support SDK < 10.6, fixes #14902

[wxWidgets.git] / include / wx / datetime.h

diff --git a/include/wx/datetime.h b/include/wx/datetime.h
index 5aac2b16d40046d8ee11a11bf2f9ffe7ba78ce70..5b6804709a39982e8944acb9ffc649b0477e9e24 100644 (file)
--- a/include/wx/datetime.h
+++ b/include/wx/datetime.h
@@ -17,19 +17,23 @@
 
 #if wxUSE_DATETIME
 
 
 #if wxUSE_DATETIME
 

-#ifndef __WXWINCE__
-#include <time.h>
+#ifdef __WXWINCE__
+    #include "wx/msw/wince/time.h"

 #else
 #else

-#include "wx/msw/wince/time.h"
-#endif
+    #include <time.h>
+#endif // OS

 
 #include <limits.h>             // for INT_MIN
 
 #include "wx/longlong.h"
 
 #include <limits.h>             // for INT_MIN
 
 #include "wx/longlong.h"

+#include "wx/anystr.h"

 
 class WXDLLIMPEXP_FWD_BASE wxDateTime;
 class WXDLLIMPEXP_FWD_BASE wxTimeSpan;
 class WXDLLIMPEXP_FWD_BASE wxDateSpan;
 
 class WXDLLIMPEXP_FWD_BASE wxDateTime;
 class WXDLLIMPEXP_FWD_BASE wxTimeSpan;
 class WXDLLIMPEXP_FWD_BASE wxDateSpan;

+#ifdef __WINDOWS__
+struct _SYSTEMTIME;
+#endif

 
 #include "wx/dynarray.h"
 
 
 #include "wx/dynarray.h"
 


@@ -49,27 +53,6 @@ class WXDLLIMPEXP_FWD_BASE wxDateSpan;
  *   5. wxDateTimeHolidayAuthority for Easter and other christian feasts
  */
 
  *   5. wxDateTimeHolidayAuthority for Easter and other christian feasts
  */
 

-/* Two wrapper functions for thread safety */
-#ifdef HAVE_LOCALTIME_R
-#define wxLocaltime_r localtime_r
-#else
-WXDLLIMPEXP_BASE 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
-WXDLLIMPEXP_BASE 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:
 
 /*
   The three (main) classes declared in this header represent:
 


@@ -124,12 +107,25 @@ WXDLLIMPEXP_BASE struct tm *wxGmtime_r(const time_t*, struct tm*);
 // wxInvalidDateTime)
 class WXDLLIMPEXP_FWD_BASE wxDateTime;
 
 // wxInvalidDateTime)
 class WXDLLIMPEXP_FWD_BASE wxDateTime;
 

-extern WXDLLIMPEXP_DATA_BASE(const char *) wxDefaultDateTimeFormat;
-extern WXDLLIMPEXP_DATA_BASE(const char *) wxDefaultTimeSpanFormat;
+extern WXDLLIMPEXP_DATA_BASE(const char) wxDefaultDateTimeFormat[];
+extern WXDLLIMPEXP_DATA_BASE(const char) wxDefaultTimeSpanFormat[];

 extern WXDLLIMPEXP_DATA_BASE(const wxDateTime) wxDefaultDateTime;
 
 #define wxInvalidDateTime wxDefaultDateTime
 
 extern WXDLLIMPEXP_DATA_BASE(const wxDateTime) wxDefaultDateTime;
 
 #define wxInvalidDateTime wxDefaultDateTime
 

+
+// ----------------------------------------------------------------------------
+// conditional compilation
+// ----------------------------------------------------------------------------
+
+// if configure detected strftime(), we have it too
+#ifdef HAVE_STRFTIME
+    #define wxHAS_STRFTIME
+// suppose everyone else has strftime except Win CE unless VC8 is used
+#elif !defined(__WXWINCE__) || defined(__VISUALC8__)
+    #define wxHAS_STRFTIME
+#endif
+

 // ----------------------------------------------------------------------------
 // wxDateTime represents an absolute moment in the time
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxDateTime represents an absolute moment in the time
 // ----------------------------------------------------------------------------


@@ -156,7 +152,7 @@ public:
         // the time in the current time zone
         Local,
 
         // the time in the current time zone
         Local,
 

-        // zones from GMT (= Greenwhich Mean Time): they're guaranteed to be
+        // zones from GMT (= Greenwich Mean Time): they're guaranteed to be

         // consequent numbers, so writing something like `GMT0 + offset' is
         // safe if abs(offset) <= 12
 
         // consequent numbers, so writing something like `GMT0 + offset' is
         // safe if abs(offset) <= 12
 


@@ -230,7 +226,7 @@ public:
         // adoption of the Gregorian calendar (see IsGregorian())
         //
         // All data and comments taken verbatim from "The Calendar FAQ (v 2.0)"
         // adoption of the Gregorian calendar (see IsGregorian())
         //
         // All data and comments taken verbatim from "The Calendar FAQ (v 2.0)"

-        // by Claus Tøndering, http://www.pip.dknet.dk/~c-t/calendar.html
+        // by Claus Tøndering, http://www.pip.dknet.dk/~c-t/calendar.html

         // except for the comments "we take".
         //
         // Symbol "->" should be read as "was followed by" in the comments
         // except for the comments "we take".
         //
         // Symbol "->" should be read as "was followed by" in the comments


@@ -412,7 +408,7 @@ public:
     // helper classes
     // ------------------------------------------------------------------------
 
     // helper classes
     // ------------------------------------------------------------------------
 

-        // a class representing a time zone: basicly, this is just an offset
+        // a class representing a time zone: basically, this is just an offset

         // (in seconds) from GMT
     class WXDLLIMPEXP_BASE TimeZone
     {
         // (in seconds) from GMT
     class WXDLLIMPEXP_BASE TimeZone
     {


@@ -445,7 +441,9 @@ public:
         //     instead of modifying the member fields directly!
     struct WXDLLIMPEXP_BASE Tm
     {
         //     instead of modifying the member fields directly!
     struct WXDLLIMPEXP_BASE Tm
     {

-        wxDateTime_t msec, sec, min, hour, mday;
+        wxDateTime_t msec, sec, min, hour,
+                     mday,  // Day of the month in 1..31 range.
+                     yday;  // Day of the year in 0..365 range.

         Month mon;
         int year;
 
         Month mon;
         int year;
 


@@ -480,9 +478,10 @@ public:
         // the timezone we correspond to
         TimeZone m_tz;
 
         // the timezone we correspond to
         TimeZone m_tz;
 

-        // these values can't be accessed directly because they're not always
-        // computed and we calculate them on demand
-        wxDateTime_t wday, yday;
+        // This value can only be accessed via GetWeekDay() and not directly
+        // because it's not always computed when creating this object and may
+        // need to be calculated on demand.
+        wxDateTime_t wday;

     };
 
     // static methods
     };
 
     // static methods


@@ -525,16 +524,25 @@ public:
                                         int year = Inv_Year,
                                         Calendar cal = Gregorian);
 
                                         int year = Inv_Year,
                                         Calendar cal = Gregorian);
 

+

         // get the full (default) or abbreviated month name in the current
         // locale, returns empty string on error
     static wxString GetMonthName(Month month,
                                  NameFlags flags = Name_Full);
 
         // get the full (default) or abbreviated month name in the current
         // locale, returns empty string on error
     static wxString GetMonthName(Month month,
                                  NameFlags flags = Name_Full);
 

+        // get the standard English full (default) or abbreviated month name
+    static wxString GetEnglishMonthName(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,
                                    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,
                                    NameFlags flags = Name_Full);
 

+        // get the standard English full (default) or abbreviated weekday name
+    static wxString GetEnglishWeekDayName(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);
 
         // get the AM and PM strings in the current locale (may be empty)
     static void GetAmPmStrings(wxString *am, wxString *pm);
 


@@ -598,6 +606,12 @@ public:
                       wxDateTime_t minute = 0,
                       wxDateTime_t second = 0,
                       wxDateTime_t millisec = 0);
                       wxDateTime_t minute = 0,
                       wxDateTime_t second = 0,
                       wxDateTime_t millisec = 0);

+#ifdef __WINDOWS__
+    wxDateTime(const struct _SYSTEMTIME& st)
+    {
+        SetFromMSWSysTime(st);
+    }
+#endif

 
         // default copy ctor ok
 
 
         // default copy ctor ok
 


@@ -679,7 +693,7 @@ public:
         // default assignment operator is ok
 
     // calendar calculations (functions which set the date only leave the time
         // default assignment operator is ok
 
     // calendar calculations (functions which set the date only leave the time

-    // unchanged, e.g. don't explictly zero it): SetXXX() functions modify the
+    // unchanged, e.g. don't explicitly zero it): SetXXX() functions modify the

     // object itself, GetXXX() ones return a new object.
     // ------------------------------------------------------------------------
 
     // object itself, GetXXX() ones return a new object.
     // ------------------------------------------------------------------------
 


@@ -697,7 +711,7 @@ public:
     wxDateTime& SetToPrevWeekDay(WeekDay weekday);
     inline wxDateTime GetPrevWeekDay(WeekDay weekday) const;
 
     wxDateTime& SetToPrevWeekDay(WeekDay weekday);
     inline wxDateTime GetPrevWeekDay(WeekDay weekday) const;
 

-        // set to Nth occurence of given weekday in the given month of the
+        // set to Nth occurrence 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
         // of the month (see helper function SetToLastWeekDay())
         // 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
         // of the month (see helper function SetToLastWeekDay())


@@ -912,6 +926,20 @@ public:
         // pack the date in DOS format
     unsigned long GetAsDOS() const;
 
         // pack the date in DOS format
     unsigned long GetAsDOS() const;
 

+    // SYSTEMTIME format
+    // ------------------------------------------------------------------------
+#ifdef __WINDOWS__
+    // convert SYSTEMTIME to wxDateTime
+    wxDateTime& SetFromMSWSysTime(const struct _SYSTEMTIME& st);
+
+    // convert wxDateTime to SYSTEMTIME
+    void GetAsMSWSysTime(struct _SYSTEMTIME* st) const;
+
+    // same as above but only take date part into account, time is always zero
+    wxDateTime& SetFromMSWSysDate(const struct _SYSTEMTIME& st);
+    void GetAsMSWSysDate(struct _SYSTEMTIME* st) const;
+#endif // __WINDOWS__
+

     // comparison (see also functions below for operator versions)
     // ------------------------------------------------------------------------
 
     // comparison (see also functions below for operator versions)
     // ------------------------------------------------------------------------
 


@@ -942,37 +970,37 @@ public:
 
     inline bool operator<(const wxDateTime& dt) const
     {
 
     inline bool operator<(const wxDateTime& dt) const
     {

-        wxASSERT_MSG( IsValid() && dt.IsValid(), _T("invalid wxDateTime") );
+        wxASSERT_MSG( IsValid() && dt.IsValid(), wxT("invalid wxDateTime") );

         return GetValue() < dt.GetValue();
     }
 
     inline bool operator<=(const wxDateTime& dt) const
     {
         return GetValue() < dt.GetValue();
     }
 
     inline bool operator<=(const wxDateTime& dt) const
     {

-        wxASSERT_MSG( IsValid() && dt.IsValid(), _T("invalid wxDateTime") );
+        wxASSERT_MSG( IsValid() && dt.IsValid(), wxT("invalid wxDateTime") );

         return GetValue() <= dt.GetValue();
     }
 
     inline bool operator>(const wxDateTime& dt) const
     {
         return GetValue() <= dt.GetValue();
     }
 
     inline bool operator>(const wxDateTime& dt) const
     {

-        wxASSERT_MSG( IsValid() && dt.IsValid(), _T("invalid wxDateTime") );
+        wxASSERT_MSG( IsValid() && dt.IsValid(), wxT("invalid wxDateTime") );

         return GetValue() > dt.GetValue();
     }
 
     inline bool operator>=(const wxDateTime& dt) const
     {
         return GetValue() > dt.GetValue();
     }
 
     inline bool operator>=(const wxDateTime& dt) const
     {

-        wxASSERT_MSG( IsValid() && dt.IsValid(), _T("invalid wxDateTime") );
+        wxASSERT_MSG( IsValid() && dt.IsValid(), wxT("invalid wxDateTime") );

         return GetValue() >= dt.GetValue();
     }
 
     inline bool operator==(const wxDateTime& dt) const
     {
         return GetValue() >= dt.GetValue();
     }
 
     inline bool operator==(const wxDateTime& dt) const
     {

-        wxASSERT_MSG( IsValid() && dt.IsValid(), _T("invalid wxDateTime") );
+        wxASSERT_MSG( IsValid() && dt.IsValid(), wxT("invalid wxDateTime") );

         return GetValue() == dt.GetValue();
     }
 
     inline bool operator!=(const wxDateTime& dt) const
     {
         return GetValue() == dt.GetValue();
     }
 
     inline bool operator!=(const wxDateTime& dt) const
     {

-        wxASSERT_MSG( IsValid() && dt.IsValid(), _T("invalid wxDateTime") );
+        wxASSERT_MSG( IsValid() && dt.IsValid(), wxT("invalid wxDateTime") );

         return GetValue() != dt.GetValue();
     }
 
         return GetValue() != dt.GetValue();
     }
 


@@ -1035,171 +1063,195 @@ public:
     inline wxTimeSpan Subtract(const wxDateTime& dt) const;
     inline wxTimeSpan operator-(const wxDateTime& dt2) const;
 
     inline wxTimeSpan Subtract(const wxDateTime& dt) const;
     inline wxTimeSpan operator-(const wxDateTime& dt2) 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
-    // the scan had to stop) or NULL on failure; for the versions taking
-    // wxString or wxCStrData, we don't know if the user code needs char* or
-    // wchar_t* pointer and so we return char* one for compatibility with the
-    // existing ANSI code and also return iterator in another output parameter
-    // (it will be equal to end if the entire string was parsed)
+    wxDateSpan DiffAsDateSpan(const wxDateTime& dt) const;
+
+    // conversion to/from text

     // ------------------------------------------------------------------------
 
     // ------------------------------------------------------------------------
 

+    // all conversions functions return true to indicate whether parsing
+    // succeeded or failed and fill in the provided end iterator, which must
+    // not be NULL, with the location of the character where the parsing
+    // stopped (this will be end() of the passed string if everything was
+    // parsed)
+

         // 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")
         // 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")

-    const char *ParseRfc822Date(const wxString& date,
-                                wxString::const_iterator *end = NULL);
-    const char *ParseRfc822Date(const wxCStrData& date,
-                                wxString::const_iterator *end = NULL)
-    {
-        return ParseRfc822Date(date.AsString(), end);
-    }
-
-    const wchar_t *ParseRfc822Date(const wchar_t* date)
-    {
-        return ReturnEndAsWidePtr(&wxDateTime::ParseRfc822Date, date);
-    }
-
-    const char *ParseRfc822Date(const char* date)
-    {
-        return ParseRfc822Date(wxString(date));
-    }
+    bool ParseRfc822Date(const wxString& date,
+                         wxString::const_iterator *end);

 
         // 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)
 
         // 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 char *ParseFormat(const wxString& date,
-                            const wxString& format = wxDefaultDateTimeFormat,
-                            const wxDateTime& dateDef = wxDefaultDateTime,
-                            wxString::const_iterator *end = NULL);
-
-    const char *ParseFormat(const wxString& date,
-                            const char *format = wxDefaultDateTimeFormat,
-                            const wxDateTime& dateDef = wxDefaultDateTime,
-                            wxString::const_iterator *end = NULL)
-    {
-        return ParseFormat(date, wxString(format), dateDef, end);
-    }
-
-    const char *ParseFormat(const wxString& date,
-                            const wxString& format = wxDefaultDateTimeFormat,
-                            wxString::const_iterator *end = NULL)
+    bool ParseFormat(const wxString& date,
+                     const wxString& format,
+                     const wxDateTime& dateDef,
+                     wxString::const_iterator *end);
+
+    bool ParseFormat(const wxString& date,
+                     const wxString& format,
+                     wxString::const_iterator *end)

     {
         return ParseFormat(date, format, wxDefaultDateTime, end);
     }
 
     {
         return ParseFormat(date, format, wxDefaultDateTime, end);
     }
 

-    const char *ParseFormat(const wxCStrData& date,
-                            const wxString& format = wxDefaultDateTimeFormat,
-                            const wxDateTime& dateDef = wxDefaultDateTime,
-                            wxString::const_iterator *end = NULL)
+    bool ParseFormat(const wxString& date,
+                     wxString::const_iterator *end)

     {
     {

-        return ParseFormat(date.AsString(), format, dateDef, end);
+        return ParseFormat(date, wxDefaultDateTimeFormat, wxDefaultDateTime, end);

     }
 
     }
 

-    const wchar_t *ParseFormat(const wchar_t *date,
-                               const wxString& format = wxDefaultDateTimeFormat,
-                               const wxDateTime& dateDef = wxDefaultDateTime)
+        // parse a string containing date, time or both in ISO 8601 format
+        //
+        // notice that these functions are new in wx 3.0 and so we don't
+        // provide compatibility overloads for them
+    bool ParseISODate(const wxString& date)

     {
     {

-        const wxString datestr(date);

         wxString::const_iterator end;
         wxString::const_iterator end;

-        if ( !ParseFormat(datestr, format, dateDef, &end) )
-            return NULL;
-
-        return date + (end - datestr.begin());
+        return ParseFormat(date, wxS("%Y-%m-%d"), &end) && end == date.end();

     }
 
     }
 

-    const char *ParseFormat(const char *date,
-                            const wxString& format = L"%c",
-                            const wxDateTime& dateDef = wxDefaultDateTime)
+    bool ParseISOTime(const wxString& time)

     {
     {

-        return ParseFormat(wxString(date), format, dateDef);
+        wxString::const_iterator end;
+        return ParseFormat(time, wxS("%H:%M:%S"), &end) && end == time.end();

     }
 
     }
 

-    const char *ParseFormat(const char *date,
-                            const char *format = wxDefaultDateTimeFormat,
-                            const wxDateTime& dateDef = wxDefaultDateTime)
+    bool ParseISOCombined(const wxString& datetime, char sep = 'T')

     {
     {

-        return ParseFormat(wxString(date), wxString(format), dateDef);
+        wxString::const_iterator end;
+        const wxString fmt = wxS("%Y-%m-%d") + wxString(sep) + wxS("%H:%M:%S");
+        return ParseFormat(datetime, fmt, &end) && end == datetime.end();

     }
 
         // parse a string containing the date/time in "free" format, this
         // function will try to make an educated guess at the string contents
     }
 
         // parse a string containing the date/time in "free" format, this
         // function will try to make an educated guess at the string contents

-    const char *ParseDateTime(const wxString& datetime,
-                              wxString::const_iterator *end = NULL);
+    bool ParseDateTime(const wxString& datetime,
+                       wxString::const_iterator *end);

 
 

-    const char *ParseDateTime(const wxCStrData& datetime,
-                              wxString::const_iterator *end = NULL)
-    {
-        return ParseDateTime(datetime.AsString(), end);
-    }
+        // parse a string containing the date only in "free" format (less
+        // flexible than ParseDateTime)
+    bool ParseDate(const wxString& date,
+                   wxString::const_iterator *end);

 
 

-    const wchar_t *ParseDateTime(const wchar_t *datetime)
+        // parse a string containing the time only in "free" format
+    bool ParseTime(const wxString& time,
+                   wxString::const_iterator *end);
+
+
+        // this function accepts strftime()-like format string (default
+        // argument corresponds to the preferred date and time representation
+        // for the current locale) and returns the string containing the
+        // resulting text representation
+    wxString Format(const wxString& format = wxDefaultDateTimeFormat,
+                    const TimeZone& tz = Local) const;
+        // preferred date representation for the current locale
+    wxString FormatDate() const { return Format(wxS("%x")); }
+        // preferred time representation for the current locale
+    wxString FormatTime() const { return Format(wxS("%X")); }
+        // returns the string representing the date in ISO 8601 format
+        // (YYYY-MM-DD)
+    wxString FormatISODate() const { return Format(wxS("%Y-%m-%d")); }
+        // returns the string representing the time in ISO 8601 format
+        // (HH:MM:SS)
+    wxString FormatISOTime() const { return Format(wxS("%H:%M:%S")); }
+        // return the combined date time representation in ISO 8601 format; the
+        // separator character should be 'T' according to the standard but it
+        // can also be useful to set it to ' '
+    wxString FormatISOCombined(char sep = 'T') const
+        { return FormatISODate() + sep + FormatISOTime(); }
+
+
+    // backwards compatible versions of the parsing functions: they return an
+    // object representing the next character following the date specification
+    // (i.e. the one where the scan had to stop) or a special NULL-like object
+    // on failure
+    //
+    // they're not deprecated because a lot of existing code uses them and
+    // there is no particular harm in keeping them but you should still prefer
+    // the versions above in the new code
+    wxAnyStrPtr ParseRfc822Date(const wxString& date)

     {
     {

-        return ReturnEndAsWidePtr(&wxDateTime::ParseDateTime, datetime);
+        wxString::const_iterator end;
+        return ParseRfc822Date(date, &end) ? wxAnyStrPtr(date, end)
+                                           : wxAnyStrPtr();

     }
 
     }
 

-    const char *ParseDateTime(const char *datetime)
+    wxAnyStrPtr ParseFormat(const wxString& date,
+                            const wxString& format = wxDefaultDateTimeFormat,
+                            const wxDateTime& dateDef = wxDefaultDateTime)

     {
     {

-        return ParseDateTime(wxString(datetime));
+        wxString::const_iterator end;
+        return ParseFormat(date, format, dateDef, &end) ? wxAnyStrPtr(date, end)
+                                                        : wxAnyStrPtr();

     }
 
     }
 

-        // parse a string containing the date only in "free" format (less
-        // flexible than ParseDateTime)
-    const char *ParseDate(const wxString& date,
-                          wxString::const_iterator *end = NULL);
-
-    const char *ParseDate(const wxCStrData& date,
-                          wxString::const_iterator *end = NULL)
+    wxAnyStrPtr ParseDateTime(const wxString& datetime)

     {
     {

-        return ParseDate(date.AsString(), end);
+        wxString::const_iterator end;
+        return ParseDateTime(datetime, &end) ? wxAnyStrPtr(datetime, end)
+                                             : wxAnyStrPtr();

     }
 
     }
 

-    const wchar_t *ParseDate(const wchar_t *date)
+    wxAnyStrPtr ParseDate(const wxString& date)

     {
     {

-        return ReturnEndAsWidePtr(&wxDateTime::ParseDate, date);
+        wxString::const_iterator end;
+        return ParseDate(date, &end) ? wxAnyStrPtr(date, end)
+                                     : wxAnyStrPtr();

     }
 
     }
 

-    const char *ParseDate(const char *date)
+    wxAnyStrPtr ParseTime(const wxString& time)

     {
     {

-        return ParseDate(wxString(date));
+        wxString::const_iterator end;
+        return ParseTime(time, &end) ? wxAnyStrPtr(time, end)
+                                     : wxAnyStrPtr();

     }
 
     }
 

-        // parse a string containing the time only in "free" format
-    const char *ParseTime(const wxString& time,
-                          wxString::const_iterator *end = NULL);
+    // In addition to wxAnyStrPtr versions above we also must provide the
+    // overloads for C strings as we must return a pointer into the original
+    // string and not inside a temporary wxString which would have been created
+    // if the overloads above were used.
+    //
+    // And then we also have to provide the overloads for wxCStrData, as usual.
+    // Unfortunately those ones can't return anything as we don't have any
+    // sufficiently long-lived wxAnyStrPtr to return from them: any temporary
+    // strings it would point to would be destroyed when this function returns
+    // making it impossible to dereference the return value. So we just don't
+    // return anything from here which at least allows to keep compatibility
+    // with the code not testing the return value. Other uses of this method
+    // need to be converted to use one of the new bool-returning overloads
+    // above.
+    void ParseRfc822Date(const wxCStrData& date)
+        { ParseRfc822Date(wxString(date)); }
+    const char* ParseRfc822Date(const char* date);
+    const wchar_t* ParseRfc822Date(const wchar_t* date);
+
+    void ParseFormat(const wxCStrData& date,
+                     const wxString& format = wxDefaultDateTimeFormat,
+                     const wxDateTime& dateDef = wxDefaultDateTime)
+        { ParseFormat(wxString(date), format, dateDef); }
+    const char* ParseFormat(const char* date,
+                            const wxString& format = wxDefaultDateTimeFormat,
+                            const wxDateTime& dateDef = wxDefaultDateTime);
+    const wchar_t* ParseFormat(const wchar_t* date,
+                               const wxString& format = wxDefaultDateTimeFormat,
+                               const wxDateTime& dateDef = wxDefaultDateTime);

 
 

-    const char *ParseTime(const wxCStrData& time,
-                          wxString::const_iterator *end = NULL)
-    {
-        return ParseTime(time.AsString(), end);
-    }
+    void ParseDateTime(const wxCStrData& datetime)
+        { ParseDateTime(wxString(datetime)); }
+    const char* ParseDateTime(const char* datetime);
+    const wchar_t* ParseDateTime(const wchar_t* datetime);

 
 

-    const wchar_t *ParseTime(const wchar_t *time)
-    {
-        return ReturnEndAsWidePtr(&wxDateTime::ParseTime, time);
-    }
+    void ParseDate(const wxCStrData& date)
+        { ParseDate(wxString(date)); }
+    const char* ParseDate(const char* date);
+    const wchar_t* ParseDate(const wchar_t* date);

 
 

-    const char *ParseTime(const char *time)
-    {
-        return ParseTime(wxString(time));
-    }
+    void ParseTime(const wxCStrData& time)
+        { ParseTime(wxString(time)); }
+    const char* ParseTime(const char* time);
+    const wchar_t* ParseTime(const wchar_t* time);

 
 

-        // this function accepts strftime()-like format string (default
-        // argument corresponds to the preferred date and time representation
-        // for the current locale) and returns the string containing the
-        // resulting text representation
-    wxString Format(const wxString& format = wxDefaultDateTimeFormat,
-                    const TimeZone& tz = Local) 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")); }
-        // 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
     // ------------------------------------------------------------------------
 
     // implementation
     // ------------------------------------------------------------------------


@@ -1211,7 +1263,7 @@ public:
     inline wxLongLong GetValue() const;
 
     // a helper function to get the current time_t
     inline wxLongLong GetValue() const;
 
     // a helper function to get the current time_t

-    static time_t GetTimeNow() { return time((time_t *)NULL); }
+    static time_t GetTimeNow() { return time(NULL); }

 
     // another one to get the current time broken down
     static struct tm *GetTmNow()
 
     // another one to get the current time broken down
     static struct tm *GetTmNow()


@@ -1224,23 +1276,6 @@ public:
     static struct tm *GetTmNow(struct tm *tmstruct);
 
 private:
     static struct tm *GetTmNow(struct tm *tmstruct);
 
 private:

-    // helper function for defining backward-compatible wrappers for code
-    // using wchar_t* pointer instead of wxString iterators
-    typedef
-    const char *(wxDateTime::*StringMethod)(const wxString& s,
-                                            wxString::const_iterator *end);
-
-    const wchar_t *ReturnEndAsWidePtr(StringMethod func, const wchar_t *p)
-    {
-        const wxString s(p);
-        wxString::const_iterator end;
-        if ( !(this->*func)(s, &end) )
-            return NULL;
-
-        return p + (end - s.begin());
-    }
-
-

     // 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:
     // see SetCountry() and GetCountry()
     // 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:
     // see SetCountry() and GetCountry()


@@ -1385,7 +1420,7 @@ public:
         // compare two timestamps: works with the absolute values, i.e. 1
         // hour is shorter than -2 hours. Also, it will return false if the
         // timespans are equal in absolute value.
         // compare two timestamps: works with the absolute values, i.e. 1
         // hour is shorter than -2 hours. Also, it will return false if the
         // timespans are equal in absolute value.

-    bool IsShorterThan(const wxTimeSpan& t) const { return !IsLongerThan(t); }
+    bool IsShorterThan(const wxTimeSpan& t) const;

 
     inline bool operator<(const wxTimeSpan &ts) const
     {
 
     inline bool operator<(const wxTimeSpan &ts) const
     {


@@ -1544,6 +1579,8 @@ public:
     int GetYears() const { return m_years; }
         // get number of months
     int GetMonths() const { return m_months; }
     int GetYears() const { return m_years; }
         // get number of months
     int GetMonths() const { return m_months; }

+        // returns 12*GetYears() + GetMonths()
+    int GetTotalMonths() const { return 12*m_years + m_months; }

         // get number of weeks
     int GetWeeks() const { return m_weeks; }
         // get number of days
         // get number of weeks
     int GetWeeks() const { return m_weeks; }
         // get number of days


@@ -1720,7 +1757,9 @@ protected:
 
 inline bool wxDateTime::IsInStdRange() const
 {
 
 inline bool wxDateTime::IsInStdRange() const
 {

-    return m_time >= 0l && (m_time / TIME_T_FACTOR) < LONG_MAX;
+    // currently we don't know what is the real type of time_t so prefer to err
+    // on the safe side and limit it to 32 bit values which is safe everywhere
+    return m_time >= 0l && (m_time / TIME_T_FACTOR) < wxINT32_MAX;

 }
 
 /* static */
 }
 
 /* static */


@@ -1742,9 +1781,16 @@ inline wxDateTime wxDateTime::Today()
 #if (!(defined(__VISAGECPP__) && __IBMCPP__ >= 400))
 inline wxDateTime& wxDateTime::Set(time_t timet)
 {
 #if (!(defined(__VISAGECPP__) && __IBMCPP__ >= 400))
 inline wxDateTime& wxDateTime::Set(time_t timet)
 {

-    // assign first to avoid long multiplication overflow!
-    m_time = timet - WX_TIME_BASE_OFFSET ;
-    m_time *= TIME_T_FACTOR;
+    if ( timet == (time_t)-1 )
+    {
+        m_time = wxInvalidDateTime.m_time;
+    }
+    else
+    {
+        // assign first to avoid long multiplication overflow!
+        m_time = timet - WX_TIME_BASE_OFFSET;
+        m_time *= TIME_T_FACTOR;
+    }

 
     return *this;
 }
 
     return *this;
 }


@@ -1780,7 +1826,7 @@ inline wxDateTime::wxDateTime(double jdn)
 
 inline wxDateTime& wxDateTime::Set(const Tm& tm)
 {
 
 inline wxDateTime& wxDateTime::Set(const Tm& tm)
 {

-    wxASSERT_MSG( tm.IsValid(), _T("invalid broken down date/time") );
+    wxASSERT_MSG( tm.IsValid(), wxT("invalid broken down date/time") );

 
     return Set(tm.mday, (Month)tm.mon, tm.year,
                tm.hour, tm.min, tm.sec, tm.msec);
 
     return Set(tm.mday, (Month)tm.mon, tm.year,
                tm.hour, tm.min, tm.sec, tm.msec);


@@ -1811,14 +1857,14 @@ inline wxDateTime::wxDateTime(wxDateTime_t day,
 
 inline wxLongLong wxDateTime::GetValue() const
 {
 
 inline wxLongLong wxDateTime::GetValue() const
 {

-    wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
+    wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime"));

 
     return m_time;
 }
 
 inline time_t wxDateTime::GetTicks() const
 {
 
     return m_time;
 }
 
 inline time_t wxDateTime::GetTicks() const
 {

-    wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
+    wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime"));

     if ( !IsInStdRange() )
     {
         return (time_t)-1;
     if ( !IsInStdRange() )
     {
         return (time_t)-1;


@@ -1886,21 +1932,21 @@ inline wxDateTime wxDateTime::GetYearDay(wxDateTime_t yday) const
 
 inline bool wxDateTime::IsEqualTo(const wxDateTime& datetime) const
 {
 
 inline bool wxDateTime::IsEqualTo(const wxDateTime& datetime) const
 {

-    wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
+    wxASSERT_MSG( IsValid() && datetime.IsValid(), wxT("invalid wxDateTime"));

 
     return m_time == datetime.m_time;
 }
 
 inline bool wxDateTime::IsEarlierThan(const wxDateTime& datetime) const
 {
 
     return m_time == datetime.m_time;
 }
 
 inline bool wxDateTime::IsEarlierThan(const wxDateTime& datetime) const
 {

-    wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
+    wxASSERT_MSG( IsValid() && datetime.IsValid(), wxT("invalid wxDateTime"));

 
     return m_time < datetime.m_time;
 }
 
 inline bool wxDateTime::IsLaterThan(const wxDateTime& datetime) const
 {
 
     return m_time < datetime.m_time;
 }
 
 inline bool wxDateTime::IsLaterThan(const wxDateTime& datetime) const
 {

-    wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
+    wxASSERT_MSG( IsValid() && datetime.IsValid(), wxT("invalid wxDateTime"));

 
     return m_time > datetime.m_time;
 }
 
     return m_time > datetime.m_time;
 }


@@ -1957,14 +2003,14 @@ inline bool wxDateTime::IsEqualUpTo(const wxDateTime& dt,
 
 inline wxDateTime wxDateTime::Add(const wxTimeSpan& diff) const
 {
 
 inline wxDateTime wxDateTime::Add(const wxTimeSpan& diff) const
 {

-    wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
+    wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime"));

 
     return wxDateTime(m_time + diff.GetValue());
 }
 
 inline wxDateTime& wxDateTime::Add(const wxTimeSpan& diff)
 {
 
     return wxDateTime(m_time + diff.GetValue());
 }
 
 inline wxDateTime& wxDateTime::Add(const wxTimeSpan& diff)
 {

-    wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
+    wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime"));

 
     m_time += diff.GetValue();
 
 
     m_time += diff.GetValue();
 


@@ -1978,14 +2024,14 @@ inline wxDateTime& wxDateTime::operator+=(const wxTimeSpan& diff)
 
 inline wxDateTime wxDateTime::Subtract(const wxTimeSpan& diff) const
 {
 
 inline wxDateTime wxDateTime::Subtract(const wxTimeSpan& diff) const
 {

-    wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
+    wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime"));

 
     return wxDateTime(m_time - diff.GetValue());
 }
 
 inline wxDateTime& wxDateTime::Subtract(const wxTimeSpan& diff)
 {
 
     return wxDateTime(m_time - diff.GetValue());
 }
 
 inline wxDateTime& wxDateTime::Subtract(const wxTimeSpan& diff)
 {

-    wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
+    wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime"));

 
     m_time -= diff.GetValue();
 
 
     m_time -= diff.GetValue();
 


@@ -1999,7 +2045,7 @@ inline wxDateTime& wxDateTime::operator-=(const wxTimeSpan& diff)
 
 inline wxTimeSpan wxDateTime::Subtract(const wxDateTime& datetime) const
 {
 
 inline wxTimeSpan wxDateTime::Subtract(const wxDateTime& datetime) const
 {

-    wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
+    wxASSERT_MSG( IsValid() && datetime.IsValid(), wxT("invalid wxDateTime"));

 
     return wxTimeSpan(GetValue() - datetime.GetValue());
 }
 
     return wxTimeSpan(GetValue() - datetime.GetValue());
 }


@@ -2080,9 +2126,9 @@ inline wxLongLong wxTimeSpan::GetSeconds() const
 
 inline int wxTimeSpan::GetMinutes() const
 {
 
 inline int wxTimeSpan::GetMinutes() const
 {

-    // explicit cast to int suppresses a warning with CodeWarrior and possibly
-    // others (changing the return type to long from int is impossible in 2.8)
-    return (int)((GetSeconds() / 60l).GetLo());
+    // For compatibility, this method (and the other accessors) return int,
+    // even though GetLo() actually returns unsigned long with greater range.
+    return static_cast<int>((GetSeconds() / 60l).GetLo());

 }
 
 inline int wxTimeSpan::GetHours() const
 }
 
 inline int wxTimeSpan::GetHours() const


@@ -2155,6 +2201,11 @@ inline bool wxTimeSpan::IsLongerThan(const wxTimeSpan& ts) const
     return GetValue().Abs() > ts.GetValue().Abs();
 }
 
     return GetValue().Abs() > ts.GetValue().Abs();
 }
 

+inline bool wxTimeSpan::IsShorterThan(const wxTimeSpan& ts) const
+{
+    return GetValue().Abs() < ts.GetValue().Abs();
+}
+

 // ----------------------------------------------------------------------------
 // wxDateSpan
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxDateSpan
 // ----------------------------------------------------------------------------