Josh Megnauth
72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <time.h>
|
|
|
|
#include "test_helpers.h"
|
|
|
|
#define PRINT_BUFSZ 50
|
|
#define V_BUFSZ 3
|
|
|
|
void print(time_t timestamp, char* fmt) {
|
|
char out[PRINT_BUFSZ] = {0};
|
|
size_t n = strftime(out, PRINT_BUFSZ, fmt, localtime(×tamp));
|
|
printf("%zu: %s\n", n, out);
|
|
}
|
|
|
|
void test_v(void) {
|
|
char buf[V_BUFSZ] = {0};
|
|
struct tm time = {0};
|
|
|
|
// Example dates copied from Wikipedia
|
|
// Saturday 2005-01-01
|
|
time.tm_yday = 0;
|
|
time.tm_wday = 6;
|
|
time.tm_year = 2005;
|
|
strftime(buf, V_BUFSZ, "%V", &time);
|
|
puts(buf);
|
|
|
|
// Saturday 2005-12-31
|
|
time.tm_yday = 365;
|
|
time.tm_wday = 6;
|
|
strftime(buf, V_BUFSZ, "%V", &time);
|
|
puts(buf);
|
|
|
|
// Sunday 2006-01-01
|
|
time.tm_yday = 0;
|
|
time.tm_wday = 0;
|
|
time.tm_year = 2006;
|
|
strftime(buf, V_BUFSZ, "%V", &time);
|
|
puts(buf);
|
|
|
|
// Sunday 2008-12-28
|
|
time.tm_yday = 362;
|
|
time.tm_wday = 0;
|
|
time.tm_year = 2008;
|
|
strftime(buf, V_BUFSZ, "%V", &time);
|
|
puts(buf);
|
|
|
|
// Friday 2010-01-01
|
|
time.tm_yday = 0;
|
|
time.tm_wday = 5;
|
|
time.tm_year = 2010;
|
|
strftime(buf, V_BUFSZ, "%V", &time);
|
|
puts(buf);
|
|
}
|
|
|
|
int main(void) {
|
|
print(1531808742, "%a %A %b %B");
|
|
print(1531808742, "The %Cst century");
|
|
print(1531808742, "%I:%M:%S %p");
|
|
print(1531839600, "%r");
|
|
print(1531839600, "%R");
|
|
print(1531839600, "%H %s %u");
|
|
print(1531839600, "%j %U");
|
|
print(1531839600, "%+");
|
|
print(1533669431, "%+%+%+%+%+"); // will overflow 50 characters
|
|
|
|
// ISO-8601 tests
|
|
test_v();
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|