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
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/* This file is part of Mailfromd.
Copyright (C) 2005-2018 Sergey Poznyakoff
This program 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.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "libmf.h"
#include <stdlib.h>
int
mf_vercmp(const char *a, const char *b, int *pres)
{
int res = 0;
if (!pres)
pres = &res;
if (!a || !*a) {
*pres = 0;
return -1;
}
if (!b || !*b) {
*pres = 1;
return -1;
}
while (1) {
char *p;
unsigned long an, bn;
if (!a) {
if (b) {
strtoul(b, &p, 10);
if (*p && *p != '.') {
*pres = 1;
return -1;
}
*pres = -1;
} else
*pres = 0;
break;
}
if (!b) {
if (a) {
strtoul(a, &p, 10);
if (*p && *p != '.') {
*pres = 0;
return -1;
}
*pres = 1;
} else
*pres = 0;
break;
}
an = strtoul(a, &p, 10);
if (*p) {
if (*p != '.') {
*pres = 0;
return -1;
}
a = p + 1;
} else
a = NULL;
bn = strtoul(b, &p, 10);
if (*p) {
if (*p != '.') {
*pres = 1;
return -1;
}
b = p + 1;
} else
b = NULL;
if (an < bn) {
*pres = -1;
break;
}
if (an > bn) {
*pres = 1;
break;
}
}
return *pres != 0;
}
|