hi
thanks for the code. is it GPL'D ? (may i use it).
anyway, python's time.timezone returns -7200 while this code returns
+10800 ( -2 hours relative to +3 hours )
why is that ?
erez.
On Sun, 2002-08-04 at 19:20, Ehud Karni wrote:
> On 04 Aug 2002 18:54:44 +0300, Erez Doron <[EMAIL PROTECTED]> wrote:
> >
> > i am writing a small app in C and i need to get the timezone
> > ( e.g. -2:00 for israel )
> > how do i do that ?
> >
> > the timezone variable from <time.h> returns 0
>
> Bellow is my function for getting the offset (It should work on any
> system, even M$Windoze). It is better than checking TZ because it
> will have the DST included automatically.
>
> Ehud.
>
>
> static int get_ofst ( void ) /* compute offset from GMT */
> {
> #define FDAY 86400 /* full day in seconds 24*60*60 */
> #define HDAY 43200 /* half day in seconds */
> struct tm ofst;
> long tloc ; /* seconds from 1/1/1970 0.0.0 GMT */
> int sec_ofst ;
>
> time (& tloc) ; /* get current time */
> ofst = *gmtime (& tloc) ; /* find GMT hour */
> sec_ofst = ( ofst.tm_hour * 60 +
> ofst.tm_min ) * 60 +
> ofst.tm_sec ; /* GMT hour (in seconds) */
> ofst = *localtime (& tloc) ; /* find local hour */
> sec_ofst = ( ( ofst.tm_hour * 60 +
> ofst.tm_min ) * 60 +
> ofst.tm_sec - sec_ofst
> + FDAY ) % FDAY ; /* Local - GMT hours (in seconds, 0-FDAY)
>*/
> if ( sec_ofst > HDAY )
> sec_ofst -= FDAY ; /* sec_ofst in range -11:59:59 +12:00:00
>*/
> sprintf ( p_date , "%02d/%02d/%02d" , /* save date */
> ofst.tm_mday ,
> ( ofst.tm_mon + 1 ) ,
> ( ofst.tm_year % 100 ) ) ;
> return ( sec_ofst ) ;
> }
>
>
>
> --
> Ehud Karni Tel: +972-3-7966-561 /"\
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