#pragma interface "datetime.h"
#endif
+#if wxUSE_DATETIME
+
#include <time.h>
#include <limits.h> // for INT_MIN
// performances and this only leads to increased rebuild time (because every
// time an inline method is changed, all files including the header must be
// rebuilt)
-#ifdef __WXDEBUG__
+// For Mingw32, causes a link error.
+#if defined( __WXDEBUG__) && !defined(__MINGW32__)
+ #undef inline
#define inline
#endif // Debug
+// not all c-runtimes are based on 1/1/1970 being (time_t) 0
+// set this to the corresponding value in seconds 1/1/1970 has on your
+// systems c-runtime
+
+#ifdef __WXMAC__
+#if __MSL__ < 0x6000
+ #define WX_TIME_BASE_OFFSET ( 2082844800L + 126144000L )
+#else
+ #define WX_TIME_BASE_OFFSET 0
+#endif
+#else
+ #define WX_TIME_BASE_OFFSET 0
+#endif
/*
- * TODO Well, everything :-)
+ * TODO
*
* + 1. Time zones with minutes (make TimeZone a class)
- * 2. getdate() function like under Solaris
+ * ? 2. getdate() function like under Solaris
* + 3. text conversion for wxDateSpan
- * 4. pluggable modules for the workdays calculations
+ * + 4. pluggable modules for the workdays calculations
+ * 5. wxDateTimeHolidayAuthority for Easter and other christian feasts
*/
/*
wxTimeSpan + wxTimeSpan = wxTimeSpan
wxDateSpan + wxDateSpan = wxDateSpan
- substraction
+ subtraction
------------
wxDateTime - wxDateTime = wxTimeSpan
wxDateTime - wxTimeSpan = wxDateTime
-wxDateSpan = wxDateSpan
For each binary operation OP (+, -, *) we have the following operatorOP=() as
- a method and the method with a symbolic name OPER (Add, Substract, Multiply)
+ a method and the method with a symbolic name OPER (Add, Subtract, Multiply)
as a synonym for it and another const method with the same name which returns
the changed copy of the object and operatorOP() as a global function which is
implemented in terms of the const version of OPEN. For the unary - we have
the copy of the object with the changed sign.
*/
+// an invalid/default date time object which may be used as the default
+// argument for arguments of type wxDateTime; it is also returned by all
+// functions returning wxDateTime on failure (this is why it is also called
+// wxInvalidDateTime)
+class WXDLLEXPORT wxDateTime;
+
+WXDLLEXPORT_DATA(extern const wxDateTime) wxDefaultDateTime;
+#define wxInvalidDateTime wxDefaultDateTime
+
// ----------------------------------------------------------------------------
// wxDateTime represents an absolute moment in the time
// ----------------------------------------------------------------------------
Name_Abbr = 0x02 // return abbreviated name
};
+ // flags for GetWeekOfYear and GetWeekOfMonth
+ enum WeekFlags
+ {
+ Default_First, // Sunday_First for US, Monday_First for the rest
+ Monday_First, // week starts with a Monday
+ Sunday_First // week starts with a Sunday
+ };
+
// helper classes
// ------------------------------------------------------------------------
// a class representing a time zone: basicly, this is just an offset
// (in seconds) from GMT
- class TimeZone
+ class WXDLLEXPORT TimeZone
{
public:
TimeZone(TZ tz);
// NB: this struct should always be kept normalized (i.e. mon should
// be < 12, 1 <= day <= 31 &c), so use AddMonths(), AddDays()
// instead of modifying the member fields directly!
- struct Tm
+ struct WXDLLEXPORT Tm
{
wxDateTime_t msec, sec, min, hour, mday;
Month mon;
// return the wxDateTime object for the current time
static inline wxDateTime Now();
+ // return the wxDateTime object for the current time with millisecond
+ // precision (if available on this platform)
+ static wxDateTime UNow();
+
// return the wxDateTime object for today midnight: i.e. as Now() but
// with time set to 0
static inline wxDateTime Today();
// ------------------------------------------------------------------------
// default ctor does not initialize the object, use Set()!
- wxDateTime() { }
+ wxDateTime() { m_time = wxLongLong((long)ULONG_MAX, ULONG_MAX); }
// from time_t: seconds since the Epoch 00:00:00 UTC, Jan 1, 1970)
+#if (!(defined(__VISAGECPP__) && __IBMCPP__ >= 400))
+// VA C++ confuses this with wxDateTime(double jdn) thinking it is a duplicate declaration
inline wxDateTime(time_t timet);
+#endif
// from broken down time/date (only for standard Unix range)
inline wxDateTime(const struct tm& tm);
// from broken down time/date (any range)
wxDateTime_t millisec = 0);
// from separate values for each component with explicit date
inline wxDateTime(wxDateTime_t day, // day of the month
- Month month = Inv_Month,
+ Month month,
int year = Inv_Year, // 1999, not 99 please!
wxDateTime_t hour = 0,
wxDateTime_t minute = 0,
// set to the current time
inline wxDateTime& SetToCurrent();
+#if (!(defined(__VISAGECPP__) && __IBMCPP__ >= 400))
+// VA C++ confuses this with wxDateTime(double jdn) thinking it is a duplicate declaration
// set to given time_t value
inline wxDateTime& Set(time_t timet);
+#endif
// set to given broken down time/date
wxDateTime& Set(const struct tm& tm);
// from separate values for each component with explicit date
// (defaults for month and year are the current values)
wxDateTime& Set(wxDateTime_t day,
- Month month = Inv_Month,
+ Month month,
int year = Inv_Year, // 1999, not 99 please!
wxDateTime_t hour = 0,
wxDateTime_t minute = 0,
// default assignment operator is ok
// calendar calculations (functions which set the date only leave the time
- // unchanged, e.g. don't explictly zero it)
+ // unchanged, e.g. don't explictly zero it): SetXXX() functions modify the
+ // object itself, GetXXX() ones return a new object.
// ------------------------------------------------------------------------
// set to the given week day in the same week as this one
wxDateTime& SetToWeekDayInSameWeek(WeekDay weekday);
+ inline wxDateTime GetWeekDayInSameWeek(WeekDay weekday) const;
// set to the next week day following this one
wxDateTime& SetToNextWeekDay(WeekDay weekday);
+ inline wxDateTime GetNextWeekDay(WeekDay weekday) const;
- // set to the previous week day following this one
+ // set to the previous week day before this one
wxDateTime& SetToPrevWeekDay(WeekDay weekday);
+ inline wxDateTime GetPrevWeekDay(WeekDay weekday) const;
// set to Nth occurence of given weekday in the given month of the
// given year (time is set to 0), return TRUE on success and FALSE on
int n = 1,
Month month = Inv_Month,
int year = Inv_Year);
+ inline wxDateTime GetWeekDay(WeekDay weekday,
+ int n = 1,
+ Month month = Inv_Month,
+ int year = Inv_Year) const;
// sets to the last weekday in the given month, year
inline bool SetToLastWeekDay(WeekDay weekday,
Month month = Inv_Month,
int year = Inv_Year);
+ inline wxDateTime GetLastWeekDay(WeekDay weekday,
+ Month month = Inv_Month,
+ int year = Inv_Year);
// 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)
bool SetToTheWeek(wxDateTime_t numWeek, WeekDay weekday = Mon);
+ inline wxDateTime GetWeek(wxDateTime_t numWeek, WeekDay weekday = Mon) const;
// sets the date to the last day of the given (or current) month or the
// given (or current) year
wxDateTime& SetToLastMonthDay(Month month = Inv_Month,
int year = Inv_Year);
+ inline wxDateTime GetLastMonthDay(Month month = Inv_Month,
+ int year = Inv_Year) const;
// sets to the given year day (1..365 or 366)
wxDateTime& SetToYearDay(wxDateTime_t yday);
+ inline wxDateTime GetYearDay(wxDateTime_t yday) const;
// The definitions below were taken verbatim from
//
// time. Using the functions below, it may be converted to another time
// zone (for example, the Unix epoch is wxDateTime(1, Jan, 1970).ToGMT())
//
+ // 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) const;
- wxDateTime& MakeTimezone(const TimeZone& tz);
+ inline wxDateTime ToTimezone(const TimeZone& tz, bool noDST = FALSE) const;
+ wxDateTime& MakeTimezone(const TimeZone& tz, bool noDST = FALSE);
// transform to GMT/UTC
- wxDateTime ToGMT() const { return ToTimezone(GMT0); }
- wxDateTime& MakeGMT() { return MakeTimezone(GMT0); }
+ wxDateTime ToGMT(bool noDST = FALSE) const { return ToTimezone(GMT0, noDST); }
+ wxDateTime& MakeGMT(bool noDST = FALSE) { return MakeTimezone(GMT0, noDST); }
// is daylight savings time in effect at this moment according to the
// rules of the specified country?
// result of timezone shift)
// ------------------------------------------------------------------------
- // is the date valid (FALSE for uninitialized objects as well as after
- // the functions which failed to convert the date to supported range)
- inline bool IsValid() const { return this != &ms_InvDateTime; }
+ // is the date valid?
+ inline bool IsValid() const { return m_time != wxInvalidDateTime.m_time; }
// get the broken down date/time representation in the given timezone
//
inline time_t GetTicks() const;
// get the year (returns Inv_Year if date is invalid)
- int GetYear(const TimeZone& tz = Local) const
+ int GetYear(const TimeZone& tz = Local) const
{ return GetTm(tz).year; }
// get the month (Inv_Month if date is invalid)
- Month GetMonth(const TimeZone& tz = Local) const
+ Month GetMonth(const TimeZone& tz = Local) const
{ return (Month)GetTm(tz).mon; }
// get the month day (in 1..31 range, 0 if date is invalid)
- wxDateTime_t GetDay(const TimeZone& tz = Local) const
+ wxDateTime_t GetDay(const TimeZone& tz = Local) const
{ return GetTm(tz).mday; }
// get the day of the week (Inv_WeekDay if date is invalid)
- WeekDay GetWeekDay(const TimeZone& tz = Local) const
+ WeekDay GetWeekDay(const TimeZone& tz = Local) const
{ return GetTm(tz).GetWeekDay(); }
// get the hour of the day
- wxDateTime_t GetHour(const TimeZone& tz = Local) const
+ wxDateTime_t GetHour(const TimeZone& tz = Local) const
{ return GetTm(tz).hour; }
// get the minute
- wxDateTime_t GetMinute(const TimeZone& tz = Local) const
+ wxDateTime_t GetMinute(const TimeZone& tz = Local) const
{ return GetTm(tz).min; }
// get the second
- wxDateTime_t GetSecond(const TimeZone& tz = Local) const
+ wxDateTime_t GetSecond(const TimeZone& tz = Local) const
{ return GetTm(tz).sec; }
// get milliseconds
- wxDateTime_t GetMillisecond(const TimeZone& tz = Local) const
+ wxDateTime_t GetMillisecond(const TimeZone& tz = Local) const
{ return GetTm(tz).msec; }
// get the day since the year start (1..366, 0 if date is invalid)
wxDateTime_t GetDayOfYear(const TimeZone& tz = Local) const;
// get the week number since the year start (1..52 or 53, 0 if date is
// invalid)
- wxDateTime_t GetWeekOfYear(const TimeZone& tz = Local) const;
+ wxDateTime_t GetWeekOfYear(WeekFlags flags = Monday_First,
+ const TimeZone& tz = Local) const;
// get the week number since the month start (1..5, 0 if date is
// invalid)
- wxDateTime_t GetWeekOfMonth(const TimeZone& tz = Local) const;
+ wxDateTime_t GetWeekOfMonth(WeekFlags flags = Monday_First,
+ const TimeZone& tz = Local) const;
// is this date a work day? This depends on a country, of course,
// because the holidays are different in different countries
- bool IsWorkDay(Country country = Country_Default,
- const TimeZone& tz = Local) const;
+ bool IsWorkDay(Country country = Country_Default) const;
// is this date later than Gregorian calendar introduction for the
// given country (see enum GregorianAdoption)?
//
- // NB: this function shouldn't be considered as absolute authoiruty in
+ // NB: this function shouldn't be considered as absolute authority in
// the matter. Besides, for some countries the exact date of
// adoption of the Gregorian calendar is simply unknown.
bool IsGregorianDate(GregorianAdoption country = Gr_Standard) const;
// returns TRUE if the date is in the given range
inline bool IsBetween(const wxDateTime& t1, const wxDateTime& t2) const;
+ // do these two objects refer to the same date?
+ inline bool IsSameDate(const wxDateTime& dt) const;
+
+ // do these two objects have the same time?
+ inline bool IsSameTime(const wxDateTime& dt) const;
+
+ // are these two objects equal up to given timespan?
+ inline bool IsEqualUpTo(const wxDateTime& dt, const wxTimeSpan& ts) const;
+
// arithmetics with dates (see also below for more operators)
// ------------------------------------------------------------------------
inline wxDateTime& operator+=(const wxTimeSpan& diff);
// return the difference of the date with a time span
- inline wxDateTime Substract(const wxTimeSpan& diff) const;
- // substract a time span (positive or negative)
- inline wxDateTime& Substract(const wxTimeSpan& diff);
- // substract a time span (positive or negative)
+ inline wxDateTime Subtract(const wxTimeSpan& diff) const;
+ // subtract a time span (positive or negative)
+ inline wxDateTime& Subtract(const wxTimeSpan& diff);
+ // subtract a time span (positive or negative)
inline wxDateTime& operator-=(const wxTimeSpan& diff);
// return the sum of the date with a date span
inline wxDateTime& operator+=(const wxDateSpan& diff);
// return the difference of the date with a date span
- inline wxDateTime Substract(const wxDateSpan& diff) const;
- // substract a date span (positive or negative)
- inline wxDateTime& Substract(const wxDateSpan& diff);
- // substract a date span (positive or negative)
+ inline wxDateTime Subtract(const wxDateSpan& diff) const;
+ // subtract a date span (positive or negative)
+ inline wxDateTime& Subtract(const wxDateSpan& diff);
+ // subtract a date span (positive or negative)
inline wxDateTime& operator-=(const wxDateSpan& diff);
// return the difference between two dates
- inline wxTimeSpan Substract(const wxDateTime& dt) const;
+ inline wxTimeSpan Subtract(const wxDateTime& dt) const;
// conversion to/from text: all conversions from text return the pointer to
// the next character following the date specification (i.e. the one where
// default to Today() otherwise)
const wxChar *ParseFormat(const wxChar *date,
const wxChar *format = _T("%c"),
- const wxDateTime& dateDef = ms_InvDateTime);
+ const wxDateTime& dateDef = wxDefaultDateTime);
// parse a string containing the date/time in "free" format, this
// function will try to make an educated guess at the string contents
const wxChar *ParseDateTime(const wxChar *datetime);
wxString FormatDate() const { return Format(_T("%x")); }
// preferred time representation for the current locale
wxString FormatTime() const { return Format(_T("%X")); }
+ // returns the string representing the date in ISO 8601 format
+ // (YYYY-MM-DD)
+ wxString FormatISODate() const { return Format(_T("%Y-%m-%d")); }
+ // returns the string representing the time in ISO 8601 format
+ // (HH:MM:SS)
+ wxString FormatISOTime() const { return Format(_T("%H:%M:%S")); }
// implementation
// ------------------------------------------------------------------------
// fixed to 1000
static const long TIME_T_FACTOR;
- // invalid wxDateTime object - returned by all functions which return
- // "wxDateTime &" on failure
- static wxDateTime ms_InvDateTime;
-
// returns TRUE if we fall in range in which we can use standard ANSI C
// functions
inline bool IsInStdRange() const;
// ----------------------------------------------------------------------------
// This class contains a difference between 2 wxDateTime values, so it makes
-// sense to add it to wxDateTime and it is the result of substraction of 2
+// sense to add it to wxDateTime and it is the result of subtraction of 2
// objects of that class. See also wxDateSpan.
// ----------------------------------------------------------------------------
// ------------------------------------------------------------------------
// return the timespan for the given number of seconds
- static wxTimeSpan Seconds(int sec) { return wxTimeSpan(0, 0, sec); }
+ static wxTimeSpan Seconds(long sec) { return wxTimeSpan(0, 0, sec); }
static wxTimeSpan Second() { return Seconds(1); }
// return the timespan for the given number of minutes
- static wxTimeSpan Minutes(int min) { return wxTimeSpan(0, min, 0 ); }
+ static wxTimeSpan Minutes(long min) { return wxTimeSpan(0, min, 0 ); }
static wxTimeSpan Minute() { return Minutes(1); }
// return the timespan for the given number of hours
- static wxTimeSpan Hours(int hours) { return wxTimeSpan(hours, 0, 0); }
+ static wxTimeSpan Hours(long hours) { return wxTimeSpan(hours, 0, 0); }
static wxTimeSpan Hour() { return Hours(1); }
// return the timespan for the given number of days
- static wxTimeSpan Days(int days) { return Hours(24 * days); }
+ static wxTimeSpan Days(long days) { return Hours(24 * days); }
static wxTimeSpan Day() { return Days(1); }
// return the timespan for the given number of weeks
- static wxTimeSpan Weeks(int days) { return Days(7 * days); }
+ static wxTimeSpan Weeks(long days) { return Days(7 * days); }
static wxTimeSpan Week() { return Weeks(1); }
// default ctor constructs the 0 time span
// from separate values for each component, date set to 0 (hours are
// not restricted to 0..24 range, neither are minutes, seconds or
// milliseconds)
- inline wxTimeSpan(int hours,
- int minutes = 0,
- int seconds = 0,
- int milliseconds = 0);
+ inline wxTimeSpan(long hours,
+ long minutes = 0,
+ long seconds = 0,
+ long milliseconds = 0);
// default copy ctor is ok
wxTimeSpan& operator+=(const wxTimeSpan& diff) { return Add(diff); }
// return the difference of two timespans
- inline wxTimeSpan Substract(const wxTimeSpan& diff) const;
- // substract another timespan
- inline wxTimeSpan& Substract(const wxTimeSpan& diff);
- // substract another timespan
- wxTimeSpan& operator-=(const wxTimeSpan& diff) { return Substract(diff); }
+ inline wxTimeSpan Subtract(const wxTimeSpan& diff) const;
+ // subtract another timespan
+ inline wxTimeSpan& Subtract(const wxTimeSpan& diff);
+ // subtract another timespan
+ wxTimeSpan& operator-=(const wxTimeSpan& diff) { return Subtract(diff); }
// multiply timespan by a scalar
inline wxTimeSpan Multiply(int n) const;
// resulting text representation. Notice that only some of format
// specifiers valid for wxDateTime are valid for wxTimeSpan: hours,
// minutes and seconds make sense, but not "PM/AM" string for example.
- wxString Format(const wxChar *format = _T("%c")) const;
- // preferred date representation for the current locale
- wxString FormatDate() const { return Format(_T("%x")); }
- // preferred time representation for the current locale
- wxString FormatTime() const { return Format(_T("%X")); }
+ wxString Format(const wxChar *format = _T("%H:%M:%S")) const;
// implementation
// ------------------------------------------------------------------------
// one month to Feb, 15 - we want to get Mar, 15, of course).
//
// When adding a month to the date, all lesser components (days, hours, ...)
-// won't be changed.
+// won't be changed unless the resulting date would be invalid: for example,
+// Jan 31 + 1 month will be Feb 28, not (non existing) Feb 31.
+//
+// Because of this feature, adding and subtracting back again the same
+// wxDateSpan will *not*, in general give back the original date: Feb 28 - 1
+// month will be Jan 28, not Jan 31!
//
// wxDateSpan can be either positive or negative. They may be
// multiplied by scalars which multiply all deltas by the scalar: i.e. 2*(1
inline wxDateSpan& operator+=(const wxDateSpan& other);
// return difference of two date spans
- inline wxDateSpan Substract(const wxDateSpan& other) const;
- // substract another wxDateSpan from us
- inline wxDateSpan& Substract(const wxDateSpan& other);
- // substract another wxDateSpan from us
+ inline wxDateSpan Subtract(const wxDateSpan& other) const;
+ // subtract another wxDateSpan from us
+ inline wxDateSpan& Subtract(const wxDateSpan& other);
+ // subtract another wxDateSpan from us
inline wxDateSpan& operator-=(const wxDateSpan& other);
// return a copy of this time span with changed sign
m_days;
};
-WXDLLEXPORT_DATA(extern wxDateSpan) wxYear;
-WXDLLEXPORT_DATA(extern wxDateSpan) wxMonth;
-WXDLLEXPORT_DATA(extern wxDateSpan) wxWeek;
-WXDLLEXPORT_DATA(extern wxDateSpan) wxDay;
+// ----------------------------------------------------------------------------
+// wxDateTimeArray: array of dates.
+// ----------------------------------------------------------------------------
+
+#include "wx/dynarray.h"
+
+WX_DECLARE_EXPORTED_OBJARRAY(wxDateTime, wxDateTimeArray);
+
+// ----------------------------------------------------------------------------
+// wxDateTimeHolidayAuthority: an object of this class will decide whether a
+// given date is a holiday and is used by all functions working with "work
+// days".
+//
+// NB: the base class is an ABC, derived classes must implement the pure
+// virtual methods to work with the holidays they correspond to.
+// ----------------------------------------------------------------------------
+
+class WXDLLEXPORT wxDateTimeHolidayAuthority;
+WX_DEFINE_EXPORTED_ARRAY(wxDateTimeHolidayAuthority *, wxHolidayAuthoritiesArray);
+
+class wxDateTimeHolidaysModule;
+class WXDLLEXPORT wxDateTimeHolidayAuthority
+{
+friend class wxDateTimeHolidaysModule;
+public:
+ // returns TRUE if the given date is a holiday
+ static bool IsHoliday(const wxDateTime& dt);
+
+ // fills the provided array with all holidays in the given range, returns
+ // the number of them
+ static size_t GetHolidaysInRange(const wxDateTime& dtStart,
+ const wxDateTime& dtEnd,
+ wxDateTimeArray& holidays);
+
+ // clear the list of holiday authorities
+ static void ClearAllAuthorities();
+
+ // add a new holiday authority (the pointer will be deleted by
+ // wxDateTimeHolidayAuthority)
+ static void AddAuthority(wxDateTimeHolidayAuthority *auth);
+
+protected:
+ // this function is called to determine whether a given day is a holiday
+ virtual bool DoIsHoliday(const wxDateTime& dt) const = 0;
+
+ // this function should fill the array with all holidays between the two
+ // given dates - it is implemented in the base class, but in a very
+ // inefficient way (it just iterates over all days and uses IsHoliday() for
+ // each of them), so it must be overridden in the derived class where the
+ // base class version may be explicitly used if needed
+ //
+ // returns the number of holidays in the given range and fills holidays
+ // array
+ virtual size_t DoGetHolidaysInRange(const wxDateTime& dtStart,
+ const wxDateTime& dtEnd,
+ wxDateTimeArray& holidays) const = 0;
+
+private:
+ // all holiday authorities
+ static wxHolidayAuthoritiesArray ms_authorities;
+};
+
+// the holidays for this class are all Saturdays and Sundays
+class WXDLLEXPORT wxDateTimeWorkDays : public wxDateTimeHolidayAuthority
+{
+protected:
+ virtual bool DoIsHoliday(const wxDateTime& dt) const;
+ virtual size_t DoGetHolidaysInRange(const wxDateTime& dtStart,
+ const wxDateTime& dtEnd,
+ wxDateTimeArray& holidays) const;
+};
// ============================================================================
// inline functions implementation
inline wxDateTime WXDLLEXPORT operator-(const wxDateTime& dt,
const wxTimeSpan& ts)
{
- return dt.Substract(ts);
+ return dt.Subtract(ts);
}
inline wxDateTime WXDLLEXPORT operator+(const wxDateTime& dt,
inline wxDateTime WXDLLEXPORT operator-(const wxDateTime& dt,
const wxDateSpan& ds)
{
- return dt.Substract(ds);
+ return dt.Subtract(ds);
}
inline wxTimeSpan WXDLLEXPORT operator-(const wxDateTime& dt1,
const wxDateTime& dt2)
{
- return dt1.Substract(dt2);
+ return dt1.Subtract(dt2);
}
// comparison
: (wxDateTime::WeekDay)(wd - 1);
}
+#endif // wxUSE_DATETIME
+
#endif // _WX_DATETIME_H
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