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
]);