1 /* $NetBSD: getopt.c,v 1.26 2003/08/07 16:43:40 agc Exp $ */
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36 #if defined(LIBC_SCCS) && !defined(lint)
37 static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";
38 #endif /* LIBC_SCCS and not lint */
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
42 #include "namespace.h"
47 #include "un-namespace.h"
49 #include "libc_private.h"
51 int opterr = 1, /* if error message should be printed */
52 optind = 1, /* index into parent argv vector */
53 optopt, /* character checked for validity */
54 optreset; /* reset getopt */
55 char *optarg; /* argument associated with option */
57 #define BADCH (int)'?'
58 #define BADARG (int)':'
63 * Parse argc/argv argument vector.
66 getopt(nargc, nargv, ostr)
71 static char *place = EMSG; /* option letter processing */
72 char *oli; /* option letter list index */
74 if (optreset || *place == 0) { /* update scanning pointer */
76 place = nargv[optind];
77 if (optind >= nargc || *place++ != '-') {
78 /* Argument is absent or is not an option */
83 if (optopt == '-' && *place == 0) {
84 /* "--" => end of options */
90 /* Solitary '-', treat as a '-' option
91 if the program (eg su) is looking for it. */
93 if (strchr(ostr, '-') == NULL)
100 /* See if option letter is one the caller wanted... */
101 if (optopt == ':' || (oli = strchr(ostr, optopt)) == NULL) {
104 if (opterr && *ostr != ':')
105 (void)fprintf(stderr,
106 "%s: illegal option -- %c\n", _getprogname(),
111 /* Does this option need an argument? */
113 /* don't need argument */
118 /* Option-argument is either the rest of this argument or the
119 entire next argument. */
122 else if (nargc > ++optind)
123 optarg = nargv[optind];
125 /* option-argument absent */
130 (void)fprintf(stderr,
131 "%s: option requires an argument -- %c\n",
132 _getprogname(), optopt);
138 return (optopt); /* return option letter */