X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/299fcbfe98fce39cdc9ab142b65824a175542ff2..f2506310426546479e9e30a9639f0a8bbf879eb5:/include/wx/datetime.h?ds=sidebyside diff --git a/include/wx/datetime.h b/include/wx/datetime.h index c0091ce142..1d7a329e67 100644 --- a/include/wx/datetime.h +++ b/include/wx/datetime.h @@ -38,9 +38,10 @@ class WXDLLEXPORT wxDateSpan; * TODO Well, everything :-) * * + 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 */ /* @@ -65,22 +66,43 @@ class WXDLLEXPORT wxDateSpan; substraction ------------ wxDateTime - wxDateTime = wxTimeSpan + wxDateTime - wxTimeSpan = wxDateTime + wxDateTime - wxDateSpan = wxDateTime wxTimeSpan - wxTimeSpan = wxTimeSpan wxDateSpan - wxDateSpan = wxDateSpan multiplication -------------- wxTimeSpan * number = wxTimeSpan + number * wxTimeSpan = wxTimeSpan wxDateSpan * number = wxDateSpan + number * wxDateSpan = wxDateSpan unitary minus ------------- -wxTimeSpan = wxTimeSpan -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) + 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 + operator-() as a method, Neg() as synonym for it and Negate() which returns + 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 + // ---------------------------------------------------------------------------- -// This class represents an absolute moment in the time +// wxDateTime represents an absolute moment in the time // ---------------------------------------------------------------------------- class WXDLLEXPORT wxDateTime @@ -89,13 +111,16 @@ public: // types // ------------------------------------------------------------------------ - // a small unsigned integer type for storing things like seconds, days - // of the week, &c. It should be at least short (i.e. not char) to - // contain the number of milliseconds - it may also be 'int' because - // there is no size penalty associated with it in our code, we don't - // store any data in this format + // a small unsigned integer type for storing things like minutes, + // seconds &c. It should be at least short (i.e. not char) to contain + // the number of milliseconds - it may also be 'int' because there is + // no size penalty associated with it in our code, we don't store any + // data in this format typedef unsigned short wxDateTime_t; + // constants + // ------------------------------------------------------------------------ + // the timezones enum TZ { @@ -295,10 +320,22 @@ public: { Country_Unknown, // no special information for this country Country_Default, // set the default country with SetCountry() method + // or use the default country with any other // TODO add more countries (for this we must know about DST and/or // holidays for this country) + + // Western European countries: we assume that they all follow the same + // DST rules (true or false?) + Country_WesternEurope_Start, + Country_EEC = Country_WesternEurope_Start, France, + Germany, + UK, + Country_WesternEurope_End = UK, + + Russia, + USA }; @@ -320,22 +357,37 @@ public: Inv_Year = SHRT_MIN // should hold in wxDateTime_t }; + // flags for GetWeekDayName and GetMonthName + enum NameFlags + { + Name_Full = 0x01, // return full name + 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); TimeZone(wxDateTime_t offset = 0) { m_offset = offset; } - int GetOffset() const { return m_offset; } + long GetOffset() const { return m_offset; } private: // offset for this timezone from GMT in seconds - int m_offset; + long m_offset; }; // standard struct tm is limited to the years from 1900 (because @@ -345,7 +397,7 @@ 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; @@ -393,7 +445,11 @@ public: // set the current country static void SetCountry(Country country); // get the current country - static inline Country GetCountry(); + static Country GetCountry(); + + // return TRUE if the country is a West European one (in practice, + // this means that the same DST rules as for EEC apply) + static bool IsWestEuropeanCountry(Country country = Country_Default); // return the current year static int GetCurrentYear(Calendar cal = Gregorian); @@ -425,24 +481,39 @@ public: // get the full (default) or abbreviated month name in the current // locale, returns empty string on error - static wxString GetMonthName(Month month, bool abbr = FALSE); + static wxString GetMonthName(Month month, + NameFlags flags = Name_Full); // get the full (default) or abbreviated weekday name in the current // locale, returns empty string on error - static wxString GetWeekDayName(WeekDay weekday, bool abbr = FALSE); + static wxString GetWeekDayName(WeekDay weekday, + NameFlags flags = Name_Full); + + // get the AM and PM strings in the current locale (may be empty) + static void GetAmPmStrings(wxString *am, wxString *pm); + + // return TRUE if the given country uses DST for this year + static bool IsDSTApplicable(int year = Inv_Year, + Country country = Country_Default); // get the beginning of DST for this year, will return invalid object // if no DST applicable in this year. The default value of the // parameter means to take the current year. - static wxDateTime GetBeginDST(int year = Inv_Year); + static wxDateTime GetBeginDST(int year = Inv_Year, + Country country = Country_Default); // get the end of DST for this year, will return invalid object // if no DST applicable in this year. The default value of the // parameter means to take the current year. - static wxDateTime GetEndDST(int year = Inv_Year); + static wxDateTime GetEndDST(int year = Inv_Year, + Country country = Country_Default); // return the wxDateTime object for the current time static inline wxDateTime Now(); + // return the wxDateTime object for today midnight: i.e. as Now() but + // with time set to 0 + static inline wxDateTime Today(); + // constructors: you should test whether the constructor succeeded with // IsValid() function. The values Inv_Month and Inv_Year for the // parameters mean take current month and/or year values. @@ -452,7 +523,10 @@ 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) @@ -487,8 +561,11 @@ 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); @@ -548,9 +625,22 @@ 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 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 // failure. n may be positive (1..5) or negative to count from the end @@ -559,21 +649,35 @@ 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 // @@ -600,6 +704,13 @@ public: // get the Julian Day number (the fractional part specifies the time of // the day, related to noon - beware of rounding errors!) double GetJulianDayNumber() const; + double GetJDN() const { return GetJulianDayNumber(); } + + // get the Modified Julian Day number: it is equal to JDN - 2400000.5 + // and so integral MJDs correspond to the midnights (and not noons). + // MJD 0 is Nov 17, 1858 + double GetModifiedJulianDayNumber() const { return GetJDN() - 2400000.5; } + double GetMJD() const { return GetModifiedJulianDayNumber(); } // get the Rata Die number double GetRataDie() const; @@ -613,16 +724,28 @@ 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? + // + // Return value is > 0 if DST is in effect, 0 if it is not and -1 if + // 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 @@ -631,9 +754,8 @@ 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 // @@ -647,68 +769,59 @@ 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, 0 if date is + // 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(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; - // is daylight savings time in effect at this moment according to the - // rules of the specified country? - // - // Return value is > 0 if DST is in effect, 0 if it is not and -1 if - // the information is not available (this is compatible with ANSI C) - int IsDST(Country country = Country_Default) const; - // comparison (see also functions below for operator versions) // ------------------------------------------------------------------------ // returns TRUE if the two moments are strictly identical inline bool IsEqualTo(const wxDateTime& datetime) const; - // returns TRUE if the two moments are identical - inline bool operator==(const wxDateTime& datetime) const; - - // returns TRUE if the two moments are different - inline bool operator!=(const wxDateTime& datetime) const; - // returns TRUE if the date is strictly earlier than the given one inline bool IsEarlierThan(const wxDateTime& datetime) const; @@ -722,48 +835,72 @@ public: // returns TRUE if the date is in the given range inline bool IsBetween(const wxDateTime& t1, const wxDateTime& t2) const; - // date operations: for the non-const methods, the return value is this - // object itself (see also functions below for operator versions) + // 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) // ------------------------------------------------------------------------ + // return the sum of the date with a time span (positive or negative) + inline wxDateTime Add(const wxTimeSpan& diff) const; // add a time span (positive or negative) inline wxDateTime& Add(const wxTimeSpan& diff); // add a time span (positive or negative) 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& operator-=(const wxTimeSpan& diff); + // return the sum of the date with a date span + inline wxDateTime Add(const wxDateSpan& diff) const; // add a date span (positive or negative) wxDateTime& Add(const wxDateSpan& diff); // add a date span (positive or negative) 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& operator-=(const wxDateSpan& diff); - // substract a date (may result in positive or negative time span) - inline wxTimeSpan Substract(const wxDateTime& datetime) const; - // substract a date (may result in positive or negative time span) - inline wxTimeSpan operator-(const wxDateTime& datetime) const; + // return the difference between two dates + inline wxTimeSpan Substract(const wxDateTime& dt) const; - // conversion to/from text: all conversions from text return TRUE on - // success or FALSE if the date is malformed/out of supported range + // conversion to/from text: all conversions from text return the pointer to + // the next character following the date specification (i.e. the one where + // the scan had to stop) or NULL on failure. // ------------------------------------------------------------------------ // parse a string in RFC 822 format (found e.g. in mail headers and // having the form "Wed, 10 Feb 1999 19:07:07 +0100") - bool ParseRfc822Date(const wxString& date); - // parse a date/time in the given format (see strptime(3)) - bool ParseFormat(const wxString& date, const char *format = "%c"); + const wxChar *ParseRfc822Date(const wxChar* date); + // parse a date/time in the given format (see strptime(3)), fill in + // the missing (in the string) fields with the values of dateDef (by + // default, they will not change if they had valid values or will + // default to Today() otherwise) + const wxChar *ParseFormat(const wxChar *date, + const wxChar *format = _T("%c"), + 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 - // (and return FALSE if it fails) - bool ParseDateTime(const wxString& date); + const wxChar *ParseDateTime(const wxChar *datetime); + // parse a string containing the date only in "free" format (less + // flexible than ParseDateTime) + const wxChar *ParseDate(const wxChar *date); + // parse a string containing the time only in "free" format + const wxChar *ParseTime(const wxChar *time); // this function accepts strftime()-like format string (default // argument corresponds to the preferred date and time representation @@ -775,10 +912,19 @@ 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 // ------------------------------------------------------------------------ + // construct from internal representation + wxDateTime(const wxLongLong& time) { m_time = time; } + // get the internal representation inline wxLongLong GetValue() const; @@ -801,11 +947,7 @@ private: // this constant is used to transform a time_t value to the internal // representation, as time_t is in seconds and we use milliseconds it's // fixed to 1000 - static const unsigned int TIME_T_FACTOR; - - // invalid wxDateTime object - returned by all functions which return - // "wxDateTime &" on failure - static wxDateTime ms_InvDateTime; + static const long TIME_T_FACTOR; // returns TRUE if we fall in range in which we can use standard ANSI C // functions @@ -830,13 +972,24 @@ 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(long days) { return Hours(24 * days); } + static wxTimeSpan Day() { return Days(1); } + + // return the timespan for the given number of weeks + static wxTimeSpan Weeks(long days) { return Days(7 * days); } + static wxTimeSpan Week() { return Weeks(1); } // default ctor constructs the 0 time span wxTimeSpan() { } @@ -844,37 +997,38 @@ 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); - - // from internal representation - wxTimeSpan(wxLongLong diff) : m_diff(diff) { } + inline wxTimeSpan(long hours, + long minutes = 0, + long seconds = 0, + long milliseconds = 0); // default copy ctor is ok // no dtor - // arithmetics with time spans + // arithmetics with time spans (see also below for more operators) // ------------------------------------------------------------------------ + // return the sum of two timespans + inline wxTimeSpan Add(const wxTimeSpan& diff) const; // add two timespans together inline wxTimeSpan& Add(const wxTimeSpan& diff); // add two timespans together 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); } + // multiply timespan by a scalar + inline wxTimeSpan Multiply(int n) const; // multiply timespan by a scalar inline wxTimeSpan& Multiply(int n); // multiply timespan by a scalar wxTimeSpan& operator*=(int n) { return Multiply(n); } - // multiply timespan by a scalar - inline wxTimeSpan operator*(int n) const; // return this timespan with inversed sign wxTimeSpan Negate() const { return wxTimeSpan(-GetValue()); } @@ -949,6 +1103,9 @@ public: // implementation // ------------------------------------------------------------------------ + // construct from internal representation + wxTimeSpan(const wxLongLong& diff) { m_diff = diff; } + // get the internal representation wxLongLong GetValue() const { return m_diff; } @@ -965,7 +1122,12 @@ 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 substracting 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 @@ -998,15 +1160,19 @@ public: // get an object for the given number of days static wxDateSpan Days(int days) { return wxDateSpan(0, 0, 0, days); } + static wxDateSpan Day() { return Days(1); } // get an object for the given number of weeks static wxDateSpan Weeks(int weeks) { return wxDateSpan(0, 0, weeks, 0); } + static wxDateSpan Week() { return Weeks(1); } // get an object for the given number of months static wxDateSpan Months(int mon) { return wxDateSpan(0, mon, 0, 0); } + static wxDateSpan Month() { return Months(1); } // get an object for the given number of years static wxDateSpan Years(int years) { return wxDateSpan(years, 0, 0, 0); } + static wxDateSpan Year() { return Years(1); } // default copy ctor is ok @@ -1035,14 +1201,18 @@ public: // returns 7*GetWeeks() + GetDays() int GetTotalDays() const { return 7*m_weeks + m_days; } - // arithmetics + // arithmetics with date spans (see also below for more operators) // ------------------------------------------------------------------------ + // return sum of two date spans + inline wxDateSpan Add(const wxDateSpan& other) const; // add another wxDateSpan to us inline wxDateSpan& Add(const wxDateSpan& other); // add another wxDateSpan to us 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 @@ -1055,8 +1225,12 @@ public: // inverse the sign of this timespan wxDateSpan& operator-() { return Neg(); } + // return the date span proportional to this one with given factor + inline wxDateSpan Multiply(int factor) const; + // multiply all components by a (signed) number + inline wxDateSpan& Multiply(int factor); // multiply all components by a (signed) number - inline wxDateSpan& operator*=(int factor); + inline wxDateSpan& operator*=(int factor) { return Multiply(factor); } private: int m_years, @@ -1065,10 +1239,77 @@ 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_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 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 @@ -1095,60 +1336,93 @@ WXDLLEXPORT_DATA(extern wxDateSpan) wxDay; // wxDateTime operators // ---------------------------------------------------------------------------- -inline bool WXDLLEXPORT operator<(const wxDateTime &t1, const wxDateTime &t2) +// arithmetics +// ----------- + +// no need to check for validity - the member functions we call will do it + +inline wxDateTime WXDLLEXPORT operator+(const wxDateTime& dt, + const wxTimeSpan& ts) { - wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" ); + return dt.Add(ts); +} + +inline wxDateTime WXDLLEXPORT operator-(const wxDateTime& dt, + const wxTimeSpan& ts) +{ + return dt.Substract(ts); +} + +inline wxDateTime WXDLLEXPORT operator+(const wxDateTime& dt, + const wxDateSpan& ds) +{ + return dt.Add(ds); +} + +inline wxDateTime WXDLLEXPORT operator-(const wxDateTime& dt, + const wxDateSpan& ds) +{ + return dt.Substract(ds); +} + +inline wxTimeSpan WXDLLEXPORT operator-(const wxDateTime& dt1, + const wxDateTime& dt2) +{ + return dt1.Substract(dt2); +} + +// comparison +// ---------- + +inline bool WXDLLEXPORT operator<(const wxDateTime& t1, const wxDateTime& t2) +{ + wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") ); return t1.GetValue() < t2.GetValue(); } -inline bool WXDLLEXPORT operator<=(const wxDateTime &t1, const wxDateTime &t2) +inline bool WXDLLEXPORT operator<=(const wxDateTime& t1, const wxDateTime& t2) { - wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" ); + wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") ); return t1.GetValue() <= t2.GetValue(); } -inline bool WXDLLEXPORT operator>(const wxDateTime &t1, const wxDateTime &t2) +inline bool WXDLLEXPORT operator>(const wxDateTime& t1, const wxDateTime& t2) { - wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" ); + wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") ); return t1.GetValue() > t2.GetValue(); } -inline bool WXDLLEXPORT operator>=(const wxDateTime &t1, const wxDateTime &t2) +inline bool WXDLLEXPORT operator>=(const wxDateTime& t1, const wxDateTime& t2) { - wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" ); + wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") ); return t1.GetValue() >= t2.GetValue(); } -inline bool WXDLLEXPORT operator==(const wxDateTime &t1, const wxDateTime &t2) +inline bool WXDLLEXPORT operator==(const wxDateTime& t1, const wxDateTime& t2) { - wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" ); + wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") ); return t1.GetValue() == t2.GetValue(); } -inline bool WXDLLEXPORT operator!=(const wxDateTime &t1, const wxDateTime &t2) +inline bool WXDLLEXPORT operator!=(const wxDateTime& t1, const wxDateTime& t2) { - wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" ); + wxASSERT_MSG( t1.IsValid() && t2.IsValid(), _T("invalid wxDateTime") ); return t1.GetValue() != t2.GetValue(); } -inline wxTimeSpan WXDLLEXPORT operator-(const wxDateTime &t1, - const wxDateTime &t2) -{ - wxASSERT_MSG( t1.IsValid() && t2.IsValid(), "invalid wxDateTime" ); - - return wxTimeSpan(t1.GetValue() - t2.GetValue()); -} - // ---------------------------------------------------------------------------- // wxTimeSpan operators // ---------------------------------------------------------------------------- +// arithmetics +// ----------- + inline wxTimeSpan WXDLLEXPORT operator+(const wxTimeSpan& ts1, const wxTimeSpan& ts2) { @@ -1161,6 +1435,19 @@ inline wxTimeSpan WXDLLEXPORT operator-(const wxTimeSpan& ts1, return wxTimeSpan(ts1.GetValue() - ts2.GetValue()); } +inline wxTimeSpan WXDLLEXPORT operator*(const wxTimeSpan& ts, int n) +{ + return wxTimeSpan(ts).Multiply(n); +} + +inline wxTimeSpan WXDLLEXPORT operator*(int n, const wxTimeSpan& ts) +{ + return wxTimeSpan(ts).Multiply(n); +} + +// comparison +// ---------- + inline bool WXDLLEXPORT operator<(const wxTimeSpan &t1, const wxTimeSpan &t2) { return t1.GetValue() < t2.GetValue(); @@ -1195,13 +1482,77 @@ inline bool WXDLLEXPORT operator!=(const wxTimeSpan &t1, const wxTimeSpan &t2) // wxDateSpan // ---------------------------------------------------------------------------- -inline WXDLLEXPORT wxDateSpan operator+(const wxDateSpan& rt1, - const wxDateSpan& rt2) +// arithmetics +// ----------- + +inline WXDLLEXPORT wxDateSpan operator+(const wxDateSpan& ds1, + const wxDateSpan& ds2) +{ + return wxDateSpan(ds1.GetYears() + ds2.GetYears(), + ds1.GetMonths() + ds2.GetMonths(), + ds1.GetWeeks() + ds2.GetWeeks(), + ds1.GetDays() + ds2.GetDays()); +} + +inline WXDLLEXPORT wxDateSpan operator-(const wxDateSpan& ds1, + const wxDateSpan& ds2) +{ + return wxDateSpan(ds1.GetYears() - ds2.GetYears(), + ds1.GetMonths() - ds2.GetMonths(), + ds1.GetWeeks() - ds2.GetWeeks(), + ds1.GetDays() - ds2.GetDays()); +} + +inline WXDLLEXPORT wxDateSpan operator*(const wxDateSpan& ds, int n) +{ + return wxDateSpan(ds).Multiply(n); +} + +inline WXDLLEXPORT wxDateSpan operator*(int n, const wxDateSpan& ds) +{ + return wxDateSpan(ds).Multiply(n); +} + +// ============================================================================ +// other helper functions +// ============================================================================ + +// ---------------------------------------------------------------------------- +// iteration helpers: can be used to write a for loop over enum variable like +// this: +// for ( m = wxDateTime::Jan; m < wxDateTime::Inv_Month; wxNextMonth(m) ) +// ---------------------------------------------------------------------------- + +inline WXDLLEXPORT void wxNextMonth(wxDateTime::Month& m) { - return wxDateSpan(rt1.GetYears() + rt2.GetYears(), - rt1.GetMonths() + rt2.GetMonths(), - rt1.GetWeeks() + rt2.GetWeeks(), - rt1.GetDays() + rt2.GetDays()); + wxASSERT_MSG( m < wxDateTime::Inv_Month, _T("invalid month") ); + + // no wrapping or the for loop above would never end! + m = (wxDateTime::Month)(m + 1); +} + +inline WXDLLEXPORT void wxPrevMonth(wxDateTime::Month& m) +{ + wxASSERT_MSG( m < wxDateTime::Inv_Month, _T("invalid month") ); + + m = m == wxDateTime::Jan ? wxDateTime::Inv_Month + : (wxDateTime::Month)(m - 1); +} + +inline WXDLLEXPORT void wxNextWDay(wxDateTime::WeekDay& wd) +{ + wxASSERT_MSG( wd < wxDateTime::Inv_WeekDay, _T("invalid week day") ); + + // no wrapping or the for loop above would never end! + wd = (wxDateTime::WeekDay)(wd + 1); +} + +inline WXDLLEXPORT void wxPrevWDay(wxDateTime::WeekDay& wd) +{ + wxASSERT_MSG( wd < wxDateTime::Inv_WeekDay, _T("invalid week day") ); + + wd = wd == wxDateTime::Sun ? wxDateTime::Inv_WeekDay + : (wxDateTime::WeekDay)(wd - 1); } #endif // _WX_DATETIME_H