the distribution.
23 *
24 * - Neither the name of the Eclipse Foundation, Inc. nor the
25 * names of its contributors may be used to endorse or promote
26 * products derived from this software without specific prior
27 * written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
30 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
31 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
32 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
34 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
35 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
36 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
37 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
38 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
41 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
42 */
43 package org.eclipse.jgit.junit.time;
44
45 import java.io.IOException;
46 import java.io.UncheckedIOException;
47 import java.nio.file.Files;
48 import java.nio.file.Path;
49 import java.nio.file.attribute.FileTime;
50 import java.time.Instant;
51
52 import org.eclipse.jgit.util.FS;
53
54 /**
55 * Utility methods for handling timestamps
56 */
57 public class TimeUtil {
58 /**
59 * Set the lastModified time of a given file by adding a given offset to the
60 * current lastModified time
61 *
62 * @param path
63 * path of a file to set last modified
64 * @param offsetMillis
65 * offset in milliseconds, if negative the new lastModified time
66 * is offset before the original lastModified time, otherwise
67 * after the original time
68 * @return the new lastModified time
69 */
70 public static Instant setLastModifiedWithOffset(Path path,
71 long offsetMillis) {
72 Instant mTime = FS.DETECTED.lastModifiedInstant(path)
73 .plusMillis(offsetMillis);
74 try {
75 Files.setLastModifiedTime(path, FileTime.from(mTime));
76 return mTime;
77 } catch (IOException e) {
78 throw new UncheckedIOException(e);
79 }
80 }
81
82 /**
83 * Set the lastModified time of file a to the one from file b
84 *
85 * @param a
86 * file to set lastModified time
87 * @param b
88 * file to read lastModified time from
89 */
90 public static void setLastModifiedOf(Path a, Path b) {
91 Instant mTime = FS.DETECTED.lastModifiedInstant(b);
92 try {
93 Files.setLastModifiedTime(a, FileTime.from(mTime));
94 } catch (IOException e) {
95 throw new UncheckedIOException(e);
96 }
97 }
98
99 }