1 /*
2 * Copyright (c) 2002 Todd C. Miller <millert@openbsd.org>
3 *
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 *
16 * Sponsored in part by the Defense Advanced Research Projects
17 * Agency (DARPA) and Air Force Research Laboratory, Air Force
18 * Materiel Command, USAF, under agreement number F39502-99-1-0512.
19 */
20
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <getopt.h>
24
25 /*
26 * Simple getopt_long() and getopt_long_only() excerciser.
27 * ENVIRONMENT:
28 * LONG_ONLY : use getopt_long_only() (default is getopt_long())
29 * POSIXLY_CORRECT : don't permute args
30 */
31
32 int
main(int argc,char ** argv)33 main(int argc, char **argv)
34 {
35 int ch, idx, goggles;
36 int (*gl)(int, char * const *, const char *, const struct option *, int *);
37 struct option longopts[] = {
38 { "force", no_argument, 0, 0 },
39 { "fast", no_argument, 0, '1' },
40 { "best", no_argument, 0, '9' },
41 { "input", required_argument, 0, 'i' },
42 { "illiterate", no_argument, 0, 0 },
43 { "drinking", required_argument, &goggles, 42 },
44 { "help", no_argument, 0, 'h' },
45 { 0, 0, 0, 0 },
46 };
47
48 if (getenv("LONG_ONLY")) {
49 gl = getopt_long_only;
50 printf("getopt_long_only");
51 } else {
52 gl = getopt_long;
53 printf("getopt_long");
54 }
55 if (getenv("POSIXLY_CORRECT"))
56 printf(" (POSIXLY_CORRECT)");
57 printf(": ");
58 for (idx = 1; idx < argc; idx++)
59 printf("%s ", argv[idx]);
60 printf("\n");
61
62 goggles = 0;
63 for (;;) {
64 idx = -1;
65 ch = gl(argc, argv, "19bf:i:hW;-", longopts, &idx);
66 if (ch == -1)
67 break;
68 switch (ch) {
69 case 0:
70 case '1':
71 case '9':
72 case 'h':
73 case 'b':
74 case '-':
75 if (idx != -1) {
76 if (goggles == 42)
77 printf("option %s, arg %s\n",
78 longopts[idx].name, optarg);
79 else
80 printf("option %s\n",
81 longopts[idx].name);
82 } else
83 printf("option %c\n", ch);
84 break;
85 case 'f':
86 case 'i':
87 if (idx != -1)
88 printf("option %s, arg %s\n",
89 longopts[idx].name, optarg);
90 else
91 printf("option %c, arg %s\n", ch, optarg);
92 break;
93
94 case '?':
95 break;
96
97 default:
98 printf("unexpected return value: %c\n", ch);
99 break;
100 }
101 }
102 argc -= optind;
103 argv += optind;
104
105 if (argc > 0) {
106 printf("remaining ARGV: ");
107 while (argc--)
108 printf("%s ", *argv++);
109 printf("\n");
110 }
111 printf("\n");
112
113 exit (0);
114 }
115