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msvcrt: Reimplement _tzset function.

This commit is contained in:
Piotr Caban 2012-12-10 12:46:46 +01:00 committed by Alexandre Julliard
parent e5a25ec5c5
commit 351dff91de
1 changed files with 85 additions and 61 deletions
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146
dlls/msvcrt/time.c
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@ -24,6 +24,7 @@
#include "config.h"
#include <stdlib.h>
#define _POSIX_PTHREAD_SEMANTICS /* switch to a 2 arg style asctime_r on Solaris */
#include <time.h>
#ifdef HAVE_SYS_TIMES_H
@ -92,6 +93,90 @@ static inline void write_invalid_msvcrt_tm( struct MSVCRT_tm *tm )
tm->tm_isdst = -1;
}
/*********************************************************************
* _daylight (MSVCRT.@)
*/
int MSVCRT___daylight = 1;
/*********************************************************************
* _timezone (MSVCRT.@)
*/
MSVCRT_long MSVCRT___timezone = 28800;
/*********************************************************************
* _dstbias (MSVCRT.@)
*/
int MSVCRT__dstbias = -3600;
/*********************************************************************
* _tzname (MSVCRT.@)
* NOTES
* Some apps (notably Mozilla) insist on writing to these, so the buffer
* must be large enough.
*/
static char tzname_std[64] = "PST";
static char tzname_dst[64] = "PDT";
char *MSVCRT__tzname[2] = { tzname_std, tzname_dst };
static TIME_ZONE_INFORMATION tzi = {0};
/*********************************************************************
* _tzset (MSVCRT.@)
*/
void CDECL MSVCRT__tzset(void)
{
char *tz = MSVCRT_getenv("TZ");
BOOL error;
_mlock(_TIME_LOCK);
if(tz && tz[0]) {
BOOL neg_zone = FALSE;
memset(&tzi, 0, sizeof(tzi));
/* Parse timezone information: tzn[+|-]hh[:mm[:ss]][dzn] */
lstrcpynA(MSVCRT__tzname[0], tz, 3);
tz += 3;
if(*tz == '-') {
neg_zone = TRUE;
tz++;
}else if(*tz == '+') {
tz++;
}
MSVCRT___timezone = strtol(tz, &tz, 10)*3600;
if(*tz == ':') {
MSVCRT___timezone += strtol(tz+1, &tz, 10)*60;
if(*tz == ':')
MSVCRT___timezone += strtol(tz+1, &tz, 10);
}
if(neg_zone)
MSVCRT___timezone = -MSVCRT___timezone;
MSVCRT___daylight = *tz;
lstrcpynA(MSVCRT__tzname[1], tz, 3);
}else if(GetTimeZoneInformation(&tzi) != TIME_ZONE_ID_INVALID) {
MSVCRT___timezone = tzi.Bias*60;
if(tzi.StandardDate.wMonth)
MSVCRT___timezone += tzi.StandardBias*60;
if(tzi.DaylightDate.wMonth) {
MSVCRT___daylight = 1;
MSVCRT__dstbias = (tzi.DaylightBias-tzi.StandardBias)*60;
}else {
MSVCRT___daylight = 0;
MSVCRT__dstbias = 0;
}
if(!WideCharToMultiByte(CP_ACP, 0, tzi.StandardName, -1, MSVCRT__tzname[0],
sizeof(tzname_std), NULL, &error) || error)
*MSVCRT__tzname[0] = 0;
if(!WideCharToMultiByte(CP_ACP, 0, tzi.DaylightName, -1, MSVCRT__tzname[1],
sizeof(tzname_dst), NULL, &error) || error)
*MSVCRT__tzname[0] = 0;
}
_munlock(_TIME_LOCK);
}
#define SECSPERDAY 86400
/* 1601 to 1970 is 369 years plus 89 leap days */
#define SECS_1601_TO_1970 ((369 * 365 + 89) * (ULONGLONG)SECSPERDAY)
@ -700,11 +785,6 @@ MSVCRT___time32_t CDECL MSVCRT_time(MSVCRT___time32_t* buf)
}
#endif
/*********************************************************************
* _daylight (MSVCRT.@)
*/
int MSVCRT___daylight = 0;
/*********************************************************************
* __p_daylight (MSVCRT.@)
*/
@ -713,11 +793,6 @@ int * CDECL MSVCRT___p__daylight(void)
return &MSVCRT___daylight;
}
/*********************************************************************
* _dstbias (MSVCRT.@)
*/
int MSVCRT__dstbias = 0;
/*********************************************************************
* __p_dstbias (MSVCRT.@)
*/
@ -726,11 +801,6 @@ int * CDECL __p__dstbias(void)
return &MSVCRT__dstbias;
}
/*********************************************************************
* _timezone (MSVCRT.@)
*/
MSVCRT_long MSVCRT___timezone = 0;
/*********************************************************************
* __p_timezone (MSVCRT.@)
*/
@ -739,17 +809,6 @@ MSVCRT_long * CDECL MSVCRT___p__timezone(void)
return &MSVCRT___timezone;
}
/*********************************************************************
* _tzname (MSVCRT.@)
* NOTES
* Some apps (notably Mozilla) insist on writing to these, so the buffer
* must be large enough. The size is picked based on observation of
* Windows XP.
*/
static char tzname_std[64] = "PST";
static char tzname_dst[64] = "PDT";
char *MSVCRT__tzname[2] = { tzname_std, tzname_dst };
/*********************************************************************
* _get_tzname (MSVCRT.@)
*/
@ -792,41 +851,6 @@ char ** CDECL __p__tzname(void)
return MSVCRT__tzname;
}
/*********************************************************************
* _tzset (MSVCRT.@)
*/
void CDECL MSVCRT__tzset(void)
{
tzset();
#if defined(HAVE_TIMEZONE) && defined(HAVE_DAYLIGHT)
MSVCRT___daylight = daylight;
MSVCRT___timezone = timezone;
#else
{
static const time_t seconds_in_year = (365 * 24 + 6) * 3600;
time_t t;
struct tm *tmp;
int zone_january, zone_july;
_mlock(_TIME_LOCK);
t = (time(NULL) / seconds_in_year) * seconds_in_year;
tmp = localtime(&t);
zone_january = -tmp->tm_gmtoff;
t += seconds_in_year / 2;
tmp = localtime(&t);
zone_july = -tmp->tm_gmtoff;
_munlock(_TIME_LOCK);
MSVCRT___daylight = (zone_january != zone_july);
MSVCRT___timezone = max(zone_january, zone_july);
}
#endif
lstrcpynA(tzname_std, tzname[0], sizeof(tzname_std));
tzname_std[sizeof(tzname_std) - 1] = '\0';
lstrcpynA(tzname_dst, tzname[1], sizeof(tzname_dst));
tzname_dst[sizeof(tzname_dst) - 1] = '\0';
}
static inline BOOL strftime_date(char *str, MSVCRT_size_t *pos, MSVCRT_size_t max,
BOOL alternate, const struct MSVCRT_tm *mstm, MSVCRT___lc_time_data *time_data)
{