1 fd04aace 2003-11-23 devnull #include <u.h>
  2 8ad51794 2004-03-25 devnull #include <stdlib.h> /* setenv etc. */
  3 64bcfff3 2003-11-25 devnull #define NOPLAN9DEFINES
  4 fd04aace 2003-11-23 devnull #include <libc.h>
  5 64bcfff3 2003-11-25 devnull #include <time.h>
  6 fd04aace 2003-11-23 devnull 
  7 64bcfff3 2003-11-25 devnull #define _HAVETIMEGM 1
  8 64bcfff3 2003-11-25 devnull #define _HAVETMZONE 1
  9 64bcfff3 2003-11-25 devnull #define _HAVETMTZOFF 1
 10 fd04aace 2003-11-23 devnull 
 11 64bcfff3 2003-11-25 devnull #if defined(__linux__)
 12 64bcfff3 2003-11-25 devnull #	undef _HAVETMZONE
 13 64bcfff3 2003-11-25 devnull #	undef _HAVETMTZOFF
 14 fd04aace 2003-11-23 devnull 
 15 64bcfff3 2003-11-25 devnull #elif defined(__sun__)
 16 64bcfff3 2003-11-25 devnull #	undef _HAVETIMEGM
 17 64bcfff3 2003-11-25 devnull #	undef _HAVETMZONE
 18 64bcfff3 2003-11-25 devnull #	undef _HAVETMTZOFF
 19 64bcfff3 2003-11-25 devnull 
 20 64bcfff3 2003-11-25 devnull #endif
 21 64bcfff3 2003-11-25 devnull 
 22 fd04aace 2003-11-23 devnull static Tm bigtm;
 23 fd04aace 2003-11-23 devnull 
 24 fd04aace 2003-11-23 devnull static void
 25 fd04aace 2003-11-23 devnull tm2Tm(struct tm *tm, Tm *bigtm)
 26 fd04aace 2003-11-23 devnull {
 27 8ad51794 2004-03-25 devnull 	char *s;
 28 8ad51794 2004-03-25 devnull 
 29 fd04aace 2003-11-23 devnull 	memset(bigtm, 0, sizeof *bigtm);
 30 fd04aace 2003-11-23 devnull 	bigtm->sec = tm->tm_sec;
 31 fd04aace 2003-11-23 devnull 	bigtm->min = tm->tm_min;
 32 fd04aace 2003-11-23 devnull 	bigtm->hour = tm->tm_hour;
 33 fd04aace 2003-11-23 devnull 	bigtm->mday = tm->tm_mday;
 34 fd04aace 2003-11-23 devnull 	bigtm->mon = tm->tm_mon;
 35 fd04aace 2003-11-23 devnull 	bigtm->year = tm->tm_year;
 36 fd04aace 2003-11-23 devnull 	bigtm->wday = tm->tm_wday;
 37 1c253ceb 2003-11-23 devnull #ifdef _HAVETMZONE
 38 fd04aace 2003-11-23 devnull 	strecpy(bigtm->zone, bigtm->zone+4, tm->tm_zone);
 39 1c253ceb 2003-11-23 devnull #endif
 40 1c253ceb 2003-11-23 devnull #ifdef _HAVETZOFF
 41 fd04aace 2003-11-23 devnull 	bigtm->tzoff = tm->tm_gmtoff;
 42 1c253ceb 2003-11-23 devnull #endif
 43 8ad51794 2004-03-25 devnull 	if(bigtm->zone[0] == 0){
 44 8ad51794 2004-03-25 devnull 		s = getenv("TIMEZONE");
 45 8ad51794 2004-03-25 devnull 		if(s){
 46 be22ae2d 2004-03-26 devnull 			strecpy(bigtm->zone, bigtm->zone+4, s);
 47 8ad51794 2004-03-25 devnull 			free(s);
 48 8ad51794 2004-03-25 devnull 		}
 49 8ad51794 2004-03-25 devnull 	}
 50 fd04aace 2003-11-23 devnull }
 51 fd04aace 2003-11-23 devnull 
 52 fd04aace 2003-11-23 devnull static void
 53 fd04aace 2003-11-23 devnull Tm2tm(Tm *bigtm, struct tm *tm)
 54 fd04aace 2003-11-23 devnull {
 55 fd04aace 2003-11-23 devnull 	memset(tm, 0, sizeof *tm);
 56 fd04aace 2003-11-23 devnull 	tm->tm_sec = bigtm->sec;
 57 fd04aace 2003-11-23 devnull 	tm->tm_min = bigtm->min;
 58 fd04aace 2003-11-23 devnull 	tm->tm_hour = bigtm->hour;
 59 fd04aace 2003-11-23 devnull 	tm->tm_mday = bigtm->mday;
 60 fd04aace 2003-11-23 devnull 	tm->tm_mon = bigtm->mon;
 61 fd04aace 2003-11-23 devnull 	tm->tm_year = bigtm->year;
 62 fd04aace 2003-11-23 devnull 	tm->tm_wday = bigtm->wday;
 63 1c253ceb 2003-11-23 devnull #ifdef _HAVETMZONE
 64 fd04aace 2003-11-23 devnull 	tm->tm_zone = bigtm->zone;
 65 1c253ceb 2003-11-23 devnull #endif
 66 1c253ceb 2003-11-23 devnull #ifdef _HAVETZOFF
 67 fd04aace 2003-11-23 devnull 	tm->tm_gmtoff = bigtm->tzoff;
 68 1c253ceb 2003-11-23 devnull #endif
 69 fd04aace 2003-11-23 devnull }
 70 fd04aace 2003-11-23 devnull 
 71 fd04aace 2003-11-23 devnull Tm*
 72 fd04aace 2003-11-23 devnull p9gmtime(long t)
 73 fd04aace 2003-11-23 devnull {
 74 fd04aace 2003-11-23 devnull 	struct tm tm;
 75 fd04aace 2003-11-23 devnull 
 76 fd04aace 2003-11-23 devnull 	tm = *gmtime(&t);
 77 fd04aace 2003-11-23 devnull 	tm2Tm(&tm, &bigtm);
 78 fd04aace 2003-11-23 devnull 	return &bigtm;
 79 fd04aace 2003-11-23 devnull }
 80 fd04aace 2003-11-23 devnull 
 81 fd04aace 2003-11-23 devnull Tm*
 82 fd04aace 2003-11-23 devnull p9localtime(long t)
 83 fd04aace 2003-11-23 devnull {
 84 fd04aace 2003-11-23 devnull 	struct tm tm;
 85 fd04aace 2003-11-23 devnull 
 86 fd04aace 2003-11-23 devnull 	tm = *localtime(&t);
 87 fd04aace 2003-11-23 devnull 	tm2Tm(&tm, &bigtm);
 88 fd04aace 2003-11-23 devnull 	return &bigtm;
 89 fd04aace 2003-11-23 devnull }
 90 fd04aace 2003-11-23 devnull 
 91 d2c4ee9e 2003-11-24 devnull #if !defined(_HAVETIMEGM)
 92 d2c4ee9e 2003-11-24 devnull static time_t
 93 1c253ceb 2003-11-23 devnull timegm(struct tm *tm)
 94 1c253ceb 2003-11-23 devnull {
 95 d2c4ee9e 2003-11-24 devnull 	time_t ret;
 96 d2c4ee9e 2003-11-24 devnull 	char *tz;
 97 64bcfff3 2003-11-25 devnull 	char *s;
 98 d2c4ee9e 2003-11-24 devnull 
 99 d2c4ee9e 2003-11-24 devnull 	tz = getenv("TZ");
100 64bcfff3 2003-11-25 devnull 	putenv("TZ=");
101 d2c4ee9e 2003-11-24 devnull 	tzset();
102 d2c4ee9e 2003-11-24 devnull 	ret = mktime(tm);
103 64bcfff3 2003-11-25 devnull 	if(tz){
104 64bcfff3 2003-11-25 devnull 		s = smprint("TZ=%s", tz);
105 64bcfff3 2003-11-25 devnull 		if(s)
106 64bcfff3 2003-11-25 devnull 			putenv(s);
107 64bcfff3 2003-11-25 devnull 	}
108 d2c4ee9e 2003-11-24 devnull 	return ret;
109 1c253ceb 2003-11-23 devnull }
110 1c253ceb 2003-11-23 devnull #endif
111 1c253ceb 2003-11-23 devnull 
112 fd04aace 2003-11-23 devnull long
113 fd04aace 2003-11-23 devnull p9tm2sec(Tm *bigtm)
114 fd04aace 2003-11-23 devnull {
115 fd04aace 2003-11-23 devnull 	struct tm tm;
116 fd04aace 2003-11-23 devnull 
117 fd04aace 2003-11-23 devnull 	Tm2tm(bigtm, &tm);
118 fd04aace 2003-11-23 devnull 	if(strcmp(bigtm->zone, "GMT") == 0 || strcmp(bigtm->zone, "UCT") == 0)
119 fd04aace 2003-11-23 devnull 		return timegm(&tm);
120 fd04aace 2003-11-23 devnull 	return mktime(&tm);	/* local time zone */
121 fd04aace 2003-11-23 devnull }
122 fd04aace 2003-11-23 devnull