diff options
Diffstat (limited to 'src/misc/getopt_long.c')
| -rw-r--r-- | src/misc/getopt_long.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/src/misc/getopt_long.c b/src/misc/getopt_long.c index df2083bb..45992f85 100644 --- a/src/misc/getopt_long.c +++ b/src/misc/getopt_long.c @@ -2,6 +2,7 @@ #include <stddef.h> #include <getopt.h> #include <stdio.h> +#include <string.h> extern int __optpos, __optreset; @@ -15,11 +16,14 @@ static void permute(char *const *argv, int dest, int src) av[dest] = tmp; } +void __getopt_msg(const char *, const char *, const char *, size_t); + 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; + const char *optstring2 = optstring + 1; if (!optind || __optreset) { __optreset = 0; __optpos = 0; @@ -34,9 +38,10 @@ static int __getopt_long(int argc, char *const *argv, const char *optstring, con if (argv[i][0] == '-' && argv[i][1]) break; } optind = i; + optstring2 = optstring; } resumed = optind; - ret = __getopt_long_core(argc, argv, optstring, longopts, idx, longonly); + ret = __getopt_long_core(argc, argv, optstring2, longopts, idx, longonly); if (resumed > skipped) { int i, cnt = optind-resumed; for (i=0; i<cnt; i++) @@ -72,12 +77,27 @@ static int __getopt_long_core(int argc, char *const *argv, const char *optstring i = match; optind++; if (*opt == '=') { - if (!longopts[i].has_arg) return '?'; + if (!longopts[i].has_arg) { + if (optstring[0] == ':' || !opterr) + return '?'; + __getopt_msg(argv[0], + ": option does not take an argument: ", + longopts[i].name, + strlen(longopts[i].name)); + return '?'; + } optarg = opt+1; } else { if (longopts[i].has_arg == required_argument) { - if (!(optarg = argv[optind])) - return ':'; + if (!(optarg = argv[optind])) { + if (optstring[0] == ':' || !opterr) + return ':'; + __getopt_msg(argv[0], + ": option requires an argument: ", + longopts[i].name, + strlen(longopts[i].name)); + return '?'; + } optind++; } else optarg = NULL; } @@ -89,6 +109,12 @@ static int __getopt_long_core(int argc, char *const *argv, const char *optstring return longopts[i].val; } if (argv[optind][1] == '-') { + if (optstring[0] != ':' && opterr) + __getopt_msg(argv[0], cnt ? + ": option is ambiguous: " : + ": unrecognized option: ", + argv[optind]+2, + strlen(argv[optind]+2)); optind++; return '?'; } |