1/*
2 * Copyright (c) 1987, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
20 *
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
31 * SUCH DAMAGE.
32 */
33
34#ifdef HAVE_CONFIG_H
35# include "config.h"
36#endif
37#if !defined(HAVE_GETOPT) || defined(WANT_GETOPT_LONG) || defined(BROKEN_GETOPT)
38
39#if defined(LIBC_SCCS) && !defined(lint)
40/* static char sccsid[] = "from: @(#)getopt.c	8.2 (Berkeley) 4/2/94"; */
41static char *rcsid = "$Id: getopt.c,v 1.3 1999/01/08 02:14:18 sjg Exp $";
42#endif /* LIBC_SCCS and not lint */
43
44#include <stdio.h>
45#include <stdlib.h>
46#include <string.h>
47
48
49#define	BADCH	(int)'?'
50#define	BADARG	(int)':'
51#define	EMSG	""
52
53int	opterr = 1,		/* if error message should be printed */
54	optind = 1,		/* index into parent argv vector */
55	optopt = BADCH,		/* character checked for validity */
56	optreset;		/* reset getopt */
57char	*optarg;		/* argument associated with option */
58
59/*
60 * getopt --
61 *	Parse argc/argv argument vector.
62 */
63int
64getopt(nargc, nargv, ostr)
65	int nargc;
66	char * const *nargv;
67	const char *ostr;
68{
69	extern char *__progname;
70	static char *place = EMSG;		/* option letter processing */
71	char *oli;				/* option letter list index */
72
73#ifndef BSD4_4
74	if (!__progname) {
75		if (__progname = strrchr(nargv[0], '/'))
76			++__progname;
77		else
78			__progname = nargv[0];
79	}
80#endif
81
82	if (optreset || !*place) {		/* update scanning pointer */
83		optreset = 0;
84		if (optind >= nargc || *(place = nargv[optind]) != '-') {
85			place = EMSG;
86			return (-1);
87		}
88		if (place[1] && *++place == '-'	/* found "--" */
89		    && !place[1]) {		/* and not "--foo" */
90			++optind;
91			place = EMSG;
92			return (-1);
93		}
94	}					/* option letter okay? */
95	if ((optopt = (int)*place++) == (int)':' ||
96	    !(oli = strchr(ostr, optopt))) {
97		/*
98		 * if the user didn't specify '-' as an option,
99		 * assume it means -1.
100		 */
101		if (optopt == (int)'-')
102			return (-1);
103		if (!*place)
104			++optind;
105		if (opterr && *ostr != ':')
106			(void)fprintf(stderr,
107			    "%s: illegal option -- %c\n", __progname, optopt);
108		return (BADCH);
109	}
110	if (*++oli != ':') {			/* don't need argument */
111		optarg = NULL;
112		if (!*place)
113			++optind;
114	}
115	else {					/* need an argument */
116		if (*place)			/* no white space */
117			optarg = place;
118		else if (nargc <= ++optind) {	/* no arg */
119			place = EMSG;
120			if (*ostr == ':')
121				return (BADARG);
122			if (opterr)
123				(void)fprintf(stderr,
124				    "%s: option requires an argument -- %c\n",
125				    __progname, optopt);
126			return (BADCH);
127		}
128	 	else				/* white space */
129			optarg = nargv[optind];
130		place = EMSG;
131		++optind;
132	}
133	return (optopt);			/* dump back option letter */
134}
135#endif
136#ifdef MAIN
137#ifndef BSD4_4
138char *__progname;
139#endif
140
141int
142main(argc, argv)
143	int argc;
144	char *argv[];
145{
146	int c;
147	char *opts = argv[1];
148
149	--argc;
150	++argv;
151
152	while ((c = getopt(argc, argv, opts)) != EOF) {
153		switch (c) {
154		case '-':
155			if (optarg)
156				printf("--%s ", optarg);
157			break;
158		case '?':
159			exit(1);
160			break;
161		default:
162			if (optarg)
163				printf("-%c %s ", c, optarg);
164			else
165				printf("-%c ", c);
166			break;
167		}
168	}
169
170	if (optind < argc) {
171		printf("-- ");
172		for (; optind < argc; ++optind) {
173			printf("%s ", argv[optind]);
174		}
175	}
176	printf("\n");
177	exit(0);
178}
179#endif
180