X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/be4e7abf54b8e75c2f7d740e87ed5f9db0a848b1..98cb8dcb0cf3b0e660f1f67e1c02451ab10257de:/src/common/datetime.cpp?ds=sidebyside diff --git a/src/common/datetime.cpp b/src/common/datetime.cpp index d0e828f406..009149c105 100644 --- a/src/common/datetime.cpp +++ b/src/common/datetime.cpp @@ -1,5 +1,5 @@ /////////////////////////////////////////////////////////////////////////////// -// Name: wx/datetime.h +// Name: src/common/datetime.cpp // Purpose: implementation of time/date related classes // Author: Vadim Zeitlin // Modified by: @@ -56,10 +56,6 @@ // headers // ---------------------------------------------------------------------------- -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) - #pragma implementation "datetime.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -173,6 +169,36 @@ wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter , wxFromStringCon #endif #endif // !WX_TIMEZONE && !WX_GMTOFF_IN_TM +#if wxUSE_THREADS +static wxMutex timeLock; +#endif + +#ifndef HAVE_LOCALTIME_R +struct tm *wxLocaltime_r(const time_t* ticks, struct tm* temp) +{ +#if wxUSE_THREADS && !defined(__WINDOWS__) + // No need to waste time with a mutex on windows since it's using + // thread local storage for localtime anyway. + wxMutexLocker locker(timeLock); +#endif + memcpy(temp, localtime(ticks), sizeof(struct tm)); + return temp; +} +#endif + +#ifndef HAVE_GMTIME_R +struct tm *wxGmtime_r(const time_t* ticks, struct tm* temp) +{ +#if wxUSE_THREADS && !defined(__WINDOWS__) + // No need to waste time with a mutex on windows since it's + // using thread local storage for gmtime anyway. + wxMutexLocker locker(timeLock); +#endif + memcpy(temp, gmtime(ticks), sizeof(struct tm)); + return temp; +} +#endif + // ---------------------------------------------------------------------------- // macros // ---------------------------------------------------------------------------- @@ -235,11 +261,14 @@ static const long MILLISECONDS_PER_DAY = 86400000l; // (i.e. JDN(Jan 1, 1970) = 2440587.5) static const long EPOCH_JDN = 2440587l; +// used only in asserts +#ifdef __WXDEBUG__ // the date of JDN -0.5 (as we don't work with fractional parts, this is the // reference date for us) is Nov 24, 4714BC static const int JDN_0_YEAR = -4713; static const int JDN_0_MONTH = wxDateTime::Nov; static const int JDN_0_DAY = 24; +#endif // __WXDEBUG__ // the constants used for JDN calculations static const long JDN_OFFSET = 32046l; @@ -308,15 +337,16 @@ static int GetTimeZone() static bool s_timezoneSet = false; static long gmtoffset = LONG_MAX; // invalid timezone - // ensure that the timezone variable is set by calling localtime + // ensure that the timezone variable is set by calling wxLocaltime_r if ( !s_timezoneSet ) { - // just call localtime() instead of figuring out whether this system - // supports tzset(), _tzset() or something else + // just call wxLocaltime_r() instead of figuring out whether this + // system supports tzset(), _tzset() or something else time_t t = 0; struct tm *tm; + struct tm tmstruct; - tm = localtime(&t); + tm = wxLocaltime_r(&t, &tmstruct); s_timezoneSet = true; // note that GMT offset is the opposite of time zone and so to return @@ -376,21 +406,26 @@ static long GetTruncatedJDN(wxDateTime::wxDateTime_t day, static wxString CallStrftime(const wxChar *format, const tm* tm) { wxChar buf[4096]; + // Create temp wxString here to work around mingw/cygwin bug 1046059 + // http://sourceforge.net/tracker/?func=detail&atid=102435&aid=1046059&group_id=2435 + wxString s; + if ( !wxStrftime(buf, WXSIZEOF(buf), format, tm) ) { // buffer is too small? wxFAIL_MSG(_T("strftime() failed")); } - return wxString(buf); + s = buf; + return s; } #endif #ifdef HAVE_STRPTIME -// glibc2 doesn't define this in the headers unless _XOPEN_SOURCE is defined -// which, unfortunately, wreaks havoc elsewhere -#if defined(__GLIBC__) && (__GLIBC__ == 2) +#if wxUSE_UNIX && !defined(HAVE_STRPTIME_DECL) + // configure detected that we had strptime() but not its declaration, + // provide it ourselves extern "C" char *strptime(const char *, const char *, struct tm *); #endif @@ -426,10 +461,11 @@ static void ReplaceDefaultYearMonthWithCurrent(int *year, wxDateTime::Month *month) { struct tm *tmNow = NULL; + struct tm tmstruct; if ( *year == wxDateTime::Inv_Year ) { - tmNow = wxDateTime::GetTmNow(); + tmNow = wxDateTime::GetTmNow(&tmstruct); *year = 1900 + tmNow->tm_year; } @@ -437,7 +473,7 @@ static void ReplaceDefaultYearMonthWithCurrent(int *year, if ( *month == wxDateTime::Inv_Month ) { if ( !tmNow ) - tmNow = wxDateTime::GetTmNow(); + tmNow = wxDateTime::GetTmNow(&tmstruct); *month = (wxDateTime::Month)tmNow->tm_mon; } @@ -518,6 +554,13 @@ static wxDateTime::WeekDay GetWeekDayFromName(const wxString& name, int flags) return wd; } +/* static */ +struct tm *wxDateTime::GetTmNow(struct tm *tmstruct) +{ + time_t t = GetTimeNow(); + return wxLocaltime_r(&t, tmstruct); +} + // scans all digits (but no more than len) and returns the resulting number static bool GetNumericToken(size_t len, const wxChar*& p, unsigned long *number) { @@ -687,7 +730,7 @@ wxDateTime::TimeZone::TimeZone(wxDateTime::TZ tz) case wxDateTime::A_CST: // Central Standard Time in use in Australia = UTC + 9.5 - m_offset = 60l*(9*60 + 30); + m_offset = 60l*(9*MIN_PER_HOUR + MIN_PER_HOUR/2); break; default: @@ -984,7 +1027,8 @@ wxDateTime::Country wxDateTime::GetCountry() { // 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") ) @@ -1307,9 +1351,10 @@ wxDateTime& wxDateTime::Set(wxDateTime_t hour, _T("Invalid time in wxDateTime::Set()") ); // get the current date from system - struct tm *tm = GetTmNow(); + struct tm tmstruct; + struct tm *tm = GetTmNow(&tmstruct); - wxDATETIME_CHECK( tm, _T("localtime() failed") ); + wxDATETIME_CHECK( tm, _T("wxLocaltime_r() failed") ); // make a copy so it isn't clobbered by the call to mktime() below struct tm tm1(*tm); @@ -1400,20 +1445,9 @@ 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 suppose an UTC date, so bring it back to local time zone - // (also see GetJulianDayNumber() implementation) - long tzDiff = GetTimeZone(); - if ( IsDST() == 1 ) - { - // FIXME: again, we suppose that DST is always one hour - tzDiff -= 3600; - } - - m_time += tzDiff*1000; // tzDiff is in seconds + // JDNs always are in UTC, so we don't need any adjustments for time zone return *this; } @@ -1486,7 +1520,8 @@ unsigned long wxDateTime::GetAsDOS() const { unsigned long ddt; time_t ticks = GetTicks(); - struct tm *tm = localtime(&ticks); + struct tm tmstruct; + struct tm *tm = wxLocaltime_r(&ticks, &tmstruct); long year = tm->tm_year; year -= 80; @@ -1524,14 +1559,15 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const if ( time != (time_t)-1 ) { // use C RTL functions + struct tm tmstruct; tm *tm; if ( tz.GetOffset() == -GetTimeZone() ) { // we are working with local time - tm = localtime(&time); + tm = wxLocaltime_r(&time, &tmstruct); // should never happen - wxCHECK_MSG( tm, Tm(), _T("localtime() failed") ); + wxCHECK_MSG( tm, Tm(), _T("wxLocaltime_r() failed") ); } else { @@ -1543,10 +1579,10 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const if ( time >= 0 ) #endif { - tm = gmtime(&time); + tm = wxGmtime_r(&time, &tmstruct); // should never happen - wxCHECK_MSG( tm, Tm(), _T("gmtime() failed") ); + wxCHECK_MSG( tm, Tm(), _T("wxGmtime_r() failed") ); } else { @@ -1632,14 +1668,14 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const timeOnly -= tm.msec; timeOnly /= 1000; // now we have time in seconds - tm.sec = (wxDateTime_t)(timeOnly % 60); + tm.sec = (wxDateTime_t)(timeOnly % SEC_PER_MIN); timeOnly -= tm.sec; - timeOnly /= 60; // now we have time in minutes + timeOnly /= SEC_PER_MIN; // now we have time in minutes - tm.min = (wxDateTime_t)(timeOnly % 60); + tm.min = (wxDateTime_t)(timeOnly % MIN_PER_HOUR); timeOnly -= tm.min; - tm.hour = (wxDateTime_t)(timeOnly / 60); + tm.hour = (wxDateTime_t)(timeOnly / MIN_PER_HOUR); return tm; } @@ -2105,16 +2141,7 @@ wxDateTime& wxDateTime::SetToYearDay(wxDateTime::wxDateTime_t yday) double wxDateTime::GetJulianDayNumber() const { - // JDN are always expressed for the UTC dates - Tm tm(ToTimezone(UTC).GetTm(UTC)); - - double result = GetTruncatedJDN(tm.mday, tm.mon, tm.year); - - // add the part GetTruncatedJDN() neglected - result += 0.5; - - // and now add the time: 86400 sec = 1 JDN - return result + ((double)(60*(60*tm.hour + tm.min) + tm.sec)) / 86400; + return m_time.ToDouble() / MILLISECONDS_PER_DAY + EPOCH_JDN + 0.5; } double wxDateTime::GetRataDie() const @@ -2136,9 +2163,10 @@ int wxDateTime::IsDST(wxDateTime::Country country) const time_t timet = GetTicks(); if ( timet != (time_t)-1 ) { - tm *tm = localtime(&timet); + struct tm tmstruct; + tm *tm = wxLocaltime_r(&timet, &tmstruct); - wxCHECK_MSG( tm, -1, _T("localtime() failed") ); + wxCHECK_MSG( tm, -1, _T("wxLocaltime_r() failed") ); return tm->tm_isdst; } @@ -2168,6 +2196,21 @@ wxDateTime& wxDateTime::MakeTimezone(const TimeZone& tz, bool noDST) secDiff -= 3600; } + return Add(wxTimeSpan::Seconds(secDiff)); +} + +wxDateTime& wxDateTime::MakeFromTimezone(const TimeZone& tz, bool noDST) +{ + long secDiff = GetTimeZone() + tz.GetOffset(); + + // we need to know whether DST is or not in effect for this date unless + // the test disabled by the caller + if ( !noDST && (IsDST() == 1) ) + { + // FIXME we assume that the DST is always shifted by 1 hour + secDiff -= 3600; + } + return Subtract(wxTimeSpan::Seconds(secDiff)); } @@ -2185,14 +2228,15 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const if ( (time != (time_t)-1) && !wxStrstr(format, _T("%l")) ) { // use strftime() - tm *tm; + struct tm tmstruct; + struct tm *tm; if ( tz.GetOffset() == -GetTimeZone() ) { // we are working with local time - tm = localtime(&time); + tm = wxLocaltime_r(&time, &tmstruct); // should never happen - wxCHECK_MSG( tm, wxEmptyString, _T("localtime() failed") ); + wxCHECK_MSG( tm, wxEmptyString, _T("wxLocaltime_r() failed") ); } else { @@ -2205,10 +2249,10 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const if ( time >= 0 ) #endif { - tm = gmtime(&time); + tm = wxGmtime_r(&time, &tmstruct); // should never happen - wxCHECK_MSG( tm, wxEmptyString, _T("gmtime() failed") ); + wxCHECK_MSG( tm, wxEmptyString, _T("wxGmtime_r() failed") ); } else { @@ -2309,12 +2353,12 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const // find the YEAR which is a year in the strftime() range (1970 // - 2038) whose Jan 1 falls on the same week day as the Jan 1 // of the real year. Then make a copy of the format and - // replace all occurences of YEAR in it with some unique + // replace all occurrences of YEAR in it with some unique // string not appearing anywhere else in it, then use // strftime() to format the date in year YEAR and then replace // YEAR back by the real year and the unique replacement - // string back with YEAR. Notice that "all occurences of YEAR" - // means all occurences of 4 digit as well as 2 digit form! + // string back with YEAR. Notice that "all occurrences of YEAR" + // means all occurrences of 4 digit as well as 2 digit form! // // the bugs: we assume that neither of %c nor %x contains any // fields which may change between the YEAR and real year. For @@ -2372,25 +2416,25 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const strYear.Printf(_T("%d"), year); strYear2.Printf(_T("%d"), year % 100); - // find two strings not occuring in format (this is surely - // not optimal way of doing it... improvements welcome!) - wxString fmt = format; + // find two strings not occurring in format (this is surely + // not the optimal way of doing it... improvements welcome!) + wxString fmt2 = format; wxString replacement = (wxChar)-1; - while ( fmt.Find(replacement) != wxNOT_FOUND ) + while ( fmt2.Find(replacement) != wxNOT_FOUND ) { replacement << (wxChar)-1; } wxString replacement2 = (wxChar)-2; - while ( fmt.Find(replacement) != wxNOT_FOUND ) + while ( fmt2.Find(replacement) != wxNOT_FOUND ) { replacement << (wxChar)-2; } - // replace all occurences of year with it - bool wasReplaced = fmt.Replace(strYear, replacement) > 0; + // replace all occurrences of year with it + bool wasReplaced = fmt2.Replace(strYear, replacement) > 0; if ( !wasReplaced ) - wasReplaced = fmt.Replace(strYear2, replacement2) > 0; + wasReplaced = fmt2.Replace(strYear2, replacement2) > 0; // use strftime() to format the same date but in supported // year @@ -2414,14 +2458,14 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const : _T("%x"), &tmAdjusted); - // now replace the occurence of 1999 with the real year + // now replace the occurrence of 1999 with the real year 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 + // and replace back all occurrences of replacement string if ( wasReplaced ) { str.Replace(replacement2, strYear2); @@ -2766,7 +2810,7 @@ const wxChar *wxDateTime::ParseRfc822Date(const wxChar* date) } // hours - offset = 60*(10*(*p - _T('0')) + (*(p + 1) - _T('0'))); + offset = MIN_PER_HOUR*(10*(*p - _T('0')) + (*(p + 1) - _T('0'))); p += 2; @@ -2846,12 +2890,12 @@ const wxChar *wxDateTime::ParseRfc822Date(const wxChar* date) } // make it minutes - offset *= 60; + offset *= MIN_PER_HOUR; } - // the spec was correct + // the spec was correct, construct the date from the values we found Set(day, mon, year, hour, min, sec); - MakeTimezone((wxDateTime_t)(60*offset)); + MakeFromTimezone(TimeZone((wxDateTime_t)(offset*SEC_PER_MIN))); return p; } @@ -3693,12 +3737,12 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date) for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ ) { - wxString date = wxGetTranslation(literalDates[n].str); - size_t len = date.length(); + const wxString dateStr = wxGetTranslation(literalDates[n].str); + size_t len = dateStr.length(); if ( wxStrlen(p) >= len ) { wxString str(p, len); - if ( str.CmpNoCase(date) == 0 ) + if ( str.CmpNoCase(dateStr) == 0 ) { // nothing can follow this, so stop here p += len; @@ -4281,7 +4325,7 @@ 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) @@ -4323,8 +4367,8 @@ wxDateTimeHolidayAuthority::GetHolidaysInRange(const wxDateTime& dtStart, holidays.Clear(); - size_t count = ms_authorities.size(); - for ( size_t nAuth = 0; nAuth < count; nAuth++ ) + const size_t countAuth = ms_authorities.size(); + for ( size_t nAuth = 0; nAuth < countAuth; nAuth++ ) { ms_authorities[nAuth]->DoGetHolidaysInRange(dtStart, dtEnd, hol);