2 * Copyright (c) 1987, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
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
34 /* last review : october 29th, 2002 */
36 #if defined(LIBC_SCCS) && !defined(lint)
37 static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";
38 #endif /* LIBC_SCCS and not lint */
44 int opterr = 1, /* if error message should be printed */
45 optind = 1, /* index into parent argv vector */
46 optopt, /* character checked for validity */
47 optreset; /* reset getopt */
48 const char *optarg; /* argument associated with option */
58 #define BADCH (int)'?'
59 #define BADARG (int)':'
64 static void getopterror(int which) {
65 static char error1[]="Unknown option `-x'.\n";
66 static char error2[]="Missing argument for `-x'.\n";
70 fprintf(stderr,"%s\n",error2);
74 fprintf(stderr,"%s\n",error1);
82 * Parse argc/argv argument vector.
84 int getopt(int nargc, char *const *nargv, const char *ostr) {
85 # define __progname nargv[0]
86 static const char *place = EMSG; /* option letter processing */
87 char *oli; /* option letter list index */
89 if (optreset || !*place) { /* update scanning pointer */
91 if (optind >= nargc || *(place = nargv[optind]) != '-') {
95 if (place[1] && *++place == '-') { /* found "--" */
100 } /* option letter okay? */
101 if ((optopt = (int) *place++) == (int) ':' ||
102 !(oli = strchr(ostr, optopt))) {
104 * if the user didn't specify '-' as an option,
105 * assume it means -1.
107 if (optopt == (int) '-')
111 if (opterr && *ostr != ':')
112 (void) fprintf(stderr,
113 "%s: illegal option -- %c\n", __progname, optopt);
116 if (*++oli != ':') { /* don't need argument */
120 } else { /* need an argument */
121 if (*place) /* no white space */
123 else if (nargc <= ++optind) { /* no arg */
128 (void) fprintf(stderr,
129 "%s: option requires an argument -- %c\n",
132 } else /* white space */
133 optarg = nargv[optind];
137 return (optopt); /* dump back option letter */
141 int getopt_long(int argc, char * const argv[], const char *optstring,
142 struct option *longopts, int *longindex, int totlen) {
143 static int lastidx,lastofs;
147 if (optind>argc || !argv[optind] || *argv[optind]!='-' || argv[optind][1]==0)
150 if (argv[optind][0]=='-' && argv[optind][1]==0) {
155 if (argv[optind][0]=='-') { /* long option */
156 char* arg=argv[optind]+1;
157 char* max=strchr(arg,'=');
158 const struct option* o;
159 if (!max) max=arg+strlen(arg);
161 len=sizeof(longopts[0]);
163 for (i=0;i<totlen;i=i+len,o++) {
164 if (!strncmp(o->name,arg,(size_t)(max-arg))) { /* match */
165 if (longindex) *longindex=o-longopts;
170 optarg=argv[optind+1];
172 if (strchr(optarg,'-')){ /* No argument */
173 if (*optstring==':') return ':';
175 (void) fprintf(stderr,"%s: option requires an argument %c\n",arg, optopt);
180 if (!optarg && o->has_arg==1) { /* no argument there */
181 if (*optstring==':') return ':';
183 (void) fprintf(stderr,"%s: option requires an argument %c\n",arg, optopt);
199 if (*optstring==':') return ':';
201 if (lastidx!=optind) {
202 lastidx=optind; lastofs=0;
204 optopt=argv[optind][lastofs+1];
206 if ((tmp=strchr(optstring,optopt))) {
207 if (*tmp==0) { /* apparently, we looked for \0, i.e. end of argument */
212 if (tmp[1]==':') { /* argument expected */
213 if (tmp[2]==':' || argv[optind][lastofs+2]) { /* "-foo", return "oo" as optarg */
214 if (!*(optarg=argv[optind]+lastofs+2)) optarg=0;
218 optarg=argv[optind+1];
219 if (!optarg) { /* missing argument */
221 if (*optstring==':') return ':';
235 else { /* not found */
241 fprintf(stderr,"Invalid option %s\n",arg);
244 }// end of long option