1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
======================================================================
(C) COPYRIGHT 2008, Eric Busboom <eric@civicknowledge.com>
This library is free software; you can redistribute it and/or modify
it under the terms of either:
The LGPL as published by the Free Software Foundation, version
2.1, available at: https://www.gnu.org/licenses/lgpl-2.1.html
Or:
The Mozilla Public License Version 2.0. You may obtain a copy of
the License at https://www.mozilla.org/MPL/
======================================================================*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "libical/ical.h"
#include <stdlib.h>
#define MAX_FAILURE_RATE 1
int main()
{
icalarray *timezones;
icaltimezone *zone, *utc_zone;
const char *zone_location;
size_t i;
int ret = 0;
unsigned int total_failed = 0;
unsigned int total_okay = 0;
unsigned int percent_failed = 0;
int verbose = 0;
int day;
icaltime_t start_time;
struct tm start_tm;
icaltime_t curr_time;
struct tm curr_tm;
struct icaltimetype curr_tt;
int failed = 0;
int curr_failed;
int zonedef_printed = 0;
#if !defined(HAVE_SETENV)
static char new_tz[256];
#endif
set_zone_directory("../../zoneinfo");
icaltimezone_set_tzid_prefix("/softwarestudio.org/");
timezones = icaltimezone_get_builtin_timezones();
utc_zone = icaltimezone_get_utc_timezone();
/* for all known time zones... */
for (i = 0; i < timezones->num_elements; i++) {
zone = (icaltimezone *)icalarray_element_at(timezones, i);
zone_location = icaltimezone_get_location(zone);
zonedef_printed = 0;
if (!zone_location)
continue;
/*
* select this location for glibc: needs support for TZ=<location>
* which is not POSIX
*/
#if defined(HAVE_SETENV)
setenv("TZ", zone_location, 1);
#else
new_tz[0] = '\0';
strncat(new_tz, "TZ=", 255);
strncat(new_tz, zone_location, 255 - strlen(new_tz));
putenv(new_tz);
#endif
tzset();
/*
* determine current local time and date: always use midday in
* the current zone and first day of first month in the year
*/
start_time = icaltime(NULL);
(void)localtime_r(&start_time, &start_tm);
start_tm.tm_hour = 12;
start_tm.tm_min = 0;
start_tm.tm_sec = 0;
start_tm.tm_mday = 1;
start_tm.tm_mon = 0;
start_time = mktime(&start_tm);
/* check time conversion for the next 365 days */
for (day = 0, curr_time = start_time; day < 365; day++, curr_time += 24 * 60 * 60) {
/* determine date/time with glibc */
localtime_r(&curr_time, &curr_tm);
/* determine date/time with libical */
curr_tt = icaltime_from_timet_with_zone(curr_time, 0, utc_zone);
curr_tt.zone = utc_zone; /* workaround: icaltime_from_timet_with_zone()
should do this, but doesn't! */
curr_tt = icaltime_convert_to_zone(curr_tt, zone);
/* compare... */
curr_failed =
curr_tm.tm_year + 1900 != curr_tt.year ||
curr_tm.tm_mon + 1 != curr_tt.month ||
curr_tm.tm_mday != curr_tt.day ||
curr_tm.tm_hour != curr_tt.hour ||
curr_tm.tm_min != curr_tt.minute ||
curr_tm.tm_sec != curr_tt.second;
/* only print first failed day and first day which is okay again */
if (verbose || curr_failed != failed) {
struct tm utc_tm;
if (!icalgmtime_r(&curr_time, &utc_tm))
memset(&utc_tm, 0, sizeof(utc_tm));
printf(
"%s: day %03d: %s: %04d-%02d-%02d %02d:%02d:%02d UTC = "
"libc %04d-%02d-%02d %02d:%02d:%02d dst %d",
icaltimezone_get_location(zone), day,
verbose ? (curr_failed ? "failed" : "okay") : (curr_failed ? "first failed" :
"okay again"),
utc_tm.tm_year + 1900, utc_tm.tm_mon + 1, utc_tm.tm_mday, utc_tm.tm_hour,
utc_tm.tm_min, utc_tm.tm_sec, curr_tm.tm_year + 1900, curr_tm.tm_mon + 1,
curr_tm.tm_mday, curr_tm.tm_hour, curr_tm.tm_min, curr_tm.tm_sec,
curr_tm.tm_isdst);
if (curr_failed) {
printf(" != libical %04d-%02d-%02d %02d:%02d:%02d dst %d",
curr_tt.year,
curr_tt.month,
curr_tt.day,
curr_tt.hour,
curr_tt.minute,
curr_tt.second,
curr_tt.is_daylight);
ret = 1;
}
printf("\n");
failed = curr_failed;
if (failed && !zonedef_printed) {
icalcomponent *comp = icaltimezone_get_component(zone);
if (comp) {
printf("%s\n", icalcomponent_as_ical_string(comp));
}
zonedef_printed = 1;
}
}
if (curr_failed) {
total_failed++;
} else {
total_okay++;
}
}
}
if (total_failed || total_okay) {
percent_failed = total_failed * 100 / (total_failed + total_okay);
printf(" *** Summary: %lu zones tested, %u days failed, %u okay => %u%% failed ***\n",
(unsigned long)timezones->num_elements, total_failed, total_okay, percent_failed);
}
if (percent_failed <= MAX_FAILURE_RATE && total_failed) {
ret = 0;
printf(" *** Expect some small error rate with inter-operable vtimezones *** \n");
}
icaltimezone_free_builtin_timezones();
return ret;
}
|
