1 /**
2 * This file Copyright (c) 2003-2014 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.module.model;
35
36 /**
37 * Module dependencies can use a range syntax for versions.
38 * @see info.magnolia.module.model.VersionRangeTest for examples.
39 *
40 * @author gjoseph
41 * @version $Revision: $ ($Author: $)
42 */
43 public class VersionRange {
44 private static final char separator = '/';
45
46 private final Version from;
47 private final Version to;
48
49 public VersionRange(String input) {
50 final String rangeDef = input == null ? "*" : input;
51 final int sepIdx = rangeDef.indexOf(separator);
52 if (sepIdx < 0) {
53 this.from = newVersion(rangeDef, Version.UNDEFINED_FROM);
54 this.to = newVersion(rangeDef, Version.UNDEFINED_TO);
55 } else {
56 this.from = newVersion(rangeDef.substring(0, sepIdx), Version.UNDEFINED_FROM);
57 this.to = newVersion(rangeDef.substring(sepIdx + 1), Version.UNDEFINED_TO);
58 }
59 validate();
60 }
61
62 public VersionRange(Version from, Version to) {
63 this.from = from;
64 this.to = to;
65 validate();
66 }
67
68 private Version newVersion(String rangeDef, Version ifUndefined) {
69 if ("*".equals(rangeDef.trim())) {
70 return ifUndefined;
71 }
72 return Version.parseVersion(rangeDef);
73 }
74
75 private void validate() {
76 if (from.isStrictlyAfter(to)) {
77 throw new IllegalArgumentException("Invalid range: " + from + "/" + to);
78 }
79 }
80
81 public Version getFrom() {
82 return from;
83 }
84
85 public Version getTo() {
86 return to;
87 }
88
89 public boolean contains(Version other) {
90 return other.isEquivalent(from) || (other.isStrictlyAfter(from) && other.isBeforeOrEquivalent(to));
91 }
92
93 @Override
94 public String toString() {
95 return from + "/" + to;
96 }
97 }