blob: cc2435b9404b1e3ad6feef48578f24f50194e520 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
/*
This file is part of TALER
(C) 2017 GNUnet e.V.
TALER is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3, or (at your option) any later version.
TALER is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
/**
* Semantic versioning, but libtool-style.
* See https://www.gnu.org/software/libtool/manual/html_node/Libtool-versioning.html
*/
/**
* Result of comparing two libtool versions.
*/
export interface VersionMatchResult {
/**
* Is the first version compatible with the second?
*/
compatible: boolean;
/**
* Is the first version older (-1), newser (+1) or
* identical (0)?
*/
currentCmp: number;
}
interface Version {
current: number;
revision: number;
age: number;
}
/**
* Compare two libtool-style version strings.
*/
export function compare(me: string, other: string): VersionMatchResult|undefined {
const meVer = parseVersion(me);
const otherVer = parseVersion(other);
if (!(meVer && otherVer)) {
return undefined;
}
const compatible = (meVer.current - meVer.age <= otherVer.current &&
meVer.current >= (otherVer.current - otherVer.age));
const currentCmp = Math.sign(meVer.current - otherVer.current);
return {compatible, currentCmp};
}
function parseVersion(v: string): Version|undefined {
const [currentStr, revisionStr, ageStr, ...rest] = v.split(":");
if (rest.length !== 0) {
return undefined;
}
const current = Number.parseInt(currentStr);
const revision = Number.parseInt(revisionStr);
const age = Number.parseInt(ageStr);
if (Number.isNaN(current)) {
return undefined;
}
if (Number.isNaN(revision)) {
return undefined;
}
if (Number.isNaN(age)) {
return undefined;
}
return {current, revision, age};
}
|
