1 64bcfff3 2003-11-25 devnull #define NOPLAN9DEFINES
  2 5db07ba9 2006-03-03 devnull #include <u.h>
  3 fd04aace 2003-11-23 devnull #include <libc.h>
  4 5db07ba9 2006-03-03 devnull #include <stdlib.h> /* setenv etc. */
  5 64bcfff3 2003-11-25 devnull #include <time.h>
  6 fd04aace 2003-11-23 devnull 
  7 5db07ba9 2006-03-03 devnull static int didtz;
  8 5db07ba9 2006-03-03 devnull static int tzdelta;
  9 33433b3f 2007-04-17 devnull static char tzone[32];
 10 fd04aace 2003-11-23 devnull 
 11 5db07ba9 2006-03-03 devnull static void
 12 5db07ba9 2006-03-03 devnull dotz(void)
 13 5db07ba9 2006-03-03 devnull {
 14 5db07ba9 2006-03-03 devnull 	time_t t;
 15 7f420fb3 2006-05-20 devnull 	struct tm *gtm;
 16 7f420fb3 2006-05-20 devnull 	struct tm tm;
 17 fd04aace 2003-11-23 devnull 
 18 5db07ba9 2006-03-03 devnull 	if(didtz)
 19 5db07ba9 2006-03-03 devnull 		return;
 20 6bd2526b 2006-05-30 devnull 	didtz = 1;
 21 5db07ba9 2006-03-03 devnull 	t = time(0);
 22 5db07ba9 2006-03-03 devnull 	strftime(tzone, sizeof tzone, "%Z", localtime(&t));
 23 7f420fb3 2006-05-20 devnull 	tm = *localtime(&t);	/* set local time zone field */
 24 7f420fb3 2006-05-20 devnull 	gtm = gmtime(&t);
 25 7f420fb3 2006-05-20 devnull 	tm.tm_sec = gtm->tm_sec;
 26 7f420fb3 2006-05-20 devnull 	tm.tm_min = gtm->tm_min;
 27 7f420fb3 2006-05-20 devnull 	tm.tm_hour = gtm->tm_hour;
 28 7f420fb3 2006-05-20 devnull 	tm.tm_mday = gtm->tm_mday;
 29 7f420fb3 2006-05-20 devnull 	tm.tm_mon = gtm->tm_mon;
 30 7f420fb3 2006-05-20 devnull 	tm.tm_year = gtm->tm_year;
 31 7f420fb3 2006-05-20 devnull 	tm.tm_wday = gtm->tm_wday;
 32 7f420fb3 2006-05-20 devnull 	tzdelta = t - mktime(&tm);
 33 5db07ba9 2006-03-03 devnull }
 34 64bcfff3 2003-11-25 devnull 
 35 fd04aace 2003-11-23 devnull static void
 36 5db07ba9 2006-03-03 devnull tm2Tm(struct tm *tm, Tm *bigtm, int gmt)
 37 fd04aace 2003-11-23 devnull {
 38 fd04aace 2003-11-23 devnull 	memset(bigtm, 0, sizeof *bigtm);
 39 fd04aace 2003-11-23 devnull 	bigtm->sec = tm->tm_sec;
 40 fd04aace 2003-11-23 devnull 	bigtm->min = tm->tm_min;
 41 fd04aace 2003-11-23 devnull 	bigtm->hour = tm->tm_hour;
 42 fd04aace 2003-11-23 devnull 	bigtm->mday = tm->tm_mday;
 43 fd04aace 2003-11-23 devnull 	bigtm->mon = tm->tm_mon;
 44 fd04aace 2003-11-23 devnull 	bigtm->year = tm->tm_year;
 45 fd04aace 2003-11-23 devnull 	bigtm->wday = tm->tm_wday;
 46 5db07ba9 2006-03-03 devnull 	if(gmt){
 47 5db07ba9 2006-03-03 devnull 		strcpy(bigtm->zone, "GMT");
 48 5db07ba9 2006-03-03 devnull 		bigtm->tzoff = 0;
 49 5db07ba9 2006-03-03 devnull 	}else{
 50 5db07ba9 2006-03-03 devnull 		dotz();
 51 33433b3f 2007-04-17 devnull 		strncpy(bigtm->zone, tzone, 3);
 52 33433b3f 2007-04-17 devnull 		bigtm->zone[3] = 0;
 53 5db07ba9 2006-03-03 devnull 		bigtm->tzoff = tzdelta;
 54 8ad51794 2004-03-25 devnull 	}
 55 fd04aace 2003-11-23 devnull }
 56 fd04aace 2003-11-23 devnull 
 57 fd04aace 2003-11-23 devnull static void
 58 fd04aace 2003-11-23 devnull Tm2tm(Tm *bigtm, struct tm *tm)
 59 fd04aace 2003-11-23 devnull {
 60 6452f95b 2006-05-18 devnull 	/* initialize with current time to get local time zone! (tm_isdst) */
 61 6452f95b 2006-05-18 devnull 	time_t t;
 62 6452f95b 2006-05-18 devnull 	time(&t);
 63 6452f95b 2006-05-18 devnull 	*tm = *localtime(&t);
 64 6452f95b 2006-05-18 devnull 
 65 fd04aace 2003-11-23 devnull 	tm->tm_sec = bigtm->sec;
 66 fd04aace 2003-11-23 devnull 	tm->tm_min = bigtm->min;
 67 fd04aace 2003-11-23 devnull 	tm->tm_hour = bigtm->hour;
 68 fd04aace 2003-11-23 devnull 	tm->tm_mday = bigtm->mday;
 69 fd04aace 2003-11-23 devnull 	tm->tm_mon = bigtm->mon;
 70 fd04aace 2003-11-23 devnull 	tm->tm_year = bigtm->year;
 71 fd04aace 2003-11-23 devnull 	tm->tm_wday = bigtm->wday;
 72 fd04aace 2003-11-23 devnull }
 73 fd04aace 2003-11-23 devnull 
 74 fd04aace 2003-11-23 devnull Tm*
 75 829e8223 2004-12-29 devnull p9gmtime(long x)
 76 fd04aace 2003-11-23 devnull {
 77 829e8223 2004-12-29 devnull 	time_t t;
 78 fd04aace 2003-11-23 devnull 	struct tm tm;
 79 5db07ba9 2006-03-03 devnull 	static Tm bigtm;
 80 5db07ba9 2006-03-03 devnull 	
 81 829e8223 2004-12-29 devnull 	t = (time_t)x;
 82 fd04aace 2003-11-23 devnull 	tm = *gmtime(&t);
 83 5db07ba9 2006-03-03 devnull 	tm2Tm(&tm, &bigtm, 1);
 84 fd04aace 2003-11-23 devnull 	return &bigtm;
 85 fd04aace 2003-11-23 devnull }
 86 fd04aace 2003-11-23 devnull 
 87 fd04aace 2003-11-23 devnull Tm*
 88 829e8223 2004-12-29 devnull p9localtime(long x)
 89 fd04aace 2003-11-23 devnull {
 90 829e8223 2004-12-29 devnull 	time_t t;
 91 fd04aace 2003-11-23 devnull 	struct tm tm;
 92 5db07ba9 2006-03-03 devnull 	static Tm bigtm;
 93 fd04aace 2003-11-23 devnull 
 94 829e8223 2004-12-29 devnull 	t = (time_t)x;
 95 fd04aace 2003-11-23 devnull 	tm = *localtime(&t);
 96 5db07ba9 2006-03-03 devnull 	tm2Tm(&tm, &bigtm, 0);
 97 fd04aace 2003-11-23 devnull 	return &bigtm;
 98 fd04aace 2003-11-23 devnull }
 99 fd04aace 2003-11-23 devnull 
100 fd04aace 2003-11-23 devnull long
101 fd04aace 2003-11-23 devnull p9tm2sec(Tm *bigtm)
102 fd04aace 2003-11-23 devnull {
103 5db07ba9 2006-03-03 devnull 	time_t t;
104 fd04aace 2003-11-23 devnull 	struct tm tm;
105 fd04aace 2003-11-23 devnull 
106 fd04aace 2003-11-23 devnull 	Tm2tm(bigtm, &tm);
107 5db07ba9 2006-03-03 devnull 	t = mktime(&tm);
108 5db07ba9 2006-03-03 devnull 	if(strcmp(bigtm->zone, "GMT") == 0 || strcmp(bigtm->zone, "UCT") == 0){
109 5db07ba9 2006-03-03 devnull 		dotz();
110 5db07ba9 2006-03-03 devnull 		t += tzdelta;
111 5db07ba9 2006-03-03 devnull 	}
112 5db07ba9 2006-03-03 devnull 	return t;
113 fd04aace 2003-11-23 devnull }
114 fd04aace 2003-11-23 devnull