X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/bb7afa499a53b8df92f1083b48702810669b61ea..82c126e50158efee5a1f46e1200be380c5199f8d:/src/common/datetime.cpp diff --git a/src/common/datetime.cpp b/src/common/datetime.cpp index 43b767754e..d1ce06ab39 100644 --- a/src/common/datetime.cpp +++ b/src/common/datetime.cpp @@ -70,6 +70,7 @@ #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" @@ -170,7 +171,39 @@ wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter , wxFromStringCon #elif defined(__DARWIN__) #define WX_GMTOFF_IN_TM #elif defined(__WXWINCE__) && defined(__VISUALC8__) + // _timezone is not present in dynamic run-time library + #if 0 + // Solution (1): use the function equivalent of _timezone + static long wxGetTimeZone() + { + static long s_Timezone = MAXLONG; // invalid timezone + if (s_Timezone == MAXLONG) + { + int t; + _get_timezone(& t); + s_Timezone = (long) t; + } + return s_Timezone; + } + #define WX_TIMEZONE wxGetTimeZone() + #elif 1 + // Solution (2): using GetTimeZoneInformation + static long wxGetTimeZone() + { + static long timezone = MAXLONG; // invalid timezone + if (timezone == MAXLONG) + { + TIME_ZONE_INFORMATION tzi; + ::GetTimeZoneInformation(&tzi); + timezone = tzi.Bias; + } + return timezone; + } + #define WX_TIMEZONE wxGetTimeZone() + #else + // Old method using _timezone: this symbol doesn't exist in the dynamic run-time library (i.e. using /MD) #define WX_TIMEZONE _timezone + #endif #else // unknown platform - try timezone #define WX_TIMEZONE timezone #endif @@ -210,7 +243,18 @@ struct tm *wxLocaltime_r(const time_t* ticks, struct tm* temp) // thread local storage for localtime anyway. wxMutexLocker locker(timeLock); #endif - memcpy(temp, localtime(ticks), sizeof(struct tm)); + + // Borland CRT crashes when passed 0 ticks for some reason, see SF bug 1704438 +#ifdef __BORLANDC__ + if ( !*ticks ) + return NULL; +#endif + + const tm * const t = localtime(ticks); + if ( !t ) + return NULL; + + memcpy(temp, t, sizeof(struct tm)); return temp; } #endif // !HAVE_LOCALTIME_R @@ -223,6 +267,16 @@ struct tm *wxGmtime_r(const time_t* ticks, struct tm* temp) // using thread local storage for gmtime anyway. wxMutexLocker locker(timeLock); #endif + +#ifdef __BORLANDC__ + if ( !*ticks ) + return NULL; +#endif + + const tm * const t = gmtime(ticks); + if ( !t ) + return NULL; + memcpy(temp, gmtime(ticks), sizeof(struct tm)); return temp; } @@ -429,7 +483,7 @@ static long GetTruncatedJDN(wxDateTime::wxDateTime_t day, #ifdef HAVE_STRFTIME // this function is a wrapper around strftime(3) adding error checking -static wxString CallStrftime(const wxChar *format, const tm* tm) +static wxString CallStrftime(const wxString& format, const tm* tm) { wxChar buf[4096]; // Create temp wxString here to work around mingw/cygwin bug 1046059 @@ -660,7 +714,7 @@ 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::wxDateTime_t)((wxDateTime::WeekDay)(GetTruncatedJDN(mday, mon, year) + 2) % 7); + wday = (wxDateTime::wxDateTime_t)((GetTruncatedJDN(mday, mon, year) + 2) % 7); } void wxDateTime::Tm::AddMonths(int monDiff) @@ -1177,9 +1231,6 @@ wxDateTime wxDateTime::GetBeginDST(int year, Country country) } dt += wxTimeSpan::Hours(1); - - // disable DST tests because it could result in an infinite recursion! - dt.MakeGMT(true); } else switch ( country ) { @@ -1278,9 +1329,6 @@ wxDateTime wxDateTime::GetEndDST(int year, Country country) } dt += wxTimeSpan::Hours(1); - - // disable DST tests because it could result in an infinite recursion! - dt.MakeGMT(true); } else switch ( country ) { @@ -1496,6 +1544,16 @@ 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 // ---------------------------------------------------------------------------- @@ -1549,6 +1607,7 @@ unsigned long wxDateTime::GetAsDOS() const time_t ticks = GetTicks(); struct tm tmstruct; struct tm *tm = wxLocaltime_r(&ticks, &tmstruct); + wxCHECK_MSG( tm, ULONG_MAX, _T("time can't be represented in DOS format") ); long year = tm->tm_year; year -= 80; @@ -2247,15 +2306,16 @@ wxDateTime& wxDateTime::MakeFromTimezone(const TimeZone& tz, bool noDST) // wxDateTime to/from text representations // ---------------------------------------------------------------------------- -wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const +wxString wxDateTime::Format(const wxString& format, const TimeZone& tz) const { - wxCHECK_MSG( format, wxEmptyString, _T("NULL format in wxDateTime::Format") ); - - time_t time = GetTicks(); + wxCHECK_MSG( !format.empty(), wxEmptyString, + _T("NULL format in wxDateTime::Format") ); // we have to use our own implementation if the date is out of range of // strftime() or if we use non standard specificators #ifdef HAVE_STRFTIME + time_t time = GetTicks(); + if ( (time != (time_t)-1) && !wxStrstr(format, _T("%l")) ) { // use strftime() @@ -2317,7 +2377,7 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const tmTimeOnly.tm_isdst = 0; // no DST, we adjust for tz ourselves wxString tmp, res, fmt; - for ( const wxChar *p = format; *p; p++ ) + for ( wxString::const_iterator p = format.begin(); p != format.end(); ++p ) { if ( *p != _T('%') ) { @@ -2328,7 +2388,7 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const } // set the default format - switch ( *++p ) + switch ( (*++p).GetValue() ) { case _T('Y'): // year has 4 digits fmt = _T("%04d"); @@ -2357,7 +2417,7 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const restart = false; // start of the format specification - switch ( *p ) + switch ( (*p).GetValue() ) { case _T('a'): // a weekday name case _T('A'): @@ -2396,7 +2456,7 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const // 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 + // find the YEAR: normally, for any year X, Jan 1 of 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 @@ -2438,41 +2498,15 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const nLostWeekDays += year++ % 4 ? 1 : 2; } - // Keep year below 2000 so the 2digit year number - // can never match the month or day of the month - if (year>=2000) year-=28; - // at any rate, we couldn't go further than 1988 + 9 + 28! - wxASSERT_MSG( year < 2030, - _T("logic error in wxDateTime::Format") ); + // finally move the year below 2000 so that the 2-digit + // year number can never match the month or day of the + // month when we do the replacements below + if ( year >= 2000 ) + year -= 28; - wxString strYear, strYear2; - strYear.Printf(_T("%d"), year); - strYear2.Printf(_T("%d"), year % 100); + wxASSERT_MSG( year >= 1970 && year < 2000, + _T("logic error in wxDateTime::Format") ); - // find four strings not occurring in format (this is surely - // not the optimal way of doing it... improvements welcome!) - wxString fmt2 = format; - wxString replacement,replacement2,replacement3,replacement4; - for (int rnr=1; rnr<5 ; rnr++) - { - wxString r = (wxChar)-rnr; - while ( fmt2.Find(r) != wxNOT_FOUND ) - { - r << (wxChar)-rnr; - } - - switch (rnr) - { - case 1: replacement=r; break; - case 2: replacement2=r; break; - case 3: replacement3=r; break; - case 4: replacement4=r; break; - } - } - // replace all occurrences of year with it - bool wasReplaced = fmt2.Replace(strYear, replacement) > 0; - // evaluation order ensures we always attempt the replacement. - wasReplaced = (fmt2.Replace(strYear2, replacement2) > 0) | wasReplaced ; // use strftime() to format the same date but in supported // year @@ -2496,25 +2530,23 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const : _T("%x"), &tmAdjusted); - // now replace the occurrence of 1999 with the real year - // we do this in two stages to stop the 2 digit year - // matching any substring of the 4 digit year. - // Any day,month hours and minutes components should be safe due - // to ensuring the range of the years. - wxString strYearReal, strYearReal2; - strYearReal.Printf(_T("%04d"), yearReal); - strYearReal2.Printf(_T("%02d"), yearReal % 100); - str.Replace(strYear, replacement3); - str.Replace(strYear2,replacement4); - str.Replace(replacement3, strYearReal); - str.Replace(replacement4, strYearReal2); - - // and replace back all occurrences of replacement string - if ( wasReplaced ) - { - str.Replace(replacement2, strYear2); - str.Replace(replacement, strYear); - } + // now replace the replacement year with the real year: + // notice that we have to replace the 4 digit year with + // a unique string not appearing in strftime() output + // first to prevent the 2 digit year from matching any + // substring of the 4 digit year (but any day, month, + // hours or minutes components should be safe because + // they are never in 70-99 range) + wxString replacement("|"); + while ( str.find(replacement) != wxString::npos ) + replacement += '|'; + + str.Replace(wxString::Format("%d", year), + replacement); + str.Replace(wxString::Format("%d", year % 100), + wxString::Format("%d", yearReal % 100)); + str.Replace(replacement, + wxString::Format("%d", yearReal)); res += str; } @@ -3105,10 +3137,10 @@ static wxString GetLocaleDateFormat() #endif // __WINDOWS__ const wxChar *wxDateTime::ParseFormat(const wxChar *date, - const wxChar *format, + const wxString& format, const wxDateTime& dateDef) { - wxCHECK_MSG( date && format, (wxChar *)NULL, + wxCHECK_MSG( date && !format.empty(), (wxChar *)NULL, _T("NULL pointer in wxDateTime::ParseFormat()") ); wxString str; @@ -3138,7 +3170,7 @@ const wxChar *wxDateTime::ParseFormat(const wxChar *date, int year = 0; const wxChar *input = date; - for ( const wxChar *fmt = format; *fmt; fmt++ ) + for ( wxString::const_iterator fmt = format.begin(); fmt != format.end(); ++fmt ) { if ( *fmt != _T('%') ) { @@ -3179,7 +3211,7 @@ const wxChar *wxDateTime::ParseFormat(const wxChar *date, // the default widths for the various fields if ( !width ) { - switch ( *fmt ) + switch ( (*fmt).GetValue() ) { case _T('Y'): // year has 4 digits width = 4; @@ -3201,7 +3233,7 @@ const wxChar *wxDateTime::ParseFormat(const wxChar *date, } // then the format itself - switch ( *fmt ) + switch ( (*fmt).GetValue() ) { case _T('a'): // a weekday name case _T('A'): @@ -3770,7 +3802,7 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date) // some special cases static struct { - const wxChar *str; + const char *str; int dayDiffFromToday; } literalDates[] = { @@ -3945,7 +3977,7 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date) else // not a valid weekday name { // try the ordinals - static const wxChar *ordinals[] = + static const char *ordinals[] = { wxTRANSLATE("first"), wxTRANSLATE("second"), @@ -4111,7 +4143,7 @@ const wxChar *wxDateTime::ParseTime(const wxChar *time) // first try some extra things static const struct { - const wxChar *name; + const char *name; wxDateTime_t hour; } stdTimes[] = { @@ -4238,12 +4270,13 @@ enum TimeSpanPart // And, to be better than MFC :-), we also have // %E number of wEeks // %l milliseconds (000 - 999) -wxString wxTimeSpan::Format(const wxChar *format) const +wxString wxTimeSpan::Format(const wxString& format) const { - wxCHECK_MSG( format, wxEmptyString, _T("NULL format in wxTimeSpan::Format") ); + wxCHECK_MSG( !format.empty(), wxEmptyString, + _T("NULL format in wxTimeSpan::Format") ); wxString str; - str.Alloc(wxStrlen(format)); + str.Alloc(format.length()); // Suppose we have wxTimeSpan ts(1 /* hour */, 2 /* min */, 3 /* sec */) // @@ -4261,7 +4294,7 @@ wxString wxTimeSpan::Format(const wxChar *format) const // we remember the most important unit found so far TimeSpanPart partBiggest = Part_MSec; - for ( const wxChar *pch = format; *pch; pch++ ) + for ( wxString::const_iterator pch = format.begin(); pch != format.end(); ++pch ) { wxChar ch = *pch;