#endif // WX_PRECOMP
#include "wx/thread.h"
+#include "wx/tokenzr.h"
-#define wxDEFINE_TIME_CONSTANTS
+#define wxDEFINE_TIME_CONSTANTS // before including datetime.h
#include "wx/datetime.h"
+// ----------------------------------------------------------------------------
+// conditional compilation
+// ----------------------------------------------------------------------------
+
+#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
- #define WX_TIMEZONE timezone
-#endif
+ #if defined(__BORLANDC__) || defined(__MINGW32__) || defined(__VISAGECPP__)
+ #define WX_TIMEZONE _timezone
+ #else // unknown platform - try timezone
+ #define WX_TIMEZONE timezone
+ #endif
+#endif // !WX_TIMEZONE
// ----------------------------------------------------------------------------
// constants
// this is the integral part of JDN of the midnight of Jan 1, 1970
// (i.e. JDN(Jan 1, 1970) = 2440587.5)
-static const int EPOCH_JDN = 2440587;
+static const long EPOCH_JDN = 2440587l;
// 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_DAY = 24;
// the constants used for JDN calculations
-static const int JDN_OFFSET = 32046;
-static const int DAYS_PER_5_MONTHS = 153;
-static const int DAYS_PER_4_YEARS = 1461;
-static const int DAYS_PER_400_YEARS = 146097;
+static const long JDN_OFFSET = 32046l;
+static const long DAYS_PER_5_MONTHS = 153l;
+static const long DAYS_PER_4_YEARS = 1461l;
+static const long DAYS_PER_400_YEARS = 146097l;
+
+// this array contains the cumulated number of days in all previous months for
+// normal and leap years
+static const wxDateTime::wxDateTime_t gs_cumulatedDays[2][MONTHS_IN_YEAR] =
+{
+ { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 },
+ { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 }
+};
+
+// ----------------------------------------------------------------------------
+// global data
+// ----------------------------------------------------------------------------
+
+static wxDateTime gs_dtDefault;
+
+wxDateTime& wxDefaultDateTime = gs_dtDefault;
+
+wxDateTime::Country wxDateTime::ms_country = wxDateTime::Country_Unknown;
// ----------------------------------------------------------------------------
-// globals
+// private globals
// ----------------------------------------------------------------------------
// a critical section is needed to protect GetTimeZone() static
// variable in MT case
-#ifdef wxUSE_THREADS
- wxCriticalSection gs_critsectTimezone;
+#if wxUSE_THREADS
+ static wxCriticalSection gs_critsectTimezone;
#endif // wxUSE_THREADS
// ----------------------------------------------------------------------------
// this function is a wrapper around strftime(3)
static wxString CallStrftime(const wxChar *format, const tm* tm)
{
- wxChar buf[1024];
+ wxChar buf[4096];
if ( !wxStrftime(buf, WXSIZEOF(buf), format, tm) )
{
- // is ti really possible that 1024 is too short?
+ // buffer is too small?
wxFAIL_MSG(_T("strftime() failed"));
}
}
}
+// fll the struct tm with default values
+static void InitTm(struct tm& tm)
+{
+ // struct tm may have etxra fields (undocumented and with unportable
+ // names) which, nevertheless, must be set to 0
+ memset(&tm, 0, sizeof(struct tm));
+
+ tm.tm_mday = 1; // mday 0 is invalid
+ tm.tm_year = 76; // any valid year
+ 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 and returns the resulting number
+static bool GetNumericToken(const wxChar*& p, unsigned long *number)
+{
+ wxString s;
+ while ( wxIsdigit(*p) )
+ {
+ s += *p++;
+ }
+
+ 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
// ============================================================================
-// ----------------------------------------------------------------------------
-// static data
-// ----------------------------------------------------------------------------
-
-wxDateTime::Country wxDateTime::ms_country = wxDateTime::Country_Unknown;
-wxDateTime wxDateTime::ms_InvDateTime;
-
// ----------------------------------------------------------------------------
// struct Tm
// ----------------------------------------------------------------------------
monDiff += MONTHS_IN_YEAR;
}
- while ( monDiff + mon > MONTHS_IN_YEAR )
+ while ( monDiff + mon >= MONTHS_IN_YEAR )
{
year++;
void wxDateTime::Tm::AddDays(int dayDiff)
{
// normalize the days field
- mday += dayDiff;
- while ( mday < 1 )
+ while ( dayDiff + mday < 1 )
{
AddMonths(-1);
- mday += GetNumOfDaysInMonth(year, mon);
+ dayDiff += GetNumOfDaysInMonth(year, mon);
}
+ mday += dayDiff;
while ( mday > GetNumOfDaysInMonth(year, mon) )
{
mday -= GetNumOfDaysInMonth(year, mon);
case wxDateTime::A_CST:
// Central Standard Time in use in Australia = UTC + 9.5
- m_offset = 60*(9*60 + 30);
+ m_offset = 60l*(9*60 + 30);
break;
default:
{
case Gregorian:
return Now().GetMonth();
- break;
case Julian:
wxFAIL_MSG(_T("TODO"));
case Gregorian:
case Julian:
return IsLeapYear(year) ? 366 : 365;
- break;
default:
wxFAIL_MSG(_T("unsupported calendar"));
}
/* static */
-wxString wxDateTime::GetMonthName(wxDateTime::Month month, bool abbr)
+wxString wxDateTime::GetMonthName(wxDateTime::Month month,
+ wxDateTime::NameFlags flags)
{
wxCHECK_MSG( month != Inv_Month, _T(""), _T("invalid month") );
- tm tm = { 0, 0, 0, 1, month, 76 }; // any year will do
+ // 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;
+ InitTm(tm);
+ tm.tm_mon = month;
- return CallStrftime(abbr ? _T("%b") : _T("%B"), &tm);
+ return CallStrftime(flags == Name_Abbr ? _T("%b") : _T("%B"), &tm);
}
/* static */
-wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday, bool abbr)
+wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday,
+ wxDateTime::NameFlags flags)
{
wxCHECK_MSG( wday != Inv_WeekDay, _T(""), _T("invalid weekday") );
// take some arbitrary Sunday
- tm tm = { 0, 0, 0, 28, Nov, 99 };
+ tm tm;
+ InitTm(tm);
+ tm.tm_mday = 28;
+ tm.tm_mon = Nov;
+ tm.tm_year = 99;
// and offset it by the number of days needed to get the correct wday
tm.tm_mday += wday;
(void)mktime(&tm);
// ... and call strftime()
- return CallStrftime(abbr ? _T("%a") : _T("%A"), &tm);
+ return CallStrftime(flags == Name_Abbr ? _T("%a") : _T("%A"), &tm);
+}
+
+/* static */
+void wxDateTime::GetAmPmStrings(wxString *am, wxString *pm)
+{
+ tm tm;
+ InitTm(tm);
+ if ( am )
+ {
+ *am = CallStrftime(_T("%p"), &tm);
+ }
+ if ( pm )
+ {
+ tm.tm_hour = 13;
+ *pm = CallStrftime(_T("%p"), &tm);
+ }
}
// ----------------------------------------------------------------------------
/* static */
wxDateTime::Country wxDateTime::GetCountry()
{
+ // TODO use LOCALE_ICOUNTRY setting under Win32
+
if ( ms_country == Country_Unknown )
{
// try to guess from the time zone name
if ( !IsDSTApplicable(year, country) )
{
- return ms_InvDateTime;
+ return wxInvalidDateTime;
}
wxDateTime dt;
dt += wxTimeSpan::Hours(1);
- dt.MakeGMT();
+ // disable DST tests because it could result in an infinite recursion!
+ dt.MakeGMT(TRUE);
}
else switch ( country )
{
if ( !IsDSTApplicable(year, country) )
{
- return ms_InvDateTime;
+ return wxInvalidDateTime;
}
wxDateTime dt;
if ( IsWestEuropeanCountry(country) || (country == Russia) )
{
- // DST ends at 1 a.m. GMT on the last Sunday of October
+ // DST ends at 1 a.m. GMT on the last Sunday of October
if ( !dt.SetToLastWeekDay(Sun, Oct, year) )
{
// weirder and weirder...
dt += wxTimeSpan::Hours(1);
- dt.MakeGMT();
+ // disable DST tests because it could result in an infinite recursion!
+ dt.MakeGMT(TRUE);
}
else switch ( country )
{
break;
default:
- // DST ends at 2 a.m. on the last Sunday of October
+ // DST ends at 2 a.m. on the last Sunday of October
if ( !dt.SetToLastWeekDay(Sun, Oct, year) )
{
// weirder and weirder...
wxFAIL_MSG( _T("mktime() failed") );
- return ms_InvDateTime;
+ return wxInvalidDateTime;
}
else
{
// we allow seconds to be 61 to account for the leap seconds, even if we
// don't use them really
wxCHECK_MSG( hour < 24 && second < 62 && minute < 60 && millisec < 1000,
- ms_InvDateTime,
+ wxInvalidDateTime,
_T("Invalid time in wxDateTime::Set()") );
// get the current date from system
- time_t timet = GetTimeNow();
- struct tm *tm = localtime(&timet);
+ struct tm *tm = GetTmNow();
- wxCHECK_MSG( tm, ms_InvDateTime, _T("localtime() failed") );
+ wxCHECK_MSG( tm, wxInvalidDateTime, _T("localtime() failed") );
// adjust the time
tm->tm_hour = hour;
wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") );
wxCHECK_MSG( hour < 24 && second < 62 && minute < 60 && millisec < 1000,
- ms_InvDateTime,
+ wxInvalidDateTime,
_T("Invalid time in wxDateTime::Set()") );
ReplaceDefaultYearMonthWithCurrent(&year, &month);
wxCHECK_MSG( (0 < day) && (day <= GetNumberOfDays(month, year)),
- ms_InvDateTime,
+ wxInvalidDateTime,
_T("Invalid date in wxDateTime::Set()") );
// the range of time_t type (inclusive)
// EPOCH_JDN + 0.5
jdn -= EPOCH_JDN + 0.5;
- m_time = jdn;
- m_time *= MILLISECONDS_PER_DAY;
+ jdn *= MILLISECONDS_PER_DAY;
+
+ m_time.Assign(jdn);
+
+ return *this;
+}
+
+wxDateTime& wxDateTime::ResetTime()
+{
+ Tm tm = GetTm();
+
+ if ( tm.hour || tm.min || tm.sec || tm.msec )
+ {
+ tm.msec =
+ tm.sec =
+ tm.min =
+ tm.hour = 0;
+
+ Set(tm);
+ }
return *this;
}
}
else
{
- time += tz.GetOffset();
+ time += (time_t)tz.GetOffset();
+#ifdef __VMS__ // time is unsigned so avoid warning
+ int time2 = (int) time;
+ if ( time2 >= 0 )
+#else
if ( time >= 0 )
+#endif
{
tm = gmtime(&time);
Set(tm);
+ wxASSERT_MSG( IsSameTime(tm),
+ _T("Add(wxDateSpan) shouldn't modify time") );
+
return *this;
}
int year)
{
// take the current month/year if none specified
- ReplaceDefaultYearMonthWithCurrent(&year, &month);
+ if ( year == Inv_Year )
+ year = GetYear();
+ if ( month == Inv_Month )
+ month = GetMonth();
return Set(GetNumOfDaysInMonth(year, month), month, year);
}
+wxDateTime& wxDateTime::SetToWeekDayInSameWeek(WeekDay weekday)
+{
+ wxCHECK_MSG( weekday != Inv_WeekDay, wxInvalidDateTime, _T("invalid weekday") );
+
+ WeekDay wdayThis = GetWeekDay();
+ if ( weekday == wdayThis )
+ {
+ // nothing to do
+ return *this;
+ }
+ else if ( weekday < wdayThis )
+ {
+ return Substract(wxTimeSpan::Days(wdayThis - weekday));
+ }
+ else // weekday > wdayThis
+ {
+ return Add(wxTimeSpan::Days(weekday - wdayThis));
+ }
+}
+
+wxDateTime& wxDateTime::SetToNextWeekDay(WeekDay weekday)
+{
+ wxCHECK_MSG( weekday != Inv_WeekDay, wxInvalidDateTime, _T("invalid weekday") );
+
+ int diff;
+ WeekDay wdayThis = GetWeekDay();
+ if ( weekday == wdayThis )
+ {
+ // nothing to do
+ return *this;
+ }
+ else if ( weekday < wdayThis )
+ {
+ // need to advance a week
+ diff = 7 - (wdayThis - weekday);
+ }
+ else // weekday > wdayThis
+ {
+ diff = weekday - wdayThis;
+ }
+
+ return Add(wxTimeSpan::Days(diff));
+}
+
+wxDateTime& wxDateTime::SetToPrevWeekDay(WeekDay weekday)
+{
+ wxCHECK_MSG( weekday != Inv_WeekDay, wxInvalidDateTime, _T("invalid weekday") );
+
+ int diff;
+ WeekDay wdayThis = GetWeekDay();
+ if ( weekday == wdayThis )
+ {
+ // nothing to do
+ return *this;
+ }
+ else if ( weekday > wdayThis )
+ {
+ // need to go to previous week
+ diff = 7 - (weekday - wdayThis);
+ }
+ else // weekday < wdayThis
+ {
+ diff = wdayThis - weekday;
+ }
+
+ return Substract(wxTimeSpan::Days(diff));
+}
+
bool wxDateTime::SetToWeekDay(WeekDay weekday,
int n,
Month month,
wxDateTime::wxDateTime_t wxDateTime::GetDayOfYear(const TimeZone& tz) const
{
- // this array contains the cumulated number of days in all previous months
- // for normal and leap years
- static const wxDateTime_t cumulatedDays[2][MONTHS_IN_YEAR] =
- {
- { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 },
- { 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 }
- };
-
Tm tm(GetTm(tz));
- return cumulatedDays[IsLeapYear(tm.year)][tm.mon] + tm.mday;
+ return gs_cumulatedDays[IsLeapYear(tm.year)][tm.mon] + tm.mday;
}
-wxDateTime::wxDateTime_t wxDateTime::GetWeekOfYear(const TimeZone& tz) const
+wxDateTime::wxDateTime_t wxDateTime::GetWeekOfYear(wxDateTime::WeekFlags flags,
+ const TimeZone& tz) const
{
- // the first week of the year is the one which contains Jan, 4 (according
- // to ISO standard rule), so the year day N0 = 4 + 7*W always lies in the
- // week W+1. As any day N = 7*W + 4 + (N - 4)%7, it lies in the same week
- // as N0 or in the next one.
-
- // TODO this surely may be optimized - I got confused while writing it
+ if ( flags == Default_First )
+ {
+ flags = GetCountry() == USA ? Sunday_First : Monday_First;
+ }
wxDateTime_t nDayInYear = GetDayOfYear(tz);
+ wxDateTime_t week;
- // the week day of the day lying in the first week
- WeekDay wdayStart = wxDateTime(4, Jan, GetYear()).GetWeekDay();
-
- wxDateTime_t week = (nDayInYear - 4) / 7 + 1;
+ WeekDay wd = GetWeekDay(tz);
+ if ( flags == Sunday_First )
+ {
+ week = (nDayInYear - wd + 7) / 7;
+ }
+ else
+ {
+ // have to shift the week days values
+ week = (nDayInYear - (wd - 1 + 7) % 7 + 7) / 7;
+ }
- // notice that Sunday shoould be counted as 7, not 0 here!
- if ( ((nDayInYear - 4) % 7) + (!wdayStart ? 7 : wdayStart) > 7 )
+ // FIXME some more elegant way??
+ WeekDay wdYearStart = wxDateTime(1, Jan, GetYear()).GetWeekDay();
+ if ( wdYearStart == Wed || wdYearStart == Thu )
{
week++;
}
return week;
}
+wxDateTime::wxDateTime_t wxDateTime::GetWeekOfMonth(wxDateTime::WeekFlags flags,
+ const TimeZone& tz) const
+{
+ Tm tm = GetTm(tz);
+ wxDateTime dtMonthStart = wxDateTime(1, tm.mon, tm.year);
+ size_t 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 nWeek;
+}
+
+wxDateTime& wxDateTime::SetToYearDay(wxDateTime::wxDateTime_t yday)
+{
+ int year = GetYear();
+ wxCHECK_MSG( (0 < yday) && (yday <= GetNumberOfDays(year)),
+ wxInvalidDateTime, _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
// ----------------------------------------------------------------------------
}
}
-wxDateTime& wxDateTime::MakeTimezone(const TimeZone& tz)
+wxDateTime& wxDateTime::MakeTimezone(const TimeZone& tz, bool noDST)
{
int secDiff = GetTimeZone() + tz.GetOffset();
- // we need to know whether DST is or not in effect for this date
- if ( IsDST() == 1 )
+ // 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;
{
time += 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);
//else: use generic code below
}
- // 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!
+ // we only parse ANSI C format specifications here, no POSIX 2
+ // complications, no GNU extensions
+ 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
+ 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");
+ }
+
+restart:
+ // 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('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'));
+
+ goto restart;
+ }
+
+ // 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;
+ }
- // NB: may be it would be simpler to "honestly" reimplement strftime()?
+ year *= 10;
+ year += *p++ - _T('0');
+ }
- // 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.
+ if ( *p++ != _T(' ') )
+ {
+ return (wxChar *)NULL;
+ }
- int yearReal = GetYear(tz);
- int year = 1970 + yearReal % 28;
+ // time is in the format hh:mm:ss and seconds are optional
+ if ( !wxIsdigit(*p) )
+ {
+ return (wxChar *)NULL;
+ }
- int nCenturiesInBetween = (year / 100) - (yearReal / 100);
- int nLostWeekDays = nCenturiesInBetween - (nCenturiesInBetween / 400);
+ wxDateTime_t hour = *p++ - _T('0');
- // we have to gain back the "lost" weekdays...
- while ( (nLostWeekDays % 7) != 0 )
+ if ( !wxIsdigit(*p) )
{
- nLostWeekDays += year++ % 4 ? 1 : 2;
+ return (wxChar *)NULL;
}
- // at any rate, we can't go further than 1997 + 28!
- wxASSERT_MSG( year < 2030, _T("logic error in wxDateTime::Format") );
+ hour *= 10;
+ hour += *p++ - _T('0');
- wxString strYear, strYear2;
- strYear.Printf(_T("%d"), year);
- strYear2.Printf(_T("%d"), year % 100);
+ if ( *p++ != _T(':') )
+ {
+ return (wxChar *)NULL;
+ }
- // 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 )
+ if ( !wxIsdigit(*p) )
{
- replacement << (wxChar)-1;
+ return (wxChar *)NULL;
}
- wxString replacement2 = (wxChar)-2;
- while ( fmt.Find(replacement) != wxNOT_FOUND )
+ wxDateTime_t min = *p++ - _T('0');
+
+ if ( !wxIsdigit(*p) )
{
- replacement << (wxChar)-2;
+ return (wxChar *)NULL;
}
- // replace all occurences of year with it
- bool wasReplaced = fmt.Replace(strYear, replacement) > 0;
- if ( !wasReplaced )
- wasReplaced = fmt.Replace(strYear2, replacement2) > 0;
+ min *= 10;
+ min += *p++ - _T('0');
+
+ wxDateTime_t sec = 0;
+ if ( *p++ == _T(':') )
+ {
+ if ( !wxIsdigit(*p) )
+ {
+ return (wxChar *)NULL;
+ }
+
+ sec = *p++ - _T('0');
- // use strftime() to format the same date but in supported year
- wxDateTime dt(*this);
- dt.SetYear(year);
- wxString str = dt.Format(format, tz);
+ if ( !wxIsdigit(*p) )
+ {
+ return (wxChar *)NULL;
+ }
- // 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);
+ sec *= 10;
+ sec += *p++ - _T('0');
+ }
- // and replace back all occurences of replacement string
- if ( wasReplaced )
+ if ( *p++ != _T(' ') )
{
- str.Replace(replacement2, strYear2);
- str.Replace(replacement, strYear);
+ return (wxChar *)NULL;
}
- return str;
+ // 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
+ 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(input, &num) || (num > 31) )
+ {
+ // 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(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(input, &num) || !num || (num > 12) )
+ {
+ // no match
+ return (wxChar *)NULL;
+ }
+
+ haveHour = TRUE;
+ hourIsIn12hFormat = TRUE;
+ hour = num % 12; // 12 should be 0
+ break;
+
+ case _T('j'): // day of the year
+ if ( !GetNumericToken(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(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(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(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(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(input, &num) || (num > 99) )
+ {
+ // no match
+ return (wxChar *)NULL;
+ }
+
+ haveYear = TRUE;
+ year = 1900 + num;
+ break;
+
+ case _T('Y'): // year with century
+ if ( !GetNumericToken(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();
+ }
+ else if ( m_time != 0 )
+ {
+ // 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++;
+
+ wxString today = _T("today");
+ size_t len = today.length();
+ if ( wxString(p, len).CmpNoCase(today) == 0 )
+ {
+ // nothing can follow this, so stop here
+ p += len;
+
+ *this = Today();
+
+ return p;
+ }
+
+ // 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
+ wxStringTokenizer tok(p, _T(",/-\t\n "));
+ while ( tok.HasMoreTokens() )
+ {
+ wxString token = tok.GetNextToken();
+
+ // is it a number?
+ unsigned long val;
+ if ( token.ToULong(&val) )
+ {
+ // guess what this number is
+
+ bool isDay = FALSE,
+ isMonth = FALSE,
+ // only years are counted from 0
+ isYear = (val == 0) || (val > 31);
+ if ( !isYear )
+ {
+ // may be the month or month day or the year, assume the
+ // month day by default and fallback to month if the range
+ // allow it or to the year if our assumption doesn't work
+ if ( haveDay )
+ {
+ // we already have the day, so may only be a month or year
+ if ( val > 12 )
+ {
+ isYear = TRUE;
+ }
+ else
+ {
+ isMonth = TRUE;
+ }
+ }
+ else // it may be day
+ {
+ isDay = TRUE;
+
+ // check the range
+ if ( haveMon )
+ {
+ if ( val > GetNumOfDaysInMonth(haveYear ? year
+ : Inv_Year,
+ mon) )
+ {
+ // oops, it can't be a day finally
+ isDay = FALSE;
+
+ if ( val > 12 )
+ {
+ isYear = TRUE;
+ }
+ else
+ {
+ isMonth = TRUE;
+ }
+ }
+ }
+ }
+ }
+
+ // remember that we have this and stop the scan if it's the second
+ // time we find this, except for the day logic (see there)
+ if ( isYear )
+ {
+ if ( haveYear )
+ {
+ break;
+ }
+
+ haveYear = TRUE;
+
+ // no roll over - 99 means 99, not 1999 for us
+ year = val;
+ }
+ else if ( isMonth )
+ {
+ if ( haveMon )
+ {
+ break;
+ }
+
+ haveMon = TRUE;
+
+ mon = (wxDateTime::Month)val;
+ }
+ else
+ {
+ wxASSERT_MSG( isDay, _T("logic error") );
+
+ if ( haveDay )
+ {
+ // may be were mistaken when we found it for the first
+ // time? may be it was a month or year instead?
+ //
+ // this ability to "backtrack" allows us to correctly parse
+ // both things like 01/13 and 13/01 - but, of course, we
+ // still can't resolve the ambiguity in 01/02 (it will be
+ // Feb 1 for us, not Jan 2 as americans might expect!)
+ if ( (day <= 12) && !haveMon )
+ {
+ // exchange day and month
+ mon = (wxDateTime::Month)day;
+
+ haveMon = TRUE;
+ }
+ else if ( !haveYear )
+ {
+ // exchange day and year
+ year = day;
+
+ haveYear = TRUE;
+ }
+ }
+
+ haveDay = TRUE;
+
+ day = val;
+ }
+ }
+ else // not a number
+ {
+ mon = GetMonthFromName(token, Name_Full | Name_Abbr);
+ if ( mon != Inv_Month )
+ {
+ // it's a month
+ if ( haveMon )
+ {
+ break;
+ }
+
+ haveMon = TRUE;
+ }
+ else
+ {
+ wday = GetWeekDayFromName(token, Name_Full | Name_Abbr);
+ if ( wday != Inv_WeekDay )
+ {
+ // a week day
+ if ( haveWDay )
+ {
+ break;
+ }
+
+ haveWDay = TRUE;
+ }
+ else
+ {
+ // 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 otherwise
+ };
+
+ 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;
+ }
+ }
+ }
+ }
+
+ // 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("no day, no weekday hence no date."));
+
+ return (wxChar *)NULL;
+ }
+
+ if ( haveWDay && (haveMon || haveYear || haveDay) &&
+ !(haveMon && haveMon && haveYear) )
+ {
+ // 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;
+ }
+
+ if ( !haveMon )
+ {
+ mon = GetCurrentMonth();
+ }
+
+ if ( !haveYear )
+ {
+ year = GetCurrentYear();
+ }
+
+ if ( haveDay )
+ {
+ Set(day, mon, year);
+
+ if ( haveWDay )
+ {
+ // check that it is really the same
+ if ( GetWeekDay() != wday )
+ {
+ // inconsistency detected
+ return (wxChar *)NULL;
+ }
+ }
+ }
+ else // haveWDay
+ {
+ *this = Today();
+
+ SetToWeekDayInSameWeek(wday);
+ }
+
+ // return the pointer to the next char
+ return p + wxStrlen(p) - wxStrlen(tok.GetString());
+}
+
+const wxChar *wxDateTime::ParseTime(const wxChar *time)
+{
+ wxCHECK_MSG( time, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") );
+
+ // first try some extra things
+ static const struct
+ {
+ const wxChar *name;
+ wxDateTime_t hour;
+ } stdTimes[] =
+ {
+ { wxTRANSLATE("noon"), 12 },
+ { wxTRANSLATE("midnight"), 00 },
+ // anything else?
+ };
+
+ for ( size_t n = 0; n < WXSIZEOF(stdTimes); n++ )
+ {
+ wxString timeString = wxGetTranslation(stdTimes[n].name);
+ size_t len = timeString.length();
+ if ( timeString.CmpNoCase(wxString(time, len)) == 0 )
+ {
+ Set(stdTimes[n].hour, 0, 0);
+
+ return time + len;
+ }
+ }
+
+ // 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"));
+ }
+
+ if ( !result )
+ {
+ // 12hour with AM/PM?
+ result = ParseFormat(time, _T("%I:%M:%S %p"));
+ }
+
+ if ( !result )
+ {
+ // without seconds?
+ result = ParseFormat(time, _T("%H:%M"));
+ }
+
+ if ( !result )
+ {
+ // 12hour with AM/PM but without seconds?
+ result = ParseFormat(time, _T("%I:%M %p"));
+ }
+
+ if ( !result )
+ {
+ // just the hour?
+ result = ParseFormat(time, _T("%H"));
+ }
+
+ if ( !result )
+ {
+ // just the hour and AM/PM?
+ result = ParseFormat(time, _T("%I %p"));
+ }
+
+ // TODO: parse timezones
+
+ return result;
}
// ============================================================================
break;
case 'l':
- tmp.Printf(_T("%03d"), GetMilliseconds().GetValue());
+ tmp.Printf(_T("%03ld"), GetMilliseconds().ToLong());
break;
case 'M':
break;
case 'S':
- tmp.Printf(_T("%02d"), GetSeconds().GetValue());
+ tmp.Printf(_T("%02ld"), GetSeconds().ToLong());
break;
}
projects / wxWidgets.git / blobdiff