Import bmake-20121010 to new vendor branch
[dragonfly.git] / contrib / bmake / getopt.c
CommitLineData
01e196c8
JM
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