| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* Copyright (C) 1991-2015 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. |
| 3 | |
| 4 | The GNU C Library is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU Lesser General Public |
| 6 | License as published by the Free Software Foundation; either |
| 7 | version 2.1 of the License, or (at your option) any later version. |
| 8 | |
| 9 | The GNU C Library is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #include <stdio.h> |
| 19 | #include <stdlib.h> |
| 20 | #include <time.h> |
| 21 | |
| 22 | |
| 23 | int |
| 24 | main (int argc, char **argv) |
| 25 | { |
| 26 | time_t t; |
| 27 | struct tm *tp; |
| 28 | struct tm tbuf; |
| 29 | int lose = 0; |
| 30 | |
| 31 | --argc; |
| 32 | ++argv; |
| 33 | |
| 34 | do |
| 35 | { |
| 36 | char buf[BUFSIZ]; |
| 37 | if (argc > 0) |
| 38 | { |
| 39 | static char buf[BUFSIZ]; |
| 40 | sprintf(buf, "TZ=%s", *argv); |
| 41 | if (putenv(buf)) |
| 42 | { |
| 43 | puts("putenv failed."); |
| 44 | lose = 1; |
| 45 | } |
| 46 | else |
| 47 | puts (buf); |
| 48 | } |
| 49 | tzset(); |
| 50 | tbuf.tm_year = 72; |
| 51 | tbuf.tm_mon = 0; |
| 52 | tbuf.tm_mday = 31; |
| 53 | tbuf.tm_hour = 6; |
| 54 | tbuf.tm_min = 14; |
| 55 | tbuf.tm_sec = 50; |
| 56 | tbuf.tm_isdst = -1; |
| 57 | doit:; |
| 58 | t = mktime(&tbuf); |
| 59 | if (t == (time_t) -1) |
| 60 | { |
| 61 | puts("mktime() failed?"); |
| 62 | lose = 1; |
| 63 | } |
| 64 | tp = localtime(&t); |
| 65 | if (tp == NULL) |
| 66 | { |
| 67 | puts("localtime() failed."); |
| 68 | lose = 1; |
| 69 | } |
| 70 | else if (strftime(buf, sizeof(buf), "%a %b %d %X %Z %Y", tp) == 0) |
| 71 | { |
| 72 | puts("strftime() failed."); |
| 73 | lose = 1; |
| 74 | } |
| 75 | else |
| 76 | puts(buf); |
| 77 | if (tbuf.tm_year == 101) |
| 78 | { |
| 79 | tbuf.tm_year = 97; |
| 80 | tbuf.tm_mon = 0; |
| 81 | goto doit; |
| 82 | } |
| 83 | ++argv; |
| 84 | } while (--argc > 0); |
| 85 | |
| 86 | { |
| 87 | #define SIZE 256 |
| 88 | char buffer[SIZE]; |
| 89 | time_t curtime; |
| 90 | struct tm *loctime; |
| 91 | |
| 92 | curtime = time (NULL); |
| 93 | |
| 94 | loctime = localtime (&curtime); |
| 95 | |
| 96 | fputs (asctime (loctime), stdout); |
| 97 | |
| 98 | strftime (buffer, SIZE, "Today is %A, %B %d.\n", loctime); |
| 99 | fputs (buffer, stdout); |
| 100 | strftime (buffer, SIZE, "The time is %I:%M %p.\n", loctime); |
| 101 | fputs (buffer, stdout); |
| 102 | |
| 103 | loctime->tm_year = 72; |
| 104 | loctime->tm_mon = 8; |
| 105 | loctime->tm_mday = 12; |
| 106 | loctime->tm_hour = 20; |
| 107 | loctime->tm_min = 49; |
| 108 | loctime->tm_sec = 05; |
| 109 | curtime = mktime (loctime); |
| 110 | strftime (buffer, SIZE, "%D %T was %w the %jth.\n", loctime); |
| 111 | fputs (buffer, stdout); |
| 112 | } |
| 113 | |
| 114 | return (lose ? EXIT_FAILURE : EXIT_SUCCESS); |
| 115 | } |