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main: add -h,--help and -v,--version command line options

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Daniel Eklöf 2019-08-11 16:03:29 +02:00
parent a78765a36f
commit 1060c8e892
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GPG key ID: 5BBD4992C116573F
2 changed files with 49 additions and 7 deletions
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31
main.c
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@ -192,6 +192,18 @@ static const struct wl_registry_listener registry_listener = {
.global_remove = &handle_global_remove,
};
static void
print_usage(const char *prog_name)
{
printf("Usage: %s [OPTION]...\n", prog_name);
printf("\n");
printf("Options:\n");
printf(" -f,--font=FONT font name and style in fontconfig format (monospace)\n"
" -t,--term=TERM value to set the environment variable TERM to (foot)\n"
" -v,--version show the version number and quit\n");
printf("\n");
}
int
main(int argc, char *const *argv)
{
@ -201,14 +213,18 @@ main(int argc, char *const *argv)
if (!config_load(&conf))
return ret;
const char *const prog_name = argv[0];
static const struct option longopts[] = {
{"term", required_argument, 0, 't'},
{"font", required_argument, 0, 'f'},
{NULL, no_argument, 0, 0},
{"term", required_argument, 0, 't'},
{"font", required_argument, 0, 'f'},
{"version", no_argument, 0, 'v'},
{"help", no_argument, 0, 'h'},
{NULL, no_argument, 0, 0},
};
while (true) {
int c = getopt_long(argc, argv, ":t:f:h", longopts, NULL);
int c = getopt_long(argc, argv, ":t:f:vh", longopts, NULL);
if (c == -1)
break;
@ -223,8 +239,13 @@ main(int argc, char *const *argv)
tll_push_back(conf.fonts, strdup(optarg));
break;
case 'v':
printf("foot version %s\n", FOOT_VERSION);
return EXIT_SUCCESS;
case 'h':
break;
print_usage(prog_name);
return EXIT_SUCCESS;
case ':':
fprintf(stderr, "error: -%c: missing required argument\n", optopt);