/* Copyright (C) 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <time.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> int failed = 0; struct test_times { const char *name; int daylight; int timezone; const char *tzname[2]; }; static const struct test_times tests[] = { { "Europe/Amsterdam", 1, -3600, { "CET", "CEST" }}, { "Europe/Berlin", 1, -3600, { "CET", "CEST" }}, { "Europe/London", 1, 0, { "GMT", "BST" }}, { "Universal", 0, 0, {"UTC", "UTC" }}, { "Australia/Melbourne", 1, -36000, { "EST", "EST" }}, { "America/Sao_Paulo", 1, 10800, {"BRT", "BRST" }}, { "America/Chicago", 1, 21600, {"CST", "CDT" }}, { "America/Indianapolis", 1, 18000, {"EST", "EDT" }}, { "America/Los_Angeles", 1, 28800, {"PST", "PDT" }}, { "Asia/Tokyo", 0, -32400, {"JST", "JST" }}, { "Pacific/Auckland", 1, -43200, { "NZST", "NZDT" }}, { NULL, 0, 0 } }; /* This string will be used for `putenv' calls. */ char envstring[100]; void print_tzvars (void) { printf ("tzname[0]: %s\n", tzname[0]); printf ("tzname[1]: %s\n", tzname[1]); printf ("daylight: %d\n", daylight); printf ("timezone: %ld\n", timezone); } void check_tzvars (const char *name, int dayl, int timez, const char *const tznam[]) { int i; if (daylight != dayl) { printf ("*** Timezone: %s, daylight is: %d but should be: %d\n", name, daylight, dayl); ++failed; } if (timezone != timez) { printf ("*** Timezone: %s, timezone is: %ld but should be: %d\n", name, timezone, timez); ++failed; } for (i = 0; i <= 1; ++i) if (strcmp (tzname[i], tznam[i]) != 0) { printf ("*** Timezone: %s, tzname[%d] is: %s but should be: %s\n", name, i, tzname[i], tznam[i]); ++failed; } } int main (int argc, char ** argv) { time_t t; const struct test_times *pt; char buf[BUFSIZ]; /* This should be: Fri May 15 01:02:16 1998 (UTC). */ t = 895194136; printf ("We use this date: %s\n", asctime (gmtime (&t))); for (pt = tests; pt->name != NULL; ++pt) { /* Start with a known state */ printf ("Checking timezone %s\n", pt->name); sprintf (buf, "TZ=%s", pt->name); if (putenv (buf)) { puts ("putenv failed."); failed = 1; } tzset (); print_tzvars (); check_tzvars (pt->name, pt->daylight, pt->timezone, pt->tzname); /* calling localtime shouldn't make a difference */ localtime (&t); print_tzvars (); check_tzvars (pt->name, pt->daylight, pt->timezone, pt->tzname); } /* From a post of Scott Harrington <seh4@ix.netcom.com> to the timezone mailing list. */ { struct tm tmBuf = {0, 0, 0, 10, 3, 98, 0, 0, -1}; char buf[200]; strcpy (envstring, "TZ=Europe/London"); putenv (envstring); t = mktime (&tmBuf); snprintf (buf, sizeof (buf), "TZ=%s %ld %d %d %d %d %d %d %d %d %d", getenv ("TZ"), t, tmBuf.tm_sec, tmBuf.tm_min, tmBuf.tm_hour, tmBuf.tm_mday, tmBuf.tm_mon, tmBuf.tm_year, tmBuf.tm_wday, tmBuf.tm_yday, tmBuf.tm_isdst); fputs (buf, stdout); puts (" should be"); puts ("TZ=Europe/London 892162800 0 0 0 10 3 98 5 99 1"); if (strcmp (buf, "TZ=Europe/London 892162800 0 0 0 10 3 98 5 99 1") != 0) { failed = 1; fputs (" FAILED ***", stdout); } } printf("\n"); { struct tm tmBuf = {0, 0, 0, 10, 3, 98, 0, 0, -1}; char buf[200]; strcpy (envstring, "TZ=GMT"); /* No putenv call needed! */ t = mktime (&tmBuf); snprintf (buf, sizeof (buf), "TZ=%s %ld %d %d %d %d %d %d %d %d %d", getenv ("TZ"), t, tmBuf.tm_sec, tmBuf.tm_min, tmBuf.tm_hour, tmBuf.tm_mday, tmBuf.tm_mon, tmBuf.tm_year, tmBuf.tm_wday, tmBuf.tm_yday, tmBuf.tm_isdst); fputs (buf, stdout); puts (" should be"); puts ("TZ=GMT 892166400 0 0 0 10 3 98 5 99 0"); if (strcmp (buf, "TZ=GMT 892166400 0 0 0 10 3 98 5 99 0") != 0) { failed = 1; fputs (" FAILED ***", stdout); } } return failed ? EXIT_FAILURE : EXIT_SUCCESS; }