X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/42841dfcaddc6045ffc618acbb620b1fde1bc618..34eeb223b428c2e9ec90d88348e7e62dfeb1cb65:/src/common/datetime.cpp diff --git a/src/common/datetime.cpp b/src/common/datetime.cpp index 1d85ebbbd8..4e68a76cd2 100644 --- a/src/common/datetime.cpp +++ b/src/common/datetime.cpp @@ -1,5 +1,5 @@ /////////////////////////////////////////////////////////////////////////////// -// Name: wx/datetime.h +// Name: src/common/datetime.cpp // Purpose: implementation of time/date related classes // Author: Vadim Zeitlin // Modified by: @@ -16,6 +16,10 @@ // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// +// TODO: for $DEITY sake, someone please fix the #ifdef __WXWINCE__ everywhere, +// the proper way to do it is to implement (subset of) wxStrftime() for +// CE instead of this horror!! + /* * Implementation notes: * @@ -52,10 +56,6 @@ // headers // ---------------------------------------------------------------------------- -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) - #pragma implementation "datetime.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -66,19 +66,29 @@ #if !defined(wxUSE_DATETIME) || wxUSE_DATETIME #ifndef WX_PRECOMP + #ifdef __WXMSW__ + #include "wx/msw/wrapwin.h" + #endif #include "wx/string.h" #include "wx/log.h" + #include "wx/intl.h" + #include "wx/stopwatch.h" // for wxGetLocalTimeMillis() + #include "wx/module.h" #endif // WX_PRECOMP -#include "wx/intl.h" #include "wx/thread.h" #include "wx/tokenzr.h" -#include "wx/module.h" #include +#ifdef __WINDOWS__ + #include + #ifndef __WXWINCE__ + #include + #endif +#endif + #include "wx/datetime.h" -#include "wx/stopwatch.h" // for wxGetLocalTimeMillis() const long wxDateTime::TIME_T_FACTOR = 1000l; @@ -115,12 +125,26 @@ wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter , wxFromStringCon #undef HAVE_STRPTIME #endif // broken strptime() +#if defined(HAVE_STRPTIME) && defined(__DARWIN__) && defined(_MSL_USING_MW_C_HEADERS) && _MSL_USING_MW_C_HEADERS + // configure detects strptime as linkable because it's in the OS X + // System library but MSL headers don't declare it. + +// char *strptime(const char *, const char *, struct tm *); + // However, we DON'T want to just provide it here because we would + // crash and/or overwrite data when strptime from OS X tries + // to fill in MW's struct tm which is two fields shorter (no TZ stuff) + // So for now let's just say we don't have strptime + #undef HAVE_STRPTIME +#endif + #if defined(__MWERKS__) && wxUSE_UNICODE #include #endif #if !defined(WX_TIMEZONE) && !defined(WX_GMTOFF_IN_TM) - #if defined(__BORLANDC__) || defined(__MINGW32__) || defined(__VISAGECPP__) + #if defined(__WXPALMOS__) + #define WX_GMTOFF_IN_TM + #elif defined(__BORLANDC__) || defined(__MINGW32__) || defined(__VISAGECPP__) #define WX_TIMEZONE _timezone #elif defined(__MWERKS__) long wxmw_timezone = 28800; @@ -147,18 +171,43 @@ wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter , wxFromStringCon #endif #endif // !WX_TIMEZONE && !WX_GMTOFF_IN_TM +#if (!defined(HAVE_LOCALTIME_R) || !defined(HAVE_GMTIME_R)) && wxUSE_THREADS && !defined(__WINDOWS__) +static wxMutex timeLock; +#endif + +#ifndef HAVE_LOCALTIME_R +struct tm *wxLocaltime_r(const time_t* ticks, struct tm* temp) +{ +#if wxUSE_THREADS && !defined(__WINDOWS__) + // No need to waste time with a mutex on windows since it's using + // thread local storage for localtime anyway. + wxMutexLocker locker(timeLock); +#endif + memcpy(temp, localtime(ticks), sizeof(struct tm)); + return temp; +} +#endif + +#ifndef HAVE_GMTIME_R +struct tm *wxGmtime_r(const time_t* ticks, struct tm* temp) +{ +#if wxUSE_THREADS && !defined(__WINDOWS__) + // No need to waste time with a mutex on windows since it's + // using thread local storage for gmtime anyway. + wxMutexLocker locker(timeLock); +#endif + memcpy(temp, gmtime(ticks), sizeof(struct tm)); + return temp; +} +#endif + // ---------------------------------------------------------------------------- // macros // ---------------------------------------------------------------------------- // debugging helper: just a convenient replacement of wxCHECK() -#define wxDATETIME_CHECK(expr, msg) \ - if ( !(expr) ) \ - { \ - wxFAIL_MSG(msg); \ - *this = wxInvalidDateTime; \ - return *this; \ - } +#define wxDATETIME_CHECK(expr, msg) \ + wxCHECK2_MSG(expr, *this = wxInvalidDateTime; return *this, msg) // ---------------------------------------------------------------------------- // private classes @@ -209,11 +258,14 @@ static const long MILLISECONDS_PER_DAY = 86400000l; // (i.e. JDN(Jan 1, 1970) = 2440587.5) static const long EPOCH_JDN = 2440587l; +// used only in asserts +#ifdef __WXDEBUG__ // the date of JDN -0.5 (as we don't work with fractional parts, this is the // reference date for us) is Nov 24, 4714BC static const int JDN_0_YEAR = -4713; static const int JDN_0_MONTH = wxDateTime::Nov; static const int JDN_0_DAY = 24; +#endif // __WXDEBUG__ // the constants used for JDN calculations static const long JDN_OFFSET = 32046l; @@ -233,6 +285,9 @@ static const wxDateTime::wxDateTime_t gs_cumulatedDays[2][MONTHS_IN_YEAR] = // global data // ---------------------------------------------------------------------------- +const wxChar * wxDefaultDateTimeFormat = wxT("%c"); +const wxChar * wxDefaultTimeSpanFormat = wxT("%H:%M:%S"); + // in the fine tradition of ANSI C we use our equivalent of (time_t)-1 to // indicate an invalid wxDateTime object const wxDateTime wxDefaultDateTime; @@ -274,32 +329,32 @@ wxDateTime::wxDateTime_t GetNumOfDaysInMonth(int year, wxDateTime::Month month) // (in seconds) static int GetTimeZone() { -#ifdef WX_GMTOFF_IN_TM // set to true when the timezone is set static bool s_timezoneSet = false; static long gmtoffset = LONG_MAX; // invalid timezone - // ensure that the timezone variable is set by calling localtime + // ensure that the timezone variable is set by calling wxLocaltime_r if ( !s_timezoneSet ) { - // just call localtime() instead of figuring out whether this system - // supports tzset(), _tzset() or something else + // just call wxLocaltime_r() instead of figuring out whether this + // system supports tzset(), _tzset() or something else time_t t = 0; - struct tm *tm; + struct tm tm; - tm = localtime(&t); + wxLocaltime_r(&t, &tm); s_timezoneSet = true; +#ifdef WX_GMTOFF_IN_TM // note that GMT offset is the opposite of time zone and so to return // consistent results in both WX_GMTOFF_IN_TM and !WX_GMTOFF_IN_TM // cases we have to negate it - gmtoffset = -tm->tm_gmtoff; + gmtoffset = -tm.tm_gmtoff; +#else // !WX_GMTOFF_IN_TM + gmtoffset = WX_TIMEZONE; +#endif // WX_GMTOFF_IN_TM/!WX_GMTOFF_IN_TM } return (int)gmtoffset; -#else // !WX_GMTOFF_IN_TM - return (int)WX_TIMEZONE; -#endif // WX_GMTOFF_IN_TM/!WX_GMTOFF_IN_TM } // return the integral part of the JDN for the midnight of the given date (to @@ -342,24 +397,31 @@ static long GetTruncatedJDN(wxDateTime::wxDateTime_t day, - JDN_OFFSET; } +#ifndef __WXWINCE__ // this function is a wrapper around strftime(3) adding error checking static wxString CallStrftime(const wxChar *format, const tm* tm) { wxChar buf[4096]; + // Create temp wxString here to work around mingw/cygwin bug 1046059 + // http://sourceforge.net/tracker/?func=detail&atid=102435&aid=1046059&group_id=2435 + wxString s; + if ( !wxStrftime(buf, WXSIZEOF(buf), format, tm) ) { // buffer is too small? wxFAIL_MSG(_T("strftime() failed")); } - return wxString(buf); + s = buf; + return s; } +#endif #ifdef HAVE_STRPTIME -// glibc2 doesn't define this in the headers unless _XOPEN_SOURCE is defined -// which, unfortunately, wreaks havoc elsewhere -#if defined(__GLIBC__) && (__GLIBC__ == 2) +#if wxUSE_UNIX && !defined(HAVE_STRPTIME_DECL) + // configure detected that we had strptime() but not its declaration, + // provide it ourselves extern "C" char *strptime(const char *, const char *, struct tm *); #endif @@ -395,10 +457,11 @@ static void ReplaceDefaultYearMonthWithCurrent(int *year, wxDateTime::Month *month) { struct tm *tmNow = NULL; + struct tm tmstruct; if ( *year == wxDateTime::Inv_Year ) { - tmNow = wxDateTime::GetTmNow(); + tmNow = wxDateTime::GetTmNow(&tmstruct); *year = 1900 + tmNow->tm_year; } @@ -406,7 +469,7 @@ static void ReplaceDefaultYearMonthWithCurrent(int *year, if ( *month == wxDateTime::Inv_Month ) { if ( !tmNow ) - tmNow = wxDateTime::GetTmNow(); + tmNow = wxDateTime::GetTmNow(&tmstruct); *month = (wxDateTime::Month)tmNow->tm_mon; } @@ -487,6 +550,13 @@ static wxDateTime::WeekDay GetWeekDayFromName(const wxString& name, int flags) return wd; } +/* static */ +struct tm *wxDateTime::GetTmNow(struct tm *tmstruct) +{ + time_t t = GetTimeNow(); + return wxLocaltime_r(&t, tmstruct); +} + // scans all digits (but no more than len) and returns the resulting number static bool GetNumericToken(size_t len, const wxChar*& p, unsigned long *number) { @@ -500,7 +570,7 @@ static bool GetNumericToken(size_t len, const wxChar*& p, unsigned long *number) break; } - return !s.IsEmpty() && s.ToULong(number); + return !s.empty() && s.ToULong(number); } // scans all alphabetic characters and returns the resulting string @@ -542,8 +612,8 @@ wxDateTime::Tm::Tm(const struct tm& tm, const TimeZone& tz) mday = (wxDateTime::wxDateTime_t)tm.tm_mday; mon = (wxDateTime::Month)tm.tm_mon; year = 1900 + tm.tm_year; - wday = tm.tm_wday; - yday = tm.tm_yday; + wday = (wxDateTime::wxDateTime_t)tm.tm_wday; + yday = (wxDateTime::wxDateTime_t)tm.tm_yday; } bool wxDateTime::Tm::IsValid() const @@ -559,7 +629,7 @@ void wxDateTime::Tm::ComputeWeekDay() // compute the week day from day/month/year: we use the dumbest algorithm // possible: just compute our JDN and then use the (simple to derive) // formula: weekday = (JDN + 1.5) % 7 - wday = (wxDateTime::WeekDay)(GetTruncatedJDN(mday, mon, year) + 2) % 7; + wday = (wxDateTime::wxDateTime_t)((wxDateTime::WeekDay)(GetTruncatedJDN(mday, mon, year) + 2) % 7); } void wxDateTime::Tm::AddMonths(int monDiff) @@ -656,7 +726,7 @@ wxDateTime::TimeZone::TimeZone(wxDateTime::TZ tz) case wxDateTime::A_CST: // Central Standard Time in use in Australia = UTC + 9.5 - m_offset = 60l*(9*60 + 30); + m_offset = 60l*(9*MIN_PER_HOUR + MIN_PER_HOUR/2); break; default: @@ -800,8 +870,8 @@ wxDateTime::wxDateTime_t wxDateTime::GetNumberOfDays(wxDateTime::Month month, wxString wxDateTime::GetMonthName(wxDateTime::Month month, wxDateTime::NameFlags flags) { - wxCHECK_MSG( month != Inv_Month, _T(""), _T("invalid month") ); - + wxCHECK_MSG( month != Inv_Month, wxEmptyString, _T("invalid month") ); +#ifndef __WXWINCE__ // notice that we must set all the fields to avoid confusing libc (GNU one // gets confused to a crash if we don't do this) tm tm; @@ -809,14 +879,57 @@ wxString wxDateTime::GetMonthName(wxDateTime::Month month, tm.tm_mon = month; return CallStrftime(flags == Name_Abbr ? _T("%b") : _T("%B"), &tm); +#else + wxString ret; + switch(month) + { + case Jan: + ret = (flags == Name_Abbr ? wxT("Jan"): wxT("January")); + break; + case Feb: + ret = (flags == Name_Abbr ? wxT("Feb"): wxT("Febuary")); + break; + case Mar: + ret = (flags == Name_Abbr ? wxT("Mar"): wxT("March")); + break; + case Apr: + ret = (flags == Name_Abbr ? wxT("Apr"): wxT("April")); + break; + case May: + ret = (flags == Name_Abbr ? wxT("May"): wxT("May")); + break; + case Jun: + ret = (flags == Name_Abbr ? wxT("Jun"): wxT("June")); + break; + case Jul: + ret = (flags == Name_Abbr ? wxT("Jul"): wxT("July")); + break; + case Aug: + ret = (flags == Name_Abbr ? wxT("Aug"): wxT("August")); + break; + case Sep: + ret = (flags == Name_Abbr ? wxT("Sep"): wxT("September")); + break; + case Oct: + ret = (flags == Name_Abbr ? wxT("Oct"): wxT("October")); + break; + case Nov: + ret = (flags == Name_Abbr ? wxT("Nov"): wxT("November")); + break; + case Dec: + ret = (flags == Name_Abbr ? wxT("Dec"): wxT("December")); + break; + } + return ret; +#endif } /* static */ wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday, wxDateTime::NameFlags flags) { - wxCHECK_MSG( wday != Inv_WeekDay, _T(""), _T("invalid weekday") ); - + wxCHECK_MSG( wday != Inv_WeekDay, wxEmptyString, _T("invalid weekday") ); +#ifndef __WXWINCE__ // take some arbitrary Sunday (but notice that the day should be such that // after adding wday to it below we still have a valid date, e.g. don't // take 28 here!) @@ -834,6 +947,35 @@ wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday, // ... and call strftime() return CallStrftime(flags == Name_Abbr ? _T("%a") : _T("%A"), &tm); +#else + wxString ret; + switch(wday) + { + case Sun: + ret = (flags == Name_Abbr ? wxT("Sun") : wxT("Sunday")); + break; + case Mon: + ret = (flags == Name_Abbr ? wxT("Mon") : wxT("Monday")); + break; + case Tue: + ret = (flags == Name_Abbr ? wxT("Tue") : wxT("Tuesday")); + break; + case Wed: + ret = (flags == Name_Abbr ? wxT("Wed") : wxT("Wednesday")); + break; + case Thu: + ret = (flags == Name_Abbr ? wxT("Thu") : wxT("Thursday")); + break; + case Fri: + ret = (flags == Name_Abbr ? wxT("Fri") : wxT("Friday")); + break; + case Sat: + ret = (flags == Name_Abbr ? wxT("Sat") : wxT("Saturday")); + break; + } + return ret; + +#endif } /* static */ @@ -852,7 +994,7 @@ void wxDateTime::GetAmPmStrings(wxString *am, wxString *pm) // assert, even though it is a perfectly legal use. if ( am ) { - if (wxStrftime(buffer, sizeof buffer, _T("%p"), &tm) > 0) + if (wxStrftime(buffer, sizeof(buffer)/sizeof(wxChar), _T("%p"), &tm) > 0) *am = wxString(buffer); else *am = wxString(); @@ -860,7 +1002,7 @@ void wxDateTime::GetAmPmStrings(wxString *am, wxString *pm) if ( pm ) { tm.tm_hour = 13; - if (wxStrftime(buffer, sizeof buffer, _T("%p"), &tm) > 0) + if (wxStrftime(buffer, sizeof(buffer)/sizeof(wxChar), _T("%p"), &tm) > 0) *pm = wxString(buffer); else *pm = wxString(); @@ -876,12 +1018,13 @@ void wxDateTime::GetAmPmStrings(wxString *am, wxString *pm) wxDateTime::Country wxDateTime::GetCountry() { // TODO use LOCALE_ICOUNTRY setting under Win32 - +#ifndef __WXWINCE__ if ( ms_country == Country_Unknown ) { // try to guess from the time zone name time_t t = time(NULL); - struct tm *tm = localtime(&t); + struct tm tmstruct; + struct tm *tm = wxLocaltime_r(&t, &tmstruct); wxString tz = CallStrftime(_T("%Z"), tm); if ( tz == _T("WET") || tz == _T("WEST") ) @@ -910,6 +1053,9 @@ wxDateTime::Country wxDateTime::GetCountry() ms_country = USA; } } +#else + ms_country = USA; +#endif return ms_country; } @@ -1168,16 +1314,11 @@ wxDateTime& wxDateTime::Set(const struct tm& tm) // less than timezone - try to make it work for this case if ( tm2.tm_year == 70 && tm2.tm_mon == 0 && tm2.tm_mday == 1 ) { - // add timezone to make sure that date is in range - tm2.tm_sec -= GetTimeZone(); - - timet = mktime(&tm2); - if ( timet != (time_t)-1 ) - { - timet += GetTimeZone(); - - return Set(timet); - } + return Set((time_t)( + GetTimeZone() + + tm2.tm_hour * MIN_PER_HOUR * SEC_PER_MIN + + tm2.tm_min * SEC_PER_MIN + + tm2.tm_sec)); } wxFAIL_MSG( _T("mktime() failed") ); @@ -1206,16 +1347,26 @@ wxDateTime& wxDateTime::Set(wxDateTime_t hour, _T("Invalid time in wxDateTime::Set()") ); // get the current date from system - struct tm *tm = GetTmNow(); + struct tm tmstruct; + struct tm *tm = GetTmNow(&tmstruct); + + wxDATETIME_CHECK( tm, _T("wxLocaltime_r() failed") ); - wxDATETIME_CHECK( tm, _T("localtime() failed") ); + // make a copy so it isn't clobbered by the call to mktime() below + struct tm tm1(*tm); // adjust the time - tm->tm_hour = hour; - tm->tm_min = minute; - tm->tm_sec = second; + tm1.tm_hour = hour; + tm1.tm_min = minute; + tm1.tm_sec = second; - (void)Set(*tm); + // and the DST in case it changes on this date + struct tm tm2(tm1); + mktime(&tm2); + if ( tm2.tm_isdst != tm1.tm_isdst ) + tm1.tm_isdst = tm2.tm_isdst; + + (void)Set(tm1); // and finally adjust milliseconds return SetMillisecond(millisec); @@ -1262,7 +1413,10 @@ wxDateTime& wxDateTime::Set(wxDateTime_t day, (void)Set(tm); // and finally adjust milliseconds - return SetMillisecond(millisec); + if (IsValid()) + SetMillisecond(millisec); + + return *this; } else { @@ -1287,20 +1441,9 @@ wxDateTime& wxDateTime::Set(double jdn) // EPOCH_JDN + 0.5 jdn -= EPOCH_JDN + 0.5; - jdn *= MILLISECONDS_PER_DAY; - - // JDNs always suppose an UTC date, so bring it back to local time zone - // (also see GetJulianDayNumber() implementation) - long tzDiff = GetTimeZone(); - if ( IsDST() == 1 ) - { - // FIXME: again, we suppose that DST is always one hour - tzDiff -= 3600; - } - - jdn += tzDiff*1000; // tzDiff is in seconds + m_time.Assign(jdn*MILLISECONDS_PER_DAY); - m_time.Assign(jdn); + // JDNs always are in UTC, so we don't need any adjustments for time zone return *this; } @@ -1373,7 +1516,8 @@ unsigned long wxDateTime::GetAsDOS() const { unsigned long ddt; time_t ticks = GetTicks(); - struct tm *tm = localtime(&ticks); + struct tm tmstruct; + struct tm *tm = wxLocaltime_r(&ticks, &tmstruct); long year = tm->tm_year; year -= 80; @@ -1411,14 +1555,15 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const if ( time != (time_t)-1 ) { // use C RTL functions + struct tm tmstruct; tm *tm; if ( tz.GetOffset() == -GetTimeZone() ) { // we are working with local time - tm = localtime(&time); + tm = wxLocaltime_r(&time, &tmstruct); // should never happen - wxCHECK_MSG( tm, Tm(), _T("localtime() failed") ); + wxCHECK_MSG( tm, Tm(), _T("wxLocaltime_r() failed") ); } else { @@ -1430,10 +1575,10 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const if ( time >= 0 ) #endif { - tm = gmtime(&time); + tm = wxGmtime_r(&time, &tmstruct); // should never happen - wxCHECK_MSG( tm, Tm(), _T("gmtime() failed") ); + wxCHECK_MSG( tm, Tm(), _T("wxGmtime_r() failed") ); } else { @@ -1519,14 +1664,14 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const timeOnly -= tm.msec; timeOnly /= 1000; // now we have time in seconds - tm.sec = (wxDateTime_t)(timeOnly % 60); + tm.sec = (wxDateTime_t)(timeOnly % SEC_PER_MIN); timeOnly -= tm.sec; - timeOnly /= 60; // now we have time in minutes + timeOnly /= SEC_PER_MIN; // now we have time in minutes - tm.min = (wxDateTime_t)(timeOnly % 60); + tm.min = (wxDateTime_t)(timeOnly % MIN_PER_HOUR); timeOnly -= tm.min; - tm.hour = (wxDateTime_t)(timeOnly / 60); + tm.hour = (wxDateTime_t)(timeOnly / MIN_PER_HOUR); return tm; } @@ -1667,6 +1812,7 @@ wxDateTime::SetToWeekOfYear(int year, wxDateTime_t numWeek, WeekDay wd) return dt; } +#if WXWIN_COMPATIBILITY_2_6 // use a separate function to avoid warnings about using deprecated // SetToTheWeek in GetWeek below static wxDateTime @@ -1704,6 +1850,7 @@ wxDateTime wxDateTime::GetWeek(wxDateTime_t numWeek, { return ::SetToTheWeek(GetYear(), numWeek, weekday, flags); } +#endif // WXWIN_COMPATIBILITY_2_6 wxDateTime& wxDateTime::SetToLastMonthDay(Month month, int year) @@ -1721,8 +1868,9 @@ wxDateTime& wxDateTime::SetToWeekDayInSameWeek(WeekDay weekday, WeekFlags flags) { wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); - int wdayThis = GetWeekDay(); - if ( weekday == wdayThis ) + int wdayDst = weekday, + wdayThis = GetWeekDay(); + if ( wdayDst == wdayThis ) { // nothing to do return *this; @@ -1736,21 +1884,23 @@ wxDateTime& wxDateTime::SetToWeekDayInSameWeek(WeekDay weekday, WeekFlags flags) // the logic below based on comparing weekday and wdayThis works if Sun (0) // is the first day in the week, but breaks down for Monday_First case so // we adjust the week days in this case - if( flags == Monday_First ) + if ( flags == Monday_First ) { if ( wdayThis == Sun ) wdayThis += 7; + if ( wdayDst == Sun ) + wdayDst += 7; } //else: Sunday_First, nothing to do // go forward or back in time to the day we want - if ( weekday < wdayThis ) + if ( wdayDst < wdayThis ) { - return Subtract(wxDateSpan::Days(wdayThis - weekday)); + return Subtract(wxDateSpan::Days(wdayThis - wdayDst)); } else // weekday > wdayThis { - return Add(wxDateSpan::Days(weekday - wdayThis)); + return Add(wxDateSpan::Days(wdayDst - wdayThis)); } } @@ -1989,16 +2139,7 @@ wxDateTime& wxDateTime::SetToYearDay(wxDateTime::wxDateTime_t yday) double wxDateTime::GetJulianDayNumber() const { - // JDN are always expressed for the UTC dates - Tm tm(ToTimezone(UTC).GetTm(UTC)); - - double result = GetTruncatedJDN(tm.mday, tm.mon, tm.year); - - // add the part GetTruncatedJDN() neglected - result += 0.5; - - // and now add the time: 86400 sec = 1 JDN - return result + ((double)(60*(60*tm.hour + tm.min) + tm.sec)) / 86400; + return m_time.ToDouble() / MILLISECONDS_PER_DAY + EPOCH_JDN + 0.5; } double wxDateTime::GetRataDie() const @@ -2020,9 +2161,10 @@ int wxDateTime::IsDST(wxDateTime::Country country) const time_t timet = GetTicks(); if ( timet != (time_t)-1 ) { - tm *tm = localtime(&timet); + struct tm tmstruct; + tm *tm = wxLocaltime_r(&timet, &tmstruct); - wxCHECK_MSG( tm, -1, _T("localtime() failed") ); + wxCHECK_MSG( tm, -1, _T("wxLocaltime_r() failed") ); return tm->tm_isdst; } @@ -2052,6 +2194,21 @@ wxDateTime& wxDateTime::MakeTimezone(const TimeZone& tz, bool noDST) secDiff -= 3600; } + return Add(wxTimeSpan::Seconds(secDiff)); +} + +wxDateTime& wxDateTime::MakeFromTimezone(const TimeZone& tz, bool noDST) +{ + long secDiff = GetTimeZone() + tz.GetOffset(); + + // we need to know whether DST is or not in effect for this date unless + // the test disabled by the caller + if ( !noDST && (IsDST() == 1) ) + { + // FIXME we assume that the DST is always shifted by 1 hour + secDiff -= 3600; + } + return Subtract(wxTimeSpan::Seconds(secDiff)); } @@ -2061,7 +2218,7 @@ wxDateTime& wxDateTime::MakeTimezone(const TimeZone& tz, bool noDST) wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const { - wxCHECK_MSG( format, _T(""), _T("NULL format in wxDateTime::Format") ); + wxCHECK_MSG( format, wxEmptyString, _T("NULL format in wxDateTime::Format") ); // we have to use our own implementation if the date is out of range of // strftime() or if we use non standard specificators @@ -2069,14 +2226,15 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const if ( (time != (time_t)-1) && !wxStrstr(format, _T("%l")) ) { // use strftime() - tm *tm; + struct tm tmstruct; + struct tm *tm; if ( tz.GetOffset() == -GetTimeZone() ) { // we are working with local time - tm = localtime(&time); + tm = wxLocaltime_r(&time, &tmstruct); // should never happen - wxCHECK_MSG( tm, wxEmptyString, _T("localtime() failed") ); + wxCHECK_MSG( tm, wxEmptyString, _T("wxLocaltime_r() failed") ); } else { @@ -2089,21 +2247,23 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const if ( time >= 0 ) #endif { - tm = gmtime(&time); + tm = wxGmtime_r(&time, &tmstruct); // should never happen - wxCHECK_MSG( tm, wxEmptyString, _T("gmtime() failed") ); + wxCHECK_MSG( tm, wxEmptyString, _T("wxGmtime_r() failed") ); } else { tm = (struct tm *)NULL; } } - +#ifndef __WXWINCE__ + //Windows CE doesn't support strftime or wcsftime, so we use the generic implementation if ( tm ) { return CallStrftime(format, tm); } +#endif //else: use generic code below } @@ -2182,6 +2342,7 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const case _T('c'): // locale default date and time representation case _T('x'): // locale default date representation +#ifndef __WXWINCE__ // // the problem: there is no way to know what do these format // specifications correspond to for the current locale. @@ -2190,12 +2351,12 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const // find the YEAR which is a year in the strftime() range (1970 // - 2038) whose Jan 1 falls on the same week day as the Jan 1 // of the real year. Then make a copy of the format and - // replace all occurences of YEAR in it with some unique + // replace all occurrences of YEAR in it with some unique // string not appearing anywhere else in it, then use // strftime() to format the date in year YEAR and then replace // YEAR back by the real year and the unique replacement - // string back with YEAR. Notice that "all occurences of YEAR" - // means all occurences of 4 digit as well as 2 digit form! + // string back with YEAR. Notice that "all occurrences of YEAR" + // means all occurrences of 4 digit as well as 2 digit form! // // the bugs: we assume that neither of %c nor %x contains any // fields which may change between the YEAR and real year. For @@ -2245,6 +2406,9 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const nLostWeekDays += year++ % 4 ? 1 : 2; } + // Keep year below 2000 so the 2digit year number + // can never match the month or day of the month + if (year>=2000) year-=28; // at any rate, we couldn't go further than 1988 + 9 + 28! wxASSERT_MSG( year < 2030, _T("logic error in wxDateTime::Format") ); @@ -2253,25 +2417,30 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const strYear.Printf(_T("%d"), year); strYear2.Printf(_T("%d"), year % 100); - // find two strings not occuring in format (this is surely - // not optimal way of doing it... improvements welcome!) - wxString fmt = format; - wxString replacement = (wxChar)-1; - while ( fmt.Find(replacement) != wxNOT_FOUND ) + // find four strings not occurring in format (this is surely + // not the optimal way of doing it... improvements welcome!) + wxString fmt2 = format; + wxString replacement,replacement2,replacement3,replacement4; + for (int rnr=1; rnr<5 ; rnr++) { - replacement << (wxChar)-1; + wxString r = (wxChar)-rnr; + while ( fmt2.Find(r) != wxNOT_FOUND ) + { + r << (wxChar)-rnr; + } + + switch (rnr) + { + case 1: replacement=r; break; + case 2: replacement2=r; break; + case 3: replacement3=r; break; + case 4: replacement4=r; break; + } } - - wxString replacement2 = (wxChar)-2; - while ( fmt.Find(replacement) != wxNOT_FOUND ) - { - replacement << (wxChar)-2; - } - - // replace all occurences of year with it - bool wasReplaced = fmt.Replace(strYear, replacement) > 0; - if ( !wasReplaced ) - wasReplaced = fmt.Replace(strYear2, replacement2) > 0; + // replace all occurrences of year with it + bool wasReplaced = fmt2.Replace(strYear, replacement) > 0; + // evaluation order ensures we always attempt the replacement. + wasReplaced = (fmt2.Replace(strYear2, replacement2) > 0) | wasReplaced ; // use strftime() to format the same date but in supported // year @@ -2295,14 +2464,20 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const : _T("%x"), &tmAdjusted); - // now replace the occurence of 1999 with the real year + // now replace the occurrence of 1999 with the real year + // we do this in two stages to stop the 2 digit year + // matching any substring of the 4 digit year. + // Any day,month hours and minutes components should be safe due + // to ensuring the range of the years. wxString strYearReal, strYearReal2; strYearReal.Printf(_T("%04d"), yearReal); strYearReal2.Printf(_T("%02d"), yearReal % 100); - str.Replace(strYear, strYearReal); - str.Replace(strYear2, strYearReal2); + str.Replace(strYear, replacement3); + str.Replace(strYear2,replacement4); + str.Replace(replacement3, strYearReal); + str.Replace(replacement4, strYearReal2); - // and replace back all occurences of replacement string + // and replace back all occurrences of replacement string if ( wasReplaced ) { str.Replace(replacement2, strYear2); @@ -2311,6 +2486,11 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const res += str; } +#else + //Use "%m/%d/%y %H:%M:%S" format instead + res += wxString::Format(wxT("%02d/%02d/%04d %02d:%02d:%02d"), + tm.mon+1,tm.mday, tm.year, tm.hour, tm.min, tm.sec); +#endif break; case _T('d'): // day of a month (01-31) @@ -2347,7 +2527,11 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const break; case _T('p'): // AM or PM string +#ifndef __WXWINCE__ res += CallStrftime(_T("%p"), &tmTimeOnly); +#else + res += (tmTimeOnly.tm_hour > 12) ? wxT("pm") : wxT("am"); +#endif break; case _T('S'): // second as a decimal number (00-61) @@ -2370,7 +2554,11 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const case _T('X'): // locale default time representation // just use strftime() to format the time for us +#ifndef __WXWINCE__ res += CallStrftime(_T("%X"), &tmTimeOnly); +#else + res += wxString::Format(wxT("%02d:%02d:%02d"),tm.hour, tm.min, tm.sec); +#endif break; case _T('y'): // year without century (00-99) @@ -2382,7 +2570,9 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const break; case _T('Z'): // timezone name +#ifndef __WXWINCE__ res += CallStrftime(_T("%Z"), &tmTimeOnly); +#endif break; default: @@ -2394,7 +2584,7 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const fmt += *p; } - if ( !fmt.IsEmpty() ) + if ( !fmt.empty() ) { // we've only got the flags and width so far in fmt fmt.Prepend(_T('%')); @@ -2620,7 +2810,7 @@ const wxChar *wxDateTime::ParseRfc822Date(const wxChar* date) } // and now the interesting part: the timezone - int offset; + int offset wxDUMMY_INITIALIZE(0); if ( *p == _T('-') || *p == _T('+') ) { // the explicit offset given: it has the form of hhmm @@ -2632,7 +2822,7 @@ const wxChar *wxDateTime::ParseRfc822Date(const wxChar* date) } // hours - offset = 60*(10*(*p - _T('0')) + (*(p + 1) - _T('0'))); + offset = MIN_PER_HOUR*(10*(*p - _T('0')) + (*(p + 1) - _T('0'))); p += 2; @@ -2712,16 +2902,176 @@ const wxChar *wxDateTime::ParseRfc822Date(const wxChar* date) } // make it minutes - offset *= 60; + offset *= MIN_PER_HOUR; } - // the spec was correct + // the spec was correct, construct the date from the values we found Set(day, mon, year, hour, min, sec); - MakeTimezone((wxDateTime_t)(60*offset)); + MakeFromTimezone(TimeZone((wxDateTime_t)(offset*SEC_PER_MIN))); return p; } +#ifdef __WINDOWS__ + +// returns the string containing strftime() format used for short dates in the +// current locale or an empty string +static wxString GetLocaleDateFormat() +{ + wxString fmtWX; + + // there is no setlocale() under Windows CE, so just always query the + // system there +#ifndef __WXWINCE__ + if ( strcmp(setlocale(LC_ALL, NULL), "C") != 0 ) +#endif + { + // The locale was programatically set to non-C. We assume that this was + // done using wxLocale, in which case thread's current locale is also + // set to correct LCID value and we can use GetLocaleInfo to determine + // the correct formatting string: +#ifdef __WXWINCE__ + LCID lcid = LOCALE_USER_DEFAULT; +#else + LCID lcid = GetThreadLocale(); +#endif + // according to MSDN 80 chars is max allowed for short date format + wxChar fmt[81]; + if ( ::GetLocaleInfo(lcid, LOCALE_SSHORTDATE, fmt, WXSIZEOF(fmt)) ) + { + wxChar chLast = _T('\0'); + size_t lastCount = 0; + for ( const wxChar *p = fmt; /* NUL handled inside */; p++ ) + { + if ( *p == chLast ) + { + lastCount++; + continue; + } + + switch ( *p ) + { + // these characters come in groups, start counting them + case _T('d'): + case _T('M'): + case _T('y'): + case _T('g'): + chLast = *p; + lastCount = 1; + break; + + default: + // first deal with any special characters we have had + if ( lastCount ) + { + switch ( chLast ) + { + case _T('d'): + switch ( lastCount ) + { + case 1: // d + case 2: // dd + // these two are the same as we + // don't distinguish between 1 and + // 2 digits for days + fmtWX += _T("%d"); + break; + + case 3: // ddd + fmtWX += _T("%a"); + break; + + case 4: // dddd + fmtWX += _T("%A"); + break; + + default: + wxFAIL_MSG( _T("too many 'd's") ); + } + break; + + case _T('M'): + switch ( lastCount ) + { + case 1: // M + case 2: // MM + // as for 'd' and 'dd' above + fmtWX += _T("%m"); + break; + + case 3: + fmtWX += _T("%b"); + break; + + case 4: + fmtWX += _T("%B"); + break; + + default: + wxFAIL_MSG( _T("too many 'M's") ); + } + break; + + case _T('y'): + switch ( lastCount ) + { + case 1: // y + case 2: // yy + fmtWX += _T("%y"); + break; + + case 4: // yyyy + fmtWX += _T("%Y"); + break; + + default: + wxFAIL_MSG( _T("wrong number of 'y's") ); + } + break; + + case _T('g'): + // strftime() doesn't have era string, + // ignore this format + wxASSERT_MSG( lastCount <= 2, + _T("too many 'g's") ); + break; + + default: + wxFAIL_MSG( _T("unreachable") ); + } + + chLast = _T('\0'); + lastCount = 0; + } + + // not a special character so must be just a separator, + // treat as is + if ( *p != _T('\0') ) + { + if ( *p == _T('%') ) + { + // this one needs to be escaped + fmtWX += _T('%'); + } + + fmtWX += *p; + } + } + + if ( *p == _T('\0') ) + break; + } + } + //else: GetLocaleInfo() failed, leave fmtDate value unchanged and + // try our luck with the default formats + } + //else: default C locale, default formats should work + + return fmtWX; +} + +#endif // __WINDOWS__ + const wxChar *wxDateTime::ParseFormat(const wxChar *date, const wxChar *format, const wxDateTime& dateDef) @@ -2966,7 +3316,7 @@ const wxChar *wxDateTime::ParseFormat(const wxChar *date, wxString am, pm, token = GetAlphaToken(input); GetAmPmStrings(&am, &pm); - if (am.IsEmpty() && pm.IsEmpty()) + if (am.empty() && pm.empty()) return (wxChar *)NULL; // no am/pm strings defined if ( token.CmpNoCase(pm) == 0 ) { @@ -3015,6 +3365,7 @@ const wxChar *wxDateTime::ParseFormat(const wxChar *date, hour = tm.hour; min = tm.min; } + break; case _T('S'): // second as a decimal number (00-61) if ( !GetNumericToken(width, input, &num) || (num > 61) ) @@ -3081,26 +3432,34 @@ const wxChar *wxDateTime::ParseFormat(const wxChar *date, } #endif // HAVE_STRPTIME - // TODO query the LOCALE_IDATE setting under Win32 { wxDateTime dt; - - wxString fmtDate, fmtDateAlt; - if ( IsWestEuropeanCountry(GetCountry()) || - GetCountry() == Russia ) - { - fmtDate = _T("%d/%m/%y"); - fmtDateAlt = _T("%m/%d/%y"); - } - else // assume USA + wxString fmtDate, + fmtDateAlt; + +#ifdef __WINDOWS__ + // The above doesn't work for all locales, try to query + // Windows for the right way of formatting the date: + fmtDate = GetLocaleDateFormat(); + if ( fmtDate.empty() ) +#endif { - fmtDate = _T("%m/%d/%y"); - fmtDateAlt = _T("%d/%m/%y"); + if ( IsWestEuropeanCountry(GetCountry()) || + GetCountry() == Russia ) + { + fmtDate = _T("%d/%m/%y"); + fmtDateAlt = _T("%m/%d/%y"); + } + else // assume USA + { + fmtDate = _T("%m/%d/%y"); + fmtDateAlt = _T("%d/%m/%y"); + } } const wxChar *result = dt.ParseFormat(input, fmtDate); - if ( !result ) + if ( !result && !fmtDateAlt.empty() ) { // ok, be nice and try another one result = dt.ParseFormat(input, fmtDateAlt); @@ -3390,12 +3749,12 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date) for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ ) { - wxString date = wxGetTranslation(literalDates[n].str); - size_t len = date.length(); + const wxString dateStr = wxGetTranslation(literalDates[n].str); + size_t len = dateStr.length(); if ( wxStrlen(p) >= len ) { wxString str(p, len); - if ( str.CmpNoCase(date) == 0 ) + if ( str.CmpNoCase(dateStr) == 0 ) { // nothing can follow this, so stop here p += len; @@ -3463,14 +3822,16 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date) } else // may be either day or year { - wxDateTime_t maxDays = (wxDateTime_t)( + // use a leap year if we don't have the year yet to allow + // dates like 2/29/1976 which would be rejected otherwise + wxDateTime_t max_days = (wxDateTime_t)( haveMon - ? GetNumOfDaysInMonth(haveYear ? year : Inv_Year, mon) + ? GetNumOfDaysInMonth(haveYear ? year : 1976, mon) : 31 ); // can it be day? - if ( (val == 0) || (val > (unsigned long)maxDays) ) + if ( (val == 0) || (val > (unsigned long)max_days) ) { // no isYear = true; @@ -3618,7 +3979,7 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date) { wxLogDebug(_T("ParseDate: no day, no weekday hence no date.")); - return (wxChar *)NULL; + return NULL; } if ( haveWDay && (haveMon || haveYear || haveDay) && @@ -3627,7 +3988,7 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date) // without adjectives (which we don't support here) the week day only // makes sense completely separately or with the full date // specification (what would "Wed 1999" mean?) - return (wxChar *)NULL; + return NULL; } if ( !haveWDay && haveYear && !(haveDay && haveMon) ) @@ -3657,7 +4018,7 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date) // if we give the year, month and day must be given too wxLogDebug(_T("ParseDate: day and month should be specified if year is.")); - return (wxChar *)NULL; + return NULL; } } @@ -3673,6 +4034,11 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date) if ( haveDay ) { + // normally we check the day above but the check is optimistic in case + // we find the day before its month/year so we have to redo it now + if ( day > GetNumOfDaysInMonth(year, mon) ) + return NULL; + Set(day, mon, year); if ( haveWDay ) @@ -3792,10 +4158,25 @@ bool wxDateTime::IsWorkDay(Country WXUNUSED(country)) const return !wxDateTimeHolidayAuthority::IsHoliday(*this); } +// ============================================================================ +// wxDateSpan +// ============================================================================ + +wxDateSpan WXDLLIMPEXP_BASE operator*(int n, const wxDateSpan& ds) +{ + wxDateSpan ds1(ds); + return ds1.Multiply(n); +} + // ============================================================================ // wxTimeSpan // ============================================================================ +wxTimeSpan WXDLLIMPEXP_BASE operator*(int n, const wxTimeSpan& ts) +{ + return wxTimeSpan(ts).Multiply(n); +} + // this enum is only used in wxTimeSpan::Format() below but we can't declare // it locally to the method as it provokes an internal compiler error in egcs // 2.91.60 when building with -O2 @@ -3827,7 +4208,7 @@ enum TimeSpanPart // %l milliseconds (000 - 999) wxString wxTimeSpan::Format(const wxChar *format) const { - wxCHECK_MSG( format, _T(""), _T("NULL format in wxTimeSpan::Format") ); + wxCHECK_MSG( format, wxEmptyString, _T("NULL format in wxTimeSpan::Format") ); wxString str; str.Alloc(wxStrlen(format)); @@ -3855,11 +4236,14 @@ wxString wxTimeSpan::Format(const wxChar *format) const if ( ch == _T('%') ) { // the start of the format specification of the printf() below - wxString fmtPrefix = _T('%'); + wxString fmtPrefix(_T('%')); // the number long n; + // the number of digits for the format string, 0 if unused + unsigned digits = 0; + ch = *++pch; // get the format spec char switch ( ch ) { @@ -3894,6 +4278,13 @@ wxString wxTimeSpan::Format(const wxChar *format) const n = GetHours(); if ( partBiggest < Part_Hour ) { + if ( n < 0 ) + { + // the sign has already been taken into account + // when outputting the biggest part + n = -n; + } + n %= HOURS_PER_DAY; } else @@ -3901,25 +4292,31 @@ wxString wxTimeSpan::Format(const wxChar *format) const partBiggest = Part_Hour; } - fmtPrefix += _T("02"); + digits = 2; break; case _T('l'): n = GetMilliseconds().ToLong(); if ( partBiggest < Part_MSec ) { + if ( n < 0 ) + n = -n; + n %= 1000; } //else: no need to reset partBiggest to Part_MSec, it is // the least significant one anyhow - fmtPrefix += _T("03"); + digits = 3; break; case _T('M'): n = GetMinutes(); if ( partBiggest < Part_Min ) { + if ( n < 0 ) + n = -n; + n %= MIN_PER_HOUR; } else @@ -3927,13 +4324,16 @@ wxString wxTimeSpan::Format(const wxChar *format) const partBiggest = Part_Min; } - fmtPrefix += _T("02"); + digits = 2; break; case _T('S'): n = GetSeconds().ToLong(); if ( partBiggest < Part_Sec ) { + if ( n < 0 ) + n = -n; + n %= SEC_PER_MIN; } else @@ -3941,10 +4341,19 @@ wxString wxTimeSpan::Format(const wxChar *format) const partBiggest = Part_Sec; } - fmtPrefix += _T("02"); + digits = 2; break; } + if ( digits ) + { + // negative numbers need one extra position for '-' display + if ( n < 0 ) + digits++; + + fmtPrefix << _T("0") << digits; + } + str += wxString::Format(fmtPrefix + _T("ld"), n); } else @@ -3963,7 +4372,7 @@ wxString wxTimeSpan::Format(const wxChar *format) const #include "wx/arrimpl.cpp" -WX_DEFINE_OBJARRAY(wxDateTimeArray); +WX_DEFINE_OBJARRAY(wxDateTimeArray) static int wxCMPFUNC_CONV wxDateTimeCompareFunc(wxDateTime **first, wxDateTime **second) @@ -4005,8 +4414,8 @@ wxDateTimeHolidayAuthority::GetHolidaysInRange(const wxDateTime& dtStart, holidays.Clear(); - size_t count = ms_authorities.size(); - for ( size_t nAuth = 0; nAuth < count; nAuth++ ) + const size_t countAuth = ms_authorities.size(); + for ( size_t nAuth = 0; nAuth < countAuth; nAuth++ ) { ms_authorities[nAuth]->DoGetHolidaysInRange(dtStart, dtEnd, hol); @@ -4030,6 +4439,11 @@ void wxDateTimeHolidayAuthority::AddAuthority(wxDateTimeHolidayAuthority *auth) ms_authorities.push_back(auth); } +wxDateTimeHolidayAuthority::~wxDateTimeHolidayAuthority() +{ + // required here for Darwin +} + // ---------------------------------------------------------------------------- // wxDateTimeWorkDays // ---------------------------------------------------------------------------- @@ -4075,4 +4489,46 @@ size_t wxDateTimeWorkDays::DoGetHolidaysInRange(const wxDateTime& dtStart, return holidays.GetCount(); } +// ============================================================================ +// 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) ) +// ---------------------------------------------------------------------------- + +WXDLLIMPEXP_BASE void wxNextMonth(wxDateTime::Month& m) +{ + wxASSERT_MSG( m < wxDateTime::Inv_Month, _T("invalid month") ); + + // no wrapping or the for loop above would never end! + m = (wxDateTime::Month)(m + 1); +} + +WXDLLIMPEXP_BASE 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); +} + +WXDLLIMPEXP_BASE 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); +} + +WXDLLIMPEXP_BASE 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 // wxUSE_DATETIME