NetBSD/gnu/dist/gawk/missing/tzset.c

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1999-06-14 00:39:15 +04:00
/*
* tzset.c
*
* Quick and dirty emulation of tzset(), tzname[], and daylight
* for old BSD systems without it.
*
* Thanks to Rick Adams, rick@uunet.uu.net, for the basics.
*
* BUGS:
* Totally ignores the value of the TZ environment variable.
*/
#if 0
#include <time.h>
#endif
#include <sys/time.h>
static char tz1[1024];
static char tz2[1024];
/* external variables */
char *tzname[2] = {
tz1, tz2
};
int daylight;
extern char *timezone();
void
tzset()
{
struct timeval tp;
struct timezone tz;
(void) gettimeofday(&tp, &tz);
(void) strcpy(tz1, timezone(tz.tz_minuteswest, 0));
(void) strcpy(tz2, timezone(tz.tz_minuteswest, 1));
daylight = tz.tz_dsttime;
}