1 /*
2 * Copyright (c) 2000, Boris Popov
3 * 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 Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $Id: cfopt.c,v 1.1.1.1 2001/06/09 00:28:12 zarzycki Exp $
33 */
34
35 #include <sys/types.h>
36
37 #include <stdio.h>
38 #include <string.h>
39 #include <synch.h>
40 #include <libintl.h>
41
42 #include <cflib.h>
43 #include <netsmb/smb_lib.h>
44 #include <assert.h>
45
46 /* lock for the variables below */
47 mutex_t cf_opt_mutex = DEFAULTMUTEX;
48
49 int cf_opterr = 1, /* if error message should be printed */
50 cf_optind = 1, /* index into parent argv vector */
51 cf_optopt, /* character checked for validity */
52 cf_optreset; /* reset getopt */
53 const char *cf_optarg; /* argument associated with option */
54
55 #define BADCH (int)'?'
56 #define BADARG (int)':'
57 #define EMSG ""
58
59 void
cf_opt_lock(void)60 cf_opt_lock(void)
61 {
62 mutex_lock(&cf_opt_mutex);
63 }
64
65 void
cf_opt_unlock(void)66 cf_opt_unlock(void)
67 {
68 mutex_unlock(&cf_opt_mutex);
69 }
70
71 int
cf_getopt(nargc,nargv,ostr)72 cf_getopt(nargc, nargv, ostr)
73 int nargc;
74 char * const *nargv;
75 const char *ostr;
76 {
77 static const char *place = EMSG; /* option letter processing */
78 char *oli; /* option letter list index */
79 int tmpind;
80
81 assert(MUTEX_HELD(&cf_opt_mutex));
82
83 if (cf_optreset || !*place) { /* update scanning pointer */
84 cf_optreset = 0;
85 tmpind = cf_optind;
86 for (;;) {
87 if (tmpind >= nargc) {
88 place = EMSG;
89 return (-1);
90 }
91 if (*(place = nargv[tmpind]) != '-') {
92 tmpind++;
93 continue; /* lookup next option */
94 }
95 if (place[1] && *++place == '-') { /* found "--" */
96 cf_optind = ++tmpind;
97 place = EMSG;
98 return (-1);
99 }
100 cf_optind = tmpind;
101 break;
102 }
103 } /* option letter okay? */
104 if ((cf_optopt = (int)*place++) == (int)':' ||
105 !(oli = strchr(ostr, cf_optopt))) {
106 /*
107 * if the user didn't specify '-' as an option,
108 * assume it means -1.
109 */
110 if (cf_optopt == (int)'-')
111 return (-1);
112 if (!*place)
113 ++cf_optind;
114 if (cf_opterr && *ostr != ':')
115 (void) fprintf(stderr, dgettext(TEXT_DOMAIN,
116 "%s: illegal option -- %c\n"),
117 __progname, cf_optopt);
118 return (BADCH);
119 }
120 if (*++oli != ':') { /* don't need argument */
121 cf_optarg = NULL;
122 if (!*place)
123 ++cf_optind;
124 } else { /* need an argument */
125 if (*place) /* no white space */
126 cf_optarg = place;
127 else if (nargc <= ++cf_optind) { /* no arg */
128 place = EMSG;
129 if (*ostr == ':')
130 return (BADARG);
131 if (cf_opterr)
132 (void) fprintf(stderr, dgettext(TEXT_DOMAIN,
133 "%s: option requires an argument -- %c\n"),
134 __progname, cf_optopt);
135 return (BADCH);
136 } else /* white space */
137 cf_optarg = nargv[cf_optind];
138 place = EMSG;
139 ++cf_optind;
140 }
141 return (cf_optopt); /* dump back option letter */
142 }
143