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
|
#define _GNU_SOURCE
#include <stddef.h>
#include <getopt.h>
#include <stdio.h>
static int __getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly)
{
if (optind >= argc || !argv[optind] || argv[optind][0] != '-') return -1;
if ((longonly && argv[optind][1]) ||
(argv[optind][1] == '-' && argv[optind][2]))
{
int i;
for (i=0; longopts[i].name; i++) {
const char *name = longopts[i].name;
char *opt = argv[optind]+1;
if (*opt == '-') opt++;
for (; *name && *name == *opt; name++, opt++);
if (*name || (*opt && *opt != '=')) continue;
if (*opt == '=') {
if (!longopts[i].has_arg) continue;
optarg = opt+1;
} else {
if (longopts[i].has_arg == required_argument) {
if (!(optarg = argv[++optind]))
return ':';
} else optarg = NULL;
}
optind++;
if (idx) *idx = i;
if (longopts[i].flag) {
*longopts[i].flag = longopts[i].val;
return 0;
}
return longopts[i].val;
}
if (argv[optind][1] == '-') {
optind++;
return '?';
}
}
return getopt(argc, argv, optstring);
}
int getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx)
{
return __getopt_long(argc, argv, optstring, longopts, idx, 0);
}
int getopt_long_only(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx)
{
return __getopt_long(argc, argv, optstring, longopts, idx, 1);
}
|
