1 #include <limits.h>
2 #include <stdlib.h>
3 #include <string.h>
4 #include <time.h>
5 #include "test.h"
6
7 static char buffer[100];
8
checkStrftime(const char * format,const struct tm * tm,const char * expected)9 static void checkStrftime(const char* format, const struct tm* tm,
10 const char* expected) {
11 size_t resultLength = strftime(buffer, sizeof(buffer), format, tm);
12
13 if (resultLength != 0 && strcmp(buffer, expected) != 0) {
14 t_error("\"%s\": expected \"%s\", got \"%s\"\n", format, expected, buffer);
15 } else if (resultLength == 0 && strlen(expected) != 0) {
16 t_error("\"%s\": expected \"%s\", got nothing\n", format, expected);
17 }
18 }
19
20 static struct tm tm1 = {
21 .tm_sec = 45,
22 .tm_min = 23,
23 .tm_hour = 13,
24 .tm_mday = 3,
25 .tm_mon = 0,
26 .tm_year = 2016 - 1900,
27 .tm_wday = 0,
28 .tm_yday = 2,
29 .tm_isdst = 0
30 };
31
32 static struct tm tm2 = {
33 .tm_sec = 53,
34 .tm_min = 17,
35 .tm_hour = 5,
36 .tm_mday = 5,
37 .tm_mon = 0,
38 .tm_year = 10009 - 1900,
39 .tm_wday = 1,
40 .tm_yday = 4,
41 .tm_isdst = 0
42 };
43
44 static struct tm tm3 = {
45 .tm_sec = 0,
46 .tm_min = 0,
47 .tm_hour = 12,
48 .tm_mday = 23,
49 .tm_mon = 1,
50 .tm_year = 0 - 1900,
51 .tm_wday = 3,
52 .tm_yday = 53,
53 .tm_isdst = 0
54 };
55
56 static struct tm tm4 = {
57 .tm_sec = 0,
58 .tm_min = 0,
59 .tm_hour = 0,
60 .tm_mday = 1,
61 .tm_mon = 0,
62 .tm_year = -123 - 1900,
63 .tm_wday = 1,
64 .tm_yday = 0,
65 .tm_isdst = 0
66 };
67
68 static struct tm tm5 = {
69 .tm_sec = 0,
70 .tm_min = 0,
71 .tm_hour = 0,
72 .tm_mday = 1,
73 .tm_mon = 0,
74 .tm_year = INT_MAX,
75 .tm_wday = 3,
76 .tm_yday = 0,
77 .tm_isdst = 0
78 };
79
main()80 int main() {
81 setenv("TZ", "UTC0", 1);
82
83 checkStrftime("%c", &tm1, "Sun Jan 3 13:23:45 2016");
84 checkStrftime("%c", &tm2, "Mon Jan 5 05:17:53 +10009");
85 checkStrftime("%c", &tm3, "Wed Feb 23 12:00:00 0000");
86
87 // The POSIX.1-2008 standard does not specify the padding character for
88 // "%C". The C standard requires that the number is padded by '0'.
89 // See also http://austingroupbugs.net/view.php?id=1184
90 checkStrftime("%C", &tm1, "20");
91 checkStrftime("%03C", &tm1, "020");
92 checkStrftime("%+3C", &tm1, "+20");
93 checkStrftime("%C", &tm2, "100");
94 checkStrftime("%C", &tm3, "00");
95 checkStrftime("%01C", &tm3, "0");
96
97 checkStrftime("%F", &tm1, "2016-01-03");
98 checkStrftime("%012F", &tm1, "002016-01-03");
99 checkStrftime("%+10F", &tm1, "2016-01-03");
100 checkStrftime("%+11F", &tm1, "+2016-01-03");
101 checkStrftime("%F", &tm2, "+10009-01-05");
102 checkStrftime("%011F", &tm2, "10009-01-05");
103 checkStrftime("%F", &tm3, "0000-02-23");
104 checkStrftime("%01F", &tm3, "0-02-23");
105 checkStrftime("%06F", &tm3, "0-02-23");
106 checkStrftime("%010F", &tm3, "0000-02-23");
107 checkStrftime("%F", &tm4, "-123-01-01");
108 checkStrftime("%011F", &tm4, "-0123-01-01");
109
110 checkStrftime("%g", &tm1, "15");
111 checkStrftime("%g", &tm2, "09");
112
113 checkStrftime("%G", &tm1, "2015");
114 checkStrftime("%+5G", &tm1, "+2015");
115 checkStrftime("%04G", &tm2, "10009");
116
117 checkStrftime("%r", &tm1, "01:23:45 PM");
118 checkStrftime("%r", &tm2, "05:17:53 AM");
119 checkStrftime("%r", &tm3, "12:00:00 PM");
120 checkStrftime("%r", &tm4, "12:00:00 AM");
121
122 // The "%s" specifier was accepted by the Austin Group for the next POSIX.1
123 // revision. See http://austingroupbugs.net/view.php?id=169
124 checkStrftime("%s", &tm1, "1451827425");
125 if (sizeof(time_t) * CHAR_BIT >= 64) {
126 checkStrftime("%s", &tm2, "253686748673");
127 }
128
129 checkStrftime("%T", &tm1, "13:23:45");
130 checkStrftime("%T", &tm2, "05:17:53");
131 checkStrftime("%T", &tm3, "12:00:00");
132 checkStrftime("%T", &tm4, "00:00:00");
133
134 checkStrftime("%U", &tm1, "01");
135 checkStrftime("%U", &tm2, "01");
136 checkStrftime("%U", &tm3, "08");
137
138 checkStrftime("%V", &tm1, "53");
139 checkStrftime("%V", &tm2, "02");
140 checkStrftime("%V", &tm3, "08");
141
142 checkStrftime("%W", &tm1, "00");
143 checkStrftime("%W", &tm2, "01");
144 checkStrftime("%W", &tm3, "08");
145
146 checkStrftime("%x", &tm1, "01/03/16");
147 checkStrftime("%X", &tm1, "13:23:45");
148 checkStrftime("%y", &tm1, "16");
149
150 // There is no standard that explicitly specifies the exact format of "%Y".
151 // The C standard says that "%F" is equivalent to "%Y-%m-%d". The
152 // POSIX.1-2008 standard says that "%F" is equivalent to "%+4Y-%m-%d".
153 // This implies that to conform to both standards "%Y" needs to be
154 // equivalent to "%+4Y".
155 // See also http://austingroupbugs.net/view.php?id=739
156 checkStrftime("%Y", &tm1, "2016");
157 checkStrftime("%05Y", &tm1, "02016");
158 checkStrftime("%+4Y", &tm1, "2016");
159 checkStrftime("%+5Y", &tm1, "+2016");
160 checkStrftime("%Y", &tm2, "+10009");
161 checkStrftime("%05Y", &tm2, "10009");
162 checkStrftime("%Y", &tm3, "0000");
163 checkStrftime("%02Y", &tm3, "00");
164 checkStrftime("%+5Y", &tm3, "+0000");
165 checkStrftime("%Y", &tm4, "-123");
166 checkStrftime("%+4Y", &tm4, "-123");
167 checkStrftime("%+5Y", &tm4, "-0123");
168
169 if (INT_MAX == 0x7FFFFFFF) {
170 // The standard does not specify any range for tm_year, so INT_MAX
171 // should be valid.
172 checkStrftime("%y", &tm5, "47");
173 checkStrftime("%Y", &tm5, "+2147485547");
174 checkStrftime("%011Y", &tm5, "02147485547");
175 if (sizeof(time_t) * CHAR_BIT >= 64) {
176 checkStrftime("%s", &tm5, "67768036160140800");
177 }
178 }
179
180 return t_status;
181 }
182