2 * Copyright (c) 1987 Regents of the University of California.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
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.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * Fri Jun 13 10:39:00 1997, tfelix@fred.net:
34 * Ported to Win32, changed index/rindex to strchr/strrchr
39 #if defined(LIBC_SCCS) && !defined(lint)
40 static char sccsid
[] = "@(#)getopt.c 4.13 (Berkeley) 2/23/91";
41 #endif /* LIBC_SCCS and not lint */
44 * get option letter from argument vector
46 int opterr
= 1, /* if error message should be printed */
47 optind
= 1, /* index into parent argv vector */
48 optopt
; /* character checked for validity */
49 const char *optarg
; /* argument associated with option */
51 #define BADCH (int)'?'
55 getopt(int nargc
, char * const *nargv
, const char *ostr
)
57 static const char *place
= EMSG
; /* option letter processing */
58 register char *oli
; /* option letter list index */
61 if (!*place
) { /* update scanning pointer */
62 if (optind
>= nargc
|| *(place
= nargv
[optind
]) != '-') {
66 if (place
[1] && *++place
== '-') { /* found "--" */
71 } /* option letter okay? */
72 if ((optopt
= (int)*place
++) == (int)':' ||
73 !(oli
= strchr(ostr
, optopt
))) {
75 * if the user didn't specify '-' as an option,
76 * assume it means EOF.
78 if (optopt
== (int)'-')
83 if (!(p
= strrchr(*nargv
, '/')))
87 (void)fprintf(stderr
, "%s: illegal option -- %c\n",
92 if (*++oli
!= ':') { /* don't need argument */
97 else { /* need an argument */
98 if (*place
) /* no white space */
100 else if (nargc
<= ++optind
) { /* no arg */
102 if (!(p
= strrchr(*nargv
, '/')))
107 (void)fprintf(stderr
,
108 "%s: option requires an argument -- %c\n",
112 else /* white space */
113 optarg
= nargv
[optind
];
117 return(optopt
); /* dump back option letter */