X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/98919134f0cb50ca160ec60452ed2ac27b1a0617..5e1d513ea393c769cc83e4bc69cec34c3d0a9507:/src/common/datetime.cpp?ds=sidebyside diff --git a/src/common/datetime.cpp b/src/common/datetime.cpp index 5781bebe92..90ac0aedf1 100644 --- a/src/common/datetime.cpp +++ b/src/common/datetime.cpp @@ -88,7 +88,9 @@ #include "wx/datetime.h" -const long wxDateTime::TIME_T_FACTOR = 1000l; +// ---------------------------------------------------------------------------- +// wxXTI +// ---------------------------------------------------------------------------- #if wxUSE_EXTENDED_RTTI @@ -106,35 +108,11 @@ wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter , wxFromStringCon #endif // wxUSE_EXTENDED_RTTI -// + // ---------------------------------------------------------------------------- // conditional compilation // ---------------------------------------------------------------------------- -#if defined(HAVE_STRPTIME) && defined(__GLIBC__) && \ - ((__GLIBC__ == 2) && (__GLIBC_MINOR__ == 0)) - // 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() - -#if defined(HAVE_STRPTIME) && defined(__DARWIN__) && defined(_MSL_USING_MW_C_HEADERS) && _MSL_USING_MW_C_HEADERS - // configure detects strptime as linkable because it's in the OS X - // System library but MSL headers don't declare it. - -// char *strptime(const char *, const char *, struct tm *); - // However, we DON'T want to just provide it here because we would - // crash and/or overwrite data when strptime from OS X tries - // to fill in MW's struct tm which is two fields shorter (no TZ stuff) - // So for now let's just say we don't have strptime - #undef HAVE_STRPTIME -#endif - #if defined(__MWERKS__) && wxUSE_UNICODE #include #endif @@ -203,11 +181,6 @@ wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter , wxFromStringCon #endif #endif // !WX_TIMEZONE && !WX_GMTOFF_IN_TM -// everyone has strftime except Win CE unless VC8 is used -#if !defined(__WXWINCE__) || defined(__VISUALC8__) - #define HAVE_STRFTIME -#endif - // NB: VC8 safe time functions could/should be used for wxMSW as well probably #if defined(__WXWINCE__) && defined(__VISUALC8__) @@ -335,14 +308,15 @@ 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__ +// 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__ +#endif // wxDEBUG_LEVEL // the constants used for JDN calculations static const long JDN_OFFSET = 32046l; @@ -358,6 +332,8 @@ 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 // ---------------------------------------------------------------------------- @@ -375,8 +351,8 @@ wxDateTime::Country wxDateTime::ms_country = wxDateTime::Country_Unknown; // private functions // ---------------------------------------------------------------------------- -// debugger helper: shows what the date really is -#ifdef __WXDEBUG__ +// 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 char buf[128]; @@ -388,7 +364,6 @@ extern const char *wxDumpDate(const wxDateTime* dt) return buf; } -#endif // Debug // get the number of days in the given month of the given year static inline @@ -407,7 +382,8 @@ wxDateTime::wxDateTime_t GetNumOfDaysInMonth(int year, wxDateTime::Month month) // returns the time zone in the C sense, i.e. the difference UTC - local // (in seconds) -static int GetTimeZone() +// NOTE: not static because used by datetimefmt.cpp +int GetTimeZone() { // set to true when the timezone is set static bool s_timezoneSet = false; @@ -480,7 +456,8 @@ 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 wxString& format, const tm* tm) +// 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 @@ -501,41 +478,6 @@ static wxString CallStrftime(const wxString& format, const tm* tm) #endif // HAVE_STRFTIME -#ifdef HAVE_STRPTIME - -#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 - -// Unicode-friendly strptime() wrapper -static const wxStringCharType * -CallStrptime(const wxStringCharType *input, const char *fmt, tm *tm) -{ - // the problem here is that strptime() returns pointer into the string we - // passed to it while we're really interested in the pointer into the - // original, Unicode, string so we try to transform the pointer back -#if wxUSE_UNICODE_WCHAR - wxCharBuffer inputMB(wxConvertWX2MB(input)); -#else // ASCII - const char * const inputMB = input; -#endif // Unicode/Ascii - - const char *result = strptime(inputMB, fmt, tm); - if ( !result ) - return NULL; - -#if wxUSE_UNICODE_WCHAR - // FIXME: this is wrong in presence of surrogates &c - return input + (result - inputMB.data()); -#else // ASCII - return result; -#endif // Unicode/Ascii -} - -#endif // HAVE_STRPTIME - // if year and/or month have invalid values, replace them with the current ones static void ReplaceDefaultYearMonthWithCurrent(int *year, wxDateTime::Month *month) @@ -559,8 +501,9 @@ static void ReplaceDefaultYearMonthWithCurrent(int *year, } } -// 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 @@ -571,106 +514,6 @@ 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; -} - -/* 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 wxStringCharType*& p, - unsigned long *number) -{ - size_t n = 1; - wxString s; - while ( wxIsdigit(*p) ) - { - s += *p++; - - if ( len && ++n > len ) - break; - } - - return !s.empty() && s.ToULong(number); -} - -// scans all alphabetic characters and returns the resulting string -static wxString GetAlphaToken(const wxStringCharType*& p) -{ - wxString s; - while ( wxIsalpha(*p) ) - { - s += *p++; - } - - return s; -} - // ============================================================================ // implementation of wxDateTime // ============================================================================ @@ -825,6 +668,13 @@ 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) { @@ -953,12 +803,61 @@ wxDateTime::wxDateTime_t wxDateTime::GetNumberOfDays(wxDateTime::Month month, } } +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 *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, wxEmptyString, _T("invalid month") ); #ifdef HAVE_STRFTIME + wxCHECK_MSG( month != Inv_Month, wxEmptyString, _T("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) tm tm; @@ -967,56 +866,36 @@ wxString wxDateTime::GetMonthName(wxDateTime::Month month, return CallStrftime(flags == Name_Abbr ? _T("%b") : _T("%B"), &tm); #else // !HAVE_STRFTIME - wxString ret; - switch(month) - { - case Jan: - ret = (flags == Name_Abbr ? wxT("Jan"): wxT("January")); - break; - case Feb: - ret = (flags == Name_Abbr ? wxT("Feb"): wxT("Febuary")); - break; - case Mar: - ret = (flags == Name_Abbr ? wxT("Mar"): wxT("March")); - break; - case Apr: - ret = (flags == Name_Abbr ? wxT("Apr"): wxT("April")); - break; - case May: - ret = (flags == Name_Abbr ? wxT("May"): wxT("May")); - break; - case Jun: - ret = (flags == Name_Abbr ? wxT("Jun"): wxT("June")); - break; - case Jul: - ret = (flags == Name_Abbr ? wxT("Jul"): wxT("July")); - break; - case Aug: - ret = (flags == Name_Abbr ? wxT("Aug"): wxT("August")); - break; - case Sep: - ret = (flags == Name_Abbr ? wxT("Sep"): wxT("September")); - break; - case Oct: - ret = (flags == Name_Abbr ? wxT("Oct"): wxT("October")); - break; - case Nov: - ret = (flags == Name_Abbr ? wxT("Nov"): wxT("November")); - break; - case Dec: - ret = (flags == Name_Abbr ? wxT("Dec"): wxT("December")); - break; - } - return ret; + return GetEnglishMonthName(month, flags); #endif // HAVE_STRFTIME/!HAVE_STRFTIME } +/* static */ +wxString wxDateTime::GetEnglishWeekDayName(WeekDay wday, NameFlags flags) +{ + wxCHECK_MSG( wday != Inv_WeekDay, wxEmptyString, _T("invalid weekday") ); + + static const char *weekdayNames[2][DAYS_PER_400_YEARS] = + { + { "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, wxEmptyString, _T("invalid weekday") ); #ifdef HAVE_STRFTIME + wxCHECK_MSG( wday != Inv_WeekDay, wxEmptyString, _T("invalid weekday") ); + // 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!) @@ -1035,32 +914,7 @@ wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday, // ... and call strftime() return CallStrftime(flags == Name_Abbr ? _T("%a") : _T("%A"), &tm); #else // !HAVE_STRFTIME - wxString ret; - switch(wday) - { - case Sun: - ret = (flags == Name_Abbr ? wxT("Sun") : wxT("Sunday")); - break; - case Mon: - ret = (flags == Name_Abbr ? wxT("Mon") : wxT("Monday")); - break; - case Tue: - ret = (flags == Name_Abbr ? wxT("Tue") : wxT("Tuesday")); - break; - case Wed: - ret = (flags == Name_Abbr ? wxT("Wed") : wxT("Wednesday")); - break; - case Thu: - ret = (flags == Name_Abbr ? wxT("Thu") : wxT("Thursday")); - break; - case Fri: - ret = (flags == Name_Abbr ? wxT("Fri") : wxT("Friday")); - break; - case Sat: - ret = (flags == Name_Abbr ? wxT("Sat") : wxT("Saturday")); - break; - } - return ret; + return GetEnglishWeekDayName(wday, flags); #endif // HAVE_STRFTIME/!HAVE_STRFTIME } @@ -1095,6 +949,7 @@ void wxDateTime::GetAmPmStrings(wxString *am, wxString *pm) } } + // ---------------------------------------------------------------------------- // Country stuff: date calculations depend on the country (DST, work days, // ...), so we need to know which rules to follow.