X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/df05cdc578d20df7bdb0eb90869b72c9ed911664..ad653fa23069c5d9378247084f03c9a718c3ad62:/src/common/datetime.cpp diff --git a/src/common/datetime.cpp b/src/common/datetime.cpp index 5198a3773d..6ea7a0a37a 100644 --- a/src/common/datetime.cpp +++ b/src/common/datetime.cpp @@ -1,6 +1,7 @@ /////////////////////////////////////////////////////////////////////////////// -// Name: wx/datetime.h +// Name: src/common/datetime.cpp // Purpose: implementation of time/date related classes +// (for formatting&parsing see datetimefmt.cpp) // Author: Vadim Zeitlin // Modified by: // Created: 11.05.99 @@ -13,7 +14,7 @@ // so long as the above copyright and this permission statement // are retained in all copies. // -// Licence: wxWindows license +// Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// /* @@ -52,10 +53,6 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "datetime.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -63,61 +60,62 @@ #pragma hdrstop #endif +#if !defined(wxUSE_DATETIME) || wxUSE_DATETIME + #ifndef WX_PRECOMP + #ifdef __WINDOWS__ + #include "wx/msw/wrapwin.h" + #endif #include "wx/string.h" - #include "wx/intl.h" #include "wx/log.h" + #include "wx/intl.h" + #include "wx/stopwatch.h" // for wxGetLocalTimeMillis() + #include "wx/module.h" + #include "wx/crt.h" #endif // WX_PRECOMP #include "wx/thread.h" +#include "wx/time.h" #include "wx/tokenzr.h" -#include "wx/module.h" - -#define wxDEFINE_TIME_CONSTANTS // before including datetime.h #include +#ifdef __WINDOWS__ + #include + #ifndef __WXWINCE__ + #include + #endif +#endif + #include "wx/datetime.h" -#include "wx/timer.h" // for wxGetLocalTimeMillis() // ---------------------------------------------------------------------------- -// conditional compilation +// wxXTI // ---------------------------------------------------------------------------- -#if defined(HAVE_STRPTIME) && defined(__LINUX__) - // glibc 2.0.7 strptime() is broken - the following snippet causes it to - // crash (instead of just failing): - // - // strncpy(buf, "Tue Dec 21 20:25:40 1999", 128); - // strptime(buf, "%x", &tm); - // - // so don't use it - #undef HAVE_STRPTIME -#endif // broken strptime() - -#ifndef WX_TIMEZONE - #if defined(__BORLANDC__) || defined(__MINGW32__) || defined(__VISAGECPP__) - #define WX_TIMEZONE _timezone - #elif defined(__MWERKS__) - long wxmw_timezone = 28800; - #define WX_TIMEZONE wxmw_timezone; - #else // unknown platform - try timezone - #define WX_TIMEZONE timezone - #endif -#endif // !WX_TIMEZONE +#if wxUSE_EXTENDED_RTTI + +template<> void wxStringReadValue(const wxString &s , wxDateTime &data ) +{ + data.ParseFormat(s,"%Y-%m-%d %H:%M:%S", NULL); +} + +template<> void wxStringWriteValue(wxString &s , const wxDateTime &data ) +{ + s = data.Format("%Y-%m-%d %H:%M:%S"); +} + +wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter , wxFromStringConverter) + +#endif // wxUSE_EXTENDED_RTTI // ---------------------------------------------------------------------------- // 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 @@ -130,13 +128,13 @@ public: { wxDateTimeHolidayAuthority::AddAuthority(new wxDateTimeWorkDays); - return TRUE; + return true; } virtual void OnExit() { wxDateTimeHolidayAuthority::ClearAllAuthorities(); - wxDateTimeHolidayAuthority::ms_authorities.Clear(); + wxDateTimeHolidayAuthority::ms_authorities.clear(); } private: @@ -156,8 +154,6 @@ static const int SEC_PER_MIN = 60; static const int MIN_PER_HOUR = 60; -static const int HOURS_PER_DAY = 24; - static const long SECONDS_PER_DAY = 86400l; static const int DAYS_PER_WEEK = 7; @@ -168,11 +164,15 @@ static const long MILLISECONDS_PER_DAY = 86400000l; // (i.e. JDN(Jan 1, 1970) = 2440587.5) static const long EPOCH_JDN = 2440587l; +// these values are only used in asserts so don't define them if asserts are +// disabled to avoid warnings about unused static variables +#if wxDEBUG_LEVEL // 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_LEVEL // the constants used for JDN calculations static const long JDN_OFFSET = 32046l; @@ -188,43 +188,38 @@ static const wxDateTime::wxDateTime_t gs_cumulatedDays[2][MONTHS_IN_YEAR] = { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 } }; +const long wxDateTime::TIME_T_FACTOR = 1000l; + // ---------------------------------------------------------------------------- // global data // ---------------------------------------------------------------------------- +const char wxDefaultDateTimeFormat[] = "%c"; +const char wxDefaultTimeSpanFormat[] = "%H:%M:%S"; + // in the fine tradition of ANSI C we use our equivalent of (time_t)-1 to // indicate an invalid wxDateTime object -static const wxDateTime gs_dtDefault = wxLongLong((long)ULONG_MAX, ULONG_MAX); - -const wxDateTime& wxDefaultDateTime = gs_dtDefault; +const wxDateTime wxDefaultDateTime; wxDateTime::Country wxDateTime::ms_country = wxDateTime::Country_Unknown; -// ---------------------------------------------------------------------------- -// private globals -// ---------------------------------------------------------------------------- - -// a critical section is needed to protect GetTimeZone() static -// variable in MT case -#if wxUSE_THREADS - static wxCriticalSection gs_critsectTimezone; -#endif // wxUSE_THREADS - // ---------------------------------------------------------------------------- // private functions // ---------------------------------------------------------------------------- -// debugger helper: shows what the date really is -#ifdef __WXDEBUG__ -extern const wxChar *wxDumpDate(const wxDateTime* dt) +// debugger helper: this function can be called from a debugger to show what +// the date really is +extern const char *wxDumpDate(const wxDateTime* dt) { - static wxChar buf[128]; + static char buf[128]; - wxStrcpy(buf, dt->Format(_T("%Y-%m-%d (%a) %H:%M:%S"))); + wxString fmt(dt->Format("%Y-%m-%d (%a) %H:%M:%S")); + wxStrlcpy(buf, + (fmt + " (" + dt->GetValue().ToString() + " ticks)").ToAscii(), + WXSIZEOF(buf)); return buf; } -#endif // Debug // get the number of days in the given month of the given year static inline @@ -232,7 +227,7 @@ wxDateTime::wxDateTime_t GetNumOfDaysInMonth(int year, wxDateTime::Month month) { // the number of days in month in Julian/Gregorian calendar: the first line // is for normal years, the second one is for the leap ones - static wxDateTime::wxDateTime_t daysInMonth[2][MONTHS_IN_YEAR] = + static const wxDateTime::wxDateTime_t daysInMonth[2][MONTHS_IN_YEAR] = { { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }, { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 } @@ -241,27 +236,6 @@ wxDateTime::wxDateTime_t GetNumOfDaysInMonth(int year, wxDateTime::Month month) return daysInMonth[wxDateTime::IsLeapYear(year)][month]; } -// ensure that the timezone variable is set by calling localtime -static int GetTimeZone() -{ - // set to TRUE when the timezone is set - static bool s_timezoneSet = FALSE; - - wxCRIT_SECT_LOCKER(lock, gs_critsectTimezone); - - if ( !s_timezoneSet ) - { - // just call localtime() instead of figuring out whether this system - // supports tzset(), _tzset() or something else - time_t t = 0; - - (void)localtime(&t); - s_timezoneSet = TRUE; - } - - return (int)WX_TIMEZONE; -} - // return the integral part of the JDN for the midnight of the given date (to // get the real JDN you need to add 0.5, this is, in fact, JDN of the // noon of the previous day) @@ -276,7 +250,7 @@ static long GetTruncatedJDN(wxDateTime::wxDateTime_t day, (year > JDN_0_YEAR) || ((year == JDN_0_YEAR) && (mon > JDN_0_MONTH)) || ((year == JDN_0_YEAR) && (mon == JDN_0_MONTH) && (day >= JDN_0_DAY)), - _T("date out of range - can't convert to JDN") + wxT("date out of range - can't convert to JDN") ); // make the year positive to avoid problems with negative numbers division @@ -302,28 +276,48 @@ static long GetTruncatedJDN(wxDateTime::wxDateTime_t day, - JDN_OFFSET; } -// this function is a wrapper around strftime(3) -static wxString CallStrftime(const wxChar *format, const tm* tm) +#ifdef wxHAS_STRFTIME + +// this function is a wrapper around strftime(3) adding error checking +// NOTE: not static because used by datetimefmt.cpp +wxString CallStrftime(const wxString& 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")); + // There is one special case in which strftime() can return 0 without + // indicating an error: "%p" may give empty string depending on the + // locale, so check for it explicitly. Apparently it's really the only + // exception. + if ( format != wxS("%p") ) + { + // if the format is valid, buffer must be too small? + wxFAIL_MSG(wxT("strftime() failed")); + } + + buf[0] = '\0'; } - return wxString(buf); + s = buf; + return s; } +#endif // wxHAS_STRFTIME + // if year and/or month have invalid values, replace them with the current ones 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; } @@ -331,14 +325,15 @@ 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; } } -// fll the struct tm with default values -static void InitTm(struct tm& tm) +// fill the struct tm with default values +// NOTE: not static because used by datetimefmt.cpp +void InitTm(struct tm& tm) { // struct tm may have etxra fields (undocumented and with unportable // names) which, nevertheless, must be set to 0 @@ -349,97 +344,6 @@ static void InitTm(struct tm& tm) tm.tm_isdst = -1; // auto determine } -// parsing helpers -// --------------- - -// return the month if the string is a month name or Inv_Month otherwise -static wxDateTime::Month GetMonthFromName(const wxString& name, int flags) -{ - wxDateTime::Month mon; - for ( mon = wxDateTime::Jan; mon < wxDateTime::Inv_Month; wxNextMonth(mon) ) - { - // case-insensitive comparison either one of or with both abbreviated - // and not versions - if ( flags & wxDateTime::Name_Full ) - { - if ( name.CmpNoCase(wxDateTime:: - GetMonthName(mon, wxDateTime::Name_Full)) == 0 ) - { - break; - } - } - - if ( flags & wxDateTime::Name_Abbr ) - { - if ( name.CmpNoCase(wxDateTime:: - GetMonthName(mon, wxDateTime::Name_Abbr)) == 0 ) - { - break; - } - } - } - - return mon; -} - -// return the weekday if the string is a weekday name or Inv_WeekDay otherwise -static wxDateTime::WeekDay GetWeekDayFromName(const wxString& name, int flags) -{ - wxDateTime::WeekDay wd; - for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) ) - { - // case-insensitive comparison either one of or with both abbreviated - // and not versions - if ( flags & wxDateTime::Name_Full ) - { - if ( name.CmpNoCase(wxDateTime:: - GetWeekDayName(wd, wxDateTime::Name_Full)) == 0 ) - { - break; - } - } - - if ( flags & wxDateTime::Name_Abbr ) - { - if ( name.CmpNoCase(wxDateTime:: - GetWeekDayName(wd, wxDateTime::Name_Abbr)) == 0 ) - { - break; - } - } - } - - return wd; -} - -// 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) -{ - size_t n = 1; - wxString s; - while ( wxIsdigit(*p) ) - { - s += *p++; - - if ( len && ++n > len ) - break; - } - - return !!s && s.ToULong(number); -} - -// scans all alphabetic characters and returns the resulting string -static wxString GetAlphaToken(const wxChar*& p) -{ - wxString s; - while ( wxIsalpha(*p) ) - { - s += *p++; - } - - return s; -} - // ============================================================================ // implementation of wxDateTime // ============================================================================ @@ -452,8 +356,12 @@ wxDateTime::Tm::Tm() { year = (wxDateTime_t)wxDateTime::Inv_Year; mon = wxDateTime::Inv_Month; - mday = 0; - hour = min = sec = msec = 0; + mday = + yday = 0; + hour = + min = + sec = + msec = 0; wday = wxDateTime::Inv_WeekDay; } @@ -461,21 +369,29 @@ wxDateTime::Tm::Tm(const struct tm& tm, const TimeZone& tz) : m_tz(tz) { msec = 0; - sec = tm.tm_sec; - min = tm.tm_min; - hour = tm.tm_hour; - mday = tm.tm_mday; + sec = (wxDateTime::wxDateTime_t)tm.tm_sec; + min = (wxDateTime::wxDateTime_t)tm.tm_min; + hour = (wxDateTime::wxDateTime_t)tm.tm_hour; + 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 { + if ( mon == wxDateTime::Inv_Month ) + return false; + + // We need to check this here to avoid crashing in GetNumOfDaysInMonth() if + // somebody passed us "(wxDateTime::Month)1000". + wxCHECK_MSG( mon >= wxDateTime::Jan && mon < wxDateTime::Inv_Month, false, + wxS("Invalid month value") ); + // we allow for the leap seconds, although we don't use them (yet) return (year != wxDateTime::Inv_Year) && (mon != wxDateTime::Inv_Month) && - (mday <= GetNumOfDaysInMonth(year, mon)) && + (mday > 0 && mday <= GetNumOfDaysInMonth(year, mon)) && (hour < 24) && (min < 60) && (sec < 62) && (msec < 1000); } @@ -484,7 +400,7 @@ 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)((GetTruncatedJDN(mday, mon, year) + 2) % 7); } void wxDateTime::Tm::AddMonths(int monDiff) @@ -506,7 +422,7 @@ void wxDateTime::Tm::AddMonths(int monDiff) mon = (wxDateTime::Month)(mon + monDiff); - wxASSERT_MSG( mon >= 0 && mon < MONTHS_IN_YEAR, _T("logic error") ); + wxASSERT_MSG( mon >= 0 && mon < MONTHS_IN_YEAR, wxT("logic error") ); // NB: we don't check here that the resulting date is valid, this function // is private and the caller must check it if needed @@ -522,7 +438,7 @@ void wxDateTime::Tm::AddDays(int dayDiff) dayDiff += GetNumOfDaysInMonth(year, mon); } - mday += dayDiff; + mday = (wxDateTime::wxDateTime_t)( mday + dayDiff ); while ( mday > GetNumOfDaysInMonth(year, mon) ) { mday -= GetNumOfDaysInMonth(year, mon); @@ -531,7 +447,7 @@ void wxDateTime::Tm::AddDays(int dayDiff) } wxASSERT_MSG( mday > 0 && mday <= GetNumOfDaysInMonth(year, mon), - _T("logic error") ); + wxT("logic error") ); } // ---------------------------------------------------------------------------- @@ -545,7 +461,7 @@ wxDateTime::TimeZone::TimeZone(wxDateTime::TZ tz) case wxDateTime::Local: // get the offset from C RTL: it returns the difference GMT-local // while we want to have the offset _from_ GMT, hence the '-' - m_offset = -GetTimeZone(); + m_offset = -wxGetTimeZone(); break; case wxDateTime::GMT_12: @@ -576,16 +492,17 @@ wxDateTime::TimeZone::TimeZone(wxDateTime::TZ tz) case wxDateTime::GMT10: case wxDateTime::GMT11: case wxDateTime::GMT12: + case wxDateTime::GMT13: m_offset = 3600*(tz - wxDateTime::GMT0); break; 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: - wxFAIL_MSG( _T("unknown time zone") ); + wxFAIL_MSG( wxT("unknown time zone") ); } } @@ -593,6 +510,13 @@ wxDateTime::TimeZone::TimeZone(wxDateTime::TZ tz) // static functions // ---------------------------------------------------------------------------- +/* static */ +struct tm *wxDateTime::GetTmNow(struct tm *tmstruct) +{ + time_t t = GetTimeNow(); + return wxLocaltime_r(&t, tmstruct); +} + /* static */ bool wxDateTime::IsLeapYear(int year, wxDateTime::Calendar cal) { @@ -614,9 +538,9 @@ bool wxDateTime::IsLeapYear(int year, wxDateTime::Calendar cal) } else { - wxFAIL_MSG(_T("unknown calendar")); + wxFAIL_MSG(wxT("unknown calendar")); - return FALSE; + return false; } } @@ -642,11 +566,11 @@ int wxDateTime::GetCurrentYear(wxDateTime::Calendar cal) return Now().GetYear(); case Julian: - wxFAIL_MSG(_T("TODO")); + wxFAIL_MSG(wxT("TODO")); break; default: - wxFAIL_MSG(_T("unsupported calendar")); + wxFAIL_MSG(wxT("unsupported calendar")); break; } @@ -662,11 +586,11 @@ wxDateTime::Month wxDateTime::GetCurrentMonth(wxDateTime::Calendar cal) return Now().GetMonth(); case Julian: - wxFAIL_MSG(_T("TODO")); + wxFAIL_MSG(wxT("TODO")); break; default: - wxFAIL_MSG(_T("unsupported calendar")); + wxFAIL_MSG(wxT("unsupported calendar")); break; } @@ -689,7 +613,7 @@ wxDateTime::wxDateTime_t wxDateTime::GetNumberOfDays(int year, Calendar cal) return IsLeapYear(year) ? 366 : 365; default: - wxFAIL_MSG(_T("unsupported calendar")); + wxFAIL_MSG(wxT("unsupported calendar")); break; } @@ -701,7 +625,7 @@ wxDateTime::wxDateTime_t wxDateTime::GetNumberOfDays(wxDateTime::Month month, int year, wxDateTime::Calendar cal) { - wxCHECK_MSG( month < MONTHS_IN_YEAR, 0, _T("invalid month") ); + wxCHECK_MSG( month < MONTHS_IN_YEAR, 0, wxT("invalid month") ); if ( cal == Gregorian || cal == Julian ) { @@ -715,17 +639,66 @@ wxDateTime::wxDateTime_t wxDateTime::GetNumberOfDays(wxDateTime::Month month, } else { - wxFAIL_MSG(_T("unsupported calendar")); + wxFAIL_MSG(wxT("unsupported calendar")); return 0; } } +namespace +{ + +// helper function used by GetEnglish/WeekDayName(): returns 0 if flags is +// Name_Full and 1 if it is Name_Abbr or -1 if the flags is incorrect (and +// asserts in this case) +// +// the return value of this function is used as an index into 2D array +// containing full names in its first row and abbreviated ones in the 2nd one +int NameArrayIndexFromFlag(wxDateTime::NameFlags flags) +{ + switch ( flags ) + { + case wxDateTime::Name_Full: + return 0; + + case wxDateTime::Name_Abbr: + return 1; + + default: + wxFAIL_MSG( "unknown wxDateTime::NameFlags value" ); + } + + return -1; +} + +} // anonymous namespace + +/* static */ +wxString wxDateTime::GetEnglishMonthName(Month month, NameFlags flags) +{ + wxCHECK_MSG( month != Inv_Month, wxEmptyString, "invalid month" ); + + static const char *const monthNames[2][MONTHS_IN_YEAR] = + { + { "January", "February", "March", "April", "May", "June", + "July", "August", "September", "October", "November", "December" }, + { "Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" } + }; + + const int idx = NameArrayIndexFromFlag(flags); + if ( idx == -1 ) + return wxString(); + + return monthNames[idx][month]; +} + /* static */ wxString wxDateTime::GetMonthName(wxDateTime::Month month, wxDateTime::NameFlags flags) { - wxCHECK_MSG( month != Inv_Month, _T(""), _T("invalid month") ); +#ifdef wxHAS_STRFTIME + wxCHECK_MSG( month != Inv_Month, wxEmptyString, wxT("invalid month") ); // 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) @@ -733,19 +706,44 @@ wxString wxDateTime::GetMonthName(wxDateTime::Month month, InitTm(tm); tm.tm_mon = month; - return CallStrftime(flags == Name_Abbr ? _T("%b") : _T("%B"), &tm); + return CallStrftime(flags == Name_Abbr ? wxT("%b") : wxT("%B"), &tm); +#else // !wxHAS_STRFTIME + return GetEnglishMonthName(month, flags); +#endif // wxHAS_STRFTIME/!wxHAS_STRFTIME +} + +/* static */ +wxString wxDateTime::GetEnglishWeekDayName(WeekDay wday, NameFlags flags) +{ + wxCHECK_MSG( wday != Inv_WeekDay, wxEmptyString, wxT("invalid weekday") ); + + static const char *const weekdayNames[2][DAYS_PER_WEEK] = + { + { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", + "Saturday" }, + { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" }, + }; + + const int idx = NameArrayIndexFromFlag(flags); + if ( idx == -1 ) + return wxString(); + + return weekdayNames[idx][wday]; } /* static */ wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday, wxDateTime::NameFlags flags) { - wxCHECK_MSG( wday != Inv_WeekDay, _T(""), _T("invalid weekday") ); +#ifdef wxHAS_STRFTIME + wxCHECK_MSG( wday != Inv_WeekDay, wxEmptyString, wxT("invalid weekday") ); - // take some arbitrary Sunday + // 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!) tm tm; InitTm(tm); - tm.tm_mday = 28; + tm.tm_mday = 21; tm.tm_mon = Nov; tm.tm_year = 99; @@ -756,7 +754,10 @@ wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday, (void)mktime(&tm); // ... and call strftime() - return CallStrftime(flags == Name_Abbr ? _T("%a") : _T("%A"), &tm); + return CallStrftime(flags == Name_Abbr ? wxT("%a") : wxT("%A"), &tm); +#else // !wxHAS_STRFTIME + return GetEnglishWeekDayName(wday, flags); +#endif // wxHAS_STRFTIME/!wxHAS_STRFTIME } /* static */ @@ -764,17 +765,33 @@ void wxDateTime::GetAmPmStrings(wxString *am, wxString *pm) { tm tm; InitTm(tm); + wxChar buffer[64]; + // @Note: Do not call 'CallStrftime' here! CallStrftime checks the return code + // and causes an assertion failed if the buffer is to small (which is good) - OR - + // if strftime does not return anything because the format string is invalid - OR - + // if there are no 'am' / 'pm' tokens defined for the current locale (which is not good). + // wxDateTime::ParseTime will try several different formats to parse the time. + // As a result, GetAmPmStrings might get called, even if the current locale + // does not define any 'am' / 'pm' tokens. In this case, wxStrftime would + // assert, even though it is a perfectly legal use. if ( am ) { - *am = CallStrftime(_T("%p"), &tm); + if (wxStrftime(buffer, WXSIZEOF(buffer), wxT("%p"), &tm) > 0) + *am = wxString(buffer); + else + *am = wxString(); } if ( pm ) { tm.tm_hour = 13; - *pm = CallStrftime(_T("%p"), &tm); + if (wxStrftime(buffer, WXSIZEOF(buffer), wxT("%p"), &tm) > 0) + *pm = wxString(buffer); + else + *pm = wxString(); } } + // ---------------------------------------------------------------------------- // Country stuff: date calculations depend on the country (DST, work days, // ...), so we need to know which rules to follow. @@ -784,31 +801,32 @@ 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") ) + wxString tz = CallStrftime(wxT("%Z"), tm); + if ( tz == wxT("WET") || tz == wxT("WEST") ) { ms_country = UK; } - else if ( tz == _T("CET") || tz == _T("CEST") ) + else if ( tz == wxT("CET") || tz == wxT("CEST") ) { ms_country = Country_EEC; } - else if ( tz == _T("MSK") || tz == _T("MSD") ) + else if ( tz == wxT("MSK") || tz == wxT("MSD") ) { ms_country = Russia; } - else if ( tz == _T("AST") || tz == _T("ADT") || - tz == _T("EST") || tz == _T("EDT") || - tz == _T("CST") || tz == _T("CDT") || - tz == _T("MST") || tz == _T("MDT") || - tz == _T("PST") || tz == _T("PDT") ) + else if ( tz == wxT("AST") || tz == wxT("ADT") || + tz == wxT("EST") || tz == wxT("EDT") || + tz == wxT("CST") || tz == wxT("CDT") || + tz == wxT("MST") || tz == wxT("MDT") || + tz == wxT("PST") || tz == wxT("PDT") ) { ms_country = USA; } @@ -818,6 +836,9 @@ wxDateTime::Country wxDateTime::GetCountry() ms_country = USA; } } +#else // __WXWINCE__ + ms_country = USA; +#endif // !__WXWINCE__/__WXWINCE__ return ms_country; } @@ -904,13 +925,10 @@ wxDateTime wxDateTime::GetBeginDST(int year, Country country) if ( !dt.SetToLastWeekDay(Sun, Mar, year) ) { // weird... - wxFAIL_MSG( _T("no last Sunday in March?") ); + wxFAIL_MSG( wxT("no last Sunday in March?") ); } dt += wxTimeSpan::Hours(1); - - // disable DST tests because it could result in an infinite recursion! - dt.MakeGMT(TRUE); } else switch ( country ) { @@ -950,7 +968,18 @@ wxDateTime wxDateTime::GetBeginDST(int year, Country country) if ( !dt.SetToLastWeekDay(Sun, Apr, year) ) { // weird... - wxFAIL_MSG( _T("no first Sunday in April?") ); + wxFAIL_MSG( wxT("no first Sunday in April?") ); + } + } + else if ( year > 2006 ) + // Energy Policy Act of 2005, Pub. L. no. 109-58, 119 Stat 594 (2005). + // Starting in 2007, daylight time begins in the United States on the + // second Sunday in March and ends on the first Sunday in November + { + if ( !dt.SetToWeekDay(Sun, 2, Mar, year) ) + { + // weird... + wxFAIL_MSG( wxT("no second Sunday in March?") ); } } else @@ -958,7 +987,7 @@ wxDateTime wxDateTime::GetBeginDST(int year, Country country) if ( !dt.SetToWeekDay(Sun, 1, Apr, year) ) { // weird... - wxFAIL_MSG( _T("no first Sunday in April?") ); + wxFAIL_MSG( wxT("no first Sunday in April?") ); } } @@ -1005,13 +1034,10 @@ wxDateTime wxDateTime::GetEndDST(int year, Country country) if ( !dt.SetToLastWeekDay(Sun, Oct, year) ) { // weirder and weirder... - wxFAIL_MSG( _T("no last Sunday in October?") ); + wxFAIL_MSG( wxT("no last Sunday in October?") ); } dt += wxTimeSpan::Hours(1); - - // disable DST tests because it could result in an infinite recursion! - dt.MakeGMT(TRUE); } else switch ( country ) { @@ -1032,21 +1058,36 @@ wxDateTime wxDateTime::GetEndDST(int year, Country country) dt.Set(30, Sep, year); break; - default: - // DST ends at 2 a.m. on the last Sunday of October - if ( !dt.SetToLastWeekDay(Sun, Oct, year) ) + default: // default for switch (year) + if ( year > 2006 ) + // Energy Policy Act of 2005, Pub. L. no. 109-58, 119 Stat 594 (2005). + // Starting in 2007, daylight time begins in the United States on the + // second Sunday in March and ends on the first Sunday in November + { + if ( !dt.SetToWeekDay(Sun, 1, Nov, year) ) + { + // weird... + wxFAIL_MSG( wxT("no first Sunday in November?") ); + } + } + else + // pre-2007 + // DST ends at 2 a.m. on the last Sunday of October { - // weirder and weirder... - wxFAIL_MSG( _T("no last Sunday in October?") ); + if ( !dt.SetToLastWeekDay(Sun, Oct, year) ) + { + // weirder and weirder... + wxFAIL_MSG( wxT("no last Sunday in October?") ); + } } dt += wxTimeSpan::Hours(2); - // TODO what about timezone?? + // TODO: what about timezone?? } break; - default: + default: // default for switch (country) // assume October 26th as the end of the DST - totally bogus too dt.Set(26, Oct, year); } @@ -1061,14 +1102,12 @@ wxDateTime wxDateTime::GetEndDST(int year, Country country) // return the current time with ms precision /* static */ wxDateTime wxDateTime::UNow() { - return wxDateTime(wxGetLocalTimeMillis()); + return wxDateTime(wxGetUTCTimeMillis()); } // the values in the tm structure contain the local time wxDateTime& wxDateTime::Set(const struct tm& tm) { - wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); - struct tm tm2(tm); time_t timet = mktime(&tm2); @@ -1078,19 +1117,14 @@ 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)( + wxGetTimeZone() + + tm2.tm_hour * MIN_PER_HOUR * SEC_PER_MIN + + tm2.tm_min * SEC_PER_MIN + + tm2.tm_sec)); } - wxFAIL_MSG( _T("mktime() failed") ); + wxFAIL_MSG( wxT("mktime() failed") ); *this = wxInvalidDateTime; @@ -1107,27 +1141,35 @@ wxDateTime& wxDateTime::Set(wxDateTime_t hour, wxDateTime_t second, wxDateTime_t millisec) { - wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); - // we allow seconds to be 61 to account for the leap seconds, even if we // don't use them really wxDATETIME_CHECK( hour < 24 && second < 62 && minute < 60 && millisec < 1000, - _T("Invalid time in wxDateTime::Set()") ); + wxT("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, wxT("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); @@ -1141,18 +1183,16 @@ wxDateTime& wxDateTime::Set(wxDateTime_t day, wxDateTime_t second, wxDateTime_t millisec) { - wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); - wxDATETIME_CHECK( hour < 24 && second < 62 && minute < 60 && millisec < 1000, - _T("Invalid time in wxDateTime::Set()") ); + wxT("Invalid time in wxDateTime::Set()") ); ReplaceDefaultYearMonthWithCurrent(&year, &month); wxDATETIME_CHECK( (0 < day) && (day <= GetNumberOfDays(month, year)), - _T("Invalid date in wxDateTime::Set()") ); + wxT("Invalid date in wxDateTime::Set()") ); // the range of time_t type (inclusive) static const int yearMinInRange = 1970; @@ -1176,7 +1216,10 @@ wxDateTime& wxDateTime::Set(wxDateTime_t day, (void)Set(tm); // and finally adjust milliseconds - return SetMillisecond(millisec); + if (IsValid()) + SetMillisecond(millisec); + + return *this; } else { @@ -1189,7 +1232,7 @@ wxDateTime& wxDateTime::Set(wxDateTime_t day, m_time *= SECONDS_PER_DAY * TIME_T_FACTOR; // JDN corresponds to GMT, we take localtime - Add(wxTimeSpan(hour, minute, second + GetTimeZone(), millisec)); + Add(wxTimeSpan(hour, minute, second + wxGetTimeZone(), millisec)); } return *this; @@ -1201,9 +1244,9 @@ wxDateTime& wxDateTime::Set(double jdn) // EPOCH_JDN + 0.5 jdn -= EPOCH_JDN + 0.5; - jdn *= MILLISECONDS_PER_DAY; + 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; } @@ -1225,41 +1268,131 @@ wxDateTime& wxDateTime::ResetTime() return *this; } +wxDateTime wxDateTime::GetDateOnly() const +{ + Tm tm = GetTm(); + tm.msec = + tm.sec = + tm.min = + tm.hour = 0; + return wxDateTime(tm); +} + +// ---------------------------------------------------------------------------- +// DOS Date and Time Format functions +// ---------------------------------------------------------------------------- +// the dos date and time value is an unsigned 32 bit value in the format: +// YYYYYYYMMMMDDDDDhhhhhmmmmmmsssss +// +// Y = year offset from 1980 (0-127) +// M = month (1-12) +// D = day of month (1-31) +// h = hour (0-23) +// m = minute (0-59) +// s = bisecond (0-29) each bisecond indicates two seconds +// ---------------------------------------------------------------------------- + +wxDateTime& wxDateTime::SetFromDOS(unsigned long ddt) +{ + struct tm tm; + InitTm(tm); + + long year = ddt & 0xFE000000; + year >>= 25; + year += 80; + tm.tm_year = year; + + long month = ddt & 0x1E00000; + month >>= 21; + month -= 1; + tm.tm_mon = month; + + long day = ddt & 0x1F0000; + day >>= 16; + tm.tm_mday = day; + + long hour = ddt & 0xF800; + hour >>= 11; + tm.tm_hour = hour; + + long minute = ddt & 0x7E0; + minute >>= 5; + tm.tm_min = minute; + + long second = ddt & 0x1F; + tm.tm_sec = second * 2; + + return Set(mktime(&tm)); +} + +unsigned long wxDateTime::GetAsDOS() const +{ + unsigned long ddt; + time_t ticks = GetTicks(); + struct tm tmstruct; + struct tm *tm = wxLocaltime_r(&ticks, &tmstruct); + wxCHECK_MSG( tm, ULONG_MAX, wxT("time can't be represented in DOS format") ); + + long year = tm->tm_year; + year -= 80; + year <<= 25; + + long month = tm->tm_mon; + month += 1; + month <<= 21; + + long day = tm->tm_mday; + day <<= 16; + + long hour = tm->tm_hour; + hour <<= 11; + + long minute = tm->tm_min; + minute <<= 5; + + long second = tm->tm_sec; + second /= 2; + + ddt = year | month | day | hour | minute | second; + return ddt; +} + // ---------------------------------------------------------------------------- // time_t <-> broken down time conversions // ---------------------------------------------------------------------------- wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const { - wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); + wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime") ); time_t time = GetTicks(); if ( time != (time_t)-1 ) { // use C RTL functions + struct tm tmstruct; tm *tm; - if ( tz.GetOffset() == -GetTimeZone() ) + if ( tz.GetOffset() == -wxGetTimeZone() ) { // 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(), wxT("wxLocaltime_r() failed") ); } else { time += (time_t)tz.GetOffset(); -#ifdef __VMS__ // time is unsigned so avoid warning +#if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning int time2 = (int) time; if ( time2 >= 0 ) #else 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(), wxT("wxGmtime_r() failed") ); } else { @@ -1302,7 +1435,7 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const // CREDIT: code below is by Scott E. Lee (but bugs are mine) - wxASSERT_MSG( jdn > -2, _T("JDN out of range") ); + wxASSERT_MSG( jdn > -2, wxT("JDN out of range") ); // calculate the century long temp = (jdn + JDN_OFFSET) * 4 - 1; @@ -1333,35 +1466,34 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const year -= 4800; // check that the algorithm gave us something reasonable - wxASSERT_MSG( (0 < month) && (month <= 12), _T("invalid month") ); - wxASSERT_MSG( (1 <= day) && (day < 32), _T("invalid day") ); - wxASSERT_MSG( (INT_MIN <= year) && (year <= INT_MAX), - _T("year range overflow") ); + wxASSERT_MSG( (0 < month) && (month <= 12), wxT("invalid month") ); + wxASSERT_MSG( (1 <= day) && (day < 32), wxT("invalid day") ); // construct Tm from these values Tm tm; tm.year = (int)year; + tm.yday = (wxDateTime_t)(dayOfYear - 1); // use C convention for day number tm.mon = (Month)(month - 1); // algorithm yields 1 for January, not 0 tm.mday = (wxDateTime_t)day; tm.msec = (wxDateTime_t)(timeOnly % 1000); 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; } wxDateTime& wxDateTime::SetYear(int year) { - wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); + wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime") ); Tm tm(GetTm()); tm.year = year; @@ -1372,7 +1504,7 @@ wxDateTime& wxDateTime::SetYear(int year) wxDateTime& wxDateTime::SetMonth(Month month) { - wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); + wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime") ); Tm tm(GetTm()); tm.mon = month; @@ -1383,7 +1515,7 @@ wxDateTime& wxDateTime::SetMonth(Month month) wxDateTime& wxDateTime::SetDay(wxDateTime_t mday) { - wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); + wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime") ); Tm tm(GetTm()); tm.mday = mday; @@ -1394,7 +1526,7 @@ wxDateTime& wxDateTime::SetDay(wxDateTime_t mday) wxDateTime& wxDateTime::SetHour(wxDateTime_t hour) { - wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); + wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime") ); Tm tm(GetTm()); tm.hour = hour; @@ -1405,7 +1537,7 @@ wxDateTime& wxDateTime::SetHour(wxDateTime_t hour) wxDateTime& wxDateTime::SetMinute(wxDateTime_t min) { - wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); + wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime") ); Tm tm(GetTm()); tm.min = min; @@ -1416,7 +1548,7 @@ wxDateTime& wxDateTime::SetMinute(wxDateTime_t min) wxDateTime& wxDateTime::SetSecond(wxDateTime_t sec) { - wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); + wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime") ); Tm tm(GetTm()); tm.sec = sec; @@ -1427,7 +1559,7 @@ wxDateTime& wxDateTime::SetSecond(wxDateTime_t sec) wxDateTime& wxDateTime::SetMillisecond(wxDateTime_t millisecond) { - wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") ); + wxASSERT_MSG( IsValid(), wxT("invalid wxDateTime") ); // we don't need to use GetTm() for this one m_time -= m_time % 1000l; @@ -1465,31 +1597,125 @@ wxDateTime& wxDateTime::Add(const wxDateSpan& diff) Set(tm); wxASSERT_MSG( IsSameTime(tm), - _T("Add(wxDateSpan) shouldn't modify time") ); + wxT("Add(wxDateSpan) shouldn't modify time") ); return *this; } +wxDateSpan wxDateTime::DiffAsDateSpan(const wxDateTime& dt) const +{ + wxASSERT_MSG( IsValid() && dt.IsValid(), wxT("invalid wxDateTime")); + + // If dt is larger than this, calculations below needs to be inverted. + int inv = 1; + if ( dt > *this ) + inv = -1; + + int y = GetYear() - dt.GetYear(); + int m = GetMonth() - dt.GetMonth(); + int d = GetDay() - dt.GetDay(); + + // If month diff is negative, dt is the year before, so decrease year + // and set month diff to its inverse, e.g. January - December should be 1, + // not -11. + if ( m * inv < 0 || (m == 0 && d * inv < 0)) + { + m += inv * MONTHS_IN_YEAR; + y -= inv; + } + + // Same logic for days as for months above. + if ( d * inv < 0 ) + { + // Use number of days in month from the month which end date we're + // crossing. That is month before this for positive diff, and this + // month for negative diff. + // If we're on january and using previous month, we get december + // previous year, but don't care, december has same amount of days + // every year. + wxDateTime::Month monthfordays = GetMonth(); + if (inv > 0 && monthfordays == wxDateTime::Jan) + monthfordays = wxDateTime::Dec; + else if (inv > 0) + monthfordays = static_cast(monthfordays - 1); + + d += inv * wxDateTime::GetNumberOfDays(monthfordays, GetYear()); + m -= inv; + } + + int w = d / DAYS_PER_WEEK; + + // Remove weeks from d, since wxDateSpan only keep days as the ones + // not in complete weeks + d -= w * DAYS_PER_WEEK; + + return wxDateSpan(y, m, w, d); +} + // ---------------------------------------------------------------------------- // Weekday and monthday stuff // ---------------------------------------------------------------------------- -bool wxDateTime::SetToTheWeek(wxDateTime_t numWeek, WeekDay weekday) +// convert Sun, Mon, ..., Sat into 6, 0, ..., 5 +static inline int ConvertWeekDayToMondayBase(int wd) { - int year = GetYear(); + return wd == wxDateTime::Sun ? 6 : wd - 1; +} + +/* static */ +wxDateTime +wxDateTime::SetToWeekOfYear(int year, wxDateTime_t numWeek, WeekDay wd) +{ + wxASSERT_MSG( numWeek > 0, + wxT("invalid week number: weeks are counted from 1") ); + + // Jan 4 always lies in the 1st week of the year + wxDateTime dt(4, Jan, year); + dt.SetToWeekDayInSameWeek(wd); + dt += wxDateSpan::Weeks(numWeek - 1); + + return dt; +} +#if WXWIN_COMPATIBILITY_2_6 +// use a separate function to avoid warnings about using deprecated +// SetToTheWeek in GetWeek below +static wxDateTime +SetToTheWeek(int year, + wxDateTime::wxDateTime_t numWeek, + wxDateTime::WeekDay weekday, + wxDateTime::WeekFlags flags) +{ // Jan 4 always lies in the 1st week of the year - Set(4, Jan, year); - SetToWeekDayInSameWeek(weekday) += wxDateSpan::Weeks(numWeek); + wxDateTime dt(4, wxDateTime::Jan, year); + dt.SetToWeekDayInSameWeek(weekday, flags); + dt += wxDateSpan::Weeks(numWeek - 1); + + return dt; +} +bool wxDateTime::SetToTheWeek(wxDateTime_t numWeek, + WeekDay weekday, + WeekFlags flags) +{ + int year = GetYear(); + *this = ::SetToTheWeek(year, numWeek, weekday, flags); if ( GetYear() != year ) { // oops... numWeek was too big - return FALSE; + return false; } - return TRUE; + return true; +} + +wxDateTime wxDateTime::GetWeek(wxDateTime_t numWeek, + WeekDay weekday, + WeekFlags flags) const +{ + return ::SetToTheWeek(GetYear(), numWeek, weekday, flags); } +#endif // WXWIN_COMPATIBILITY_2_6 wxDateTime& wxDateTime::SetToLastMonthDay(Month month, int year) @@ -1503,29 +1729,49 @@ wxDateTime& wxDateTime::SetToLastMonthDay(Month month, return Set(GetNumOfDaysInMonth(year, month), month, year); } -wxDateTime& wxDateTime::SetToWeekDayInSameWeek(WeekDay weekday) +wxDateTime& wxDateTime::SetToWeekDayInSameWeek(WeekDay weekday, WeekFlags flags) { - wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); + wxDATETIME_CHECK( weekday != Inv_WeekDay, wxT("invalid weekday") ); - WeekDay wdayThis = GetWeekDay(); - if ( weekday == wdayThis ) + int wdayDst = weekday, + wdayThis = GetWeekDay(); + if ( wdayDst == wdayThis ) { // nothing to do return *this; } - else if ( weekday < wdayThis ) + + if ( flags == Default_First ) + { + flags = GetCountry() == USA ? Sunday_First : Monday_First; + } + + // 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 ( 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 ( 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)); } } wxDateTime& wxDateTime::SetToNextWeekDay(WeekDay weekday) { - wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); + wxDATETIME_CHECK( weekday != Inv_WeekDay, wxT("invalid weekday") ); int diff; WeekDay wdayThis = GetWeekDay(); @@ -1549,7 +1795,7 @@ wxDateTime& wxDateTime::SetToNextWeekDay(WeekDay weekday) wxDateTime& wxDateTime::SetToPrevWeekDay(WeekDay weekday) { - wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") ); + wxDATETIME_CHECK( weekday != Inv_WeekDay, wxT("invalid weekday") ); int diff; WeekDay wdayThis = GetWeekDay(); @@ -1576,9 +1822,9 @@ bool wxDateTime::SetToWeekDay(WeekDay weekday, Month month, int year) { - wxCHECK_MSG( weekday != Inv_WeekDay, FALSE, _T("invalid weekday") ); + wxCHECK_MSG( weekday != Inv_WeekDay, false, wxT("invalid weekday") ); - // we don't check explicitly that -5 <= n <= 5 because we will return FALSE + // we don't check explicitly that -5 <= n <= 5 because we will return false // anyhow in such case - but may be should still give an assert for it? // take the current month/year if none specified @@ -1630,1967 +1876,212 @@ bool wxDateTime::SetToWeekDay(WeekDay weekday, { *this = dt; - return TRUE; + return true; } else { // no such day in this month - return FALSE; + return false; } } -wxDateTime::wxDateTime_t wxDateTime::GetDayOfYear(const TimeZone& tz) const +static inline +wxDateTime::wxDateTime_t GetDayOfYearFromTm(const wxDateTime::Tm& tm) { - Tm tm(GetTm(tz)); + return (wxDateTime::wxDateTime_t)(gs_cumulatedDays[wxDateTime::IsLeapYear(tm.year)][tm.mon] + tm.mday); +} - return gs_cumulatedDays[IsLeapYear(tm.year)][tm.mon] + tm.mday; +wxDateTime::wxDateTime_t wxDateTime::GetDayOfYear(const TimeZone& tz) const +{ + return GetDayOfYearFromTm(GetTm(tz)); } -wxDateTime::wxDateTime_t wxDateTime::GetWeekOfYear(wxDateTime::WeekFlags flags, - const TimeZone& tz) const +wxDateTime::wxDateTime_t +wxDateTime::GetWeekOfYear(wxDateTime::WeekFlags flags, const TimeZone& tz) const { if ( flags == Default_First ) { flags = GetCountry() == USA ? Sunday_First : Monday_First; } - wxDateTime_t nDayInYear = GetDayOfYear(tz); - wxDateTime_t week; + Tm tm(GetTm(tz)); + wxDateTime_t nDayInYear = GetDayOfYearFromTm(tm); - WeekDay wd = GetWeekDay(tz); + int wdTarget = GetWeekDay(tz); + int wdYearStart = wxDateTime(1, Jan, GetYear()).GetWeekDay(); + int week; if ( flags == Sunday_First ) { - week = (nDayInYear - wd + 7) / 7; + // FIXME: First week is not calculated correctly. + week = (nDayInYear - wdTarget + 7) / 7; + if ( wdYearStart == Wed || wdYearStart == Thu ) + week++; } - else + else // week starts with monday { - // have to shift the week days values - week = (nDayInYear - (wd - 1 + 7) % 7 + 7) / 7; - } + // adjust the weekdays to non-US style. + wdYearStart = ConvertWeekDayToMondayBase(wdYearStart); - // FIXME some more elegant way?? - WeekDay wdYearStart = wxDateTime(1, Jan, GetYear()).GetWeekDay(); - if ( wdYearStart == Wed || wdYearStart == Thu ) - { - week++; - } + // quoting from http://www.cl.cam.ac.uk/~mgk25/iso-time.html: + // + // Week 01 of a year is per definition the first week that has the + // Thursday in this year, which is equivalent to the week that + // contains the fourth day of January. In other words, the first + // week of a new year is the week that has the majority of its + // days in the new year. Week 01 might also contain days from the + // previous year and the week before week 01 of a year is the last + // week (52 or 53) of the previous year even if it contains days + // from the new year. A week starts with Monday (day 1) and ends + // with Sunday (day 7). + // - return week; -} + // if Jan 1 is Thursday or less, it is in the first week of this year + int dayCountFix = wdYearStart < 4 ? 6 : -1; -wxDateTime::wxDateTime_t wxDateTime::GetWeekOfMonth(wxDateTime::WeekFlags flags, - const TimeZone& tz) const -{ - Tm tm = GetTm(tz); - wxDateTime dtMonthStart = wxDateTime(1, tm.mon, tm.year); - int nWeek = GetWeekOfYear(flags) - dtMonthStart.GetWeekOfYear(flags) + 1; - if ( nWeek < 0 ) - { - // this may happen for January when Jan, 1 is the last week of the - // previous year - nWeek += IsLeapYear(tm.year - 1) ? 53 : 52; - } - - return (wxDateTime::wxDateTime_t)nWeek; -} - -wxDateTime& wxDateTime::SetToYearDay(wxDateTime::wxDateTime_t yday) -{ - int year = GetYear(); - wxDATETIME_CHECK( (0 < yday) && (yday <= GetNumberOfDays(year)), - _T("invalid year day") ); - - bool isLeap = IsLeapYear(year); - for ( Month mon = Jan; mon < Inv_Month; wxNextMonth(mon) ) - { - // for Dec, we can't compare with gs_cumulatedDays[mon + 1], but we - // don't need it neither - because of the CHECK above we know that - // yday lies in December then - if ( (mon == Dec) || (yday < gs_cumulatedDays[isLeap][mon + 1]) ) - { - Set(yday - gs_cumulatedDays[isLeap][mon], mon, year); - - break; - } - } - - return *this; -} - -// ---------------------------------------------------------------------------- -// Julian day number conversion and related stuff -// ---------------------------------------------------------------------------- - -double wxDateTime::GetJulianDayNumber() const -{ - // JDN are always expressed for the GMT dates - Tm tm(ToTimezone(GMT0).GetTm(GMT0)); - - 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; -} - -double wxDateTime::GetRataDie() const -{ - // March 1 of the year 0 is Rata Die day -306 and JDN 1721119.5 - return GetJulianDayNumber() - 1721119.5 - 306; -} - -// ---------------------------------------------------------------------------- -// timezone and DST stuff -// ---------------------------------------------------------------------------- - -int wxDateTime::IsDST(wxDateTime::Country country) const -{ - wxCHECK_MSG( country == Country_Default, -1, - _T("country support not implemented") ); - - // use the C RTL for the dates in the standard range - time_t timet = GetTicks(); - if ( timet != (time_t)-1 ) - { - tm *tm = localtime(&timet); - - wxCHECK_MSG( tm, -1, _T("localtime() failed") ); - - return tm->tm_isdst; - } - else - { - int year = GetYear(); - - if ( !IsDSTApplicable(year, country) ) - { - // no DST time in this year in this country - return -1; - } - - return IsBetween(GetBeginDST(year, country), GetEndDST(year, country)); - } -} - -wxDateTime& wxDateTime::MakeTimezone(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)); -} - -// ---------------------------------------------------------------------------- -// wxDateTime to/from text representations -// ---------------------------------------------------------------------------- - -wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const -{ - wxCHECK_MSG( format, _T(""), _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 - time_t time = GetTicks(); - if ( (time != (time_t)-1) && !wxStrstr(format, _T("%l")) ) - { - // use strftime() - tm *tm; - if ( tz.GetOffset() == -GetTimeZone() ) - { - // we are working with local time - tm = localtime(&time); - - // should never happen - wxCHECK_MSG( tm, wxEmptyString, _T("localtime() failed") ); - } - else - { - time += (int)tz.GetOffset(); - -#ifdef __VMS__ // time is unsigned so avoid the warning - int time2 = (int) time; - if ( time2 >= 0 ) -#else - if ( time >= 0 ) -#endif - { - tm = gmtime(&time); - - // should never happen - wxCHECK_MSG( tm, wxEmptyString, _T("gmtime() failed") ); - } - else - { - tm = (struct tm *)NULL; - } - } - - if ( tm ) - { - return CallStrftime(format, tm); - } - //else: use generic code below - } - - // we only parse ANSI C format specifications here, no POSIX 2 - // complications, no GNU extensions but we do add support for a "%l" format - // specifier allowing to get the number of milliseconds - Tm tm = GetTm(tz); - - // used for calls to strftime() when we only deal with time - struct tm tmTimeOnly; - tmTimeOnly.tm_hour = tm.hour; - tmTimeOnly.tm_min = tm.min; - tmTimeOnly.tm_sec = tm.sec; - tmTimeOnly.tm_wday = 0; - tmTimeOnly.tm_yday = 0; - tmTimeOnly.tm_mday = 1; // any date will do - tmTimeOnly.tm_mon = 0; - tmTimeOnly.tm_year = 76; - tmTimeOnly.tm_isdst = 0; // no DST, we adjust for tz ourselves - - wxString tmp, res, fmt; - for ( const wxChar *p = format; *p; p++ ) - { - if ( *p != _T('%') ) - { - // copy as is - res += *p; - - continue; - } - - // set the default format - switch ( *++p ) - { - case _T('Y'): // year has 4 digits - fmt = _T("%04d"); - break; - - case _T('j'): // day of year has 3 digits - case _T('l'): // milliseconds have 3 digits - fmt = _T("%03d"); - break; - - default: - // it's either another valid format specifier in which case - // the format is "%02d" (for all the rest) or we have the - // field width preceding the format in which case it will - // override the default format anyhow - fmt = _T("%02d"); - } - - bool restart = TRUE; - while ( restart ) - { - restart = FALSE; - - // start of the format specification - switch ( *p ) - { - case _T('a'): // a weekday name - case _T('A'): - // second parameter should be TRUE for abbreviated names - res += GetWeekDayName(tm.GetWeekDay(), - *p == _T('a') ? Name_Abbr : Name_Full); - break; - - case _T('b'): // a month name - case _T('B'): - res += GetMonthName(tm.mon, - *p == _T('b') ? Name_Abbr : Name_Full); - break; - - case _T('c'): // locale default date and time representation - case _T('x'): // locale default date representation - // - // the problem: there is no way to know what do these format - // specifications correspond to for the current locale. - // - // the solution: use a hack and still use strftime(): first - // 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 - // 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! - // - // the bugs: we assume that neither of %c nor %x contains any - // fields which may change between the YEAR and real year. For - // example, the week number (%U, %W) and the day number (%j) - // will change if one of these years is leap and the other one - // is not! - { - // find the YEAR: normally, for any year X, Jan 1 or the - // year X + 28 is the same weekday as Jan 1 of X (because - // the weekday advances by 1 for each normal X and by 2 - // for each leap X, hence by 5 every 4 years or by 35 - // which is 0 mod 7 every 28 years) but this rule breaks - // down if there are years between X and Y which are - // divisible by 4 but not leap (i.e. divisible by 100 but - // not 400), hence the correction. - - int yearReal = GetYear(tz); - int mod28 = yearReal % 28; - - // be careful to not go too far - we risk to leave the - // supported range - int year; - if ( mod28 < 10 ) - { - year = 1988 + mod28; // 1988 == 0 (mod 28) - } - else - { - year = 1970 + mod28 - 10; // 1970 == 10 (mod 28) - } - - int nCentury = year / 100, - nCenturyReal = yearReal / 100; - - // need to adjust for the years divisble by 400 which are - // not leap but are counted like leap ones if we just take - // the number of centuries in between for nLostWeekDays - int nLostWeekDays = (nCentury - nCenturyReal) - - (nCentury / 4 - nCenturyReal / 4); - - // we have to gain back the "lost" weekdays: note that the - // effect of this loop is to not do anything to - // nLostWeekDays (which we won't use any more), but to - // (indirectly) set the year correctly - while ( (nLostWeekDays % 7) != 0 ) - { - nLostWeekDays += year++ % 4 ? 1 : 2; - } - - // at any rate, we couldn't go further than 1988 + 9 + 28! - wxASSERT_MSG( year < 2030, - _T("logic error in wxDateTime::Format") ); - - wxString strYear, strYear2; - 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 ) - { - replacement << (wxChar)-1; - } - - 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; - - // use strftime() to format the same date but in supported - // year - // - // NB: we assume that strftime() doesn't check for the - // date validity and will happily format the date - // corresponding to Feb 29 of a non leap year (which - // may happen if yearReal was leap and year is not) - struct tm tmAdjusted; - InitTm(tmAdjusted); - tmAdjusted.tm_hour = tm.hour; - tmAdjusted.tm_min = tm.min; - tmAdjusted.tm_sec = tm.sec; - tmAdjusted.tm_wday = tm.GetWeekDay(); - tmAdjusted.tm_yday = GetDayOfYear(); - tmAdjusted.tm_mday = tm.mday; - tmAdjusted.tm_mon = tm.mon; - tmAdjusted.tm_year = year - 1900; - tmAdjusted.tm_isdst = 0; // no DST, already adjusted - wxString str = CallStrftime(*p == _T('c') ? _T("%c") - : _T("%x"), - &tmAdjusted); - - // now replace the occurence of 1999 with the real year - wxString strYearReal, strYearReal2; - strYearReal.Printf(_T("%04d"), yearReal); - strYearReal2.Printf(_T("%02d"), yearReal % 100); - str.Replace(strYear, strYearReal); - str.Replace(strYear2, strYearReal2); - - // and replace back all occurences of replacement string - if ( wasReplaced ) - { - str.Replace(replacement2, strYear2); - str.Replace(replacement, strYear); - } - - res += str; - } - break; - - case _T('d'): // day of a month (01-31) - res += wxString::Format(fmt, tm.mday); - break; - - case _T('H'): // hour in 24h format (00-23) - res += wxString::Format(fmt, tm.hour); - break; - - case _T('I'): // hour in 12h format (01-12) - { - // 24h -> 12h, 0h -> 12h too - int hour12 = tm.hour > 12 ? tm.hour - 12 - : tm.hour ? tm.hour : 12; - res += wxString::Format(fmt, hour12); - } - break; - - case _T('j'): // day of the year - res += wxString::Format(fmt, GetDayOfYear(tz)); - break; - - case _T('l'): // milliseconds (NOT STANDARD) - res += wxString::Format(fmt, GetMillisecond(tz)); - break; - - case _T('m'): // month as a number (01-12) - res += wxString::Format(fmt, tm.mon + 1); - break; - - case _T('M'): // minute as a decimal number (00-59) - res += wxString::Format(fmt, tm.min); - break; - - case _T('p'): // AM or PM string - res += CallStrftime(_T("%p"), &tmTimeOnly); - break; - - case _T('S'): // second as a decimal number (00-61) - res += wxString::Format(fmt, tm.sec); - break; - - case _T('U'): // week number in the year (Sunday 1st week day) - res += wxString::Format(fmt, GetWeekOfYear(Sunday_First, tz)); - break; - - case _T('W'): // week number in the year (Monday 1st week day) - res += wxString::Format(fmt, GetWeekOfYear(Monday_First, tz)); - break; - - case _T('w'): // weekday as a number (0-6), Sunday = 0 - res += wxString::Format(fmt, tm.GetWeekDay()); - break; - - // case _T('x'): -- handled with "%c" - - case _T('X'): // locale default time representation - // just use strftime() to format the time for us - res += CallStrftime(_T("%X"), &tmTimeOnly); - break; - - case _T('y'): // year without century (00-99) - res += wxString::Format(fmt, tm.year % 100); - break; - - case _T('Y'): // year with century - res += wxString::Format(fmt, tm.year); - break; - - case _T('Z'): // timezone name - res += CallStrftime(_T("%Z"), &tmTimeOnly); - break; - - default: - // is it the format width? - fmt.Empty(); - while ( *p == _T('-') || *p == _T('+') || - *p == _T(' ') || wxIsdigit(*p) ) - { - fmt += *p; - } - - if ( !fmt.IsEmpty() ) - { - // we've only got the flags and width so far in fmt - fmt.Prepend(_T('%')); - fmt.Append(_T('d')); - - restart = TRUE; - - break; - } - - // no, it wasn't the width - wxFAIL_MSG(_T("unknown format specificator")); - - // fall through and just copy it nevertheless - - case _T('%'): // a percent sign - res += *p; - break; - - case 0: // the end of string - wxFAIL_MSG(_T("missing format at the end of string")); - - // just put the '%' which was the last char in format - res += _T('%'); - break; - } - } - } - - return res; -} - -// this function parses a string in (strict) RFC 822 format: see the section 5 -// of the RFC for the detailed description, but briefly it's something of the -// form "Sat, 18 Dec 1999 00:48:30 +0100" -// -// this function is "strict" by design - it must reject anything except true -// RFC822 time specs. -// -// TODO a great candidate for using reg exps -const wxChar *wxDateTime::ParseRfc822Date(const wxChar* date) -{ - wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); - - const wxChar *p = date; - const wxChar *comma = wxStrchr(p, _T(',')); - if ( comma ) - { - // the part before comma is the weekday - - // skip it for now - we don't use but might check that it really - // corresponds to the specfied date - p = comma + 1; - - if ( *p != _T(' ') ) - { - wxLogDebug(_T("no space after weekday in RFC822 time spec")); - - return (wxChar *)NULL; - } - - p++; // skip space - } - - // the following 1 or 2 digits are the day number - if ( !wxIsdigit(*p) ) - { - wxLogDebug(_T("day number expected in RFC822 time spec, none found")); - - return (wxChar *)NULL; - } - - wxDateTime_t day = *p++ - _T('0'); - if ( wxIsdigit(*p) ) - { - day *= 10; - day += *p++ - _T('0'); - } - - if ( *p++ != _T(' ') ) - { - return (wxChar *)NULL; - } - - // the following 3 letters specify the month - wxString monName(p, 3); - Month mon; - if ( monName == _T("Jan") ) - mon = Jan; - else if ( monName == _T("Feb") ) - mon = Feb; - else if ( monName == _T("Mar") ) - mon = Mar; - else if ( monName == _T("Apr") ) - mon = Apr; - else if ( monName == _T("May") ) - mon = May; - else if ( monName == _T("Jun") ) - mon = Jun; - else if ( monName == _T("Jul") ) - mon = Jul; - else if ( monName == _T("Aug") ) - mon = Aug; - else if ( monName == _T("Sep") ) - mon = Sep; - else if ( monName == _T("Oct") ) - mon = Oct; - else if ( monName == _T("Nov") ) - mon = Nov; - else if ( monName == _T("Dec") ) - mon = Dec; - else - { - wxLogDebug(_T("Invalid RFC 822 month name '%s'"), monName.c_str()); - - return (wxChar *)NULL; - } - - p += 3; - - if ( *p++ != _T(' ') ) - { - return (wxChar *)NULL; - } - - // next is the year - if ( !wxIsdigit(*p) ) - { - // no year? - return (wxChar *)NULL; - } - - int year = *p++ - _T('0'); - - if ( !wxIsdigit(*p) ) - { - // should have at least 2 digits in the year - return (wxChar *)NULL; - } - - year *= 10; - year += *p++ - _T('0'); - - // is it a 2 digit year (as per original RFC 822) or a 4 digit one? - if ( wxIsdigit(*p) ) - { - year *= 10; - year += *p++ - _T('0'); - - if ( !wxIsdigit(*p) ) - { - // no 3 digit years please - return (wxChar *)NULL; - } - - year *= 10; - year += *p++ - _T('0'); - } - - if ( *p++ != _T(' ') ) - { - return (wxChar *)NULL; - } - - // time is in the format hh:mm:ss and seconds are optional - if ( !wxIsdigit(*p) ) - { - return (wxChar *)NULL; - } - - wxDateTime_t hour = *p++ - _T('0'); - - if ( !wxIsdigit(*p) ) - { - return (wxChar *)NULL; - } - - hour *= 10; - hour += *p++ - _T('0'); - - if ( *p++ != _T(':') ) - { - return (wxChar *)NULL; - } - - if ( !wxIsdigit(*p) ) - { - return (wxChar *)NULL; - } - - wxDateTime_t min = *p++ - _T('0'); - - if ( !wxIsdigit(*p) ) - { - return (wxChar *)NULL; - } - - min *= 10; - min += *p++ - _T('0'); - - wxDateTime_t sec = 0; - if ( *p++ == _T(':') ) - { - if ( !wxIsdigit(*p) ) - { - return (wxChar *)NULL; - } - - sec = *p++ - _T('0'); - - if ( !wxIsdigit(*p) ) - { - return (wxChar *)NULL; - } - - sec *= 10; - sec += *p++ - _T('0'); - } - - if ( *p++ != _T(' ') ) - { - return (wxChar *)NULL; - } - - // and now the interesting part: the timezone - int offset; - if ( *p == _T('-') || *p == _T('+') ) - { - // the explicit offset given: it has the form of hhmm - bool plus = *p++ == _T('+'); - - if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) ) - { - return (wxChar *)NULL; - } - - // hours - offset = 60*(10*(*p - _T('0')) + (*(p + 1) - _T('0'))); - - p += 2; - - if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) ) - { - return (wxChar *)NULL; - } - - // minutes - offset += 10*(*p - _T('0')) + (*(p + 1) - _T('0')); - - if ( !plus ) - { - offset = -offset; - } - - p += 2; - } - else - { - // the symbolic timezone given: may be either military timezone or one - // of standard abbreviations - if ( !*(p + 1) ) - { - // military: Z = UTC, J unused, A = -1, ..., Y = +12 - static const int offsets[26] = - { - //A B C D E F G H I J K L M - -1, -2, -3, -4, -5, -6, -7, -8, -9, 0, -10, -11, -12, - //N O P R Q S T U V W Z Y Z - +1, +2, +3, +4, +5, +6, +7, +8, +9, +10, +11, +12, 0 - }; - - if ( *p < _T('A') || *p > _T('Z') || *p == _T('J') ) - { - wxLogDebug(_T("Invalid militaty timezone '%c'"), *p); - - return (wxChar *)NULL; - } - - offset = offsets[*p++ - _T('A')]; - } - else - { - // abbreviation - wxString tz = p; - if ( tz == _T("UT") || tz == _T("UTC") || tz == _T("GMT") ) - offset = 0; - else if ( tz == _T("AST") ) - offset = AST - GMT0; - else if ( tz == _T("ADT") ) - offset = ADT - GMT0; - else if ( tz == _T("EST") ) - offset = EST - GMT0; - else if ( tz == _T("EDT") ) - offset = EDT - GMT0; - else if ( tz == _T("CST") ) - offset = CST - GMT0; - else if ( tz == _T("CDT") ) - offset = CDT - GMT0; - else if ( tz == _T("MST") ) - offset = MST - GMT0; - else if ( tz == _T("MDT") ) - offset = MDT - GMT0; - else if ( tz == _T("PST") ) - offset = PST - GMT0; - else if ( tz == _T("PDT") ) - offset = PDT - GMT0; - else - { - wxLogDebug(_T("Unknown RFC 822 timezone '%s'"), p); - - return (wxChar *)NULL; - } - - p += tz.length(); - } - - // make it minutes - offset *= 60; - } - - // the spec was correct - Set(day, mon, year, hour, min, sec); - MakeTimezone((wxDateTime_t)(60*offset)); - - return p; -} - -const wxChar *wxDateTime::ParseFormat(const wxChar *date, - const wxChar *format, - const wxDateTime& dateDef) -{ - wxCHECK_MSG( date && format, (wxChar *)NULL, - _T("NULL pointer in wxDateTime::ParseFormat()") ); - - wxString str; - unsigned long num; - - // what fields have we found? - bool haveWDay = FALSE, - haveYDay = FALSE, - haveDay = FALSE, - haveMon = FALSE, - haveYear = FALSE, - haveHour = FALSE, - haveMin = FALSE, - haveSec = FALSE; - - bool hourIsIn12hFormat = FALSE, // or in 24h one? - isPM = FALSE; // AM by default - - // and the value of the items we have (init them to get rid of warnings) - wxDateTime_t sec = 0, - min = 0, - hour = 0; - WeekDay wday = Inv_WeekDay; - wxDateTime_t yday = 0, - mday = 0; - wxDateTime::Month mon = Inv_Month; - int year = 0; - - const wxChar *input = date; - for ( const wxChar *fmt = format; *fmt; fmt++ ) - { - if ( *fmt != _T('%') ) - { - if ( wxIsspace(*fmt) ) - { - // a white space in the format string matches 0 or more white - // spaces in the input - while ( wxIsspace(*input) ) - { - input++; - } - } - else // !space - { - // any other character (not whitespace, not '%') must be - // matched by itself in the input - if ( *input++ != *fmt ) - { - // no match - return (wxChar *)NULL; - } - } - - // done with this format char - continue; - } - - // start of a format specification - - // parse the optional width - size_t width = 0; - while ( isdigit(*++fmt) ) - { - width *= 10; - width += *fmt - _T('0'); - } - - // then the format itself - switch ( *fmt ) - { - case _T('a'): // a weekday name - case _T('A'): - { - int flag = *fmt == _T('a') ? Name_Abbr : Name_Full; - wday = GetWeekDayFromName(GetAlphaToken(input), flag); - if ( wday == Inv_WeekDay ) - { - // no match - return (wxChar *)NULL; - } - } - haveWDay = TRUE; - break; - - case _T('b'): // a month name - case _T('B'): - { - int flag = *fmt == _T('b') ? Name_Abbr : Name_Full; - mon = GetMonthFromName(GetAlphaToken(input), flag); - if ( mon == Inv_Month ) - { - // no match - return (wxChar *)NULL; - } - } - haveMon = TRUE; - break; - - case _T('c'): // locale default date and time representation - { - wxDateTime dt; - - // this is the format which corresponds to ctime() output - // and strptime("%c") should parse it, so try it first - static const wxChar *fmtCtime = _T("%a %b %d %H:%M:%S %Y"); - - const wxChar *result = dt.ParseFormat(input, fmtCtime); - if ( !result ) - { - result = dt.ParseFormat(input, _T("%x %X")); - } - - if ( !result ) - { - result = dt.ParseFormat(input, _T("%X %x")); - } - - if ( !result ) - { - // we've tried everything and still no match - return (wxChar *)NULL; - } - - Tm tm = dt.GetTm(); - - haveDay = haveMon = haveYear = - haveHour = haveMin = haveSec = TRUE; - - hour = tm.hour; - min = tm.min; - sec = tm.sec; - - year = tm.year; - mon = tm.mon; - mday = tm.mday; - - input = result; - } - break; - - case _T('d'): // day of a month (01-31) - if ( !GetNumericToken(width, input, &num) || - (num > 31) || (num < 1) ) - { - // no match - return (wxChar *)NULL; - } - - // we can't check whether the day range is correct yet, will - // do it later - assume ok for now - haveDay = TRUE; - mday = (wxDateTime_t)num; - break; - - case _T('H'): // hour in 24h format (00-23) - if ( !GetNumericToken(width, input, &num) || (num > 23) ) - { - // no match - return (wxChar *)NULL; - } - - haveHour = TRUE; - hour = (wxDateTime_t)num; - break; - - case _T('I'): // hour in 12h format (01-12) - if ( !GetNumericToken(width, input, &num) || !num || (num > 12) ) - { - // no match - return (wxChar *)NULL; - } - - haveHour = TRUE; - hourIsIn12hFormat = TRUE; - hour = (wxDateTime_t)(num % 12); // 12 should be 0 - break; - - case _T('j'): // day of the year - if ( !GetNumericToken(width, input, &num) || !num || (num > 366) ) - { - // no match - return (wxChar *)NULL; - } - - haveYDay = TRUE; - yday = (wxDateTime_t)num; - break; - - case _T('m'): // month as a number (01-12) - if ( !GetNumericToken(width, input, &num) || !num || (num > 12) ) - { - // no match - return (wxChar *)NULL; - } - - haveMon = TRUE; - mon = (Month)(num - 1); - break; - - case _T('M'): // minute as a decimal number (00-59) - if ( !GetNumericToken(width, input, &num) || (num > 59) ) - { - // no match - return (wxChar *)NULL; - } - - haveMin = TRUE; - min = (wxDateTime_t)num; - break; - - case _T('p'): // AM or PM string - { - wxString am, pm, token = GetAlphaToken(input); - - GetAmPmStrings(&am, &pm); - if ( token.CmpNoCase(pm) == 0 ) - { - isPM = TRUE; - } - else if ( token.CmpNoCase(am) != 0 ) - { - // no match - return (wxChar *)NULL; - } - } - break; - - case _T('r'): // time as %I:%M:%S %p - { - wxDateTime dt; - input = dt.ParseFormat(input, _T("%I:%M:%S %p")); - if ( !input ) - { - // no match - return (wxChar *)NULL; - } - - haveHour = haveMin = haveSec = TRUE; - - Tm tm = dt.GetTm(); - hour = tm.hour; - min = tm.min; - sec = tm.sec; - } - break; - - case _T('R'): // time as %H:%M - { - wxDateTime dt; - input = dt.ParseFormat(input, _T("%H:%M")); - if ( !input ) - { - // no match - return (wxChar *)NULL; - } - - haveHour = haveMin = TRUE; - - Tm tm = dt.GetTm(); - hour = tm.hour; - min = tm.min; - } - - case _T('S'): // second as a decimal number (00-61) - if ( !GetNumericToken(width, input, &num) || (num > 61) ) - { - // no match - return (wxChar *)NULL; - } - - haveSec = TRUE; - sec = (wxDateTime_t)num; - break; - - case _T('T'): // time as %H:%M:%S - { - wxDateTime dt; - input = dt.ParseFormat(input, _T("%H:%M:%S")); - if ( !input ) - { - // no match - return (wxChar *)NULL; - } - - haveHour = haveMin = haveSec = TRUE; - - Tm tm = dt.GetTm(); - hour = tm.hour; - min = tm.min; - sec = tm.sec; - } - break; - - case _T('w'): // weekday as a number (0-6), Sunday = 0 - if ( !GetNumericToken(width, input, &num) || (wday > 6) ) - { - // no match - return (wxChar *)NULL; - } - - haveWDay = TRUE; - wday = (WeekDay)num; - break; - - case _T('x'): // locale default date representation -#ifdef HAVE_STRPTIME - // try using strptime() - it may fail even if the input is - // correct but the date is out of range, so we will fall back - // to our generic code anyhow (FIXME !Unicode friendly) - { - struct tm tm; - const wxChar *result = strptime(input, "%x", &tm); - if ( result ) - { - input = result; - - haveDay = haveMon = haveYear = TRUE; - - year = 1900 + tm.tm_year; - mon = (Month)tm.tm_mon; - mday = tm.tm_mday; - - break; - } - } -#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 - { - fmtDate = _T("%m/%d/%y"); - fmtDateAlt = _T("%d/%m/%y"); - } - - const wxChar *result = dt.ParseFormat(input, fmtDate); - - if ( !result ) - { - // ok, be nice and try another one - result = dt.ParseFormat(input, fmtDateAlt); - } - - if ( !result ) - { - // bad luck - return (wxChar *)NULL; - } - - Tm tm = dt.GetTm(); - - haveDay = haveMon = haveYear = TRUE; - - year = tm.year; - mon = tm.mon; - mday = tm.mday; - - input = result; - } - - break; - - case _T('X'): // locale default time representation -#ifdef HAVE_STRPTIME - { - // use strptime() to do it for us (FIXME !Unicode friendly) - struct tm tm; - input = strptime(input, "%X", &tm); - if ( !input ) - { - return (wxChar *)NULL; - } - - haveHour = haveMin = haveSec = TRUE; - - hour = tm.tm_hour; - min = tm.tm_min; - sec = tm.tm_sec; - } -#else // !HAVE_STRPTIME - // TODO under Win32 we can query the LOCALE_ITIME system - // setting which says whether the default time format is - // 24 or 12 hour - { - // try to parse what follows as "%H:%M:%S" and, if this - // fails, as "%I:%M:%S %p" - this should catch the most - // common cases - wxDateTime dt; - - const wxChar *result = dt.ParseFormat(input, _T("%T")); - if ( !result ) - { - result = dt.ParseFormat(input, _T("%r")); - } - - if ( !result ) - { - // no match - return (wxChar *)NULL; - } - - haveHour = haveMin = haveSec = TRUE; - - Tm tm = dt.GetTm(); - hour = tm.hour; - min = tm.min; - sec = tm.sec; - - input = result; - } -#endif // HAVE_STRPTIME/!HAVE_STRPTIME - break; - - case _T('y'): // year without century (00-99) - if ( !GetNumericToken(width, input, &num) || (num > 99) ) - { - // no match - return (wxChar *)NULL; - } - - haveYear = TRUE; - - // TODO should have an option for roll over date instead of - // hard coding it here - year = (num > 30 ? 1900 : 2000) + (wxDateTime_t)num; - break; - - case _T('Y'): // year with century - if ( !GetNumericToken(width, input, &num) ) - { - // no match - return (wxChar *)NULL; - } - - haveYear = TRUE; - year = (wxDateTime_t)num; - break; - - case _T('Z'): // timezone name - wxFAIL_MSG(_T("TODO")); - break; - - case _T('%'): // a percent sign - if ( *input++ != _T('%') ) - { - // no match - return (wxChar *)NULL; - } - break; - - case 0: // the end of string - wxFAIL_MSG(_T("unexpected format end")); - - // fall through - - default: // not a known format spec - return (wxChar *)NULL; - } - } - - // format matched, try to construct a date from what we have now - Tm tmDef; - if ( dateDef.IsValid() ) - { - // take this date as default - tmDef = dateDef.GetTm(); - } -#ifdef __WIN16__ - else if ( m_time != 0 ) -#else - else if ( m_time != wxLongLong(0) ) -#endif - { - // if this date is valid, don't change it - tmDef = GetTm(); - } - else - { - // no default and this date is invalid - fall back to Today() - tmDef = Today().GetTm(); - } - - Tm tm = tmDef; - - // set the date - if ( haveYear ) - { - tm.year = year; - } - - // TODO we don't check here that the values are consistent, if both year - // day and month/day were found, we just ignore the year day and we - // also always ignore the week day - if ( haveMon && haveDay ) - { - if ( mday > GetNumOfDaysInMonth(tm.year, mon) ) - { - wxLogDebug(_T("bad month day in wxDateTime::ParseFormat")); - - return (wxChar *)NULL; - } - - tm.mon = mon; - tm.mday = mday; - } - else if ( haveYDay ) - { - if ( yday > GetNumberOfDays(tm.year) ) - { - wxLogDebug(_T("bad year day in wxDateTime::ParseFormat")); - - return (wxChar *)NULL; - } - - Tm tm2 = wxDateTime(1, Jan, tm.year).SetToYearDay(yday).GetTm(); - - tm.mon = tm2.mon; - tm.mday = tm2.mday; - } - - // deal with AM/PM - if ( haveHour && hourIsIn12hFormat && isPM ) - { - // translate to 24hour format - hour += 12; - } - //else: either already in 24h format or no translation needed - - // set the time - if ( haveHour ) - { - tm.hour = hour; - } - - if ( haveMin ) - { - tm.min = min; - } - - if ( haveSec ) - { - tm.sec = sec; - } - - Set(tm); - - return input; -} - -const wxChar *wxDateTime::ParseDateTime(const wxChar *date) -{ - wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); - - // there is a public domain version of getdate.y, but it only works for - // English... - wxFAIL_MSG(_T("TODO")); - - return (wxChar *)NULL; -} - -const wxChar *wxDateTime::ParseDate(const wxChar *date) -{ - // this is a simplified version of ParseDateTime() which understands only - // "today" (for wxDate compatibility) and digits only otherwise (and not - // all esoteric constructions ParseDateTime() knows about) - - wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); - - const wxChar *p = date; - while ( wxIsspace(*p) ) - p++; - - // some special cases - static struct - { - const wxChar *str; - int dayDiffFromToday; - } literalDates[] = - { - { wxTRANSLATE("today"), 0 }, - { wxTRANSLATE("yesterday"), -1 }, - { wxTRANSLATE("tomorrow"), 1 }, - }; - - for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ ) - { - wxString date = wxGetTranslation(literalDates[n].str); - size_t len = date.length(); - if ( wxStrlen(p) >= len && (wxString(p, len).CmpNoCase(date) == 0) ) - { - // nothing can follow this, so stop here - p += len; - - int dayDiffFromToday = literalDates[n].dayDiffFromToday; - *this = Today(); - if ( dayDiffFromToday ) - { - *this += wxDateSpan::Days(dayDiffFromToday); - } - - return p; - } - } + // count the number of week + week = (nDayInYear + wdYearStart + dayCountFix) / DAYS_PER_WEEK; - // We try to guess what we have here: for each new (numeric) token, we - // determine if it can be a month, day or a year. Of course, there is an - // ambiguity as some numbers may be days as well as months, so we also - // have the ability to back track. - - // what do we have? - bool haveDay = FALSE, // the months day? - haveWDay = FALSE, // the day of week? - haveMon = FALSE, // the month? - haveYear = FALSE; // the year? - - // and the value of the items we have (init them to get rid of warnings) - WeekDay wday = Inv_WeekDay; - wxDateTime_t day = 0; - wxDateTime::Month mon = Inv_Month; - int year = 0; - - // tokenize the string - size_t nPosCur = 0; - static const wxChar *dateDelimiters = _T(".,/-\t\n "); - wxStringTokenizer tok(p, dateDelimiters); - while ( tok.HasMoreTokens() ) - { - wxString token = tok.GetNextToken(); - if ( !token ) - continue; - - // is it a number? - unsigned long val; - if ( token.ToULong(&val) ) + // check if we happen to be at the last week of previous year: + if ( week == 0 ) { - // guess what this number is - - bool isDay = FALSE, - isMonth = FALSE, - isYear = FALSE; - - if ( !haveMon && val > 0 && val <= 12 ) - { - // assume it is month - isMonth = TRUE; - } - else // not the month - { - wxDateTime_t maxDays = haveMon - ? GetNumOfDaysInMonth(haveYear ? year : Inv_Year, mon) - : 31; - - // can it be day? - if ( (val == 0) || (val > maxDays) ) - { - isYear = TRUE; - } - else - { - isDay = TRUE; - } - } - - if ( isYear ) - { - if ( haveYear ) - break; - - haveYear = TRUE; - - year = (wxDateTime_t)val; - } - else if ( isDay ) - { - if ( haveDay ) - break; - - haveDay = TRUE; - - day = (wxDateTime_t)val; - } - else if ( isMonth ) - { - haveMon = TRUE; - - mon = (Month)(val - 1); - } + week = wxDateTime(31, Dec, GetYear() - 1).GetWeekOfYear(); } - else // not a number + else if ( week == 53 ) { - // be careful not to overwrite the current mon value - Month mon2 = GetMonthFromName(token, Name_Full | Name_Abbr); - if ( mon2 != Inv_Month ) - { - // it's a month - if ( haveMon ) - { - // but we already have a month - maybe we guessed wrong? - if ( !haveDay ) - { - // no need to check in month range as always < 12, but - // the days are counted from 1 unlike the months - day = (wxDateTime_t)mon + 1; - haveDay = TRUE; - } - else - { - // could possible be the year (doesn't the year come - // before the month in the japanese format?) (FIXME) - break; - } - } - - mon = mon2; - - haveMon = TRUE; - } - else // not a valid month name - { - wday = GetWeekDayFromName(token, Name_Full | Name_Abbr); - if ( wday != Inv_WeekDay ) - { - // a week day - if ( haveWDay ) - { - break; - } + int wdYearEnd = (wdYearStart + 364 + IsLeapYear(GetYear())) + % DAYS_PER_WEEK; - haveWDay = TRUE; - } - else // not a valid weekday name - { - // try the ordinals - static const wxChar *ordinals[] = - { - wxTRANSLATE("first"), - wxTRANSLATE("second"), - wxTRANSLATE("third"), - wxTRANSLATE("fourth"), - wxTRANSLATE("fifth"), - wxTRANSLATE("sixth"), - wxTRANSLATE("seventh"), - wxTRANSLATE("eighth"), - wxTRANSLATE("ninth"), - wxTRANSLATE("tenth"), - wxTRANSLATE("eleventh"), - wxTRANSLATE("twelfth"), - wxTRANSLATE("thirteenth"), - wxTRANSLATE("fourteenth"), - wxTRANSLATE("fifteenth"), - wxTRANSLATE("sixteenth"), - wxTRANSLATE("seventeenth"), - wxTRANSLATE("eighteenth"), - wxTRANSLATE("nineteenth"), - wxTRANSLATE("twentieth"), - // that's enough - otherwise we'd have problems with - // composite (or not) ordinals - }; - - size_t n; - for ( n = 0; n < WXSIZEOF(ordinals); n++ ) - { - if ( token.CmpNoCase(ordinals[n]) == 0 ) - { - break; - } - } - - if ( n == WXSIZEOF(ordinals) ) - { - // stop here - something unknown - break; - } - - // it's a day - if ( haveDay ) - { - // don't try anything here (as in case of numeric day - // above) - the symbolic day spec should always - // precede the month/year - break; - } - - haveDay = TRUE; - - day = n + 1; - } - } + // Week 53 only if last day of year is Thursday or later. + if ( wdYearEnd < 3 ) + week = 1; } - - nPosCur = tok.GetPosition(); } - // either no more tokens or the scan was stopped by something we couldn't - // parse - in any case, see if we can construct a date from what we have - if ( !haveDay && !haveWDay ) - { - wxLogDebug(_T("ParseDate: no day, no weekday hence no date.")); + return (wxDateTime::wxDateTime_t)week; +} - return (wxChar *)NULL; - } +wxDateTime::wxDateTime_t wxDateTime::GetWeekOfMonth(wxDateTime::WeekFlags flags, + const TimeZone& tz) const +{ + Tm tm = GetTm(tz); + const wxDateTime dateFirst = wxDateTime(1, tm.mon, tm.year); + const wxDateTime::WeekDay wdFirst = dateFirst.GetWeekDay(); - if ( haveWDay && (haveMon || haveYear || haveDay) && - !(haveDay && haveMon && haveYear) ) + if ( flags == Default_First ) { - // 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; + flags = GetCountry() == USA ? Sunday_First : Monday_First; } - if ( !haveWDay && haveYear && !(haveDay && haveMon) ) - { - // may be we have month and day instead of day and year? - if ( haveDay && !haveMon ) - { - if ( day <= 12 ) - { - // exchange day and month - mon = (wxDateTime::Month)(day - 1); - - // we're in the current year then - if ( year <= GetNumOfDaysInMonth(Inv_Year, mon) ) - { - day = year; - - haveMon = TRUE; - haveYear = FALSE; - } - //else: no, can't exchange, leave haveMon == FALSE - } - } - - if ( !haveMon ) - { - // 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; - } - } + // compute offset of dateFirst from the beginning of the week + int firstOffset; + if ( flags == Sunday_First ) + firstOffset = wdFirst - Sun; + else + firstOffset = wdFirst == Sun ? DAYS_PER_WEEK - 1 : wdFirst - Mon; - if ( !haveMon ) - { - mon = GetCurrentMonth(); - } + return (wxDateTime::wxDateTime_t)((tm.mday - 1 + firstOffset)/7 + 1); +} - if ( !haveYear ) - { - year = GetCurrentYear(); - } +wxDateTime& wxDateTime::SetToYearDay(wxDateTime::wxDateTime_t yday) +{ + int year = GetYear(); + wxDATETIME_CHECK( (0 < yday) && (yday <= GetNumberOfDays(year)), + wxT("invalid year day") ); - if ( haveDay ) + bool isLeap = IsLeapYear(year); + for ( Month mon = Jan; mon < Inv_Month; wxNextMonth(mon) ) { - Set(day, mon, year); - - if ( haveWDay ) + // for Dec, we can't compare with gs_cumulatedDays[mon + 1], but we + // don't need it neither - because of the CHECK above we know that + // yday lies in December then + if ( (mon == Dec) || (yday <= gs_cumulatedDays[isLeap][mon + 1]) ) { - // check that it is really the same - if ( GetWeekDay() != wday ) - { - // inconsistency detected - wxLogDebug(_T("ParseDate: inconsistent day/weekday.")); + Set((wxDateTime::wxDateTime_t)(yday - gs_cumulatedDays[isLeap][mon]), mon, year); - return (wxChar *)NULL; - } + break; } } - else // haveWDay - { - *this = Today(); - SetToWeekDayInSameWeek(wday); - } + return *this; +} - // return the pointer to the first unparsed char - p += nPosCur; - if ( nPosCur && wxStrchr(dateDelimiters, *(p - 1)) ) - { - // if we couldn't parse the token after the delimiter, put back the - // delimiter as well - p--; - } +// ---------------------------------------------------------------------------- +// Julian day number conversion and related stuff +// ---------------------------------------------------------------------------- - return p; +double wxDateTime::GetJulianDayNumber() const +{ + return m_time.ToDouble() / MILLISECONDS_PER_DAY + EPOCH_JDN + 0.5; } -const wxChar *wxDateTime::ParseTime(const wxChar *time) +double wxDateTime::GetRataDie() const { - wxCHECK_MSG( time, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") ); + // March 1 of the year 0 is Rata Die day -306 and JDN 1721119.5 + return GetJulianDayNumber() - 1721119.5 - 306; +} - // first try some extra things - static const struct - { - const wxChar *name; - wxDateTime_t hour; - } stdTimes[] = - { - { wxTRANSLATE("noon"), 12 }, - { wxTRANSLATE("midnight"), 00 }, - // anything else? - }; +// ---------------------------------------------------------------------------- +// timezone and DST stuff +// ---------------------------------------------------------------------------- + +int wxDateTime::IsDST(wxDateTime::Country country) const +{ + wxCHECK_MSG( country == Country_Default, -1, + wxT("country support not implemented") ); - for ( size_t n = 0; n < WXSIZEOF(stdTimes); n++ ) + // use the C RTL for the dates in the standard range + time_t timet = GetTicks(); + if ( timet != (time_t)-1 ) { - wxString timeString = wxGetTranslation(stdTimes[n].name); - size_t len = timeString.length(); - if ( timeString.CmpNoCase(wxString(time, len)) == 0 ) - { - Set(stdTimes[n].hour, 0, 0); + struct tm tmstruct; + tm *tm = wxLocaltime_r(&timet, &tmstruct); - return time + len; - } - } + wxCHECK_MSG( tm, -1, wxT("wxLocaltime_r() failed") ); - // try all time formats we may think about starting with the standard one - const wxChar *result = ParseFormat(time, _T("%X")); - if ( !result ) - { - // normally, it's the same, but why not try it? - result = ParseFormat(time, _T("%H:%M:%S")); + return tm->tm_isdst; } - - if ( !result ) + else { - // 12hour with AM/PM? - result = ParseFormat(time, _T("%I:%M:%S %p")); - } + int year = GetYear(); - if ( !result ) - { - // without seconds? - result = ParseFormat(time, _T("%H:%M")); - } + if ( !IsDSTApplicable(year, country) ) + { + // no DST time in this year in this country + return -1; + } - if ( !result ) - { - // 12hour with AM/PM but without seconds? - result = ParseFormat(time, _T("%I:%M %p")); + return IsBetween(GetBeginDST(year, country), GetEndDST(year, country)); } +} - if ( !result ) - { - // just the hour? - result = ParseFormat(time, _T("%H")); - } +wxDateTime& wxDateTime::MakeTimezone(const TimeZone& tz, bool noDST) +{ + long secDiff = wxGetTimeZone() + tz.GetOffset(); - if ( !result ) + // 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) ) { - // just the hour and AM/PM? - result = ParseFormat(time, _T("%I %p")); + // FIXME we assume that the DST is always shifted by 1 hour + secDiff -= 3600; } - // TODO: parse timezones - - return result; + return Add(wxTimeSpan::Seconds(secDiff)); } -// ---------------------------------------------------------------------------- -// Workdays and holidays support -// ---------------------------------------------------------------------------- - -bool wxDateTime::IsWorkDay(Country WXUNUSED(country)) const +wxDateTime& wxDateTime::MakeFromTimezone(const TimeZone& tz, bool noDST) { - return !wxDateTimeHolidayAuthority::IsHoliday(*this); -} - -// ============================================================================ -// wxTimeSpan -// ============================================================================ - -// not all strftime(3) format specifiers make sense here because, for example, -// a time span doesn't have a year nor a timezone -// -// Here are the ones which are supported (all of them are supported by strftime -// as well): -// %H hour in 24 hour format -// %M minute (00 - 59) -// %S second (00 - 59) -// %% percent sign -// -// Also, for MFC CTimeSpan compatibility, we support -// %D number of days -// -// And, to be better than MFC :-), we also have -// %E number of wEeks -// %l milliseconds (000 - 999) -wxString wxTimeSpan::Format(const wxChar *format) const -{ - wxCHECK_MSG( format, _T(""), _T("NULL format in wxTimeSpan::Format") ); - - wxString str; - str.Alloc(wxStrlen(format)); - - // Suppose we have wxTimeSpan ts(1 /* hour */, 2 /* min */, 3 /* sec */) - // - // Then, of course, ts.Format("%H:%M:%S") must return "01:02:03", but the - // question is what should ts.Format("%S") do? The code here returns "3273" - // in this case (i.e. the total number of seconds, not just seconds % 60) - // because, for me, this call means "give me entire time interval in - // seconds" and not "give me the seconds part of the time interval" - // - // If we agree that it should behave like this, it is clear that the - // interpretation of each format specifier depends on the presence of the - // other format specs in the string: if there was "%H" before "%M", we - // should use GetMinutes() % 60, otherwise just GetMinutes() &c - - // we remember the most important unit found so far - enum TimeSpanPart - { - Part_Week, - Part_Day, - Part_Hour, - Part_Min, - Part_Sec, - Part_MSec - } partBiggest = Part_MSec; - - for ( const wxChar *pch = format; *pch; pch++ ) - { - wxChar ch = *pch; - - if ( ch == _T('%') ) - { - // the start of the format specification of the printf() below - wxString fmtPrefix = _T('%'); - - // the number - long n; - - ch = *++pch; // get the format spec char - switch ( ch ) - { - default: - wxFAIL_MSG( _T("invalid format character") ); - // fall through - - case _T('%'): - str += ch; - - // skip the part below switch - continue; - - case _T('D'): - n = GetDays(); - if ( partBiggest < Part_Day ) - { - n %= DAYS_PER_WEEK; - } - else - { - partBiggest = Part_Day; - } - break; - - case _T('E'): - partBiggest = Part_Week; - n = GetWeeks(); - break; - - case _T('H'): - n = GetHours(); - if ( partBiggest < Part_Hour ) - { - n %= HOURS_PER_DAY; - } - else - { - partBiggest = Part_Hour; - } - - fmtPrefix += _T("02"); - break; - - case _T('l'): - n = GetMilliseconds().ToLong(); - if ( partBiggest < Part_MSec ) - { - n %= 1000; - } - //else: no need to reset partBiggest to Part_MSec, it is - // the least significant one anyhow - - fmtPrefix += _T("03"); - break; - - case _T('M'): - n = GetMinutes(); - if ( partBiggest < Part_Min ) - { - n %= MIN_PER_HOUR; - } - else - { - partBiggest = Part_Min; - } - - fmtPrefix += _T("02"); - break; + long secDiff = wxGetTimeZone() + tz.GetOffset(); - case _T('S'): - n = GetSeconds().ToLong(); - if ( partBiggest < Part_Sec ) - { - n %= SEC_PER_MIN; - } - else - { - partBiggest = Part_Sec; - } - - fmtPrefix += _T("02"); - break; - } - - str += wxString::Format(fmtPrefix + _T("ld"), n); - } - else - { - // normal character, just copy - str += ch; - } + // 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 str; + return Subtract(wxTimeSpan::Seconds(secDiff)); } // ============================================================================ @@ -3599,7 +2090,7 @@ 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) @@ -3619,16 +2110,16 @@ wxHolidayAuthoritiesArray wxDateTimeHolidayAuthority::ms_authorities; /* static */ bool wxDateTimeHolidayAuthority::IsHoliday(const wxDateTime& dt) { - size_t count = ms_authorities.GetCount(); + size_t count = ms_authorities.size(); for ( size_t n = 0; n < count; n++ ) { if ( ms_authorities[n]->DoIsHoliday(dt) ) { - return TRUE; + return true; } } - return FALSE; + return false; } /* static */ @@ -3639,10 +2130,10 @@ wxDateTimeHolidayAuthority::GetHolidaysInRange(const wxDateTime& dtStart, { wxDateTimeArray hol; - holidays.Empty(); + holidays.Clear(); - size_t count = ms_authorities.GetCount(); - 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); @@ -3651,7 +2142,7 @@ wxDateTimeHolidayAuthority::GetHolidaysInRange(const wxDateTime& dtStart, holidays.Sort(wxDateTimeCompareFunc); - return holidays.GetCount(); + return holidays.size(); } /* static */ @@ -3663,7 +2154,12 @@ void wxDateTimeHolidayAuthority::ClearAllAuthorities() /* static */ void wxDateTimeHolidayAuthority::AddAuthority(wxDateTimeHolidayAuthority *auth) { - ms_authorities.Add(auth); + ms_authorities.push_back(auth); +} + +wxDateTimeHolidayAuthority::~wxDateTimeHolidayAuthority() +{ + // required here for Darwin } // ---------------------------------------------------------------------------- @@ -3683,7 +2179,7 @@ size_t wxDateTimeWorkDays::DoGetHolidaysInRange(const wxDateTime& dtStart, { if ( dtStart > dtEnd ) { - wxFAIL_MSG( _T("invalid date range in GetHolidaysInRange") ); + wxFAIL_MSG( wxT("invalid date range in GetHolidaysInRange") ); return 0u; } @@ -3711,4 +2207,96 @@ 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, wxT("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, wxT("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, wxT("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, wxT("invalid week day") ); + + wd = wd == wxDateTime::Sun ? wxDateTime::Inv_WeekDay + : (wxDateTime::WeekDay)(wd - 1); +} + +#ifdef __WINDOWS__ + +wxDateTime& wxDateTime::SetFromMSWSysTime(const SYSTEMTIME& st) +{ + return Set(st.wDay, + static_cast(wxDateTime::Jan + st.wMonth - 1), + st.wYear, + st.wHour, st.wMinute, st.wSecond, st.wMilliseconds); +} + +wxDateTime& wxDateTime::SetFromMSWSysDate(const SYSTEMTIME& st) +{ + return Set(st.wDay, + static_cast(wxDateTime::Jan + st.wMonth - 1), + st.wYear, + 0, 0, 0, 0); +} + +void wxDateTime::GetAsMSWSysTime(SYSTEMTIME* st) const +{ + const wxDateTime::Tm tm(GetTm()); + + st->wYear = (WXWORD)tm.year; + st->wMonth = (WXWORD)(tm.mon - wxDateTime::Jan + 1); + st->wDay = tm.mday; + + st->wDayOfWeek = 0; + st->wHour = tm.hour; + st->wMinute = tm.min; + st->wSecond = tm.sec; + st->wMilliseconds = tm.msec; +} + +void wxDateTime::GetAsMSWSysDate(SYSTEMTIME* st) const +{ + const wxDateTime::Tm tm(GetTm()); + + st->wYear = (WXWORD)tm.year; + st->wMonth = (WXWORD)(tm.mon - wxDateTime::Jan + 1); + st->wDay = tm.mday; + + st->wDayOfWeek = + st->wHour = + st->wMinute = + st->wSecond = + st->wMilliseconds = 0; +} + +#endif // __WINDOWS__ +#endif // wxUSE_DATETIME