diff options
author | pommicket <pommicket@gmail.com> | 2022-02-20 13:18:21 -0800 |
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committer | pommicket <pommicket@gmail.com> | 2022-02-20 13:18:21 -0800 |
commit | 9bc8a11afeed3569736b89754012e3ca22ee10f6 (patch) | |
tree | 5f0ec0d5c05f879b1ee86adfa654ed3ef2178d5f /05/musl-0.6.0/src/linux/getopt_long.c | |
parent | 0f97a589b800bdb71dda05984192f0f66a52edaa (diff) |
conclusion
Diffstat (limited to '05/musl-0.6.0/src/linux/getopt_long.c')
-rw-r--r-- | 05/musl-0.6.0/src/linux/getopt_long.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/05/musl-0.6.0/src/linux/getopt_long.c b/05/musl-0.6.0/src/linux/getopt_long.c new file mode 100644 index 0000000..d80cd1b --- /dev/null +++ b/05/musl-0.6.0/src/linux/getopt_long.c @@ -0,0 +1,52 @@ +#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++; + while (*name && *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); +} |