1 /* $NetBSD: getopt.c,v 1.29 2014/06/05 22:00:22 christos Exp $ */
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35 #if !defined(HAVE_GETOPT) || defined(WANT_GETOPT_LONG) || defined(BROKEN_GETOPT)
36 #include <sys/cdefs.h>
43 #define BADCH (int)'?'
44 #define BADARG (int)':'
47 int opterr = 1, /* if error message should be printed */
48 optind = 1, /* index into parent argv vector */
49 optopt = BADCH, /* character checked for validity */
50 optreset; /* reset getopt */
51 char *optarg; /* argument associated with option */
55 * Parse argc/argv argument vector.
58 getopt(int nargc, char * const nargv[], const char *ostr)
60 extern char *__progname;
61 static const char *place = EMSG; /* option letter processing */
62 char *oli; /* option letter list index */
66 if (__progname = strrchr(nargv[0], '/'))
69 __progname = nargv[0];
73 if (optreset || *place == 0) { /* update scanning pointer */
75 place = nargv[optind];
76 if (optind >= nargc || *place++ != '-') {
77 /* Argument is absent or is not an option */
82 if (optopt == '-' && *place == 0) {
83 /* "--" => end of options */
89 /* Solitary '-', treat as a '-' option
90 if the program (eg su) is looking for it. */
92 if (strchr(ostr, '-') == NULL)
99 /* See if option letter is one the caller wanted... */
100 if (optopt == ':' || (oli = strchr(ostr, optopt)) == NULL) {
103 if (opterr && *ostr != ':')
104 (void)fprintf(stderr,
105 "%s: unknown option -- %c\n", __progname, optopt);
109 /* Does this option need an argument? */
111 /* don't need argument */
116 /* Option-argument is either the rest of this argument or the
117 entire next argument. */
119 optarg = __UNCONST(place);
120 else if (oli[2] == ':')
122 * GNU Extension, for optional arguments if the rest of
123 * the argument is empty, we return NULL
126 else if (nargc > ++optind)
127 optarg = nargv[optind];
129 /* option-argument absent */
134 (void)fprintf(stderr,
135 "%s: option requires an argument -- %c\n",
142 return (optopt); /* return option letter */
156 char *opts = argv[1];
161 while ((c = getopt(argc, argv, opts)) != EOF) {
165 printf("--%s ", optarg);
172 printf("-%c %s ", c, optarg);
181 for (; optind < argc; ++optind) {
182 printf("%s ", argv[optind]);