2 * Copyright (c) 1987, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
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9 * notice, this list of conditions and the following disclaimer.
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13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
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18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_OPTRESET)
37 #if defined(LIBC_SCCS) && !defined(lint)
38 static char *rcsid = "$OpenBSD: getopt.c,v 1.4 2002/12/08 22:57:14 millert Exp $";
39 #endif /* LIBC_SCCS and not lint */
45 int BSDopterr = 1, /* if error message should be printed */
46 BSDoptind = 1, /* index into parent argv vector */
47 BSDoptopt, /* character checked for validity */
48 BSDoptreset; /* reset getopt */
49 char *BSDoptarg; /* argument associated with option */
51 #define BADCH (int)'?'
52 #define BADARG (int)':'
57 * Parse argc/argv argument vector.
60 BSDgetopt(nargc, nargv, ostr)
65 extern char *__progname;
66 static char *place = EMSG; /* option letter processing */
67 char *oli; /* option letter list index */
72 if (BSDoptreset || !*place) { /* update scanning pointer */
74 if (BSDoptind >= nargc || *(place = nargv[BSDoptind]) != '-') {
78 if (place[1] && *++place == '-') { /* found "--" */
83 } /* option letter okay? */
84 if ((BSDoptopt = (int)*place++) == (int)':' ||
85 !(oli = strchr(ostr, BSDoptopt))) {
87 * if the user didn't specify '-' as an option,
90 if (BSDoptopt == (int)'-')
94 if (BSDopterr && *ostr != ':')
96 "%s: illegal option -- %c\n", __progname, BSDoptopt);
99 if (*++oli != ':') { /* don't need argument */
104 else { /* need an argument */
105 if (*place) /* no white space */
107 else if (nargc <= ++BSDoptind) { /* no arg */
112 (void)fprintf(stderr,
113 "%s: option requires an argument -- %c\n",
114 __progname, BSDoptopt);
117 else /* white space */
118 BSDoptarg = nargv[BSDoptind];
122 return (BSDoptopt); /* dump back option letter */
125 #endif /* !defined(HAVE_GETOPT) || !defined(HAVE_OPTRESET) */