diff options
| -rw-r--r-- | sleep.c | 63 |
1 files changed, 39 insertions, 24 deletions
@@ -1,41 +1,56 @@ /* * UNG's Not GNU - * - * Copyright (c) 2011, Jakob Kaivo <jakob@kaivo.net> - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * + * Copyright (c) 2011-2019, Jakob Kaivo <jkk@ung.org> + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. */ +#define _POSIX_C_SOURCE 2 +#include <locale.h> +#include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> -const char *sleep_desc = "suspend execution for an interval"; -const char *sleep_inv = "sleep time"; - -int -main (int argc, char **argv) +int main (int argc, char *argv[]) { - char *end; - long seconds; + setlocale(LC_ALL, ""); + + while (getopt(argc, argv, "") != -1) { + return 1; + } + + if (optind >= argc) { + fprintf(stderr, "sleep: missing operand\n"); + return 1; + } - if (argc != 2) { + if (argv[optind][0] == '-') { + fprintf(stderr, "sleep: interval must be positive\n"); return 1; } - seconds = strtol(argv[1], &end, 10); - if (end != NULL && strlen(end) > 0) { + char *end = NULL; + unsigned long int seconds = strtoul(argv[optind], &end, 10); + if (*end != '\0') { + fprintf(stderr, "sleep: invalid time %s\n", argv[optind]); return 1; } |