2 * Copyright (c) 1987, 1993, 1994
\r
3 * The Regents of the University of California. All rights reserved.
\r
5 * Redistribution and use in source and binary forms, with or without
\r
6 * modification, are permitted provided that the following conditions
\r
8 * 1. Redistributions of source code must retain the above copyright
\r
9 * notice, this list of conditions and the following disclaimer.
\r
10 * 2. Redistributions in binary form must reproduce the above copyright
\r
11 * notice, this list of conditions and the following disclaimer in the
\r
12 * documentation and/or other materials provided with the distribution.
\r
13 * 3. All advertising materials mentioning features or use of this software
\r
14 * must display the following acknowledgement:
\r
15 * This product includes software developed by the University of
\r
16 * California, Berkeley and its contributors.
\r
17 * 4. Neither the name of the University nor the names of its contributors
\r
18 * may be used to endorse or promote products derived from this software
\r
19 * without specific prior written permission.
\r
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
\r
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
\r
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
\r
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
\r
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
\r
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
\r
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
\r
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
\r
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
\r
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
\r
34 /* last review : october 29th, 2002 */
\r
36 #if defined(LIBC_SCCS) && !defined(lint)
\r
37 static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";
\r
38 #endif /* LIBC_SCCS and not lint */
\r
44 int opterr = 1, /* if error message should be printed */
\r
45 optind = 1, /* index into parent argv vector */
\r
46 optopt, /* character checked for validity */
\r
47 optreset; /* reset getopt */
\r
48 char *optarg; /* argument associated with option */
\r
50 #define BADCH (int)'?'
\r
51 #define BADARG (int)':'
\r
56 * Parse argc/argv argument vector.
\r
58 int getopt(int nargc, char *const *nargv, const char *ostr) {
\r
59 # define __progname nargv[0]
\r
60 static char *place = EMSG; /* option letter processing */
\r
61 char *oli; /* option letter list index */
\r
63 if (optreset || !*place) { /* update scanning pointer */
\r
65 if (optind >= nargc || *(place = nargv[optind]) != '-') {
\r
69 if (place[1] && *++place == '-') { /* found "--" */
\r
74 } /* option letter okay? */
\r
75 if ((optopt = (int) *place++) == (int) ':' ||
\r
76 !(oli = strchr(ostr, optopt))) {
\r
78 * if the user didn't specify '-' as an option,
\r
79 * assume it means -1.
\r
81 if (optopt == (int) '-')
\r
85 if (opterr && *ostr != ':')
\r
86 (void) fprintf(stderr,
\r
87 "%s: illegal option -- %c\n", __progname, optopt);
\r
90 if (*++oli != ':') { /* don't need argument */
\r
94 } else { /* need an argument */
\r
95 if (*place) /* no white space */
\r
97 else if (nargc <= ++optind) { /* no arg */
\r
102 (void) fprintf(stderr,
\r
103 "%s: option requires an argument -- %c\n",
\r
104 __progname, optopt);
\r
106 } else /* white space */
\r
107 optarg = nargv[optind];
\r
111 return (optopt); /* dump back option letter */
\r