|
68
|
1 /*
|
|
|
2 Copyright (c) 2008 Franklin Schmidt <fschmidt@gmail.com>
|
|
|
3
|
|
|
4 Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
|
5 of this software and associated documentation files (the "Software"), to deal
|
|
|
6 in the Software without restriction, including without limitation the rights
|
|
|
7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
|
8 copies of the Software, and to permit persons to whom the Software is
|
|
|
9 furnished to do so, subject to the following conditions:
|
|
|
10
|
|
|
11 The above copyright notice and this permission notice shall be included in
|
|
|
12 all copies or substantial portions of the Software.
|
|
|
13
|
|
|
14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
|
15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
|
16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
|
17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
|
18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
|
19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
|
20 THE SOFTWARE.
|
|
|
21 */
|
|
|
22
|
|
|
23 package fschmidt.util.java;
|
|
|
24
|
|
|
25 import java.util.regex.*;
|
|
|
26
|
|
|
27
|
|
|
28 public final class Version implements Comparable {
|
|
|
29 private final String name;
|
|
|
30 private final String name2;
|
|
|
31 private final int[] parts;
|
|
|
32 private static final Pattern p = Pattern.compile("^[0-9.]+");
|
|
|
33
|
|
|
34 public Version(String name) {
|
|
|
35 this.name = name;
|
|
|
36 Matcher m = p.matcher(name);
|
|
|
37 if( !m.find() )
|
|
|
38 throw new RuntimeException("invalid version: "+name);
|
|
|
39 this.name2 = m.group();
|
|
|
40 String[] a = name2.split("\\.");
|
|
|
41 parts = new int[a.length];
|
|
|
42 for( int i=0; i<a.length; i++ ) {
|
|
|
43 parts[i] = Integer.parseInt(a[i]);
|
|
|
44 }
|
|
|
45 }
|
|
|
46
|
|
|
47 public String toString() {
|
|
|
48 return name;
|
|
|
49 }
|
|
|
50
|
|
|
51 public int compareTo(Object o) {
|
|
|
52 Version v = (Version)o;
|
|
|
53 int n = Math.min(parts.length,v.parts.length);
|
|
|
54 for( int i=0; i<n; i++ ) {
|
|
|
55 int r = parts[i] - v.parts[i];
|
|
|
56 if( r != 0 )
|
|
|
57 return r;
|
|
|
58 }
|
|
|
59 return parts.length - v.parts.length;
|
|
|
60 }
|
|
|
61
|
|
|
62 public boolean equals(Object o) {
|
|
|
63 return o instanceof Version && compareTo(o)==0;
|
|
|
64 }
|
|
|
65
|
|
|
66 public int hashCode() {
|
|
|
67 return name2.hashCode();
|
|
|
68 }
|
|
|
69
|
|
|
70 }
|
