1 /* Copyright (C) 1998, 1999, 2000, 2005 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Andreas Jaeger <aj@suse.de>, 1998.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19 #include <time.h>
20 #include <stdio.h>
21 #include <stdlib.h>
22 #include <string.h>
23 #include <unistd.h>
24
25 int failed = 0;
26
27 struct test_times
28 {
29 const char *name;
30 int daylight;
31 int timezone;
32 const char *tzname[2];
33 };
34
35 static const struct test_times tests[] =
36 {
37 { "Europe/Amsterdam", 1, -3600, { "CET", "CEST" }},
38 { "Europe/Berlin", 1, -3600, { "CET", "CEST" }},
39 { "Europe/London", 1, 0, { "GMT", "BST" }},
40 { "Universal", 0, 0, {"UTC", "UTC" }},
41 { "Australia/Melbourne", 1, -36000, { "EST", "EST" }},
42 { "America/Sao_Paulo", 1, 10800, {"BRT", "BRST" }},
43 { "America/Chicago", 1, 21600, {"CST", "CDT" }},
44 { "America/Indiana/Indianapolis", 1, 18000, {"EST", "EDT" }},
45 { "America/Los_Angeles", 1, 28800, {"PST", "PDT" }},
46 { "Asia/Tokyo", 1, -32400, {"JST", "JDT" }},
47 { "Pacific/Auckland", 1, -43200, { "NZST", "NZDT" }},
48 { NULL, 0, 0 }
49 };
50
51 /* This string will be used for `putenv' calls. */
52 char envstring[100];
53
54 static void
print_tzvars(void)55 print_tzvars (void)
56 {
57 printf ("tzname[0]: %s\n", tzname[0]);
58 printf ("tzname[1]: %s\n", tzname[1]);
59 printf ("daylight: %d\n", daylight);
60 printf ("timezone: %ld\n", timezone);
61 }
62
63
64 static void
check_tzvars(const char * name,int dayl,int timez,const char * const tznam[])65 check_tzvars (const char *name, int dayl, int timez, const char *const tznam[])
66 {
67 int i;
68
69 if (daylight != dayl)
70 {
71 printf ("*** Timezone: %s, daylight is: %d but should be: %d\n",
72 name, daylight, dayl);
73 ++failed;
74 }
75 if (timezone != timez)
76 {
77 printf ("*** Timezone: %s, timezone is: %ld but should be: %d\n",
78 name, timezone, timez);
79 ++failed;
80 }
81 for (i = 0; i <= 1; ++i)
82 if (strcmp (tzname[i], tznam[i]) != 0)
83 {
84 printf ("*** Timezone: %s, tzname[%d] is: %s but should be: %s\n",
85 name, i, tzname[i], tznam[i]);
86 ++failed;
87 }
88 }
89
90
91 int
main(int argc,char ** argv)92 main (int argc, char ** argv)
93 {
94 time_t t;
95 const struct test_times *pt;
96 char buf[BUFSIZ];
97
98 /* This should be: Fri May 15 01:02:16 1998 (UTC). */
99 t = 895194136;
100 printf ("We use this date: %s\n", asctime (gmtime (&t)));
101
102 for (pt = tests; pt->name != NULL; ++pt)
103 {
104 /* Start with a known state */
105 printf ("Checking timezone %s\n", pt->name);
106 sprintf (buf, "TZ=%s", pt->name);
107 if (putenv (buf))
108 {
109 puts ("putenv failed.");
110 failed = 1;
111 }
112 tzset ();
113 print_tzvars ();
114 check_tzvars (pt->name, pt->daylight, pt->timezone, pt->tzname);
115
116 /* calling localtime shouldn't make a difference */
117 localtime (&t);
118 print_tzvars ();
119 check_tzvars (pt->name, pt->daylight, pt->timezone, pt->tzname);
120 }
121
122 /* From a post of Scott Harrington <seh4@ix.netcom.com> to the timezone
123 mailing list. */
124 {
125 struct tm tmBuf = {0, 0, 0, 10, 3, 98, 0, 0, -1};
126 char buf[200];
127 strcpy (envstring, "TZ=Europe/London");
128 putenv (envstring);
129 t = mktime (&tmBuf);
130 snprintf (buf, sizeof (buf), "TZ=%s %ld %d %d %d %d %d %d %d %d %d",
131 getenv ("TZ"), t,
132 tmBuf.tm_sec, tmBuf.tm_min, tmBuf.tm_hour,
133 tmBuf.tm_mday, tmBuf.tm_mon, tmBuf.tm_year,
134 tmBuf.tm_wday, tmBuf.tm_yday, tmBuf.tm_isdst);
135 fputs (buf, stdout);
136 puts (" should be");
137 puts ("TZ=Europe/London 892162800 0 0 0 10 3 98 5 99 1");
138 if (strcmp (buf, "TZ=Europe/London 892162800 0 0 0 10 3 98 5 99 1") != 0)
139 {
140 failed = 1;
141 fputs (" FAILED ***", stdout);
142 }
143 }
144
145 printf("\n");
146
147 {
148 struct tm tmBuf = {0, 0, 0, 10, 3, 98, 0, 0, -1};
149 char buf[200];
150 strcpy (envstring, "TZ=GMT");
151 /* No putenv call needed! */
152 t = mktime (&tmBuf);
153 snprintf (buf, sizeof (buf), "TZ=%s %ld %d %d %d %d %d %d %d %d %d",
154 getenv ("TZ"), t,
155 tmBuf.tm_sec, tmBuf.tm_min, tmBuf.tm_hour,
156 tmBuf.tm_mday, tmBuf.tm_mon, tmBuf.tm_year,
157 tmBuf.tm_wday, tmBuf.tm_yday, tmBuf.tm_isdst);
158 fputs (buf, stdout);
159 puts (" should be");
160 puts ("TZ=GMT 892166400 0 0 0 10 3 98 5 99 0");
161 if (strcmp (buf, "TZ=GMT 892166400 0 0 0 10 3 98 5 99 0") != 0)
162 {
163 failed = 1;
164 fputs (" FAILED ***", stdout);
165 }
166 }
167
168 return failed ? EXIT_FAILURE : EXIT_SUCCESS;
169 }
170