PRMJ_setDST(PRMJTime *prtm)
{
#ifdef XP_MAC
MachineLocation machineLocation;
if(prtm->tm_isdst < 0){
MyReadLocation(&machineLocation);
/* Figure out daylight savings time. */
prtm->tm_isdst = (machineLocation.u.dlsDelta != 0);
}
#else
struct tm time;
if(prtm->tm_isdst < 0){
if(prtm->tm_year >= 1970 && prtm->tm_year <= 2037){
time.tm_sec = prtm->tm_sec ;
time.tm_min = prtm->tm_min ;
time.tm_hour = prtm->tm_hour;
time.tm_mday = prtm->tm_mday;
time.tm_mon = prtm->tm_mon ;
time.tm_wday = prtm->tm_wday;
time.tm_year = prtm->tm_year-1900;
time.tm_yday = prtm->tm_yday;
time.tm_isdst = -1;
mktime(&time);
prtm->tm_isdst = time.tm_isdst;
}
else {
prtm->tm_isdst = 0;
}
}
#endif /* XP_MAC */
}
/*
* get the difference in seconds between this time zone and UTC (GMT)
*/
JSInt32
PRMJ_LocalGMTDifference()
{
#if defined(XP_UNIX) || defined(XP_WIN) || defined(XP_OS2) || defined(XP_BEOS)
struct tm ltime;
/* get the difference between this time zone and GMT */
memset((char *)<ime,0,sizeof(ltime));
ltime.tm_mday = 2;
ltime.tm_year = 70;
#ifdef SUNOS4
ltime.tm_zone = 0;
ltime.tm_gmtoff = 0;
return timelocal(<ime) - (24 * 3600);
#else
return mktime(<ime) - (24L * 3600L);
#endif
#endif
#if defined(XP_MAC)
static JSInt32 zone = -1L;
MachineLocation machineLocation;
JSInt32 gmtOffsetSeconds;
/* difference has been set no need to recalculate */
if (zone != -1)
return zone;
/* Get the information about the local machine, including
* its GMT offset and its daylight savings time info.
* Convert each into wides that we can add to
* startupTimeMicroSeconds.
*/
MyReadLocation(&machineLocation);
/* Mask off top eight bits of gmtDelta, sign extend lower three. */
gmtOffsetSeconds = (machineLocation.u.gmtDelta << 8);
gmtOffsetSeconds >>= 8;
/* Backout OS adjustment for DST, to give consistent GMT offset. */
if (machineLocation.u.dlsDelta != 0)
gmtOffsetSeconds -= PRMJ_HOUR_SECONDS;
return (zone = -gmtOffsetSeconds);
#endif
}
PRMJ_DSTOffset(PRInt64 time)
{
PRInt64 us2s;
#ifdef XP_MAC
MachineLocation machineLocation;
PRInt64 dlsOffset;
/* Get the information about the local machine, including
* its GMT offset and its daylight savings time info.
* Convert each into wides that we can add to
* startupTimeMicroSeconds.
*/
MyReadLocation(&machineLocation);
/* Is Daylight Savings On? If so, we need to add an hour to the offset. */
if (machineLocation.u.dlsDelta != 0) {
LL_UI2L(us2s, PRMJ_USEC_PER_SEC); /* seconds in a microseconds */
LL_UI2L(dlsOffset, PRMJ_HOUR_SECONDS); /* seconds in one hour */
LL_MUL(dlsOffset, dlsOffset, us2s);
}
else
LL_I2L(dlsOffset, 0);
return(dlsOffset);
#else
time_t local;
PRInt32 diff;
PRInt64 maxtimet;
struct tm tm;
#if defined( XP_PC ) || defined( FREEBSD )
struct tm *ptm;
#endif
PRMJTime prtm;
LL_UI2L(us2s, PRMJ_USEC_PER_SEC);
LL_DIV(time, time, us2s);
/* get the maximum of time_t value */
LL_UI2L(maxtimet,PRMJ_MAX_UNIX_TIMET);
if(LL_CMP(time,>,maxtimet)){
LL_UI2L(time,PRMJ_MAX_UNIX_TIMET);
} else if(!LL_GE_ZERO(time)){
/*
* get the difference in seconds between this time zone and UTC (GMT)
*/
PR_IMPLEMENT(time_t) PRMJ_LocalGMTDifference()
{
#if defined(XP_UNIX) || defined(XP_PC)
struct tm ltime;
/* get the difference between this time zone and GMT */
memset((char *)<ime,0,sizeof(ltime));
ltime.tm_mday = 2;
ltime.tm_year = 70;
#ifdef SUNOS4
ltime.tm_zone = 0;
ltime.tm_gmtoff = 0;
return timelocal(<ime) - (24 * 3600);
#else
return mktime(<ime) - (24L * 3600L);
#endif
#endif
#if defined(XP_MAC)
static time_t zone = -1L;
MachineLocation machineLocation;
PRUint64 gmtOffsetSeconds;
PRUint64 gmtDelta;
PRUint64 dlsOffset;
PRInt32 offset;
/* difference has been set no need to recalculate */
if(zone != -1)
return zone;
/* Get the information about the local machine, including
* its GMT offset and its daylight savings time info.
* Convert each into wides that we can add to
* startupTimeMicroSeconds.
*/
MyReadLocation(&machineLocation);
/* Mask off top eight bits of gmtDelta, sign extend lower three. */
if ((machineLocation.u.gmtDelta & 0x00800000) != 0) {
gmtOffsetSeconds.lo = (machineLocation.u.gmtDelta & 0x00FFFFFF) | 0xFF000000;
gmtOffsetSeconds.hi = 0xFFFFFFFF;
LL_UI2L(gmtDelta,0);
}
else {
gmtOffsetSeconds.lo = (machineLocation.u.gmtDelta & 0x00FFFFFF);
gmtOffsetSeconds.hi = 0;
LL_UI2L(gmtDelta,PRMJ_DAY_SECONDS);
}
/* normalize time to be positive if you are behind GMT. gmtDelta will always
* be positive.
*/
LL_SUB(gmtDelta,gmtDelta,gmtOffsetSeconds);
/* Is Daylight Savings On? If so, we need to add an hour to the offset. */
if (machineLocation.u.dlsDelta != 0) {
LL_UI2L(dlsOffset, PRMJ_HOUR_SECONDS);
}
else
LL_I2L(dlsOffset, 0);
LL_ADD(gmtDelta,gmtDelta, dlsOffset);
LL_L2I(offset,gmtDelta);
zone = offset;
return (time_t)offset;
#endif
}