mirror of
https://github.com/fluencelabs/musl
synced 2025-06-02 01:21:34 +00:00
030e526392
based on proposed patches by Daniel Cegiełka, with minor changes: - use a weak symbol for optreset so it doesn't clash with namespace - also reset optpos (position in multi-option arg like -lR) - also make getopt_long support reset
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
#define _GNU_SOURCE
|
|
#include <stddef.h>
|
|
#include <getopt.h>
|
|
#include <stdio.h>
|
|
|
|
extern int __optpos, __optreset;
|
|
|
|
static int __getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly)
|
|
{
|
|
if (!optind || __optreset) {
|
|
__optreset = 0;
|
|
__optpos = 0;
|
|
optind = 1;
|
|
}
|
|
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);
|
|
}
|