#ifndef DateMath_h
#define DateMath_h
#include <time.h>
#include <string.h>
#include <wtf/Noncopyable.h>
namespace KJS {
struct GregorianDateTime;
void msToGregorianDateTime(double, bool outputIsUTC, GregorianDateTime&);
double gregorianDateTimeToMS(const GregorianDateTime&, double, bool inputIsUTC);
double getUTCOffset();
int equivalentYearForDST(int year);
double getCurrentUTCTime();
const char * const weekdayName[7] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
const char * const monthName[12] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
const double hoursPerDay = 24.0;
const double minutesPerHour = 60.0;
const double secondsPerHour = 60.0 * 60.0;
const double secondsPerMinute = 60.0;
const double msPerSecond = 1000.0;
const double msPerMinute = 60.0 * 1000.0;
const double msPerHour = 60.0 * 60.0 * 1000.0;
const double msPerDay = 24.0 * 60.0 * 60.0 * 1000.0;
struct GregorianDateTime : Noncopyable {
GregorianDateTime()
: second(0)
, minute(0)
, hour(0)
, weekDay(0)
, monthDay(0)
, yearDay(0)
, month(0)
, year(0)
, isDST(0)
, utcOffset(0)
, timeZone(0)
{
}
~GregorianDateTime()
{
delete [] timeZone;
}
GregorianDateTime(const tm& inTm)
: second(inTm.tm_sec)
, minute(inTm.tm_min)
, hour(inTm.tm_hour)
, weekDay(inTm.tm_wday)
, monthDay(inTm.tm_mday)
, yearDay(inTm.tm_yday)
, month(inTm.tm_mon)
, year(inTm.tm_year)
, isDST(inTm.tm_isdst)
{
#if !PLATFORM(WIN_OS) && !PLATFORM(SOLARIS)
utcOffset = static_cast<int>(inTm.tm_gmtoff);
int inZoneSize = strlen(inTm.tm_zone) + 1;
timeZone = new char[inZoneSize];
strncpy(timeZone, inTm.tm_zone, inZoneSize);
#else
utcOffset = static_cast<int>(getUTCOffset() / msPerSecond + (isDST ? secondsPerHour : 0));
timeZone = 0;
#endif
}
operator tm() const
{
tm ret;
memset(&ret, 0, sizeof(ret));
ret.tm_sec = second;
ret.tm_min = minute;
ret.tm_hour = hour;
ret.tm_wday = weekDay;
ret.tm_mday = monthDay;
ret.tm_yday = yearDay;
ret.tm_mon = month;
ret.tm_year = year;
ret.tm_isdst = isDST;
#if !PLATFORM(WIN_OS) && !PLATFORM(SOLARIS)
ret.tm_gmtoff = static_cast<long>(utcOffset);
ret.tm_zone = timeZone;
#endif
return ret;
}
int second;
int minute;
int hour;
int weekDay;
int monthDay;
int yearDay;
int month;
int year;
int isDST;
int utcOffset;
char* timeZone;
};
}
#endif // DateMath_h