void glk_date_to_time_local(glkdate_t *date, glktimeval_t *time)
{
time_t timestamp;
struct tm tm;
glsi32 microsec;
microsec = gli_date_to_tm(date, &tm);
tm.tm_isdst = -1;
timestamp = mktime(&tm);
gli_timestamp_to_time(timestamp, microsec, time);
}
void glk_date_to_time_utc(glkdate_t *date, glktimeval_t *time)
{
time_t timestamp;
struct tm tm;
glsi32 microsec;
microsec = gli_date_to_tm(date, &tm);
/* The timegm function is not standard POSIX. If it's not available
on your platform, try setting the env var "TZ" to "", calling
mktime(), and then resetting "TZ". */
timestamp = timegm(&tm);
gli_timestamp_to_time(timestamp, microsec, time);
}
/**
* glk_date_to_simple_time_local:
* @date: A date in the form of a #glkdate_t structure.
* @factor: Factor by which to divide the time value.
*
* Does the same thing as glk_date_to_simple_time_utc(), but interprets the
* broken-out structure as local time.
*
* Returns: a timestamp divided by @factor, and truncated to 32 bits, or -1 on
* error.
*/
glsi32
glk_date_to_simple_time_local(glkdate_t *date, glui32 factor)
{
g_return_val_if_fail(date != NULL, 0);
g_return_val_if_fail(factor != 0, 0);
time_t timestamp;
struct tm tm;
gli_date_to_tm(date, &tm);
tm.tm_isdst = -1;
timestamp = mktime(&tm);
return gli_simplify_time(timestamp, factor);
}
glsi32 glk_date_to_simple_time_local(glkdate_t *date, glui32 factor)
{
time_t timestamp;
struct tm tm;
if (factor == 0) {
gli_strict_warning("date_to_simple_time_local: factor cannot be zero.");
return 0;
}
gli_date_to_tm(date, &tm);
tm.tm_isdst = -1;
timestamp = mktime(&tm);
return gli_simplify_time(timestamp, factor);
}
/**
* glk_date_to_simple_time_utc:
* @date: A date in the form of a #glkdate_t structure.
* @factor: Factor by which to divide the time value.
*
* Convert the broken-out structure (interpreted as universal time) to a
* timestamp divided by @factor. The weekday value in @date is ignored. The
* other values need not be in their normal ranges; they will be normalized.
*
* If the time cannot be represented by the platform's time library, this may
* return -1.
*
* Returns: a timestamp divided by @factor, and truncated to 32 bits, or -1 on
* error.
*/
glsi32
glk_date_to_simple_time_utc(glkdate_t *date, glui32 factor)
{
g_return_val_if_fail(date != NULL, 0);
g_return_val_if_fail(factor != 0, 0);
time_t timestamp;
struct tm tm;
gli_date_to_tm(date, &tm);
/* The timegm function is not standard POSIX. If it's not available
on your platform, try setting the env var "TZ" to "", calling
mktime(), and then resetting "TZ". */
tm.tm_isdst = 0;
timestamp = timegm(&tm);
return gli_simplify_time(timestamp, factor);
}
glsi32 glk_date_to_simple_time_utc(glkdate_t *date, glui32 factor)
{
time_t timestamp;
struct tm tm;
if (factor == 0) {
gli_strict_warning("date_to_simple_time_utc: factor cannot be zero.");
return 0;
}
gli_date_to_tm(date, &tm);
/* The timegm function is not standard POSIX. If it's not available
on your platform, try setting the env var "TZ" to "", calling
mktime(), and then resetting "TZ". */
timestamp = timegm(&tm);
return gli_simplify_time(timestamp, factor);
}
