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 #if defined(LIBC_SCCS) && !defined(lint)
35 /* static char sccsid[] = "from: @(#)getopt.c 8.2 (Berkeley) 4/2/94"; */
36 static char *rcsid = "$Id: getopt.c,v 1.2 2001/08/02 16:41:59 rees Exp $";
37 #endif /* LIBC_SCCS and not lint */
38
39 #ifdef __palmos__
40 #include <Common.h>
41 #include <System/SysAll.h>
42 #include <System/Unix/unix_stdlib.h>
43 #include <System/Unix/unix_string.h>
44 #include <UI/UIAll.h>
45 #include "field.h"
46 #else
47 #include <stdio.h>
48 #include <stdlib.h>
49 #include <string.h>
50 #endif
51
52 int opterr = 1, /* if error message should be printed */
53 optind = 1, /* index into parent argv vector */
54 optopt, /* character checked for validity */
55 optreset; /* reset getopt */
56 char *optarg; /* argument associated with option */
57
58 #define BADCH (int)'?'
59 #define BADARG (int)':'
60 #define EMSG ""
61
62 /*
63 * getopt --
64 * Parse argc/argv argument vector.
65 */
66 int
getopt(nargc,nargv,ostr)67 getopt(nargc, nargv, ostr)
68 int nargc;
69 char * const *nargv;
70 const char *ostr;
71 {
72 extern char *__progname;
73 static char *place = EMSG; /* option letter processing */
74 char *oli; /* option letter list index */
75
76 if (optreset || !*place) { /* update scanning pointer */
77 optreset = 0;
78 if (optind >= nargc || *(place = nargv[optind]) != '-') {
79 place = EMSG;
80 return (-1);
81 }
82 if (place[1] && *++place == '-') { /* found "--" */
83 ++optind;
84 place = EMSG;
85 return (-1);
86 }
87 } /* option letter okay? */
88 if ((optopt = (int)*place++) == (int)':' ||
89 !(oli = strchr(ostr, optopt))) {
90 /*
91 * if the user didn't specify '-' as an option,
92 * assume it means -1.
93 */
94 if (optopt == (int)'-')
95 return (-1);
96 if (!*place)
97 ++optind;
98 if (opterr && *ostr != ':')
99 #ifdef __palmos__
100 palmprintf("%s: illegal option -- %c\n", __progname, optopt);
101 #else
102 (void)fprintf(stderr,
103 "%s: illegal option -- %c\n", __progname, optopt);
104 #endif
105 return (BADCH);
106 }
107 if (*++oli != ':') { /* don't need argument */
108 optarg = NULL;
109 if (!*place)
110 ++optind;
111 }
112 else { /* need an argument */
113 if (*place) /* no white space */
114 optarg = place;
115 else if (nargc <= ++optind) { /* no arg */
116 place = EMSG;
117 if (*ostr == ':')
118 return (BADARG);
119 if (opterr)
120 #ifdef __palmos__
121 palmprintf("%s: option requires an argument -- %c\n", __progname, optopt);
122 #else
123 (void)fprintf(stderr,
124 "%s: option requires an argument -- %c\n",
125 __progname, optopt);
126 #endif
127 return (BADCH);
128 }
129 else /* white space */
130 optarg = nargv[optind];
131 place = EMSG;
132 ++optind;
133 }
134 return (optopt); /* dump back option letter */
135 }
136