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    Length: 2403 (0x963)
    Types: TextFile
    Names: »dtime.c«

└─⟦b20c6495f⟧ Bits:30007238 EUUGD18: Wien-båndet, efterår 1987
    └─⟦this⟧ »EUUGD18/X/Xphoon/dtime.c« 

TextFile

#ifndef lint
static char rcsid[] =
    "@(#) $Header: dtime.c,v 1.3 88/08/26 22:29:38 jef Exp $ (LBL)";
#endif

/*
** Copyright (C) 1988 by Jef Poskanzer.
**
** Permission to use, copy, modify, and distribute this software and its
** documentation for any purpose and without fee is hereby granted, provided
** that the above copyright notice appear in all copies and that both that
** copyright notice and this permission notice appear in supporting
** documentation.  This software is provided "as is" without express or
** implied warranty.
*/

/* dtime.c - extracted from the phoon/libtws package
*/


#include "tws.h"
#include <stdio.h>
#include <sys/types.h>
#include <time.h>
#ifdef  SYS5
extern int  daylight;
extern long timezone;
extern char *tzname[];
#else	SYS5
#include <sys/timeb.h>
#endif	SYS5

static struct zone
    {
    char *std;
    char *dst;
    int shift;
    }
    zones[] = {
	"GMT", "BST", 0,
	"EST", "EDT", -5,
	"CST", "CDT", -6,
	"MST", NULL, -7,
	"PST", "PDT", -8,
	"A", NULL, -1,
	"B", NULL, -2,
	"C", NULL, -3,
	"D", NULL, -4,
	"E", NULL, -5,
	"F", NULL, -6,
	"G", NULL, -7,
	"H", NULL, -8,
	"I", NULL, -9,
	"K", NULL, -10,
	"L", NULL, -11,
	"M", NULL, -12,
	"N", NULL, 1,
#ifndef	HUJI
	"O", NULL, 2,
#else	HUJI
	"JST", "JDT", 2,
#endif	HUJI
	"P", NULL, 3,
	"Q", NULL, 4,
	"R", NULL, 5,
	"S", NULL, 6,
	"T", NULL, 7,
	"U", NULL, 8,
	"V", NULL, 9,
	"W", NULL, 10,
	"X", NULL, 11,
	"Y", NULL, 12,
	NULL };

long time( );
struct tm *localtime( );


struct tws *
dtwstime( )
    {
    long clock;

    (void) time( &clock );
    return ( dlocaltime( &clock ) );
    }


struct tws *
dlocaltime( clock )
long *clock;
    {
    register struct tm *tm;
#ifndef SYS5
    struct timeb tb;
#endif not SYS5
    static struct tws tw;

    if ( clock == NULL )
	return ( NULL );
    tw.tw_flags = TW_NULL;

    tm = localtime( clock );
    tw.tw_sec = tm -> tm_sec;
    tw.tw_min = tm -> tm_min;
    tw.tw_hour = tm -> tm_hour;
    tw.tw_mday = tm -> tm_mday;
    tw.tw_mon = tm -> tm_mon;
    tw.tw_year = tm -> tm_year;
    tw.tw_wday = tm -> tm_wday;
    tw.tw_yday = tm -> tm_yday;
    if ( tm -> tm_isdst )
	tw.tw_flags |= TW_DST;
#ifndef  SYS5
    ftime( &tb );
    tw.tw_zone = -tb.timezone;
#else   SYS5
    tzset( );
    tw.tw_zone = -(timezone / 60);
#endif  SYS5
    tw.tw_flags &= ~TW_SDAY;
    tw.tw_flags |= TW_SEXP;
    tw.tw_clock = *clock;

    return ( &tw );
    }