1 /*
2 * This file is part of dependency-check-core.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *
16 * Copyright (c) 2014 Jeremy Long. All Rights Reserved.
17 */
18 package org.owasp.dependencycheck.utils;
19
20 /**
21 *
22 * @author Jeremy Long
23 */
24 public final class DateUtil {
25
26 /**
27 * Private constructor for utility class.
28 */
29 private DateUtil() {
30 }
31
32 /**
33 * Determines if the epoch date is within the range specified of the compareTo epoch time. This takes the
34 * (compareTo-date)/1000/60/60/24 to get the number of days. If the calculated days is less then the range the date
35 * is considered valid.
36 *
37 * @param date the date to be checked.
38 * @param compareTo the date to compare to.
39 * @param range the range in days to be considered valid.
40 * @return whether or not the date is within the range.
41 */
42 public static boolean withinDateRange(long date, long compareTo, int range) {
43 final double differenceInDays = (compareTo - date) / 1000.0 / 60.0 / 60.0 / 24.0;
44 return differenceInDays < range;
45 }
46 }