X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f0f951faab071a72c06179224f0ab09ffc9e9b76..96bcf4f9cc8401fc499215bbe9181c351cc42d43:/include/wx/datetime.h diff --git a/include/wx/datetime.h b/include/wx/datetime.h index 74927e3c7f..688b2debf4 100644 --- a/include/wx/datetime.h +++ b/include/wx/datetime.h @@ -30,17 +30,20 @@ class WXDLLEXPORT wxDateSpan; // 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 /* - * 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 */ /* @@ -62,7 +65,7 @@ class WXDLLEXPORT wxDateSpan; wxTimeSpan + wxTimeSpan = wxTimeSpan wxDateSpan + wxDateSpan = wxDateSpan - substraction + subtraction ------------ wxDateTime - wxDateTime = wxTimeSpan wxDateTime - wxTimeSpan = wxDateTime @@ -83,7 +86,7 @@ class WXDLLEXPORT wxDateSpan; -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 @@ -91,6 +94,15 @@ class WXDLLEXPORT wxDateSpan; 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 wxDateTime&) wxDefaultDateTime; +#define wxInvalidDateTime wxDefaultDateTime + // ---------------------------------------------------------------------------- // wxDateTime represents an absolute moment in the time // ---------------------------------------------------------------------------- @@ -354,12 +366,20 @@ public: 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); @@ -379,7 +399,7 @@ public: // 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; @@ -492,6 +512,10 @@ public: // 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(); @@ -505,7 +529,10 @@ public: wxDateTime() { } // 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) @@ -540,8 +567,11 @@ public: // 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); @@ -601,17 +631,21 @@ public: // 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 @@ -621,24 +655,35 @@ public: 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 // @@ -685,16 +730,21 @@ public: // 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? @@ -710,9 +760,8 @@ public: // 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 (TRUE even for non initialized objects)? + inline bool IsValid() const { return this != &wxInvalidDateTime; } // get the broken down date/time representation in the given timezone // @@ -726,48 +775,49 @@ public: 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; @@ -791,6 +841,15 @@ public: // 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) // ------------------------------------------------------------------------ @@ -802,10 +861,10 @@ public: 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 @@ -816,14 +875,14 @@ public: 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 @@ -839,7 +898,7 @@ public: // 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); @@ -859,6 +918,12 @@ public: 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 // ------------------------------------------------------------------------ @@ -890,10 +955,6 @@ private: // 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; @@ -906,7 +967,7 @@ private: // ---------------------------------------------------------------------------- // 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. // ---------------------------------------------------------------------------- @@ -917,23 +978,23 @@ public: // ------------------------------------------------------------------------ // 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 @@ -942,10 +1003,10 @@ public: // 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 @@ -962,11 +1023,11 @@ public: 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; @@ -1039,11 +1100,7 @@ public: // 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 // ------------------------------------------------------------------------ @@ -1067,7 +1124,12 @@ private: // 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 @@ -1152,10 +1214,10 @@ public: 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 @@ -1179,10 +1241,77 @@ private: 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 @@ -1223,7 +1352,7 @@ inline wxDateTime WXDLLEXPORT operator+(const wxDateTime& dt, 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, @@ -1235,13 +1364,13 @@ 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