// so long as the above copyright and this permission statement
// are retained in all copies.
//
-// Licence: wxWindows license
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
/*
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "datetime.h"
#endif
#pragma hdrstop
#endif
+#if !defined(wxUSE_DATETIME) || wxUSE_DATETIME
+
#ifndef WX_PRECOMP
#include "wx/string.h"
- #include "wx/intl.h"
#include "wx/log.h"
#endif // WX_PRECOMP
+#include "wx/intl.h"
#include "wx/thread.h"
#include "wx/tokenzr.h"
+#include "wx/module.h"
-#define wxDEFINE_TIME_CONSTANTS // before including datetime.h
+#include <ctype.h>
#include "wx/datetime.h"
+#include "wx/stopwatch.h" // for wxGetLocalTimeMillis()
+
+const long wxDateTime::TIME_T_FACTOR = 1000l;
+
+#if wxUSE_EXTENDED_RTTI
+
+template<> void wxStringReadValue(const wxString &s , wxDateTime &data )
+{
+ data.ParseFormat(s,wxT("%Y-%m-%d %H:%M:%S")) ;
+}
+
+template<> void wxStringWriteValue(wxString &s , const wxDateTime &data )
+{
+ s = data.Format(wxT("%Y-%m-%d %H:%M:%S")) ;
+}
+
+wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter<wxDateTime> , wxFromStringConverter<wxDateTime>)
+
+#endif
+//
// ----------------------------------------------------------------------------
// conditional compilation
// ----------------------------------------------------------------------------
-#if defined(HAVE_STRPTIME) && defined(__LINUX__)
+#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):
//
#undef HAVE_STRPTIME
#endif // broken strptime()
-#ifndef WX_TIMEZONE
+#if defined(__MWERKS__) && wxUSE_UNICODE
+ #include <wtime.h>
+#endif
+
+#if !defined(WX_TIMEZONE) && !defined(WX_GMTOFF_IN_TM)
#if defined(__BORLANDC__) || defined(__MINGW32__) || defined(__VISAGECPP__)
#define WX_TIMEZONE _timezone
+ #elif defined(__MWERKS__)
+ long wxmw_timezone = 28800;
+ #define WX_TIMEZONE wxmw_timezone
+ #elif defined(__DJGPP__) || defined(__WINE__)
+ #include <sys/timeb.h>
+ #include <values.h>
+ static long wxGetTimeZone()
+ {
+ static long timezone = MAXLONG; // invalid timezone
+ if (timezone == MAXLONG)
+ {
+ struct timeb tb;
+ ftime(&tb);
+ timezone = tb.timezone;
+ }
+ return timezone;
+ }
+ #define WX_TIMEZONE wxGetTimeZone()
+ #elif defined(__DARWIN__)
+ #define WX_GMTOFF_IN_TM
#else // unknown platform - try timezone
#define WX_TIMEZONE timezone
#endif
-#endif // !WX_TIMEZONE
+#endif // !WX_TIMEZONE && !WX_GMTOFF_IN_TM
+
+// ----------------------------------------------------------------------------
+// macros
+// ----------------------------------------------------------------------------
+
+// debugging helper: just a convenient replacement of wxCHECK()
+#define wxDATETIME_CHECK(expr, msg) \
+ if ( !(expr) ) \
+ { \
+ wxFAIL_MSG(msg); \
+ *this = wxInvalidDateTime; \
+ return *this; \
+ }
+
+// ----------------------------------------------------------------------------
+// private classes
+// ----------------------------------------------------------------------------
+
+class wxDateTimeHolidaysModule : public wxModule
+{
+public:
+ virtual bool OnInit()
+ {
+ wxDateTimeHolidayAuthority::AddAuthority(new wxDateTimeWorkDays);
+
+ return TRUE;
+ }
+
+ virtual void OnExit()
+ {
+ wxDateTimeHolidayAuthority::ClearAllAuthorities();
+ wxDateTimeHolidayAuthority::ms_authorities.clear();
+ }
+
+private:
+ DECLARE_DYNAMIC_CLASS(wxDateTimeHolidaysModule)
+};
+
+IMPLEMENT_DYNAMIC_CLASS(wxDateTimeHolidaysModule, wxModule)
// ----------------------------------------------------------------------------
// constants
// some trivial ones
static const int MONTHS_IN_YEAR = 12;
-static const int SECONDS_IN_MINUTE = 60;
+static const int SEC_PER_MIN = 60;
+
+static const int MIN_PER_HOUR = 60;
+
+static const int HOURS_PER_DAY = 24;
static const long SECONDS_PER_DAY = 86400l;
+static const int DAYS_PER_WEEK = 7;
+
static const long MILLISECONDS_PER_DAY = 86400000l;
// this is the integral part of JDN of the midnight of Jan 1, 1970
};
// ----------------------------------------------------------------------------
-// globals
+// global data
// ----------------------------------------------------------------------------
-// a critical section is needed to protect GetTimeZone() static
-// variable in MT case
-#if wxUSE_THREADS
- wxCriticalSection gs_critsectTimezone;
-#endif // wxUSE_THREADS
+// in the fine tradition of ANSI C we use our equivalent of (time_t)-1 to
+// indicate an invalid wxDateTime object
+const wxDateTime wxDefaultDateTime;
+
+wxDateTime::Country wxDateTime::ms_country = wxDateTime::Country_Unknown;
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
+// debugger helper: shows what the date really is
+#ifdef __WXDEBUG__
+extern const wxChar *wxDumpDate(const wxDateTime* dt)
+{
+ static wxChar buf[128];
+
+ wxStrcpy(buf, dt->Format(_T("%Y-%m-%d (%a) %H:%M:%S")));
+
+ return buf;
+}
+#endif // Debug
+
// get the number of days in the given month of the given year
static inline
wxDateTime::wxDateTime_t GetNumOfDaysInMonth(int year, wxDateTime::Month month)
return daysInMonth[wxDateTime::IsLeapYear(year)][month];
}
-// ensure that the timezone variable is set by calling localtime
+// returns the time zone in the C sense, i.e. the difference UTC - local
+// (in seconds)
static int GetTimeZone()
{
+#ifdef WX_GMTOFF_IN_TM
// set to TRUE when the timezone is set
static bool s_timezoneSet = FALSE;
+ static long gmtoffset = LONG_MAX; // invalid timezone
- wxCRIT_SECT_LOCKER(lock, gs_critsectTimezone);
-
+ // ensure that the timezone variable is set by calling localtime
if ( !s_timezoneSet )
{
// just call localtime() instead of figuring out whether this system
// supports tzset(), _tzset() or something else
- time_t t;
- (void)localtime(&t);
+ time_t t = 0;
+ struct tm *tm;
+ tm = localtime(&t);
s_timezoneSet = TRUE;
+
+ // note that GMT offset is the opposite of time zone and so to return
+ // consistent results in both WX_GMTOFF_IN_TM and !WX_GMTOFF_IN_TM
+ // cases we have to negate it
+ gmtoffset = -tm->tm_gmtoff;
}
+ return (int)gmtoffset;
+#else // !WX_GMTOFF_IN_TM
return (int)WX_TIMEZONE;
+#endif // WX_GMTOFF_IN_TM/!WX_GMTOFF_IN_TM
}
// return the integral part of the JDN for the midnight of the given date (to
- JDN_OFFSET;
}
-// this function is a wrapper around strftime(3)
+// this function is a wrapper around strftime(3) adding error checking
static wxString CallStrftime(const wxChar *format, const tm* tm)
{
wxChar buf[4096];
return wxString(buf);
}
+#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)
+ extern "C" char *strptime(const char *, const char *, struct tm *);
+#endif
+
+// Unicode-friendly strptime() wrapper
+static const wxChar *
+CallStrptime(const wxChar *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
+ 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
+ // 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)
return wd;
}
-// scans all digits and returns the resulting number
-static bool GetNumericToken(const wxChar*& p, unsigned long *number)
+// scans all digits (but no more than len) and returns the resulting number
+static bool GetNumericToken(size_t len, const wxChar*& p, unsigned long *number)
{
+ size_t n = 1;
wxString s;
while ( wxIsdigit(*p) )
{
s += *p++;
+
+ if ( len && ++n > len )
+ break;
}
return !!s && s.ToULong(number);
// 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++;
mon = (wxDateTime::Month)(mon + monDiff);
wxASSERT_MSG( mon >= 0 && mon < MONTHS_IN_YEAR, _T("logic error") );
+
+ // NB: we don't check here that the resulting date is valid, this function
+ // is private and the caller must check it if needed
}
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);
{
tm tm;
InitTm(tm);
+ wxChar buffer[64];
+ // @Note: Do not call 'CallStrftime' here! CallStrftime checks the return code
+ // and causes an assertion failed if the buffer is to small (which is good) - OR -
+ // if strftime does not return anything because the format string is invalid - OR -
+ // if there are no 'am' / 'pm' tokens defined for the current locale (which is not good).
+ // wxDateTime::ParseTime will try several different formats to parse the time.
+ // As a result, GetAmPmStrings might get called, even if the current locale
+ // does not define any 'am' / 'pm' tokens. In this case, wxStrftime would
+ // assert, even though it is a perfectly legal use.
if ( am )
{
- *am = CallStrftime(_T("%p"), &tm);
+ if (wxStrftime(buffer, sizeof buffer, _T("%p"), &tm) > 0)
+ *am = wxString(buffer);
+ else
+ *am = wxString();
}
if ( pm )
{
tm.tm_hour = 13;
- *pm = CallStrftime(_T("%p"), &tm);
+ if (wxStrftime(buffer, sizeof buffer, _T("%p"), &tm) > 0)
+ *pm = wxString(buffer);
+ else
+ *pm = wxString();
}
}
if ( !IsDSTApplicable(year, country) )
{
- return ms_InvDateTime;
+ return wxInvalidDateTime;
}
wxDateTime dt;
if ( !IsDSTApplicable(year, country) )
{
- return ms_InvDateTime;
+ return wxInvalidDateTime;
}
wxDateTime dt;
// constructors and assignment operators
// ----------------------------------------------------------------------------
+// return the current time with ms precision
+/* static */ wxDateTime wxDateTime::UNow()
+{
+ return wxDateTime(wxGetLocalTimeMillis());
+}
+
// the values in the tm structure contain the local time
wxDateTime& wxDateTime::Set(const struct tm& tm)
{
- wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") );
-
struct tm tm2(tm);
time_t timet = mktime(&tm2);
wxFAIL_MSG( _T("mktime() failed") );
- return ms_InvDateTime;
+ *this = wxInvalidDateTime;
+
+ return *this;
}
else
{
wxDateTime_t second,
wxDateTime_t millisec)
{
- wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") );
-
// we allow seconds to be 61 to account for the leap seconds, even if we
// don't use them really
- wxCHECK_MSG( hour < 24 && second < 62 && minute < 60 && millisec < 1000,
- ms_InvDateTime,
- _T("Invalid time in wxDateTime::Set()") );
+ wxDATETIME_CHECK( hour < 24 &&
+ second < 62 &&
+ minute < 60 &&
+ millisec < 1000,
+ _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") );
+ wxDATETIME_CHECK( tm, _T("localtime() failed") );
// adjust the time
tm->tm_hour = hour;
wxDateTime_t second,
wxDateTime_t millisec)
{
- wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") );
-
- wxCHECK_MSG( hour < 24 && second < 62 && minute < 60 && millisec < 1000,
- ms_InvDateTime,
- _T("Invalid time in wxDateTime::Set()") );
+ wxDATETIME_CHECK( hour < 24 &&
+ second < 62 &&
+ minute < 60 &&
+ millisec < 1000,
+ _T("Invalid time in wxDateTime::Set()") );
ReplaceDefaultYearMonthWithCurrent(&year, &month);
- wxCHECK_MSG( (0 < day) && (day <= GetNumberOfDays(month, year)),
- ms_InvDateTime,
- _T("Invalid date in wxDateTime::Set()") );
+ wxDATETIME_CHECK( (0 < day) && (day <= GetNumberOfDays(month, year)),
+ _T("Invalid date in wxDateTime::Set()") );
// the range of time_t type (inclusive)
static const int yearMinInRange = 1970;
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;
+}
+
+// ----------------------------------------------------------------------------
+// DOS Date and Time Format functions
+// ----------------------------------------------------------------------------
+// the dos date and time value is an unsigned 32 bit value in the format:
+// YYYYYYYMMMMDDDDDhhhhhmmmmmmsssss
+//
+// Y = year offset from 1980 (0-127)
+// M = month (1-12)
+// D = day of month (1-31)
+// h = hour (0-23)
+// m = minute (0-59)
+// s = bisecond (0-29) each bisecond indicates two seconds
+// ----------------------------------------------------------------------------
+
+wxDateTime& wxDateTime::SetFromDOS(unsigned long ddt)
+{
+ struct tm tm;
+ InitTm(tm);
+
+ long year = ddt & 0xFE000000;
+ year >>= 25;
+ year += 80;
+ tm.tm_year = year;
+
+ long month = ddt & 0x1E00000;
+ month >>= 21;
+ month -= 1;
+ tm.tm_mon = month;
+
+ long day = ddt & 0x1F0000;
+ day >>= 16;
+ tm.tm_mday = day;
+
+ long hour = ddt & 0xF800;
+ hour >>= 11;
+ tm.tm_hour = hour;
+
+ long minute = ddt & 0x7E0;
+ minute >>= 5;
+ tm.tm_min = minute;
+
+ long second = ddt & 0x1F;
+ tm.tm_sec = second * 2;
+
+ return Set(mktime(&tm));
+}
+
+unsigned long wxDateTime::GetAsDOS() const
+{
+ unsigned long ddt;
+ time_t ticks = GetTicks();
+ struct tm *tm = localtime(&ticks);
+
+ long year = tm->tm_year;
+ year -= 80;
+ year <<= 25;
+
+ long month = tm->tm_mon;
+ month += 1;
+ month <<= 21;
+
+ long day = tm->tm_mday;
+ day <<= 16;
+
+ long hour = tm->tm_hour;
+ hour <<= 11;
+
+ long minute = tm->tm_min;
+ minute <<= 5;
+
+ long second = tm->tm_sec;
+ second /= 2;
+
+ ddt = year | month | day | hour | minute | second;
+ return ddt;
+}
+
// ----------------------------------------------------------------------------
// time_t <-> broken down time conversions
// ----------------------------------------------------------------------------
wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const
{
-#ifdef __VMS__
- int time2;
-#endif
wxASSERT_MSG( IsValid(), _T("invalid wxDateTime") );
time_t time = GetTicks();
tm = localtime(&time);
// should never happen
- wxCHECK_MSG( tm, Tm(), _T("gmtime() failed") );
+ wxCHECK_MSG( tm, Tm(), _T("localtime() failed") );
}
else
{
- time += tz.GetOffset();
-#ifdef __VMS__ /* time is unsigned so VMS gives a warning on the original */
- time2 = (int) time;
- if ( time2 >= 0 )
+ time += (time_t)tz.GetOffset();
+#if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning
+ int time2 = (int) time;
+ if ( time2 >= 0 )
#else
- if ( time >= 0 )
+ if ( time >= 0 )
#endif
{
tm = gmtime(&time);
if ( tm )
{
- return Tm(*tm, tz);
+ // adjust the milliseconds
+ Tm tm2(*tm, tz);
+ long timeOnly = (m_time % MILLISECONDS_PER_DAY).ToLong();
+ tm2.msec = (wxDateTime_t)(timeOnly % 1000);
+ return tm2;
}
//else: use generic code below
}
wxASSERT_MSG( jdn > -2, _T("JDN out of range") );
// calculate the century
- int temp = (jdn + JDN_OFFSET) * 4 - 1;
- int century = temp / DAYS_PER_400_YEARS;
+ long temp = (jdn + JDN_OFFSET) * 4 - 1;
+ long century = temp / DAYS_PER_400_YEARS;
// then the year and day of year (1 <= dayOfYear <= 366)
temp = ((temp % DAYS_PER_400_YEARS) / 4) * 4 + 3;
- int year = (century * 100) + (temp / DAYS_PER_4_YEARS);
- int dayOfYear = (temp % DAYS_PER_4_YEARS) / 4 + 1;
+ long year = (century * 100) + (temp / DAYS_PER_4_YEARS);
+ long dayOfYear = (temp % DAYS_PER_4_YEARS) / 4 + 1;
// and finally the month and day of the month
temp = dayOfYear * 5 - 3;
- int month = temp / DAYS_PER_5_MONTHS;
- int day = (temp % DAYS_PER_5_MONTHS) / 5 + 1;
+ long month = temp / DAYS_PER_5_MONTHS;
+ long day = (temp % DAYS_PER_5_MONTHS) / 5 + 1;
// month is counted from March - convert to normal
if ( month < 10 )
// check that the algorithm gave us something reasonable
wxASSERT_MSG( (0 < month) && (month <= 12), _T("invalid month") );
wxASSERT_MSG( (1 <= day) && (day < 32), _T("invalid day") );
- wxASSERT_MSG( (INT_MIN <= year) && (year <= INT_MAX),
- _T("year range overflow") );
// construct Tm from these values
Tm tm;
tm.year = (int)year;
tm.mon = (Month)(month - 1); // algorithm yields 1 for January, not 0
tm.mday = (wxDateTime_t)day;
- tm.msec = timeOnly % 1000;
+ tm.msec = (wxDateTime_t)(timeOnly % 1000);
timeOnly -= tm.msec;
timeOnly /= 1000; // now we have time in seconds
- tm.sec = timeOnly % 60;
+ tm.sec = (wxDateTime_t)(timeOnly % 60);
timeOnly -= tm.sec;
timeOnly /= 60; // now we have time in minutes
- tm.min = timeOnly % 60;
+ tm.min = (wxDateTime_t)(timeOnly % 60);
timeOnly -= tm.min;
- tm.hour = timeOnly / 60;
+ tm.hour = (wxDateTime_t)(timeOnly / 60);
return tm;
}
tm.year += diff.GetYears();
tm.AddMonths(diff.GetMonths());
+
+ // check that the resulting date is valid
+ if ( tm.mday > GetNumOfDaysInMonth(tm.year, tm.mon) )
+ {
+ // We suppose that when adding one month to Jan 31 we want to get Feb
+ // 28 (or 29), i.e. adding a month to the last day of the month should
+ // give the last day of the next month which is quite logical.
+ //
+ // Unfortunately, there is no logic way to understand what should
+ // Jan 30 + 1 month be - Feb 28 too or Feb 27 (assuming non leap year)?
+ // We make it Feb 28 (last day too), but it is highly questionable.
+ tm.mday = GetNumOfDaysInMonth(tm.year, tm.mon);
+ }
+
tm.AddDays(diff.GetTotalDays());
Set(tm);
+ wxASSERT_MSG( IsSameTime(tm),
+ _T("Add(wxDateSpan) shouldn't modify time") );
+
return *this;
}
// Weekday and monthday stuff
// ----------------------------------------------------------------------------
+bool wxDateTime::SetToTheWeek(wxDateTime_t numWeek,
+ WeekDay weekday,
+ WeekFlags flags)
+{
+ wxASSERT_MSG( numWeek > 0,
+ _T("invalid week number: weeks are counted from 1") );
+
+ int year = GetYear();
+
+ // Jan 4 always lies in the 1st week of the year
+ Set(4, Jan, year);
+ SetToWeekDayInSameWeek(weekday, flags) += wxDateSpan::Weeks(numWeek - 1);
+
+ if ( GetYear() != year )
+ {
+ // oops... numWeek was too big
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
wxDateTime& wxDateTime::SetToLastMonthDay(Month month,
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)
+wxDateTime& wxDateTime::SetToWeekDayInSameWeek(WeekDay weekday, WeekFlags flags)
{
- wxCHECK_MSG( weekday != Inv_WeekDay, ms_InvDateTime, _T("invalid weekday") );
+ wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") );
- WeekDay wdayThis = GetWeekDay();
+ int wdayThis = GetWeekDay();
if ( weekday == wdayThis )
{
// nothing to do
return *this;
}
- else if ( weekday < wdayThis )
+
+ if ( flags == Default_First )
+ {
+ flags = GetCountry() == USA ? Sunday_First : Monday_First;
+ }
+
+ // the logic below based on comparing weekday and wdayThis works if Sun (0)
+ // is the first day in the week, but breaks down for Monday_First case so
+ // we adjust the week days in this case
+ if( flags == Monday_First )
+ {
+ if ( wdayThis == Sun )
+ wdayThis += 7;
+ }
+ //else: Sunday_First, nothing to do
+
+ // go forward or back in time to the day we want
+ if ( weekday < wdayThis )
{
- return Substract(wxTimeSpan::Days(wdayThis - weekday));
+ return Subtract(wxDateSpan::Days(wdayThis - weekday));
}
else // weekday > wdayThis
{
- return Add(wxTimeSpan::Days(weekday - wdayThis));
+ return Add(wxDateSpan::Days(weekday - wdayThis));
}
}
wxDateTime& wxDateTime::SetToNextWeekDay(WeekDay weekday)
{
- wxCHECK_MSG( weekday != Inv_WeekDay, ms_InvDateTime, _T("invalid weekday") );
+ wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") );
int diff;
WeekDay wdayThis = GetWeekDay();
diff = weekday - wdayThis;
}
- return Add(wxTimeSpan::Days(diff));
+ return Add(wxDateSpan::Days(diff));
}
wxDateTime& wxDateTime::SetToPrevWeekDay(WeekDay weekday)
{
- wxCHECK_MSG( weekday != Inv_WeekDay, ms_InvDateTime, _T("invalid weekday") );
+ wxDATETIME_CHECK( weekday != Inv_WeekDay, _T("invalid weekday") );
int diff;
WeekDay wdayThis = GetWeekDay();
diff = wdayThis - weekday;
}
- return Substract(wxTimeSpan::Days(diff));
+ return Subtract(wxDateSpan::Days(diff));
}
bool wxDateTime::SetToWeekDay(WeekDay weekday,
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
{
-#if 1
- // 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;
-#else // 0
- // an attempt at doing it simpler - but this doesn't quite work...
- return (WeekDay)((GetDayOfYear(tz) - (GetWeekDay(tz) - 1 + 7) % 7 + 7) / 7);
-#endif // 0/1
}
-wxDateTime::wxDateTime_t wxDateTime::GetWeekOfMonth(const TimeZone& tz) const
+wxDateTime::wxDateTime_t wxDateTime::GetWeekOfMonth(wxDateTime::WeekFlags flags,
+ const TimeZone& tz) const
{
- size_t nWeek = 0;
-
- wxDateTime dt(*this);
- do
+ Tm tm = GetTm(tz);
+ wxDateTime dtMonthStart = wxDateTime(1, tm.mon, tm.year);
+ int nWeek = GetWeekOfYear(flags) - dtMonthStart.GetWeekOfYear(flags) + 1;
+ if ( nWeek < 0 )
{
- nWeek++;
-
- dt -= wxTimeSpan::Week();
+ // this may happen for January when Jan, 1 is the last week of the
+ // previous year
+ nWeek += IsLeapYear(tm.year - 1) ? 53 : 52;
}
- while ( dt.GetMonth(tz) == GetMonth(tz) );
- return nWeek;
+ return (wxDateTime::wxDateTime_t)nWeek;
}
wxDateTime& wxDateTime::SetToYearDay(wxDateTime::wxDateTime_t yday)
{
int year = GetYear();
- wxCHECK_MSG( (0 < yday) && (yday <= GetNumberOfDays(year)),
- ms_InvDateTime, _T("invalid year day") );
+ wxDATETIME_CHECK( (0 < yday) && (yday <= GetNumberOfDays(year)),
+ _T("invalid year day") );
bool isLeap = IsLeapYear(year);
for ( Month mon = Jan; mon < Inv_Month; wxNextMonth(mon) )
// for Dec, we can't compare with gs_cumulatedDays[mon + 1], but we
// don't need it neither - because of the CHECK above we know that
// yday lies in December then
- if ( (mon == Dec) || (yday < gs_cumulatedDays[isLeap][mon + 1]) )
+ if ( (mon == Dec) || (yday <= gs_cumulatedDays[isLeap][mon + 1]) )
{
Set(yday - gs_cumulatedDays[isLeap][mon], mon, year);
wxDateTime& wxDateTime::MakeTimezone(const TimeZone& tz, bool noDST)
{
- int secDiff = GetTimeZone() + tz.GetOffset();
+ 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
secDiff -= 3600;
}
- return Substract(wxTimeSpan::Seconds(secDiff));
+ return Subtract(wxTimeSpan::Seconds(secDiff));
}
// ----------------------------------------------------------------------------
wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
{
-#ifdef __VMS__
- int time2;
-#endif
wxCHECK_MSG( format, _T(""), _T("NULL format in wxDateTime::Format") );
+ // we have to use our own implementation if the date is out of range of
+ // strftime() or if we use non standard specificators
time_t time = GetTicks();
- if ( time != (time_t)-1 )
+ if ( (time != (time_t)-1) && !wxStrstr(format, _T("%l")) )
{
// use strftime()
tm *tm;
}
else
{
- time += tz.GetOffset();
+ time += (int)tz.GetOffset();
-#ifdef __VMS__ /* time is unsigned so VMS gives a warning on the original */
- time2 = (int) time;
+#if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning
+ int time2 = (int) time;
if ( time2 >= 0 )
#else
if ( time >= 0 )
}
// we only parse ANSI C format specifications here, no POSIX 2
- // complications, no GNU extensions
+ // complications, no GNU extensions but we do add support for a "%l" format
+ // specifier allowing to get the number of milliseconds
Tm tm = GetTm(tz);
// used for calls to strftime() when we only deal with time
break;
case _T('j'): // day of year has 3 digits
+ case _T('l'): // milliseconds have 3 digits
fmt = _T("%03d");
break;
+ case _T('w'): // week day as number has only one
+ fmt = _T("%d");
+ break;
+
default:
// it's either another valid format specifier in which case
// the format is "%02d" (for all the rest) or we have the
fmt = _T("%02d");
}
-restart:
- // start of the format specification
- switch ( *p )
+ bool restart = TRUE;
+ while ( restart )
{
- 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;
+ restart = FALSE;
- case _T('b'): // a month name
- case _T('B'):
- res += GetMonthName(tm.mon,
- *p == _T('b') ? Name_Abbr : Name_Full);
- break;
+ // 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('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
+ 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!
{
- year = 1970 + mod28 - 10; // 1970 == 10 (mod 28)
- }
+ // 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;
+ 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);
+ // 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;
- }
+ // 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") );
+ // 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);
+ 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;
- }
+ // 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;
+ 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;
- // replace all occurences of year with it
- bool wasReplaced = fmt.Replace(strYear, replacement) > 0;
- if ( !wasReplaced )
- wasReplaced = fmt.Replace(strYear2, replacement2) > 0;
+ case _T('d'): // day of a month (01-31)
+ res += wxString::Format(fmt, tm.mday);
+ break;
- // 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 )
+ 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)
{
- str.Replace(replacement2, strYear2);
- str.Replace(replacement, strYear);
+ // 24h -> 12h, 0h -> 12h too
+ int hour12 = tm.hour > 12 ? tm.hour - 12
+ : tm.hour ? tm.hour : 12;
+ res += wxString::Format(fmt, hour12);
}
+ break;
- res += str;
- }
- break;
+ case _T('j'): // day of the year
+ res += wxString::Format(fmt, GetDayOfYear(tz));
+ break;
- case _T('d'): // day of a month (01-31)
- res += wxString::Format(fmt, tm.mday);
- break;
+ case _T('l'): // milliseconds (NOT STANDARD)
+ res += wxString::Format(fmt, GetMillisecond(tz));
+ break;
- case _T('H'): // hour in 24h format (00-23)
- res += wxString::Format(fmt, tm.hour);
- break;
+ case _T('m'): // month as a number (01-12)
+ res += wxString::Format(fmt, tm.mon + 1);
+ 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('M'): // minute as a decimal number (00-59)
+ res += wxString::Format(fmt, tm.min);
+ break;
- case _T('j'): // day of the year
- res += wxString::Format(fmt, GetDayOfYear(tz));
- break;
+ case _T('p'): // AM or PM string
+ res += CallStrftime(_T("%p"), &tmTimeOnly);
+ break;
- case _T('m'): // month as a number (01-12)
- res += wxString::Format(fmt, tm.mon + 1);
- break;
+ case _T('S'): // second as a decimal number (00-61)
+ res += wxString::Format(fmt, tm.sec);
+ break;
- case _T('M'): // minute as a decimal number (00-59)
- res += wxString::Format(fmt, tm.min);
- break;
+ case _T('U'): // week number in the year (Sunday 1st week day)
+ res += wxString::Format(fmt, GetWeekOfYear(Sunday_First, tz));
+ break;
- case _T('p'): // AM or PM string
- res += CallStrftime(_T("%p"), &tmTimeOnly);
- break;
+ case _T('W'): // week number in the year (Monday 1st week day)
+ res += wxString::Format(fmt, GetWeekOfYear(Monday_First, tz));
+ break;
- case _T('S'): // second as a decimal number (00-61)
- res += wxString::Format(fmt, tm.sec);
- break;
+ case _T('w'): // weekday as a number (0-6), Sunday = 0
+ res += wxString::Format(fmt, tm.GetWeekDay());
+ break;
- case _T('U'): // week number in the year (Sunday 1st week day)
- {
- int week = (GetDayOfYear(tz) - tm.GetWeekDay() + 7) / 7;
- res += wxString::Format(fmt, week);
- }
- break;
+ // case _T('x'): -- handled with "%c"
- case _T('W'): // week number in the year (Monday 1st week day)
- res += wxString::Format(fmt, GetWeekOfYear(tz));
- break;
+ case _T('X'): // locale default time representation
+ // just use strftime() to format the time for us
+ res += CallStrftime(_T("%X"), &tmTimeOnly);
+ break;
- case _T('w'): // weekday as a number (0-6), Sunday = 0
- res += wxString::Format(fmt, tm.GetWeekDay());
- break;
+ case _T('y'): // year without century (00-99)
+ res += wxString::Format(fmt, tm.year % 100);
+ break;
- // case _T('x'): -- handled with "%c"
+ case _T('Y'): // year with century
+ res += wxString::Format(fmt, tm.year);
+ break;
- case _T('X'): // locale default time representation
- // just use strftime() to format the time for us
- res += CallStrftime(_T("%X"), &tmTimeOnly);
- break;
+ case _T('Z'): // timezone name
+ res += CallStrftime(_T("%Z"), &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;
+ }
- 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'));
- if ( !fmt.IsEmpty() )
- {
- // we've only got the flags and width so far in fmt
- fmt.Prepend(_T('%'));
- fmt.Append(_T('d'));
+ restart = TRUE;
- goto restart;
- }
+ break;
+ }
- // no, it wasn't the width
- wxFAIL_MSG(_T("unknown format specificator"));
+ // no, it wasn't the width
+ wxFAIL_MSG(_T("unknown format specificator"));
- // fall through and just copy it nevertheless
+ // fall through and just copy it nevertheless
- case _T('%'): // a percent sign
- res += *p;
- break;
+ case _T('%'): // a percent sign
+ res += *p;
+ break;
- case 0: // the end of string
- wxFAIL_MSG(_T("missing format at the end of string"));
+ 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;
+ // just put the '%' which was the last char in format
+ res += _T('%');
+ break;
+ }
}
}
// the spec was correct
Set(day, mon, year, hour, min, sec);
- MakeTimezone(60*(wxDateTime_t)offset);
+ MakeTimezone((wxDateTime_t)(60*offset));
return p;
}
}
// start of a format specification
- switch ( *++fmt )
+
+ // parse the optional width
+ size_t width = 0;
+ while ( wxIsdigit(*++fmt) )
+ {
+ width *= 10;
+ width += *fmt - _T('0');
+ }
+
+ // the default widths for the various fields
+ if ( !width )
+ {
+ switch ( *fmt )
+ {
+ case _T('Y'): // year has 4 digits
+ width = 4;
+ break;
+
+ case _T('j'): // day of year has 3 digits
+ case _T('l'): // milliseconds have 3 digits
+ width = 3;
+ break;
+
+ case _T('w'): // week day as number has only one
+ width = 1;
+ break;
+
+ default:
+ // default for all other fields
+ width = 2;
+ }
+ }
+
+ // then the format itself
+ switch ( *fmt )
{
case _T('a'): // a weekday name
case _T('A'):
break;
case _T('d'): // day of a month (01-31)
- if ( !GetNumericToken(input, &num) || (num > 31) )
+ if ( !GetNumericToken(width, input, &num) ||
+ (num > 31) || (num < 1) )
{
// no match
return (wxChar *)NULL;
break;
case _T('H'): // hour in 24h format (00-23)
- if ( !GetNumericToken(input, &num) || (num > 23) )
+ if ( !GetNumericToken(width, input, &num) || (num > 23) )
{
// no match
return (wxChar *)NULL;
break;
case _T('I'): // hour in 12h format (01-12)
- if ( !GetNumericToken(input, &num) || !num || (num > 12) )
+ if ( !GetNumericToken(width, input, &num) || !num || (num > 12) )
{
// no match
return (wxChar *)NULL;
haveHour = TRUE;
hourIsIn12hFormat = TRUE;
- hour = num % 12; // 12 should be 0
+ hour = (wxDateTime_t)(num % 12); // 12 should be 0
break;
case _T('j'): // day of the year
- if ( !GetNumericToken(input, &num) || !num || (num > 366) )
+ if ( !GetNumericToken(width, input, &num) || !num || (num > 366) )
{
// no match
return (wxChar *)NULL;
break;
case _T('m'): // month as a number (01-12)
- if ( !GetNumericToken(input, &num) || !num || (num > 12) )
+ if ( !GetNumericToken(width, input, &num) || !num || (num > 12) )
{
// no match
return (wxChar *)NULL;
break;
case _T('M'): // minute as a decimal number (00-59)
- if ( !GetNumericToken(input, &num) || (num > 59) )
+ if ( !GetNumericToken(width, input, &num) || (num > 59) )
{
// no match
return (wxChar *)NULL;
wxString am, pm, token = GetAlphaToken(input);
GetAmPmStrings(&am, &pm);
+ if (am.IsEmpty() && pm.IsEmpty())
+ return (wxChar *)NULL; // no am/pm strings defined
if ( token.CmpNoCase(pm) == 0 )
{
isPM = TRUE;
}
case _T('S'): // second as a decimal number (00-61)
- if ( !GetNumericToken(input, &num) || (num > 61) )
+ if ( !GetNumericToken(width, input, &num) || (num > 61) )
{
// no match
return (wxChar *)NULL;
break;
case _T('w'): // weekday as a number (0-6), Sunday = 0
- if ( !GetNumericToken(input, &num) || (wday > 6) )
+ if ( !GetNumericToken(width, input, &num) || (wday > 6) )
{
// no match
return (wxChar *)NULL;
case _T('x'): // locale default date representation
#ifdef HAVE_STRPTIME
- // try using strptime() - it may fail even if the input is
+ // 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)
+ // to our generic code anyhow
{
struct tm tm;
- const wxChar *result = strptime(input, "%x", &tm);
+
+ const wxChar *result = CallStrptime(input, "%x", &tm);
if ( result )
{
input = result;
{
// use strptime() to do it for us (FIXME !Unicode friendly)
struct tm tm;
- input = strptime(input, "%X", &tm);
+ input = CallStrptime(input, "%X", &tm);
if ( !input )
{
return (wxChar *)NULL;
break;
case _T('y'): // year without century (00-99)
- if ( !GetNumericToken(input, &num) || (num > 99) )
+ if ( !GetNumericToken(width, input, &num) || (num > 99) )
{
// no match
return (wxChar *)NULL;
}
haveYear = TRUE;
- year = 1900 + num;
+
+ // TODO should have an option for roll over date instead of
+ // hard coding it here
+ year = (num > 30 ? 1900 : 2000) + (wxDateTime_t)num;
break;
case _T('Y'): // year with century
- if ( !GetNumericToken(input, &num) )
+ if ( !GetNumericToken(width, input, &num) )
{
// no match
return (wxChar *)NULL;
// take this date as default
tmDef = dateDef.GetTm();
}
- else if ( m_time != 0 )
+ else if ( IsValid() )
{
// if this date is valid, don't change it
tmDef = GetTm();
Set(tm);
+ // finally check that the week day is consistent -- if we had it
+ if ( haveWDay && GetWeekDay() != wday )
+ {
+ wxLogDebug(_T("inconsistsnet week day in wxDateTime::ParseFormat()"));
+
+ return NULL;
+ }
+
return input;
}
{
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"));
+ // Set to current day and hour, so strings like '14:00' becomes today at
+ // 14, not some other random date
+ wxDateTime dtDate = wxDateTime::Today();
+ wxDateTime dtTime = wxDateTime::Today();
+
+ const wxChar* pchTime;
- return (wxChar *)NULL;
+ // Try to parse the beginning of the string as a date
+ const wxChar* pchDate = dtDate.ParseDate(date);
+
+ // We got a date in the beginning, see if there is a time specified after the date
+ if ( pchDate )
+ {
+ // Skip spaces, as the ParseTime() function fails on spaces
+ while ( wxIsspace(*pchDate) )
+ pchDate++;
+
+ pchTime = dtTime.ParseTime(pchDate);
+ }
+ else // no date in the beginning
+ {
+ // check and see if we have a time followed by a date
+ pchTime = dtTime.ParseTime(date);
+ if ( pchTime )
+ {
+ while ( wxIsspace(*pchTime) )
+ pchTime++;
+
+ pchDate = dtDate.ParseDate(pchTime);
+ }
+ }
+
+ // If we have a date specified, set our own data to the same date
+ if ( !pchDate || !pchTime )
+ return NULL;
+
+ Set(dtDate.GetDay(), dtDate.GetMonth(), dtDate.GetYear(),
+ dtTime.GetHour(), dtTime.GetMinute(), dtTime.GetSecond(),
+ dtTime.GetMillisecond());
+
+ // Return endpoint of scan
+ return pchDate > pchTime ? pchDate : pchTime;
}
const wxChar *wxDateTime::ParseDate(const wxChar *date)
while ( wxIsspace(*p) )
p++;
- wxString today = _T("today");
- size_t len = today.length();
- if ( wxString(p, len).CmpNoCase(today) == 0 )
+ // some special cases
+ static struct
+ {
+ const wxChar *str;
+ int dayDiffFromToday;
+ } literalDates[] =
+ {
+ { wxTRANSLATE("today"), 0 },
+ { wxTRANSLATE("yesterday"), -1 },
+ { wxTRANSLATE("tomorrow"), 1 },
+ };
+
+ for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ )
{
- // nothing can follow this, so stop here
- p += len;
+ wxString date = wxGetTranslation(literalDates[n].str);
+ size_t len = date.length();
+ if ( wxStrlen(p) >= len && (wxString(p, len).CmpNoCase(date) == 0) )
+ {
+ // nothing can follow this, so stop here
+ p += len;
- *this = Today();
+ int dayDiffFromToday = literalDates[n].dayDiffFromToday;
+ *this = Today();
+ if ( dayDiffFromToday )
+ {
+ *this += wxDateSpan::Days(dayDiffFromToday);
+ }
- return p;
+ return p;
+ }
}
+ // We try to guess what we have here: for each new (numeric) token, we
+ // determine if it can be a month, day or a year. Of course, there is an
+ // ambiguity as some numbers may be days as well as months, so we also
+ // have the ability to back track.
+
// what do we have?
bool haveDay = FALSE, // the months day?
haveWDay = FALSE, // the day of week?
int year = 0;
// tokenize the string
- wxStringTokenizer tok(p, _T(",/-\t "));
+ size_t nPosCur = 0;
+ static const wxChar *dateDelimiters = _T(".,/-\t\r\n ");
+ wxStringTokenizer tok(p, dateDelimiters);
while ( tok.HasMoreTokens() )
{
wxString token = tok.GetNextToken();
+ if ( !token )
+ continue;
// is it a number?
unsigned long val;
bool isDay = FALSE,
isMonth = FALSE,
- // only years are counted from 0
- isYear = (val == 0) || (val > 31);
- if ( !isYear )
+ isYear = FALSE;
+
+ if ( !haveMon && val > 0 && val <= 12 )
+ {
+ // assume it is month
+ isMonth = TRUE;
+ }
+ else // not the month
{
- // 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;
- }
+ // this can only be the year
+ isYear = TRUE;
}
- else // it may be day
+ else // may be either day or year
{
- isDay = TRUE;
+ wxDateTime_t maxDays = haveMon
+ ? GetNumOfDaysInMonth(haveYear ? year : Inv_Year, mon)
+ : 31;
- // check the range
- if ( haveMon )
+ // can it be day?
+ if ( (val == 0) || (val > (unsigned long)maxDays) )
{
- 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;
- }
- }
+ // no
+ isYear = TRUE;
+ }
+ else // yes, suppose it's the day
+ {
+ isDay = 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;
+ year = (wxDateTime_t)val;
}
- else if ( isMonth )
+ else if ( isDay )
{
- if ( haveMon )
- {
+ if ( haveDay )
break;
- }
- haveMon = TRUE;
+ haveDay = TRUE;
- mon = (wxDateTime::Month)val;
+ day = (wxDateTime_t)val;
}
- else
+ else if ( isMonth )
{
- 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;
+ haveMon = TRUE;
- day = val;
+ mon = (Month)(val - 1);
}
}
else // not a number
{
- mon = GetMonthFromName(token, Name_Full | Name_Abbr);
- if ( mon != Inv_Month )
+ // be careful not to overwrite the current mon value
+ Month mon2 = GetMonthFromName(token, Name_Full | Name_Abbr);
+ if ( mon2 != Inv_Month )
{
// it's a month
if ( haveMon )
{
- break;
+ // but we already have a month - maybe we guessed wrong?
+ if ( !haveDay )
+ {
+ // no need to check in month range as always < 12, but
+ // the days are counted from 1 unlike the months
+ day = (wxDateTime_t)mon + 1;
+ haveDay = TRUE;
+ }
+ else
+ {
+ // could possible be the year (doesn't the year come
+ // before the month in the japanese format?) (FIXME)
+ break;
+ }
}
+ mon = mon2;
+
haveMon = TRUE;
}
- else
+ else // not a valid month name
{
wday = GetWeekDayFromName(token, Name_Full | Name_Abbr);
if ( wday != Inv_WeekDay )
haveWDay = TRUE;
}
- else
+ else // not a valid weekday name
{
// try the ordinals
static const wxChar *ordinals[] =
wxTRANSLATE("nineteenth"),
wxTRANSLATE("twentieth"),
// that's enough - otherwise we'd have problems with
- // composite (or not) ordinals otherwise
+ // composite (or not) ordinals
};
size_t n;
haveDay = TRUE;
- day = n + 1;
+ day = (wxDateTime_t)(n + 1);
}
}
}
+
+ nPosCur = tok.GetPosition();
}
// either no more tokens or the scan was stopped by something we couldn't
// parse - in any case, see if we can construct a date from what we have
if ( !haveDay && !haveWDay )
{
- wxLogDebug(_T("no day, no weekday hence no date."));
+ wxLogDebug(_T("ParseDate: no day, no weekday hence no date."));
return (wxChar *)NULL;
}
if ( haveWDay && (haveMon || haveYear || haveDay) &&
- !(haveMon && haveMon && haveYear) )
+ !(haveDay && haveMon && haveYear) )
{
// without adjectives (which we don't support here) the week day only
// makes sense completely separately or with the full date
return (wxChar *)NULL;
}
+ if ( !haveWDay && haveYear && !(haveDay && haveMon) )
+ {
+ // may be we have month and day instead of day and year?
+ if ( haveDay && !haveMon )
+ {
+ if ( day <= 12 )
+ {
+ // exchange day and month
+ mon = (wxDateTime::Month)(day - 1);
+
+ // we're in the current year then
+ if ( (year > 0) && (year <= (int)GetNumOfDaysInMonth(Inv_Year, mon)) )
+ {
+ day = year;
+
+ haveMon = TRUE;
+ haveYear = FALSE;
+ }
+ //else: no, can't exchange, leave haveMon == FALSE
+ }
+ }
+
+ if ( !haveMon )
+ {
+ // if we give the year, month and day must be given too
+ wxLogDebug(_T("ParseDate: day and month should be specified if year is."));
+
+ return (wxChar *)NULL;
+ }
+ }
+
if ( !haveMon )
{
mon = GetCurrentMonth();
if ( GetWeekDay() != wday )
{
// inconsistency detected
+ wxLogDebug(_T("ParseDate: inconsistent day/weekday."));
+
return (wxChar *)NULL;
}
}
SetToWeekDayInSameWeek(wday);
}
- // return the pointer to the next char
- return p + wxStrlen(p) - wxStrlen(tok.GetString());
+ // return the pointer to the first unparsed char
+ p += nPosCur;
+ if ( nPosCur && wxStrchr(dateDelimiters, *(p - 1)) )
+ {
+ // if we couldn't parse the token after the delimiter, put back the
+ // delimiter as well
+ p--;
+ }
+
+ return p;
}
const wxChar *wxDateTime::ParseTime(const wxChar *time)
size_t len = timeString.length();
if ( timeString.CmpNoCase(wxString(time, len)) == 0 )
{
- Set(stdTimes[n].hour, 0, 0);
+ // casts required by DigitalMars
+ Set(stdTimes[n].hour, wxDateTime_t(0), wxDateTime_t(0));
return time + len;
}
}
- // try all time formats we may think about starting with the standard one
- const wxChar *result = ParseFormat(time, _T("%X"));
+ // try all time formats we may think about in the order from longest to
+ // shortest
+
+ // 12hour with AM/PM?
+ const wxChar *result = ParseFormat(time, _T("%I:%M:%S %p"));
+
if ( !result )
{
// normally, it's the same, but why not try it?
if ( !result )
{
- // 12hour with AM/PM?
- result = ParseFormat(time, _T("%I:%M:%S %p"));
+ // 12hour with AM/PM but without seconds?
+ result = ParseFormat(time, _T("%I:%M %p"));
}
if ( !result )
if ( !result )
{
- // 12hour with AM/PM but without seconds?
- result = ParseFormat(time, _T("%I:%M %p"));
+ // just the hour and AM/PM?
+ result = ParseFormat(time, _T("%I %p"));
}
if ( !result )
if ( !result )
{
- // just the hour and AM/PM?
- result = ParseFormat(time, _T("%I %p"));
+ // parse the standard format: normally it is one of the formats above
+ // but it may be set to something completely different by the user
+ result = ParseFormat(time, _T("%X"));
}
// TODO: parse timezones
return result;
}
+// ----------------------------------------------------------------------------
+// Workdays and holidays support
+// ----------------------------------------------------------------------------
+
+bool wxDateTime::IsWorkDay(Country WXUNUSED(country)) const
+{
+ return !wxDateTimeHolidayAuthority::IsHoliday(*this);
+}
+
// ============================================================================
// wxTimeSpan
// ============================================================================
+// this enum is only used in wxTimeSpan::Format() below but we can't declare
+// it locally to the method as it provokes an internal compiler error in egcs
+// 2.91.60 when building with -O2
+enum TimeSpanPart
+{
+ Part_Week,
+ Part_Day,
+ Part_Hour,
+ Part_Min,
+ Part_Sec,
+ Part_MSec
+};
+
// not all strftime(3) format specifiers make sense here because, for example,
// a time span doesn't have a year nor a timezone
//
wxCHECK_MSG( format, _T(""), _T("NULL format in wxTimeSpan::Format") );
wxString str;
- str.Alloc(strlen(format));
+ str.Alloc(wxStrlen(format));
+
+ // Suppose we have wxTimeSpan ts(1 /* hour */, 2 /* min */, 3 /* sec */)
+ //
+ // Then, of course, ts.Format("%H:%M:%S") must return "01:02:03", but the
+ // question is what should ts.Format("%S") do? The code here returns "3273"
+ // in this case (i.e. the total number of seconds, not just seconds % 60)
+ // because, for me, this call means "give me entire time interval in
+ // seconds" and not "give me the seconds part of the time interval"
+ //
+ // If we agree that it should behave like this, it is clear that the
+ // interpretation of each format specifier depends on the presence of the
+ // other format specs in the string: if there was "%H" before "%M", we
+ // should use GetMinutes() % 60, otherwise just GetMinutes() &c
+
+ // we remember the most important unit found so far
+ TimeSpanPart partBiggest = Part_MSec;
- for ( const wxChar *pch = format; pch; pch++ )
+ for ( const wxChar *pch = format; *pch; pch++ )
{
wxChar ch = *pch;
- if ( ch == '%' )
+ if ( ch == _T('%') )
{
- wxString tmp;
+ // the start of the format specification of the printf() below
+ wxString fmtPrefix = _T('%');
- ch = *pch++;
+ // the number
+ long n;
+
+ ch = *++pch; // get the format spec char
switch ( ch )
{
default:
wxFAIL_MSG( _T("invalid format character") );
// fall through
- case '%':
- // will get to str << ch below
- break;
+ case _T('%'):
+ str += ch;
- case 'D':
- tmp.Printf(_T("%d"), GetDays());
+ // skip the part below switch
+ continue;
+
+ case _T('D'):
+ n = GetDays();
+ if ( partBiggest < Part_Day )
+ {
+ n %= DAYS_PER_WEEK;
+ }
+ else
+ {
+ partBiggest = Part_Day;
+ }
break;
- case 'E':
- tmp.Printf(_T("%d"), GetWeeks());
+ case _T('E'):
+ partBiggest = Part_Week;
+ n = GetWeeks();
break;
- case 'H':
- tmp.Printf(_T("%02d"), GetHours());
+ case _T('H'):
+ n = GetHours();
+ if ( partBiggest < Part_Hour )
+ {
+ n %= HOURS_PER_DAY;
+ }
+ else
+ {
+ partBiggest = Part_Hour;
+ }
+
+ fmtPrefix += _T("02");
break;
- case 'l':
- tmp.Printf(_T("%03ld"), GetMilliseconds().ToLong());
+ case _T('l'):
+ n = GetMilliseconds().ToLong();
+ if ( partBiggest < Part_MSec )
+ {
+ n %= 1000;
+ }
+ //else: no need to reset partBiggest to Part_MSec, it is
+ // the least significant one anyhow
+
+ fmtPrefix += _T("03");
break;
- case 'M':
- tmp.Printf(_T("%02d"), GetMinutes());
+ case _T('M'):
+ n = GetMinutes();
+ if ( partBiggest < Part_Min )
+ {
+ n %= MIN_PER_HOUR;
+ }
+ else
+ {
+ partBiggest = Part_Min;
+ }
+
+ fmtPrefix += _T("02");
break;
- case 'S':
- tmp.Printf(_T("%02ld"), GetSeconds().ToLong());
+ case _T('S'):
+ n = GetSeconds().ToLong();
+ if ( partBiggest < Part_Sec )
+ {
+ n %= SEC_PER_MIN;
+ }
+ else
+ {
+ partBiggest = Part_Sec;
+ }
+
+ fmtPrefix += _T("02");
break;
}
- if ( !!tmp )
- {
- str += tmp;
+ str += wxString::Format(fmtPrefix + _T("ld"), n);
+ }
+ else
+ {
+ // normal character, just copy
+ str += ch;
+ }
+ }
- // skip str += ch below
- continue;
- }
+ return str;
+}
+
+// ============================================================================
+// wxDateTimeHolidayAuthority and related classes
+// ============================================================================
+
+#include "wx/arrimpl.cpp"
+
+WX_DEFINE_OBJARRAY(wxDateTimeArray);
+
+static int wxCMPFUNC_CONV
+wxDateTimeCompareFunc(wxDateTime **first, wxDateTime **second)
+{
+ wxDateTime dt1 = **first,
+ dt2 = **second;
+
+ return dt1 == dt2 ? 0 : dt1 < dt2 ? -1 : +1;
+}
+
+// ----------------------------------------------------------------------------
+// wxDateTimeHolidayAuthority
+// ----------------------------------------------------------------------------
+
+wxHolidayAuthoritiesArray wxDateTimeHolidayAuthority::ms_authorities;
+
+/* static */
+bool wxDateTimeHolidayAuthority::IsHoliday(const wxDateTime& dt)
+{
+ size_t count = ms_authorities.size();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ if ( ms_authorities[n]->DoIsHoliday(dt) )
+ {
+ return TRUE;
}
+ }
+
+ return FALSE;
+}
+
+/* static */
+size_t
+wxDateTimeHolidayAuthority::GetHolidaysInRange(const wxDateTime& dtStart,
+ const wxDateTime& dtEnd,
+ wxDateTimeArray& holidays)
+{
+ wxDateTimeArray hol;
+
+ holidays.Clear();
+
+ size_t count = ms_authorities.size();
+ for ( size_t nAuth = 0; nAuth < count; nAuth++ )
+ {
+ ms_authorities[nAuth]->DoGetHolidaysInRange(dtStart, dtEnd, hol);
- str += ch;
+ WX_APPEND_ARRAY(holidays, hol);
}
- return str;
+ holidays.Sort(wxDateTimeCompareFunc);
+
+ return holidays.size();
+}
+
+/* static */
+void wxDateTimeHolidayAuthority::ClearAllAuthorities()
+{
+ WX_CLEAR_ARRAY(ms_authorities);
+}
+
+/* static */
+void wxDateTimeHolidayAuthority::AddAuthority(wxDateTimeHolidayAuthority *auth)
+{
+ ms_authorities.push_back(auth);
+}
+
+wxDateTimeHolidayAuthority::~wxDateTimeHolidayAuthority()
+{
+ // nothing to do here
+}
+
+// ----------------------------------------------------------------------------
+// wxDateTimeWorkDays
+// ----------------------------------------------------------------------------
+
+bool wxDateTimeWorkDays::DoIsHoliday(const wxDateTime& dt) const
+{
+ wxDateTime::WeekDay wd = dt.GetWeekDay();
+
+ return (wd == wxDateTime::Sun) || (wd == wxDateTime::Sat);
}
+
+size_t wxDateTimeWorkDays::DoGetHolidaysInRange(const wxDateTime& dtStart,
+ const wxDateTime& dtEnd,
+ wxDateTimeArray& holidays) const
+{
+ if ( dtStart > dtEnd )
+ {
+ wxFAIL_MSG( _T("invalid date range in GetHolidaysInRange") );
+
+ return 0u;
+ }
+
+ holidays.Empty();
+
+ // instead of checking all days, start with the first Sat after dtStart and
+ // end with the last Sun before dtEnd
+ wxDateTime dtSatFirst = dtStart.GetNextWeekDay(wxDateTime::Sat),
+ dtSatLast = dtEnd.GetPrevWeekDay(wxDateTime::Sat),
+ dtSunFirst = dtStart.GetNextWeekDay(wxDateTime::Sun),
+ dtSunLast = dtEnd.GetPrevWeekDay(wxDateTime::Sun),
+ dt;
+
+ for ( dt = dtSatFirst; dt <= dtSatLast; dt += wxDateSpan::Week() )
+ {
+ holidays.Add(dt);
+ }
+
+ for ( dt = dtSunFirst; dt <= dtSunLast; dt += wxDateSpan::Week() )
+ {
+ holidays.Add(dt);
+ }
+
+ return holidays.GetCount();
+}
+
+#endif // wxUSE_DATETIME
projects / wxWidgets.git / blobdiff