1 /* args.c - Parse command-line arguments for grrobot using argp
3 * Copyright © 2003 Carl Worth
5 * Permission to use, copy, modify, distribute, and sell this software
6 * and its documentation for any purpose is hereby granted without
7 * fee, provided that the above copyright notice appear in all copies
8 * and that both that copyright notice and this permission notice
9 * appear in supporting documentation, and that the name of Carl Worth
10 * not be used in advertising or publicity pertaining to distribution
11 * of the software without specific, written prior permission.
12 * Carl Worth makes no representations about the suitability of this
13 * software for any purpose. It is provided "as is" without express
14 * or implied warranty.
16 * CARL WORTH DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
18 * NO EVENT SHALL CARL WORTH BE LIABLE FOR ANY SPECIAL, INDIRECT OR
19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
20 * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
21 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
22 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
24 * Author: Carl Worth <carl@theworths.org>
32 const char *argp_program_version = "grrobot " VERSION;
34 const char *argp_program_bug_address = "<carl@theworths.org>";
36 static char doc[] = "rrsolve - Ricochet Robot solver";
38 static char args_doc[] = "[file ...]";
40 static struct argp_option options[] = {
41 /* name, key, arg, flags, doc */
42 {"host", 'h', "HOST", 0, "Host running RR server"},
43 {"port", 'p', "PORT", 0, "Port of server"},
44 {"user", 'u', "USERNAME", 0, "Username for conection"},
45 {"game", 'g', "GAME", 0, "Game to join"},
50 parse_opt (int key, char *arg, struct argp_state *state)
52 struct args *args = state->input;
69 /* Consume all remaining non-option arguments */
70 args->files = &state->argv[state->next - 1];
71 state->next = state->argc;
75 return ARGP_ERR_UNKNOWN;
81 static struct argp argp = { options, parse_opt, args_doc, doc };
84 args_parse(args_t *args, int argc, char *argv[])
86 args->host = getenv ("RR_HOST");
87 if (args->host == NULL)
88 args->host = ARGS_HOST_DEFAULT;
89 args->port = getenv ("RR_PORT");
90 if (args->port == NULL)
91 args->port = ARGS_PORT_DEFAULT;
92 args->user = ARGS_USER_DEFAULT;
93 args->game = getenv ("RR_GAME");
94 if (args->game == NULL)
95 args->game = ARGS_GAME_DEFAULT;
98 return argp_parse (&argp, argc, argv,