///////////////////////////////////////////////////////////////////////////////
// Name: src/common/datetime.cpp
// Purpose: implementation of time/date related classes
+// (for formatting&parsing see datetimefmt.cpp)
// Author: Vadim Zeitlin
// Modified by:
// Created: 11.05.99
#include "wx/datetime.h"
-const long wxDateTime::TIME_T_FACTOR = 1000l;
+// ----------------------------------------------------------------------------
+// wxXTI
+// ----------------------------------------------------------------------------
#if wxUSE_EXTENDED_RTTI
#endif // wxUSE_EXTENDED_RTTI
-//
+
// ----------------------------------------------------------------------------
// conditional compilation
// ----------------------------------------------------------------------------
-#if defined(HAVE_STRPTIME) && defined(__GLIBC__) && \
- ((__GLIBC__ == 2) && (__GLIBC_MINOR__ == 0))
- // glibc 2.0.7 strptime() is broken - the following snippet causes it to
- // crash (instead of just failing):
- //
- // strncpy(buf, "Tue Dec 21 20:25:40 1999", 128);
- // strptime(buf, "%x", &tm);
- //
- // so don't use it
- #undef HAVE_STRPTIME
-#endif // broken strptime()
-
-#if defined(HAVE_STRPTIME) && defined(__DARWIN__) && defined(_MSL_USING_MW_C_HEADERS) && _MSL_USING_MW_C_HEADERS
- // configure detects strptime as linkable because it's in the OS X
- // System library but MSL headers don't declare it.
-
-// char *strptime(const char *, const char *, struct tm *);
- // However, we DON'T want to just provide it here because we would
- // crash and/or overwrite data when strptime from OS X tries
- // to fill in MW's struct tm which is two fields shorter (no TZ stuff)
- // So for now let's just say we don't have strptime
- #undef HAVE_STRPTIME
-#endif
-
#if defined(__MWERKS__) && wxUSE_UNICODE
#include <wtime.h>
#endif
#endif
#endif // !WX_TIMEZONE && !WX_GMTOFF_IN_TM
-// everyone has strftime except Win CE unless VC8 is used
-#if !defined(__WXWINCE__) || defined(__VISUALC8__)
- #define HAVE_STRFTIME
-#endif
-
// NB: VC8 safe time functions could/should be used for wxMSW as well probably
#if defined(__WXWINCE__) && defined(__VISUALC8__)
// (i.e. JDN(Jan 1, 1970) = 2440587.5)
static const long EPOCH_JDN = 2440587l;
-// used only in asserts
-#ifdef __WXDEBUG__
+// these values are only used in asserts so don't define them if asserts are
+// disabled to avoid warnings about unused static variables
+#if wxDEBUG_LEVEL
// the date of JDN -0.5 (as we don't work with fractional parts, this is the
// reference date for us) is Nov 24, 4714BC
static const int JDN_0_YEAR = -4713;
static const int JDN_0_MONTH = wxDateTime::Nov;
static const int JDN_0_DAY = 24;
-#endif // __WXDEBUG__
+#endif // wxDEBUG_LEVEL
// the constants used for JDN calculations
static const long JDN_OFFSET = 32046l;
{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335 }
};
+const long wxDateTime::TIME_T_FACTOR = 1000l;
+
// ----------------------------------------------------------------------------
// global data
// ----------------------------------------------------------------------------
// private functions
// ----------------------------------------------------------------------------
-// debugger helper: shows what the date really is
-#ifdef __WXDEBUG__
+// debugger helper: this function can be called from a debugger to show what
+// the date really is
extern const char *wxDumpDate(const wxDateTime* dt)
{
static char buf[128];
wxString fmt(dt->Format("%Y-%m-%d (%a) %H:%M:%S"));
- wxStrncpy(buf, fmt + " (" + dt->GetValue().ToString() + " ticks)",
+ wxStrlcpy(buf,
+ (fmt + " (" + dt->GetValue().ToString() + " ticks)").ToAscii(),
WXSIZEOF(buf));
return buf;
}
-#endif // Debug
// get the number of days in the given month of the given year
static inline
// returns the time zone in the C sense, i.e. the difference UTC - local
// (in seconds)
-static int GetTimeZone()
+// NOTE: not static because used by datetimefmt.cpp
+int GetTimeZone()
{
// set to true when the timezone is set
static bool s_timezoneSet = false;
- JDN_OFFSET;
}
-#ifdef HAVE_STRFTIME
+#ifdef wxHAS_STRFTIME
// this function is a wrapper around strftime(3) adding error checking
-static wxString CallStrftime(const wxString& format, const tm* tm)
+// NOTE: not static because used by datetimefmt.cpp
+wxString CallStrftime(const wxString& format, const tm* tm)
{
wxChar buf[4096];
// Create temp wxString here to work around mingw/cygwin bug 1046059
if ( !wxStrftime(buf, WXSIZEOF(buf), format, tm) )
{
- // buffer is too small?
+ // if the format is valid, buffer must be too small?
wxFAIL_MSG(_T("strftime() failed"));
+
+ buf[0] = '\0';
}
s = buf;
return s;
}
-#endif // HAVE_STRFTIME
-
-#ifdef HAVE_STRPTIME
-
-#if wxUSE_UNIX && !defined(HAVE_STRPTIME_DECL)
- // configure detected that we had strptime() but not its declaration,
- // provide it ourselves
- extern "C" char *strptime(const char *, const char *, struct tm *);
-#endif
-
-// Unicode-friendly strptime() wrapper
-static const wxStringCharType *
-CallStrptime(const wxStringCharType *input, const char *fmt, tm *tm)
-{
- // the problem here is that strptime() returns pointer into the string we
- // passed to it while we're really interested in the pointer into the
- // original, Unicode, string so we try to transform the pointer back
-#if wxUSE_UNICODE_WCHAR
- wxCharBuffer inputMB(wxConvertWX2MB(input));
-#else // ASCII
- const char * const inputMB = input;
-#endif // Unicode/Ascii
-
- const char *result = strptime(inputMB, fmt, tm);
- if ( !result )
- return NULL;
-
-#if wxUSE_UNICODE_WCHAR
- // FIXME: this is wrong in presence of surrogates &c
- return input + (result - inputMB.data());
-#else // ASCII
- return result;
-#endif // Unicode/Ascii
-}
-
-#endif // HAVE_STRPTIME
+#endif // wxHAS_STRFTIME
// if year and/or month have invalid values, replace them with the current ones
static void ReplaceDefaultYearMonthWithCurrent(int *year,
}
}
-// fll the struct tm with default values
-static void InitTm(struct tm& tm)
+// fill the struct tm with default values
+// NOTE: not static because used by datetimefmt.cpp
+void InitTm(struct tm& tm)
{
// struct tm may have etxra fields (undocumented and with unportable
// names) which, nevertheless, must be set to 0
tm.tm_isdst = -1; // auto determine
}
-// parsing helpers
-// ---------------
-
-// return the month if the string is a month name or Inv_Month otherwise
-static wxDateTime::Month GetMonthFromName(const wxString& name, int flags)
-{
- wxDateTime::Month mon;
- for ( mon = wxDateTime::Jan; mon < wxDateTime::Inv_Month; wxNextMonth(mon) )
- {
- // case-insensitive comparison either one of or with both abbreviated
- // and not versions
- if ( flags & wxDateTime::Name_Full )
- {
- if ( name.CmpNoCase(wxDateTime::
- GetMonthName(mon, wxDateTime::Name_Full)) == 0 )
- {
- break;
- }
- }
-
- if ( flags & wxDateTime::Name_Abbr )
- {
- if ( name.CmpNoCase(wxDateTime::
- GetMonthName(mon, wxDateTime::Name_Abbr)) == 0 )
- {
- break;
- }
- }
- }
-
- return mon;
-}
-
-// return the weekday if the string is a weekday name or Inv_WeekDay otherwise
-static wxDateTime::WeekDay GetWeekDayFromName(const wxString& name, int flags)
-{
- wxDateTime::WeekDay wd;
- for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
- {
- // case-insensitive comparison either one of or with both abbreviated
- // and not versions
- if ( flags & wxDateTime::Name_Full )
- {
- if ( name.CmpNoCase(wxDateTime::
- GetWeekDayName(wd, wxDateTime::Name_Full)) == 0 )
- {
- break;
- }
- }
-
- if ( flags & wxDateTime::Name_Abbr )
- {
- if ( name.CmpNoCase(wxDateTime::
- GetWeekDayName(wd, wxDateTime::Name_Abbr)) == 0 )
- {
- break;
- }
- }
- }
-
- return wd;
-}
-
-/* static */
-struct tm *wxDateTime::GetTmNow(struct tm *tmstruct)
-{
- time_t t = GetTimeNow();
- return wxLocaltime_r(&t, tmstruct);
-}
-
-// scans all digits (but no more than len) and returns the resulting number
-static bool GetNumericToken(size_t len,
- const wxStringCharType*& p,
- unsigned long *number)
-{
- size_t n = 1;
- wxString s;
- while ( wxIsdigit(*p) )
- {
- s += *p++;
-
- if ( len && ++n > len )
- break;
- }
-
- return !s.empty() && s.ToULong(number);
-}
-
-// scans all alphabetic characters and returns the resulting string
-static wxString GetAlphaToken(const wxStringCharType*& p)
-{
- wxString s;
- while ( wxIsalpha(*p) )
- {
- s += *p++;
- }
-
- return s;
-}
-
// ============================================================================
// implementation of wxDateTime
// ============================================================================
// static functions
// ----------------------------------------------------------------------------
+/* static */
+struct tm *wxDateTime::GetTmNow(struct tm *tmstruct)
+{
+ time_t t = GetTimeNow();
+ return wxLocaltime_r(&t, tmstruct);
+}
+
/* static */
bool wxDateTime::IsLeapYear(int year, wxDateTime::Calendar cal)
{
}
}
+namespace
+{
+
+// helper function used by GetEnglish/WeekDayName(): returns 0 if flags is
+// Name_Full and 1 if it is Name_Abbr or -1 if the flags is incorrect (and
+// asserts in this case)
+//
+// the return value of this function is used as an index into 2D array
+// containing full names in its first row and abbreviated ones in the 2nd one
+int NameArrayIndexFromFlag(wxDateTime::NameFlags flags)
+{
+ switch ( flags )
+ {
+ case wxDateTime::Name_Full:
+ return 0;
+
+ case wxDateTime::Name_Abbr:
+ return 1;
+
+ default:
+ wxFAIL_MSG( "unknown wxDateTime::NameFlags value" );
+ }
+
+ return -1;
+}
+
+} // anonymous namespace
+
+/* static */
+wxString wxDateTime::GetEnglishMonthName(Month month, NameFlags flags)
+{
+ wxCHECK_MSG( month != Inv_Month, wxEmptyString, "invalid month" );
+
+ static const char *monthNames[2][MONTHS_IN_YEAR] =
+ {
+ { "January", "February", "March", "April", "May", "June",
+ "July", "August", "September", "October", "November", "December" },
+ { "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+ "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }
+ };
+
+ const int idx = NameArrayIndexFromFlag(flags);
+ if ( idx == -1 )
+ return wxString();
+
+ return monthNames[idx][month];
+}
+
/* static */
wxString wxDateTime::GetMonthName(wxDateTime::Month month,
wxDateTime::NameFlags flags)
{
+#ifdef wxHAS_STRFTIME
wxCHECK_MSG( month != Inv_Month, wxEmptyString, _T("invalid month") );
-#ifdef HAVE_STRFTIME
+
// 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;
tm.tm_mon = month;
return CallStrftime(flags == Name_Abbr ? _T("%b") : _T("%B"), &tm);
-#else // !HAVE_STRFTIME
- wxString ret;
- switch(month)
+#else // !wxHAS_STRFTIME
+ return GetEnglishMonthName(month, flags);
+#endif // wxHAS_STRFTIME/!wxHAS_STRFTIME
+}
+
+/* static */
+wxString wxDateTime::GetEnglishWeekDayName(WeekDay wday, NameFlags flags)
+{
+ wxCHECK_MSG( wday != Inv_WeekDay, wxEmptyString, _T("invalid weekday") );
+
+ static const char *weekdayNames[2][DAYS_PER_400_YEARS] =
{
- case Jan:
- ret = (flags == Name_Abbr ? wxT("Jan"): wxT("January"));
- break;
- case Feb:
- ret = (flags == Name_Abbr ? wxT("Feb"): wxT("Febuary"));
- break;
- case Mar:
- ret = (flags == Name_Abbr ? wxT("Mar"): wxT("March"));
- break;
- case Apr:
- ret = (flags == Name_Abbr ? wxT("Apr"): wxT("April"));
- break;
- case May:
- ret = (flags == Name_Abbr ? wxT("May"): wxT("May"));
- break;
- case Jun:
- ret = (flags == Name_Abbr ? wxT("Jun"): wxT("June"));
- break;
- case Jul:
- ret = (flags == Name_Abbr ? wxT("Jul"): wxT("July"));
- break;
- case Aug:
- ret = (flags == Name_Abbr ? wxT("Aug"): wxT("August"));
- break;
- case Sep:
- ret = (flags == Name_Abbr ? wxT("Sep"): wxT("September"));
- break;
- case Oct:
- ret = (flags == Name_Abbr ? wxT("Oct"): wxT("October"));
- break;
- case Nov:
- ret = (flags == Name_Abbr ? wxT("Nov"): wxT("November"));
- break;
- case Dec:
- ret = (flags == Name_Abbr ? wxT("Dec"): wxT("December"));
- break;
- }
- return ret;
-#endif // HAVE_STRFTIME/!HAVE_STRFTIME
+ { "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday",
+ "Saturday" },
+ { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" },
+ };
+
+ const int idx = NameArrayIndexFromFlag(flags);
+ if ( idx == -1 )
+ return wxString();
+
+ return weekdayNames[idx][wday];
}
/* static */
wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday,
wxDateTime::NameFlags flags)
{
+#ifdef wxHAS_STRFTIME
wxCHECK_MSG( wday != Inv_WeekDay, wxEmptyString, _T("invalid weekday") );
-#ifdef HAVE_STRFTIME
+
// take some arbitrary Sunday (but notice that the day should be such that
// after adding wday to it below we still have a valid date, e.g. don't
// take 28 here!)
// ... and call strftime()
return CallStrftime(flags == Name_Abbr ? _T("%a") : _T("%A"), &tm);
-#else // !HAVE_STRFTIME
- wxString ret;
- switch(wday)
- {
- case Sun:
- ret = (flags == Name_Abbr ? wxT("Sun") : wxT("Sunday"));
- break;
- case Mon:
- ret = (flags == Name_Abbr ? wxT("Mon") : wxT("Monday"));
- break;
- case Tue:
- ret = (flags == Name_Abbr ? wxT("Tue") : wxT("Tuesday"));
- break;
- case Wed:
- ret = (flags == Name_Abbr ? wxT("Wed") : wxT("Wednesday"));
- break;
- case Thu:
- ret = (flags == Name_Abbr ? wxT("Thu") : wxT("Thursday"));
- break;
- case Fri:
- ret = (flags == Name_Abbr ? wxT("Fri") : wxT("Friday"));
- break;
- case Sat:
- ret = (flags == Name_Abbr ? wxT("Sat") : wxT("Saturday"));
- break;
- }
- return ret;
-#endif // HAVE_STRFTIME/!HAVE_STRFTIME
+#else // !wxHAS_STRFTIME
+ return GetEnglishWeekDayName(wday, flags);
+#endif // wxHAS_STRFTIME/!wxHAS_STRFTIME
}
/* static */
// assert, even though it is a perfectly legal use.
if ( am )
{
- if (wxStrftime(buffer, sizeof(buffer)/sizeof(wxChar), _T("%p"), &tm) > 0)
+ if (wxStrftime(buffer, WXSIZEOF(buffer), _T("%p"), &tm) > 0)
*am = wxString(buffer);
else
*am = wxString();
if ( pm )
{
tm.tm_hour = 13;
- if (wxStrftime(buffer, sizeof(buffer)/sizeof(wxChar), _T("%p"), &tm) > 0)
+ if (wxStrftime(buffer, WXSIZEOF(buffer), _T("%p"), &tm) > 0)
*pm = wxString(buffer);
else
*pm = wxString();
}
}
+
// ----------------------------------------------------------------------------
// Country stuff: date calculations depend on the country (DST, work days,
// ...), so we need to know which rules to follow.
wxFAIL_MSG( _T("no first Sunday in April?") );
}
}
+ else if ( year > 2006 )
+ // Energy Policy Act of 2005, Pub. L. no. 109-58, 119 Stat 594 (2005).
+ // Starting in 2007, daylight time begins in the United States on the
+ // second Sunday in March and ends on the first Sunday in November
+ {
+ if ( !dt.SetToWeekDay(Sun, 2, Mar, year) )
+ {
+ // weird...
+ wxFAIL_MSG( _T("no second Sunday in March?") );
+ }
+ }
else
{
if ( !dt.SetToWeekDay(Sun, 1, Apr, year) )
dt.Set(30, Sep, year);
break;
- default:
- // DST ends at 2 a.m. on the last Sunday of October
- if ( !dt.SetToLastWeekDay(Sun, Oct, year) )
+ default: // default for switch (year)
+ if ( year > 2006 )
+ // Energy Policy Act of 2005, Pub. L. no. 109-58, 119 Stat 594 (2005).
+ // Starting in 2007, daylight time begins in the United States on the
+ // second Sunday in March and ends on the first Sunday in November
+ {
+ if ( !dt.SetToWeekDay(Sun, 1, Nov, year) )
+ {
+ // weird...
+ wxFAIL_MSG( _T("no first Sunday in November?") );
+ }
+ }
+ else
+ // pre-2007
+ // DST ends at 2 a.m. on the last Sunday of October
{
- // weirder and weirder...
- wxFAIL_MSG( _T("no last Sunday in October?") );
+ if ( !dt.SetToLastWeekDay(Sun, Oct, year) )
+ {
+ // weirder and weirder...
+ wxFAIL_MSG( _T("no last Sunday in October?") );
+ }
}
dt += wxTimeSpan::Hours(2);
- // TODO what about timezone??
+ // TODO: what about timezone??
}
break;
- default:
+ default: // default for switch (country)
// assume October 26th as the end of the DST - totally bogus too
dt.Set(26, Oct, year);
}
return Subtract(wxTimeSpan::Seconds(secDiff));
}
-// ----------------------------------------------------------------------------
-// wxDateTime to/from text representations
-// ----------------------------------------------------------------------------
-
-wxString wxDateTime::Format(const wxString& format, const TimeZone& tz) const
-{
- wxCHECK_MSG( !format.empty(), wxEmptyString,
- _T("NULL format in wxDateTime::Format") );
-
- // we have to use our own implementation if the date is out of range of
- // strftime() or if we use non standard specificators
-#ifdef HAVE_STRFTIME
- time_t time = GetTicks();
-
- if ( (time != (time_t)-1) && !wxStrstr(format, _T("%l")) )
- {
- // use strftime()
- struct tm tmstruct;
- struct tm *tm;
- if ( tz.GetOffset() == -GetTimeZone() )
- {
- // we are working with local time
- tm = wxLocaltime_r(&time, &tmstruct);
-
- // should never happen
- wxCHECK_MSG( tm, wxEmptyString, _T("wxLocaltime_r() failed") );
- }
- else
- {
- time += (int)tz.GetOffset();
-
-#if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning
- int time2 = (int) time;
- if ( time2 >= 0 )
-#else
- if ( time >= 0 )
-#endif
- {
- tm = wxGmtime_r(&time, &tmstruct);
-
- // should never happen
- wxCHECK_MSG( tm, wxEmptyString, _T("wxGmtime_r() failed") );
- }
- else
- {
- tm = (struct tm *)NULL;
- }
- }
-
- if ( tm )
- {
- return CallStrftime(format, tm);
- }
- }
- //else: use generic code below
-#endif // HAVE_STRFTIME
-
- // we only parse ANSI C format specifications here, no POSIX 2
- // 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
- 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 ( wxString::const_iterator p = format.begin(); p != format.end(); ++p )
- {
- if ( *p != _T('%') )
- {
- // copy as is
- res += *p;
-
- continue;
- }
-
- // set the default format
- switch ( (*++p).GetValue() )
- {
- case _T('Y'): // year has 4 digits
- fmt = _T("%04d");
- 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
- // field width preceding the format in which case it will
- // override the default format anyhow
- fmt = _T("%02d");
- }
-
- bool restart = true;
- while ( restart )
- {
- restart = false;
-
- // start of the format specification
- switch ( (*p).GetValue() )
- {
- 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
-#ifdef HAVE_STRFTIME
- //
- // 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 occurrences of YEAR in it with some unique
- // string not appearing anywhere else in it, then use
- // strftime() to format the date in year YEAR and then replace
- // YEAR back by the real year and the unique replacement
- // string back with YEAR. Notice that "all occurrences of YEAR"
- // means all occurrences of 4 digit as well as 2 digit form!
- //
- // the bugs: we assume that neither of %c nor %x contains any
- // fields which may change between the YEAR and real year. For
- // 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 of the
- // year X + 28 is the same weekday as Jan 1 of X (because
- // the weekday advances by 1 for each normal X and by 2
- // for each leap X, hence by 5 every 4 years or by 35
- // 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;
- }
-
- // finally move the year below 2000 so that the 2-digit
- // year number can never match the month or day of the
- // month when we do the replacements below
- if ( year >= 2000 )
- year -= 28;
-
- wxASSERT_MSG( year >= 1970 && year < 2000,
- _T("logic error in wxDateTime::Format") );
-
-
- // 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 replacement year with the real year:
- // notice that we have to replace the 4 digit year with
- // a unique string not appearing in strftime() output
- // first to prevent the 2 digit year from matching any
- // substring of the 4 digit year (but any day, month,
- // hours or minutes components should be safe because
- // they are never in 70-99 range)
- wxString replacement("|");
- while ( str.find(replacement) != wxString::npos )
- replacement += '|';
-
- str.Replace(wxString::Format("%d", year),
- replacement);
- str.Replace(wxString::Format("%d", year % 100),
- wxString::Format("%d", yearReal % 100));
- str.Replace(replacement,
- wxString::Format("%d", yearReal));
-
- res += str;
- }
-#else // !HAVE_STRFTIME
- // Use "%m/%d/%y %H:%M:%S" format instead
- res += wxString::Format(wxT("%02d/%02d/%04d %02d:%02d:%02d"),
- tm.mon+1,tm.mday, tm.year, tm.hour, tm.min, tm.sec);
-#endif // HAVE_STRFTIME/!HAVE_STRFTIME
- 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('l'): // milliseconds (NOT STANDARD)
- res += wxString::Format(fmt, GetMillisecond(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
-#ifdef HAVE_STRFTIME
- res += CallStrftime(_T("%p"), &tmTimeOnly);
-#else // !HAVE_STRFTIME
- res += (tmTimeOnly.tm_hour > 12) ? wxT("pm") : wxT("am");
-#endif // HAVE_STRFTIME/!HAVE_STRFTIME
- 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
-#ifdef HAVE_STRFTIME
- res += CallStrftime(_T("%X"), &tmTimeOnly);
-#else // !HAVE_STRFTIME
- res += wxString::Format(wxT("%02d:%02d:%02d"),tm.hour, tm.min, tm.sec);
-#endif // HAVE_STRFTIME/!HAVE_STRFTIME
- 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
-#ifdef HAVE_STRFTIME
- res += CallStrftime(_T("%Z"), &tmTimeOnly);
-#endif
- break;
-
- default:
- // is it the format width?
- fmt.Empty();
- while ( *p == _T('-') || *p == _T('+') ||
- *p == _T(' ') || wxIsdigit(*p) )
- {
- fmt += *p;
- }
-
- if ( !fmt.empty() )
- {
- // we've only got the flags and width so far in fmt
- fmt.Prepend(_T('%'));
- fmt.Append(_T('d'));
-
- restart = true;
-
- break;
- }
-
- // 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 char *
-wxDateTime::ParseRfc822Date(const wxString& date, wxString::const_iterator *end)
-{
- // TODO: rewrite using iterators instead of wxChar pointers
- const wxStringCharType *p = date.wx_str();
- const wxStringCharType *comma = wxStrchr(p, wxS(','));
- 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 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 NULL;
- }
-
- wxDateTime_t day = (wxDateTime_t)(*p++ - _T('0'));
- if ( wxIsdigit(*p) )
- {
- day *= 10;
- day = (wxDateTime_t)(day + (*p++ - _T('0')));
- }
-
- if ( *p++ != _T(' ') )
- {
- return 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 NULL;
- }
-
- p += 3;
-
- if ( *p++ != _T(' ') )
- {
- return NULL;
- }
-
- // next is the year
- if ( !wxIsdigit(*p) )
- {
- // no year?
- return NULL;
- }
-
- int year = *p++ - _T('0');
-
- if ( !wxIsdigit(*p) )
- {
- // should have at least 2 digits in the year
- return 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 NULL;
- }
-
- year *= 10;
- year += *p++ - _T('0');
- }
-
- if ( *p++ != _T(' ') )
- {
- return NULL;
- }
-
- // time is in the format hh:mm:ss and seconds are optional
- if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
-
- wxDateTime_t hour = (wxDateTime_t)(*p++ - _T('0'));
-
- if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
-
- hour *= 10;
- hour = (wxDateTime_t)(hour + (*p++ - _T('0')));
-
- if ( *p++ != _T(':') )
- {
- return NULL;
- }
-
- if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
-
- wxDateTime_t min = (wxDateTime_t)(*p++ - _T('0'));
-
- if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
-
- min *= 10;
- min = (wxDateTime_t)(min + *p++ - _T('0'));
-
- wxDateTime_t sec = 0;
- if ( *p++ == _T(':') )
- {
- if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
-
- sec = (wxDateTime_t)(*p++ - _T('0'));
-
- if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
-
- sec *= 10;
- sec = (wxDateTime_t)(sec + *p++ - _T('0'));
- }
-
- if ( *p++ != _T(' ') )
- {
- return NULL;
- }
-
- // and now the interesting part: the timezone
- int offset wxDUMMY_INITIALIZE(0);
- 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 NULL;
- }
-
- // hours
- offset = MIN_PER_HOUR*(10*(*p - _T('0')) + (*(p + 1) - _T('0')));
-
- p += 2;
-
- if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) )
- {
- return 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 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 NULL;
- }
-
- p += tz.length();
- }
-
- // make it minutes
- offset *= MIN_PER_HOUR;
- }
-
- // the spec was correct, construct the date from the values we found
- Set(day, mon, year, hour, min, sec);
- MakeFromTimezone(TimeZone::Make(offset*SEC_PER_MIN));
-
- const size_t endpos = p - date.wx_str();
- if ( end )
- *end = date.begin() + endpos;
-
- return date.c_str() + endpos;
-}
-
-#ifdef __WINDOWS__
-
-// returns the string containing strftime() format used for short dates in the
-// current locale or an empty string
-static wxString GetLocaleDateFormat()
-{
- wxString fmtWX;
-
- // there is no setlocale() under Windows CE, so just always query the
- // system there
-#ifndef __WXWINCE__
- if ( strcmp(setlocale(LC_ALL, NULL), "C") != 0 )
-#endif
- {
- // The locale was programatically set to non-C. We assume that this was
- // done using wxLocale, in which case thread's current locale is also
- // set to correct LCID value and we can use GetLocaleInfo to determine
- // the correct formatting string:
-#ifdef __WXWINCE__
- LCID lcid = LOCALE_USER_DEFAULT;
-#else
- LCID lcid = GetThreadLocale();
-#endif
- // according to MSDN 80 chars is max allowed for short date format
- wxChar fmt[81];
- if ( ::GetLocaleInfo(lcid, LOCALE_SSHORTDATE, fmt, WXSIZEOF(fmt)) )
- {
- wxChar chLast = _T('\0');
- size_t lastCount = 0;
- for ( const wxChar *p = fmt; /* NUL handled inside */; p++ )
- {
- if ( *p == chLast )
- {
- lastCount++;
- continue;
- }
-
- switch ( *p )
- {
- // these characters come in groups, start counting them
- case _T('d'):
- case _T('M'):
- case _T('y'):
- case _T('g'):
- chLast = *p;
- lastCount = 1;
- break;
-
- default:
- // first deal with any special characters we have had
- if ( lastCount )
- {
- switch ( chLast )
- {
- case _T('d'):
- switch ( lastCount )
- {
- case 1: // d
- case 2: // dd
- // these two are the same as we
- // don't distinguish between 1 and
- // 2 digits for days
- fmtWX += _T("%d");
- break;
-
- case 3: // ddd
- fmtWX += _T("%a");
- break;
-
- case 4: // dddd
- fmtWX += _T("%A");
- break;
-
- default:
- wxFAIL_MSG( _T("too many 'd's") );
- }
- break;
-
- case _T('M'):
- switch ( lastCount )
- {
- case 1: // M
- case 2: // MM
- // as for 'd' and 'dd' above
- fmtWX += _T("%m");
- break;
-
- case 3:
- fmtWX += _T("%b");
- break;
-
- case 4:
- fmtWX += _T("%B");
- break;
-
- default:
- wxFAIL_MSG( _T("too many 'M's") );
- }
- break;
-
- case _T('y'):
- switch ( lastCount )
- {
- case 1: // y
- case 2: // yy
- fmtWX += _T("%y");
- break;
-
- case 4: // yyyy
- fmtWX += _T("%Y");
- break;
-
- default:
- wxFAIL_MSG( _T("wrong number of 'y's") );
- }
- break;
-
- case _T('g'):
- // strftime() doesn't have era string,
- // ignore this format
- wxASSERT_MSG( lastCount <= 2,
- _T("too many 'g's") );
- break;
-
- default:
- wxFAIL_MSG( _T("unreachable") );
- }
-
- chLast = _T('\0');
- lastCount = 0;
- }
-
- // not a special character so must be just a separator,
- // treat as is
- if ( *p != _T('\0') )
- {
- if ( *p == _T('%') )
- {
- // this one needs to be escaped
- fmtWX += _T('%');
- }
-
- fmtWX += *p;
- }
- }
-
- if ( *p == _T('\0') )
- break;
- }
- }
- //else: GetLocaleInfo() failed, leave fmtDate value unchanged and
- // try our luck with the default formats
- }
- //else: default C locale, default formats should work
-
- return fmtWX;
-}
-
-#endif // __WINDOWS__
-
-const char *
-wxDateTime::ParseFormat(const wxString& date,
- const wxString& format,
- const wxDateTime& dateDef,
- wxString::const_iterator *end)
-{
- wxCHECK_MSG( !format.empty(), NULL, "format can't be empty" );
-
- 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 wxStringCharType *input = date.wx_str();
- for ( wxString::const_iterator fmt = format.begin(); fmt != format.end(); ++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 NULL;
- }
- }
-
- // done with this format char
- continue;
- }
-
- // start of a format specification
-
- // 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).GetValue() )
- {
- 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).GetValue() )
- {
- 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 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 NULL;
- }
- }
- haveMon = true;
- break;
-
- case _T('c'): // locale default date and time representation
- {
- wxDateTime dt;
-
- const wxString inc(input);
-
- // try the format which corresponds to ctime() output first
- wxString::const_iterator endc;
- if ( !dt.ParseFormat(inc, wxS("%a %b %d %H:%M:%S %Y"), &endc) &&
- !dt.ParseFormat(inc, wxS("%x %X"), &endc) &&
- !dt.ParseFormat(inc, wxS("%X %x"), &endc) )
- {
- // we've tried everything and still no match
- return 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 += endc - inc.begin();
- }
- break;
-
- case _T('d'): // day of a month (01-31)
- if ( !GetNumericToken(width, input, &num) ||
- (num > 31) || (num < 1) )
- {
- // no match
- return 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(width, input, &num) || (num > 23) )
- {
- // no match
- return NULL;
- }
-
- haveHour = true;
- hour = (wxDateTime_t)num;
- break;
-
- case _T('I'): // hour in 12h format (01-12)
- if ( !GetNumericToken(width, input, &num) || !num || (num > 12) )
- {
- // no match
- return NULL;
- }
-
- haveHour = true;
- hourIsIn12hFormat = true;
- hour = (wxDateTime_t)(num % 12); // 12 should be 0
- break;
-
- case _T('j'): // day of the year
- if ( !GetNumericToken(width, input, &num) || !num || (num > 366) )
- {
- // no match
- return NULL;
- }
-
- haveYDay = true;
- yday = (wxDateTime_t)num;
- break;
-
- case _T('m'): // month as a number (01-12)
- if ( !GetNumericToken(width, input, &num) || !num || (num > 12) )
- {
- // no match
- return NULL;
- }
-
- haveMon = true;
- mon = (Month)(num - 1);
- break;
-
- case _T('M'): // minute as a decimal number (00-59)
- if ( !GetNumericToken(width, input, &num) || (num > 59) )
- {
- // no match
- return 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 (am.empty() && pm.empty())
- return NULL; // no am/pm strings defined
- if ( token.CmpNoCase(pm) == 0 )
- {
- isPM = true;
- }
- else if ( token.CmpNoCase(am) != 0 )
- {
- // no match
- return NULL;
- }
- }
- break;
-
- case _T('r'): // time as %I:%M:%S %p
- {
- wxDateTime dt;
- input = dt.ParseFormat(input, wxS("%I:%M:%S %p"));
- if ( !input )
- {
- // no match
- return 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, wxS("%H:%M"));
- if ( !input )
- {
- // no match
- return NULL;
- }
-
- haveHour = haveMin = true;
-
- Tm tm = dt.GetTm();
- hour = tm.hour;
- min = tm.min;
- }
- break;
-
- case _T('S'): // second as a decimal number (00-61)
- if ( !GetNumericToken(width, input, &num) || (num > 61) )
- {
- // no match
- return 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 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(width, input, &num) || (wday > 6) )
- {
- // no match
- return 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
- {
- struct tm tm;
-
- const wxStringCharType *
- result = CallStrptime(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
-
- {
- wxDateTime dt;
- wxString fmtDate,
- fmtDateAlt;
-
-#ifdef __WINDOWS__
- // The above doesn't work for all locales, try to query
- // Windows for the right way of formatting the date:
- fmtDate = GetLocaleDateFormat();
- if ( fmtDate.empty() )
-#endif // __WINDOWS__
- {
- 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 wxString indate(input);
- wxString::const_iterator endDate;
- if ( !dt.ParseFormat(indate, fmtDate, &endDate) )
- {
- // try another one if we have it
- if ( fmtDateAlt.empty() ||
- !dt.ParseFormat(indate, fmtDateAlt, &endDate) )
- {
- return NULL;
- }
- }
-
- Tm tm = dt.GetTm();
-
- haveDay =
- haveMon =
- haveYear = true;
-
- year = tm.year;
- mon = tm.mon;
- mday = tm.mday;
-
- input += endDate - indate.begin();
- }
-
- 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 = CallStrptime(input, "%X", &tm);
- if ( !input )
- {
- return 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 wxStringCharType *
- result = dt.ParseFormat(input, wxS("%T"));
- if ( !result )
- {
- result = dt.ParseFormat(input, wxS("%r"));
- }
-
- if ( !result )
- {
- // no match
- return 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(width, input, &num) || (num > 99) )
- {
- // no match
- return NULL;
- }
-
- haveYear = true;
-
- // 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(width, input, &num) )
- {
- // no match
- return 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 NULL;
- }
- break;
-
- case 0: // the end of string
- wxFAIL_MSG(_T("unexpected format end"));
-
- // fall through
-
- default: // not a known format spec
- return 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 ( IsValid() )
- {
- // 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 NULL;
- }
-
- tm.mon = mon;
- tm.mday = mday;
- }
- else if ( haveYDay )
- {
- if ( yday > GetNumberOfDays(tm.year) )
- {
- wxLogDebug(_T("bad year day in wxDateTime::ParseFormat"));
-
- return 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);
-
- // 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;
- }
-
- const size_t endpos = input - date.wx_str();
- if ( end )
- *end = date.begin() + endpos;
-
- return date.c_str() + endpos;
-}
-
-const char *
-wxDateTime::ParseDateTime(const wxString& date, wxString::const_iterator *end)
-{
- // 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();
-
- wxString::const_iterator
- endTime,
- endDate,
- endBoth;
-
- // If we got a date in the beginning, see if there is a time specified
- // after the date
- if ( dtDate.ParseDate(date, &endDate) )
- {
- // Skip spaces, as the ParseTime() function fails on spaces
- while ( endDate != date.end() && wxIsspace(*endDate) )
- ++endDate;
-
- const wxString timestr(endDate, date.end());
- if ( !dtTime.ParseTime(timestr, &endTime) )
- return NULL;
-
- endBoth = endDate + (endTime - timestr.begin());
- }
- else // no date in the beginning
- {
- // check if we have a time followed by a date
- if ( !dtTime.ParseTime(date, &endTime) )
- return NULL;
-
- while ( endTime != date.end() && wxIsspace(*endTime) )
- ++endTime;
-
- const wxString datestr(endTime, date.end());
- if ( !dtDate.ParseDate(datestr, &endDate) )
- return NULL;
-
- endBoth = endTime + (endDate - datestr.begin());
- }
-
- Set(dtDate.GetDay(), dtDate.GetMonth(), dtDate.GetYear(),
- dtTime.GetHour(), dtTime.GetMinute(), dtTime.GetSecond(),
- dtTime.GetMillisecond());
-
- // Return endpoint of scan
- if ( end )
- *end = endBoth;
-
- return date.c_str() + (endBoth - date.begin());
-}
-
-const char *
-wxDateTime::ParseDate(const wxString& date, wxString::const_iterator *end)
-{
- // 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)
-
- const wxStringCharType *p = date.wx_str();
- while ( wxIsspace(*p) )
- p++;
-
- // some special cases
- static struct
- {
- const char *str;
- int dayDiffFromToday;
- } literalDates[] =
- {
- { wxTRANSLATE("today"), 0 },
- { wxTRANSLATE("yesterday"), -1 },
- { wxTRANSLATE("tomorrow"), 1 },
- };
-
- for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ )
- {
- const wxString dateStr = wxGetTranslation(literalDates[n].str);
- size_t len = dateStr.length();
- if ( wxStrlen(p) >= len )
- {
- wxString str(p, len);
- if ( str.CmpNoCase(dateStr) == 0 )
- {
- // nothing can follow this, so stop here
- p += len;
-
- int dayDiffFromToday = literalDates[n].dayDiffFromToday;
- *this = Today();
- if ( dayDiffFromToday )
- {
- *this += wxDateSpan::Days(dayDiffFromToday);
- }
-
- const size_t endpos = p - date.wx_str();
-
- if ( end )
- *end = date.begin() + endpos;
- return date.c_str() + endpos;
- }
- }
- }
-
- // 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?
- 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
- size_t nPosCur = 0;
- static const wxStringCharType *dateDelimiters = wxS(".,/-\t\r\n ");
- wxStringTokenizer tok(p, dateDelimiters);
- while ( tok.HasMoreTokens() )
- {
- wxString token = tok.GetNextToken();
- if ( !token )
- continue;
-
- // is it a number?
- unsigned long val;
- if ( token.ToULong(&val) )
- {
- // guess what this number is
-
- bool isDay = false,
- isMonth = false,
- isYear = false;
-
- if ( !haveMon && val > 0 && val <= 12 )
- {
- // assume it is month
- isMonth = true;
- }
- else // not the month
- {
- if ( haveDay )
- {
- // this can only be the year
- isYear = true;
- }
- else // may be either day or year
- {
- // use a leap year if we don't have the year yet to allow
- // dates like 2/29/1976 which would be rejected otherwise
- wxDateTime_t max_days = (wxDateTime_t)(
- haveMon
- ? GetNumOfDaysInMonth(haveYear ? year : 1976, mon)
- : 31
- );
-
- // can it be day?
- if ( (val == 0) || (val > (unsigned long)max_days) )
- {
- // no
- isYear = true;
- }
- else // yes, suppose it's the day
- {
- isDay = true;
- }
- }
- }
-
- if ( isYear )
- {
- if ( haveYear )
- break;
-
- haveYear = true;
-
- year = (wxDateTime_t)val;
- }
- else if ( isDay )
- {
- if ( haveDay )
- break;
-
- haveDay = true;
-
- day = (wxDateTime_t)val;
- }
- else if ( isMonth )
- {
- haveMon = true;
-
- mon = (Month)(val - 1);
- }
- }
- else // not a number
- {
- // 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 )
- {
- // 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 // not a valid month name
- {
- WeekDay wday2 = GetWeekDayFromName(token, Name_Full | Name_Abbr);
- if ( wday2 != Inv_WeekDay )
- {
- // a week day
- if ( haveWDay )
- {
- break;
- }
-
- wday = wday2;
-
- haveWDay = true;
- }
- else // not a valid weekday name
- {
- // try the ordinals
- static const char *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
- };
-
- 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 = (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("ParseDate: no day, no weekday hence no date."));
-
- return NULL;
- }
-
- if ( haveWDay && (haveMon || haveYear || haveDay) &&
- !(haveDay && 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 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 = (wxDateTime_t)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 NULL;
- }
- }
-
- if ( !haveMon )
- {
- mon = GetCurrentMonth();
- }
-
- if ( !haveYear )
- {
- year = GetCurrentYear();
- }
-
- if ( haveDay )
- {
- // normally we check the day above but the check is optimistic in case
- // we find the day before its month/year so we have to redo it now
- if ( day > GetNumOfDaysInMonth(year, mon) )
- return NULL;
-
- Set(day, mon, year);
-
- if ( haveWDay )
- {
- // check that it is really the same
- if ( GetWeekDay() != wday )
- {
- // inconsistency detected
- wxLogDebug(_T("ParseDate: inconsistent day/weekday."));
-
- return NULL;
- }
- }
- }
- else // haveWDay
- {
- *this = Today();
-
- SetToWeekDayInSameWeek(wday);
- }
-
- // 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--;
- }
-
- const size_t endpos = p - date.wx_str();
- if ( end )
- *end = date.begin() + endpos;
-
- return date.c_str() + endpos;
-}
-
-const char *
-wxDateTime::ParseTime(const wxString& time, wxString::const_iterator *end)
-{
- // first try some extra things
- static const struct
- {
- const char *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 )
- {
- // casts required by DigitalMars
- Set(stdTimes[n].hour, wxDateTime_t(0), wxDateTime_t(0));
-
- if ( end )
- *end = time.begin() + len;
-
- return time.c_str() + len;
- }
- }
-
- // try all time formats we may think about in the order from longest to
- // shortest
- static const char *timeFormats[] =
- {
- "%I:%M:%S %p", // 12hour with AM/PM
- "%H:%M:%S", // could be the same or 24 hour one so try it too
- "%I:%M %p", // 12hour with AM/PM but without seconds
- "%H:%M:%S", // and a possibly 24 hour version without seconds
- "%X", // possibly something from above or maybe something
- // completely different -- try it last
-
- // TODO: parse timezones
- };
-
- for ( size_t nFmt = 0; nFmt < WXSIZEOF(timeFormats); nFmt++ )
- {
- const char *result = ParseFormat(time, timeFormats[nFmt], end);
- if ( result )
- return result;
- }
-
- return NULL;
-}
-
-// ----------------------------------------------------------------------------
-// Workdays and holidays support
-// ----------------------------------------------------------------------------
-
-bool wxDateTime::IsWorkDay(Country WXUNUSED(country)) const
-{
- return !wxDateTimeHolidayAuthority::IsHoliday(*this);
-}
-
-// ============================================================================
-// wxDateSpan
-// ============================================================================
-
-wxDateSpan WXDLLIMPEXP_BASE operator*(int n, const wxDateSpan& ds)
-{
- wxDateSpan ds1(ds);
- return ds1.Multiply(n);
-}
-
-// ============================================================================
-// wxTimeSpan
-// ============================================================================
-
-wxTimeSpan WXDLLIMPEXP_BASE operator*(int n, const wxTimeSpan& ts)
-{
- return wxTimeSpan(ts).Multiply(n);
-}
-
-// 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
-//
-// Here are the ones which are supported (all of them are supported by strftime
-// as well):
-// %H hour in 24 hour format
-// %M minute (00 - 59)
-// %S second (00 - 59)
-// %% percent sign
-//
-// Also, for MFC CTimeSpan compatibility, we support
-// %D number of days
-//
-// And, to be better than MFC :-), we also have
-// %E number of wEeks
-// %l milliseconds (000 - 999)
-wxString wxTimeSpan::Format(const wxString& format) const
-{
- wxCHECK_MSG( !format.empty(), wxEmptyString,
- _T("NULL format in wxTimeSpan::Format") );
-
- wxString str;
- str.Alloc(format.length());
-
- // 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 ( wxString::const_iterator pch = format.begin(); pch != format.end(); ++pch )
- {
- wxChar ch = *pch;
-
- if ( ch == _T('%') )
- {
- // the start of the format specification of the printf() below
- wxString fmtPrefix(_T('%'));
-
- // the number
- long n;
-
- // the number of digits for the format string, 0 if unused
- unsigned digits = 0;
-
- ch = *++pch; // get the format spec char
- switch ( ch )
- {
- default:
- wxFAIL_MSG( _T("invalid format character") );
- // fall through
-
- case _T('%'):
- str += ch;
-
- // 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 _T('E'):
- partBiggest = Part_Week;
- n = GetWeeks();
- break;
-
- case _T('H'):
- n = GetHours();
- if ( partBiggest < Part_Hour )
- {
- if ( n < 0 )
- {
- // the sign has already been taken into account
- // when outputting the biggest part
- n = -n;
- }
-
- n %= HOURS_PER_DAY;
- }
- else
- {
- partBiggest = Part_Hour;
- }
-
- digits = 2;
- break;
-
- case _T('l'):
- n = GetMilliseconds().ToLong();
- if ( partBiggest < Part_MSec )
- {
- if ( n < 0 )
- n = -n;
-
- n %= 1000;
- }
- //else: no need to reset partBiggest to Part_MSec, it is
- // the least significant one anyhow
-
- digits = 3;
- break;
-
- case _T('M'):
- n = GetMinutes();
- if ( partBiggest < Part_Min )
- {
- if ( n < 0 )
- n = -n;
-
- n %= MIN_PER_HOUR;
- }
- else
- {
- partBiggest = Part_Min;
- }
-
- digits = 2;
- break;
-
- case _T('S'):
- n = GetSeconds().ToLong();
- if ( partBiggest < Part_Sec )
- {
- if ( n < 0 )
- n = -n;
-
- n %= SEC_PER_MIN;
- }
- else
- {
- partBiggest = Part_Sec;
- }
-
- digits = 2;
- break;
- }
-
- if ( digits )
- {
- // negative numbers need one extra position for '-' display
- if ( n < 0 )
- digits++;
-
- fmtPrefix << _T("0") << digits;
- }
-
- str += wxString::Format(fmtPrefix + _T("ld"), n);
- }
- else
- {
- // normal character, just copy
- str += ch;
- }
- }
-
- return str;
-}
-
// ============================================================================
// wxDateTimeHolidayAuthority and related classes
// ============================================================================
wxDateTime& wxDateTime::SetFromMSWSysTime(const SYSTEMTIME& st)
{
return Set(st.wDay,
- wx_static_cast(wxDateTime::Month, wxDateTime::Jan + st.wMonth - 1),
+ static_cast<wxDateTime::Month>(wxDateTime::Jan + st.wMonth - 1),
st.wYear,
0, 0, 0);
}
projects / wxWidgets.git / blobdiff