7 extern int __optpos, __optreset;
9 static void permute(char *const *argv, int dest, int src)
11 char **av = (char **)argv;
14 for (i=src; i>dest; i--)
19 void __getopt_msg(const char *, const char *, const char *, size_t);
21 static int __getopt_long_core(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly);
23 static int __getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly)
25 int ret, skipped, resumed;
26 if (!optind || __optreset) {
31 if (optind >= argc || !argv[optind]) return -1;
33 if (optstring[0] != '+' && optstring[0] != '-') {
35 for (i=optind; ; i++) {
36 if (i >= argc || !argv[i]) return -1;
37 if (argv[i][0] == '-' && argv[i][1]) break;
42 ret = __getopt_long_core(argc, argv, optstring, longopts, idx, longonly);
43 if (resumed > skipped) {
44 int i, cnt = optind-resumed;
46 permute(argv, skipped, optind-1);
47 optind = skipped + cnt;
52 static int __getopt_long_core(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly)
55 if (longopts && argv[optind][0] == '-' &&
56 ((longonly && argv[optind][1] && argv[optind][1] != '-') ||
57 (argv[optind][1] == '-' && argv[optind][2])))
59 int colon = optstring[optstring[0]=='+'||optstring[0]=='-']==':';
62 for (cnt=i=0; longopts[i].name; i++) {
63 const char *name = longopts[i].name;
65 if (*opt == '-') opt++;
66 for (; *name && *name == *opt; name++, opt++);
67 if (*opt && *opt != '=') continue;
79 if (!longopts[i].has_arg) {
80 optopt = longopts[i].val;
84 ": option does not take an argument: ",
86 strlen(longopts[i].name));
90 } else if (longopts[i].has_arg == required_argument) {
91 if (!(optarg = argv[optind])) {
92 optopt = longopts[i].val;
93 if (colon) return ':';
94 if (!opterr) return '?';
96 ": option requires an argument: ",
98 strlen(longopts[i].name));
104 if (longopts[i].flag) {
105 *longopts[i].flag = longopts[i].val;
108 return longopts[i].val;
110 if (argv[optind][1] == '-') {
112 if (!colon && opterr)
113 __getopt_msg(argv[0], cnt ?
114 ": option is ambiguous: " :
115 ": unrecognized option: ",
117 strlen(argv[optind]+2));
122 return getopt(argc, argv, optstring);
125 int getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx)
127 return __getopt_long(argc, argv, optstring, longopts, idx, 0);
130 int getopt_long_only(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx)
132 return __getopt_long(argc, argv, optstring, longopts, idx, 1);