#ifndef _WX_DATETIME_H
#define _WX_DATETIME_H
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
- #pragma interface "datetime.h"
-#endif
-
#include "wx/defs.h"
#if wxUSE_DATETIME
* 5. wxDateTimeHolidayAuthority for Easter and other christian feasts
*/
+/* Two wrapper functions for thread safety */
+#ifdef HAVE_LOCALTIME_R
+#define wxLocaltime_r localtime_r
+#else
+struct tm *wxLocaltime_r(const time_t*, struct tm*);
+#if wxUSE_THREADS && !defined(__WINDOWS__) && !defined(__WATCOMC__)
+ // On Windows, localtime _is_ threadsafe!
+#warning using pseudo thread-safe wrapper for localtime to emulate localtime_r
+#endif
+#endif
+
+#ifdef HAVE_GMTIME_R
+#define wxGmtime_r gmtime_r
+#else
+struct tm *wxGmtime_r(const time_t*, struct tm*);
+#if wxUSE_THREADS && !defined(__WINDOWS__) && !defined(__WATCOMC__)
+ // On Windows, gmtime _is_ threadsafe!
+#warning using pseudo thread-safe wrapper for gmtime to emulate gmtime_r
+#endif
+#endif
+
/*
The three (main) classes declared in this header represent:
static bool IsLeapYear(int year = Inv_Year, Calendar cal = Gregorian);
// get the century (19 for 1999, 20 for 2000 and -5 for 492 BC)
- static int GetCentury(int year = Inv_Year);
+ static int GetCentury(int year);
// returns the number of days in this year (356 or 355 for Gregorian
// calendar usually :-)
Month month = Inv_Month,
int year = Inv_Year);
+#if WXWIN_COMPATIBILITY_2_6
// sets the date to the given day of the given week in the year,
// returns true on success and false if given date doesn't exist (e.g.
// numWeek is > 53)
wxDEPRECATED( wxDateTime GetWeek(wxDateTime_t numWeek,
WeekDay weekday = Mon,
WeekFlags flags = Monday_First) const );
+#endif // WXWIN_COMPATIBILITY_2_6
// returns the date corresponding to the given week day of the given
// week (in ISO notation) of the specified year
// religious holidays (Easter...) or moon/solar eclipses? Some
// algorithms can be found in the calendar FAQ
- // timezone stuff: a wxDateTime object constructed using given
- // day/month/year/hour/min/sec values correspond to this moment in local
- // time. Using the functions below, it may be converted to another time
- // zone (for example, the Unix epoch is wxDateTime(1, Jan, 1970).ToGMT())
+
+ // Timezone stuff: a wxDateTime object constructed using given
+ // day/month/year/hour/min/sec values is interpreted as this moment in
+ // local time. Using the functions below, it may be converted to another
+ // time zone (e.g., the Unix epoch is wxDateTime(1, Jan, 1970).ToGMT()).
//
- // these functions try to handle DST internally, but there is no magical
+ // These functions try to handle DST internally, but there is no magical
// way to know all rules for it in all countries in the world, so if the
// program can handle it itself (or doesn't want to handle it at all for
// whatever reason), the DST handling can be disabled with noDST.
- //
- // Converting to the local time zone doesn't do anything.
// ------------------------------------------------------------------------
// transform to any given timezone
inline wxDateTime ToTimezone(const TimeZone& tz, bool noDST = false) const;
wxDateTime& MakeTimezone(const TimeZone& tz, bool noDST = false);
- // transform to GMT/UTC
- wxDateTime ToGMT(bool noDST = false) const { return ToTimezone(GMT0, noDST); }
- wxDateTime& MakeGMT(bool noDST = false) { return MakeTimezone(GMT0, noDST); }
+ // interpret current value as being in another timezone and transform
+ // it to local one
+ inline wxDateTime FromTimezone(const TimeZone& tz, bool noDST = false) const;
+ wxDateTime& MakeFromTimezone(const TimeZone& tz, bool noDST = false);
+
+ // transform to/from GMT/UTC
+ wxDateTime ToUTC(bool noDST = false) const { return ToTimezone(UTC, noDST); }
+ wxDateTime& MakeUTC(bool noDST = false) { return MakeTimezone(UTC, noDST); }
+
+ wxDateTime ToGMT(bool noDST = false) const { return ToUTC(noDST); }
+ wxDateTime& MakeGMT(bool noDST = false) { return MakeUTC(noDST); }
+
+ wxDateTime FromUTC(bool noDST = false) const
+ { return FromTimezone(UTC, noDST); }
+ wxDateTime& MakeFromUTC(bool noDST = false)
+ { return MakeFromTimezone(UTC, noDST); }
// is daylight savings time in effect at this moment according to the
// rules of the specified country?
// the information is not available (this is compatible with ANSI C)
int IsDST(Country country = Country_Default) const;
+
// accessors: many of them take the timezone parameter which indicates the
// timezone for which to make the calculations and the default value means
// to do it for the current timezone of this machine (even if the function
// if the value is out of range
inline time_t GetTicks() const;
+ // get the century, same as GetCentury(GetYear())
+ int GetCentury(const TimeZone& tz = Local) const
+ { return GetCentury(GetYear(tz)); }
// get the year (returns Inv_Year if date is invalid)
int GetYear(const TimeZone& tz = Local) const
{ return GetTm(tz).year; }
return localtime(&t);
}
+ // get current time using thread-safe function
+ static struct tm *GetTmNow(struct tm *tmstruct);
+
private:
// the current country - as it's the same for all program objects (unless
// it runs on a _really_ big cluster system :-), this is a static member:
// constructors
// ------------------------------------------------------------------------
+ // return the timespan for the given number of milliseconds
+ static wxTimeSpan Milliseconds(wxLongLong ms) { return wxTimeSpan(0, 0, 0, ms); }
+ static wxTimeSpan Millisecond() { return Milliseconds(1); }
+
// return the timespan for the given number of seconds
- static wxTimeSpan Seconds(long sec) { return wxTimeSpan(0, 0, sec); }
+ static wxTimeSpan Seconds(wxLongLong sec) { return wxTimeSpan(0, 0, sec); }
static wxTimeSpan Second() { return Seconds(1); }
// return the timespan for the given number of minutes
// milliseconds)
inline wxTimeSpan(long hours,
long minutes = 0,
- long seconds = 0,
- long milliseconds = 0);
+ wxLongLong seconds = 0,
+ wxLongLong milliseconds = 0);
// default copy ctor is ok
return wxTimeSpan(*this).Multiply(n);
}
- // return this timespan with inversed sign
+ // return this timespan with opposite sign
wxTimeSpan Negate() const { return wxTimeSpan(-GetValue()); }
// negate the value of the timespan
wxTimeSpan& Neg() { m_diff = -GetValue(); return *this; }
/* static */
inline wxDateTime wxDateTime::Now()
{
- return wxDateTime(*GetTmNow());
+ struct tm tmstruct;
+ return wxDateTime(*GetTmNow(&tmstruct));
}
/* static */
// wxDateTime and timezones
// ----------------------------------------------------------------------------
-inline wxDateTime wxDateTime::ToTimezone(const wxDateTime::TimeZone& tz,
- bool noDST) const
+inline wxDateTime
+wxDateTime::ToTimezone(const wxDateTime::TimeZone& tz, bool noDST) const
{
MODIFY_AND_RETURN( MakeTimezone(tz, noDST) );
}
+inline wxDateTime
+wxDateTime::FromTimezone(const wxDateTime::TimeZone& tz, bool noDST) const
+{
+ MODIFY_AND_RETURN( MakeFromTimezone(tz, noDST) );
+}
+
// ----------------------------------------------------------------------------
// wxTimeSpan construction
// ----------------------------------------------------------------------------
inline wxTimeSpan::wxTimeSpan(long hours,
long minutes,
- long seconds,
- long milliseconds)
+ wxLongLong seconds,
+ wxLongLong milliseconds)
{
// assign first to avoid precision loss
m_diff = hours;
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