mirror of https://git.musl-libc.org/git/musl
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
110 lines
2.7 KiB
110 lines
2.7 KiB
#define _GNU_SOURCE
|
|
#include <stddef.h>
|
|
#include <getopt.h>
|
|
#include <stdio.h>
|
|
|
|
extern int __optpos, __optreset;
|
|
|
|
static void permute(char *const *argv, int dest, int src)
|
|
{
|
|
char **av = (char **)argv;
|
|
char *tmp = av[src];
|
|
int i;
|
|
for (i=src; i>dest; i--)
|
|
av[i] = av[i-1];
|
|
av[dest] = tmp;
|
|
}
|
|
|
|
static int __getopt_long_core(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly);
|
|
|
|
static int __getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly)
|
|
{
|
|
int ret, skipped, resumed;
|
|
if (!optind || __optreset) {
|
|
__optreset = 0;
|
|
__optpos = 0;
|
|
optind = 1;
|
|
}
|
|
if (optind >= argc || !argv[optind]) return -1;
|
|
skipped = optind;
|
|
if (optstring[0] != '+' && optstring[0] != '-') {
|
|
int i;
|
|
for (i=optind; ; i++) {
|
|
if (i >= argc || !argv[i]) return -1;
|
|
if (argv[i][0] != '-') continue;
|
|
if (!argv[i][1]) continue;
|
|
if (argv[i][1] == '-' && !argv[i][2]) return -1;
|
|
break;
|
|
}
|
|
optind = i;
|
|
}
|
|
resumed = optind;
|
|
ret = __getopt_long_core(argc, argv, optstring, longopts, idx, longonly);
|
|
if (resumed > skipped) {
|
|
int i, cnt = optind-resumed;
|
|
for (i=0; i<cnt; i++)
|
|
permute(argv, skipped, optind-1);
|
|
optind = skipped + cnt;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int __getopt_long_core(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly)
|
|
{
|
|
|
|
if (argv[optind][0] == '-' &&
|
|
((longonly && argv[optind][1]) ||
|
|
(argv[optind][1] == '-' && argv[optind][2])))
|
|
{
|
|
int i, cnt, match;
|
|
char *opt;
|
|
for (cnt=i=0; longopts[i].name; i++) {
|
|
const char *name = longopts[i].name;
|
|
opt = argv[optind]+1;
|
|
if (*opt == '-') opt++;
|
|
for (; *name && *name == *opt; name++, opt++);
|
|
if (*opt && *opt != '=') continue;
|
|
match = i;
|
|
if (!*name) {
|
|
cnt = 1;
|
|
break;
|
|
}
|
|
cnt++;
|
|
}
|
|
if (cnt==1) {
|
|
i = match;
|
|
optind++;
|
|
if (*opt == '=') {
|
|
if (!longopts[i].has_arg) return '?';
|
|
optarg = opt+1;
|
|
} else {
|
|
if (longopts[i].has_arg == required_argument) {
|
|
if (!(optarg = argv[optind]))
|
|
return ':';
|
|
optind++;
|
|
} else optarg = NULL;
|
|
}
|
|
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);
|
|
}
|
|
|