]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/datetime.cpp
don't leave pixels due to rounding errors in wxBoxSizer, allocate the extra pixels...
[wxWidgets.git] / src / common / datetime.cpp
index 9bc3e4f992da660a6d6ec81d890e552de896a19b..765e3164192d7fc4adcdda191632be7c24efa5ea 100644 (file)
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Name:        wx/datetime.h
+// Name:        src/common/datetime.cpp
 // Purpose:     implementation of time/date related classes
 // Author:      Vadim Zeitlin
 // Modified by:
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
-// TODO: for $DEITY sake, someone please fix the #ifdef __WXWINCE__ everywhere,
-//       the proper way to do it is to implement (subset of) wxStrftime() for
-//       CE instead of this horror!!
-
 /*
  * Implementation notes:
  *
 #if !defined(wxUSE_DATETIME) || wxUSE_DATETIME
 
 #ifndef WX_PRECOMP
+    #ifdef __WXMSW__
+        #include "wx/msw/wrapwin.h"
+    #endif
     #include "wx/string.h"
     #include "wx/log.h"
+    #include "wx/intl.h"
+    #include "wx/stopwatch.h"           // for wxGetLocalTimeMillis()
+    #include "wx/module.h"
 #endif // WX_PRECOMP
 
-#include "wx/intl.h"
 #include "wx/thread.h"
 #include "wx/tokenzr.h"
-#include "wx/module.h"
 
 #include <ctype.h>
 
 #ifdef __WINDOWS__
-    #include "wx/msw/wrapwin.h"
     #include <winnls.h>
     #ifndef __WXWINCE__
         #include <locale.h>
@@ -86,7 +85,6 @@
 #endif
 
 #include "wx/datetime.h"
-#include "wx/stopwatch.h"           // for wxGetLocalTimeMillis()
 
 const long wxDateTime::TIME_T_FACTOR = 1000l;
 
@@ -139,6 +137,13 @@ wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter<wxDateTime> , wxFromStringCon
     #include <wtime.h>
 #endif
 
+// define a special symbol for VC8 instead of writing tests for 1400 repeatedly
+#ifdef __VISUALC__
+    #if __VISUALC__ >= 1400
+        #define __VISUALC8__
+    #endif
+#endif
+
 #if !defined(WX_TIMEZONE) && !defined(WX_GMTOFF_IN_TM)
     #if defined(__WXPALMOS__)
         #define WX_GMTOFF_IN_TM
@@ -164,23 +169,95 @@ wxCUSTOM_TYPE_INFO(wxDateTime, wxToStringConverter<wxDateTime> , wxFromStringCon
         #define WX_TIMEZONE wxGetTimeZone()
     #elif defined(__DARWIN__)
         #define WX_GMTOFF_IN_TM
+    #elif defined(__WXWINCE__) && defined(__VISUALC8__)
+        #define WX_TIMEZONE _timezone
     #else // unknown platform - try timezone
         #define WX_TIMEZONE timezone
     #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__)
+
+struct tm *wxLocaltime_r(const time_t *t, struct tm* tm)
+{
+    __time64_t t64 = *t;
+    return _localtime64_s(tm, &t64) == 0 ? tm : NULL;
+}
+
+struct tm *wxGmtime_r(const time_t* t, struct tm* tm)
+{
+    __time64_t t64 = *t;
+    return _gmtime64_s(tm, &t64) == 0 ? tm : NULL;
+}
+
+#else // !wxWinCE with VC8
+
+#if (!defined(HAVE_LOCALTIME_R) || !defined(HAVE_GMTIME_R)) && wxUSE_THREADS && !defined(__WINDOWS__)
+static wxMutex timeLock;
+#endif
+
+#ifndef HAVE_LOCALTIME_R
+struct tm *wxLocaltime_r(const time_t* ticks, struct tm* temp)
+{
+#if wxUSE_THREADS && !defined(__WINDOWS__)
+  // No need to waste time with a mutex on windows since it's using
+  // thread local storage for localtime anyway.
+  wxMutexLocker locker(timeLock);
+#endif
+
+  // Borland CRT crashes when passed 0 ticks for some reason, see SF bug 1704438
+#ifdef __BORLANDC__
+  if ( !*ticks )
+      return NULL;
+#endif
+
+  const tm * const t = localtime(ticks);
+  if ( !t )
+      return NULL;
+
+  memcpy(temp, t, sizeof(struct tm));
+  return temp;
+}
+#endif // !HAVE_LOCALTIME_R
+
+#ifndef HAVE_GMTIME_R
+struct tm *wxGmtime_r(const time_t* ticks, struct tm* temp)
+{
+#if wxUSE_THREADS && !defined(__WINDOWS__)
+  // No need to waste time with a mutex on windows since it's
+  // using thread local storage for gmtime anyway.
+  wxMutexLocker locker(timeLock);
+#endif
+
+#ifdef __BORLANDC__
+  if ( !*ticks )
+      return NULL;
+#endif
+
+  const tm * const t = gmtime(ticks);
+  if ( !t )
+      return NULL;
+
+  memcpy(temp, gmtime(ticks), sizeof(struct tm));
+  return temp;
+}
+#endif // !HAVE_GMTIME_R
+
+#endif // wxWinCE with VC8/other platforms
+
 // ----------------------------------------------------------------------------
 // macros
 // ----------------------------------------------------------------------------
 
 // debugging helper: just a convenient replacement of wxCHECK()
-#define wxDATETIME_CHECK(expr, msg)     \
-        if ( !(expr) )                  \
-        {                               \
-            wxFAIL_MSG(msg);            \
-            *this = wxInvalidDateTime;  \
-            return *this;               \
-        }
+#define wxDATETIME_CHECK(expr, msg) \
+    wxCHECK2_MSG(expr, *this = wxInvalidDateTime; return *this, msg)
 
 // ----------------------------------------------------------------------------
 // private classes
@@ -302,32 +379,32 @@ wxDateTime::wxDateTime_t GetNumOfDaysInMonth(int year, wxDateTime::Month month)
 // (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
 
-    // ensure that the timezone variable is set by calling localtime
+    // ensure that the timezone variable is set by calling wxLocaltime_r
     if ( !s_timezoneSet )
     {
-        // just call localtime() instead of figuring out whether this system
-        // supports tzset(), _tzset() or something else
+        // just call wxLocaltime_r() instead of figuring out whether this
+        // system supports tzset(), _tzset() or something else
         time_t t = 0;
-        struct tm *tm;
+        struct tm tm;
 
-        tm = localtime(&t);
+        wxLocaltime_r(&t, &tm);
         s_timezoneSet = true;
 
+#ifdef WX_GMTOFF_IN_TM
         // 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;
+        gmtoffset = -tm.tm_gmtoff;
+#else // !WX_GMTOFF_IN_TM
+        gmtoffset = WX_TIMEZONE;
+#endif // WX_GMTOFF_IN_TM/!WX_GMTOFF_IN_TM
     }
 
     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
@@ -370,7 +447,8 @@ static long GetTruncatedJDN(wxDateTime::wxDateTime_t day,
             - JDN_OFFSET;
 }
 
-#ifndef __WXWINCE__
+#ifdef HAVE_STRFTIME
+
 // this function is a wrapper around strftime(3) adding error checking
 static wxString CallStrftime(const wxChar *format, const tm* tm)
 {
@@ -388,13 +466,14 @@ static wxString CallStrftime(const wxChar *format, const tm* tm)
     s = buf;
     return s;
 }
-#endif
+
+#endif // HAVE_STRFTIME
 
 #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)
+#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
 
@@ -430,10 +509,11 @@ static void ReplaceDefaultYearMonthWithCurrent(int *year,
                                                wxDateTime::Month *month)
 {
     struct tm *tmNow = NULL;
+    struct tm tmstruct;
 
     if ( *year == wxDateTime::Inv_Year )
     {
-        tmNow = wxDateTime::GetTmNow();
+        tmNow = wxDateTime::GetTmNow(&tmstruct);
 
         *year = 1900 + tmNow->tm_year;
     }
@@ -441,7 +521,7 @@ static void ReplaceDefaultYearMonthWithCurrent(int *year,
     if ( *month == wxDateTime::Inv_Month )
     {
         if ( !tmNow )
-            tmNow = wxDateTime::GetTmNow();
+            tmNow = wxDateTime::GetTmNow(&tmstruct);
 
         *month = (wxDateTime::Month)tmNow->tm_mon;
     }
@@ -522,6 +602,13 @@ static wxDateTime::WeekDay GetWeekDayFromName(const wxString& name, int flags)
     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 wxChar*& p, unsigned long *number)
 {
@@ -594,7 +681,7 @@ void wxDateTime::Tm::ComputeWeekDay()
     // compute the week day from day/month/year: we use the dumbest algorithm
     // possible: just compute our JDN and then use the (simple to derive)
     // formula: weekday = (JDN + 1.5) % 7
-    wday = (wxDateTime::wxDateTime_t)((wxDateTime::WeekDay)(GetTruncatedJDN(mday, mon, year) + 2) % 7);
+    wday = (wxDateTime::wxDateTime_t)((GetTruncatedJDN(mday, mon, year) + 2) % 7);
 }
 
 void wxDateTime::Tm::AddMonths(int monDiff)
@@ -686,6 +773,7 @@ wxDateTime::TimeZone::TimeZone(wxDateTime::TZ tz)
         case wxDateTime::GMT10:
         case wxDateTime::GMT11:
         case wxDateTime::GMT12:
+        case wxDateTime::GMT13:
             m_offset = 3600*(tz - wxDateTime::GMT0);
             break;
 
@@ -836,7 +924,7 @@ wxString wxDateTime::GetMonthName(wxDateTime::Month month,
                                   wxDateTime::NameFlags flags)
 {
     wxCHECK_MSG( month != Inv_Month, wxEmptyString, _T("invalid month") );
-#ifndef __WXWINCE__
+#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;
@@ -844,7 +932,7 @@ wxString wxDateTime::GetMonthName(wxDateTime::Month month,
     tm.tm_mon = month;
 
     return CallStrftime(flags == Name_Abbr ? _T("%b") : _T("%B"), &tm);
-#else
+#else // !HAVE_STRFTIME
     wxString ret;
     switch(month)
     {
@@ -886,7 +974,7 @@ wxString wxDateTime::GetMonthName(wxDateTime::Month month,
             break;
     }
     return ret;
-#endif
+#endif // HAVE_STRFTIME/!HAVE_STRFTIME
 }
 
 /* static */
@@ -894,7 +982,7 @@ wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday,
                                     wxDateTime::NameFlags flags)
 {
     wxCHECK_MSG( wday != Inv_WeekDay, wxEmptyString, _T("invalid weekday") );
-#ifndef __WXWINCE__
+#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!)
@@ -912,7 +1000,7 @@ wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday,
 
     // ... and call strftime()
     return CallStrftime(flags == Name_Abbr ? _T("%a") : _T("%A"), &tm);
-#else
+#else // !HAVE_STRFTIME
     wxString ret;
     switch(wday)
     {
@@ -939,8 +1027,7 @@ wxString wxDateTime::GetWeekDayName(wxDateTime::WeekDay wday,
             break;
     }
     return ret;
-
-#endif
+#endif // HAVE_STRFTIME/!HAVE_STRFTIME
 }
 
 /* static */
@@ -988,7 +1075,8 @@ wxDateTime::Country wxDateTime::GetCountry()
     {
         // try to guess from the time zone name
         time_t t = time(NULL);
-        struct tm *tm = localtime(&t);
+        struct tm tmstruct;
+        struct tm *tm = wxLocaltime_r(&t, &tmstruct);
 
         wxString tz = CallStrftime(_T("%Z"), tm);
         if ( tz == _T("WET") || tz == _T("WEST") )
@@ -1017,9 +1105,9 @@ wxDateTime::Country wxDateTime::GetCountry()
             ms_country = USA;
         }
     }
-#else
+#else // __WXWINCE__
      ms_country = USA;
-#endif
+#endif // !__WXWINCE__/__WXWINCE__
 
     return ms_country;
 }
@@ -1311,9 +1399,10 @@ wxDateTime& wxDateTime::Set(wxDateTime_t hour,
                       _T("Invalid time in wxDateTime::Set()") );
 
     // get the current date from system
-    struct tm *tm = GetTmNow();
+    struct tm tmstruct;
+    struct tm *tm = GetTmNow(&tmstruct);
 
-    wxDATETIME_CHECK( tm, _T("localtime() failed") );
+    wxDATETIME_CHECK( tm, _T("wxLocaltime_r() failed") );
 
     // make a copy so it isn't clobbered by the call to mktime() below
     struct tm tm1(*tm);
@@ -1428,6 +1517,16 @@ wxDateTime& wxDateTime::ResetTime()
     return *this;
 }
 
+wxDateTime wxDateTime::GetDateOnly() const
+{
+    Tm tm = GetTm();
+    tm.msec =
+    tm.sec =
+    tm.min =
+    tm.hour = 0;
+    return wxDateTime(tm);
+}
+
 // ----------------------------------------------------------------------------
 // DOS Date and Time Format functions
 // ----------------------------------------------------------------------------
@@ -1479,7 +1578,8 @@ unsigned long wxDateTime::GetAsDOS() const
 {
     unsigned long ddt;
     time_t ticks = GetTicks();
-    struct tm *tm = localtime(&ticks);
+    struct tm tmstruct;
+    struct tm *tm = wxLocaltime_r(&ticks, &tmstruct);
 
     long year = tm->tm_year;
     year -= 80;
@@ -1517,14 +1617,15 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const
     if ( time != (time_t)-1 )
     {
         // use C RTL functions
+        struct tm tmstruct;
         tm *tm;
         if ( tz.GetOffset() == -GetTimeZone() )
         {
             // we are working with local time
-            tm = localtime(&time);
+            tm = wxLocaltime_r(&time, &tmstruct);
 
             // should never happen
-            wxCHECK_MSG( tm, Tm(), _T("localtime() failed") );
+            wxCHECK_MSG( tm, Tm(), _T("wxLocaltime_r() failed") );
         }
         else
         {
@@ -1536,10 +1637,10 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const
             if ( time >= 0 )
 #endif
             {
-                tm = gmtime(&time);
+                tm = wxGmtime_r(&time, &tmstruct);
 
                 // should never happen
-                wxCHECK_MSG( tm, Tm(), _T("gmtime() failed") );
+                wxCHECK_MSG( tm, Tm(), _T("wxGmtime_r() failed") );
             }
             else
             {
@@ -1773,6 +1874,7 @@ wxDateTime::SetToWeekOfYear(int year, wxDateTime_t numWeek, WeekDay wd)
     return dt;
 }
 
+#if WXWIN_COMPATIBILITY_2_6
 // use a separate function to avoid warnings about using deprecated
 // SetToTheWeek in GetWeek below
 static wxDateTime
@@ -1810,6 +1912,7 @@ wxDateTime wxDateTime::GetWeek(wxDateTime_t numWeek,
 {
     return ::SetToTheWeek(GetYear(), numWeek, weekday, flags);
 }
+#endif // WXWIN_COMPATIBILITY_2_6
 
 wxDateTime& wxDateTime::SetToLastMonthDay(Month month,
                                           int year)
@@ -2120,9 +2223,10 @@ int wxDateTime::IsDST(wxDateTime::Country country) const
     time_t timet = GetTicks();
     if ( timet != (time_t)-1 )
     {
-        tm *tm = localtime(&timet);
+        struct tm tmstruct;
+        tm *tm = wxLocaltime_r(&timet, &tmstruct);
 
-        wxCHECK_MSG( tm, -1, _T("localtime() failed") );
+        wxCHECK_MSG( tm, -1, _T("wxLocaltime_r() failed") );
 
         return tm->tm_isdst;
     }
@@ -2180,18 +2284,21 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
 
     // 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()
-        tm *tm;
+        struct tm tmstruct;
+        struct tm *tm;
         if ( tz.GetOffset() == -GetTimeZone() )
         {
             // we are working with local time
-            tm = localtime(&time);
+            tm = wxLocaltime_r(&time, &tmstruct);
 
             // should never happen
-            wxCHECK_MSG( tm, wxEmptyString, _T("localtime() failed") );
+            wxCHECK_MSG( tm, wxEmptyString, _T("wxLocaltime_r() failed") );
         }
         else
         {
@@ -2204,25 +2311,24 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
             if ( time >= 0 )
 #endif
             {
-                tm = gmtime(&time);
+                tm = wxGmtime_r(&time, &tmstruct);
 
                 // should never happen
-                wxCHECK_MSG( tm, wxEmptyString, _T("gmtime() failed") );
+                wxCHECK_MSG( tm, wxEmptyString, _T("wxGmtime_r() failed") );
             }
             else
             {
                 tm = (struct tm *)NULL;
             }
         }
-#ifndef __WXWINCE__
-    //Windows CE doesn't support strftime or wcsftime, so we use the generic implementation
+
         if ( tm )
         {
             return CallStrftime(format, tm);
         }
-#endif
-        //else: use generic code below
     }
+    //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
@@ -2299,7 +2405,7 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
 
                 case _T('c'):       // locale default date and time  representation
                 case _T('x'):       // locale default date representation
-#ifndef __WXWINCE__
+#ifdef HAVE_STRFTIME
                     //
                     // the problem: there is no way to know what do these format
                     // specifications correspond to for the current locale.
@@ -2363,6 +2469,9 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
                             nLostWeekDays += year++ % 4 ? 1 : 2;
                         }
 
+                        // Keep year below 2000 so the 2digit year number
+                        // can never match the month or day of the month
+                        if (year>=2000) year-=28;
                         // at any rate, we couldn't go further than 1988 + 9 + 28!
                         wxASSERT_MSG( year < 2030,
                                       _T("logic error in wxDateTime::Format") );
@@ -2371,25 +2480,30 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
                         strYear.Printf(_T("%d"), year);
                         strYear2.Printf(_T("%d"), year % 100);
 
-                        // find two strings not occurring in format (this is surely
+                        // find four strings not occurring in format (this is surely
                         // not the optimal way of doing it... improvements welcome!)
-                        wxString fmt = format;
-                        wxString replacement = (wxChar)-1;
-                        while ( fmt.Find(replacement) != wxNOT_FOUND )
+                        wxString fmt2 = format;
+                        wxString replacement,replacement2,replacement3,replacement4;
+                        for (int rnr=1; rnr<5 ; rnr++)
                         {
-                            replacement << (wxChar)-1;
-                        }
+                            wxString r = (wxChar)-rnr;
+                            while ( fmt2.Find(r) != wxNOT_FOUND )
+                            {
+                                r << (wxChar)-rnr;
+                            }
 
-                        wxString replacement2 = (wxChar)-2;
-                        while ( fmt.Find(replacement) != wxNOT_FOUND )
-                        {
-                            replacement << (wxChar)-2;
+                            switch (rnr)
+                            {
+                                case 1: replacement=r; break;
+                                case 2: replacement2=r; break;
+                                case 3: replacement3=r; break;
+                                case 4: replacement4=r; break;
+                            }
                         }
-
                         // replace all occurrences of year with it
-                        bool wasReplaced = fmt.Replace(strYear, replacement) > 0;
-                        if ( !wasReplaced )
-                            wasReplaced = fmt.Replace(strYear2, replacement2) > 0;
+                        bool wasReplaced = fmt2.Replace(strYear, replacement) > 0;
+                        // evaluation order ensures we always attempt the replacement.
+                        wasReplaced = (fmt2.Replace(strYear2, replacement2) > 0) || wasReplaced;
 
                         // use strftime() to format the same date but in supported
                         // year
@@ -2414,11 +2528,17 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
                                                     &tmAdjusted);
 
                         // now replace the occurrence of 1999 with the real year
+                        // we do this in two stages to stop the 2 digit year
+                        // matching any substring of the 4 digit year.
+                        // Any day,month hours and minutes components should be safe due
+                        // to ensuring the range of the years.
                         wxString strYearReal, strYearReal2;
                         strYearReal.Printf(_T("%04d"), yearReal);
                         strYearReal2.Printf(_T("%02d"), yearReal % 100);
-                        str.Replace(strYear, strYearReal);
-                        str.Replace(strYear2, strYearReal2);
+                        str.Replace(strYear, replacement3);
+                        str.Replace(strYear2,replacement4);
+                        str.Replace(replacement3, strYearReal);
+                        str.Replace(replacement4, strYearReal2);
 
                         // and replace back all occurrences of replacement string
                         if ( wasReplaced )
@@ -2429,11 +2549,11 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
 
                         res += str;
                     }
-#else
-                    //Use "%m/%d/%y %H:%M:%S" format instead
+#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
+#endif // HAVE_STRFTIME/!HAVE_STRFTIME
                     break;
 
                 case _T('d'):       // day of a month (01-31)
@@ -2470,11 +2590,11 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
                     break;
 
                 case _T('p'):       // AM or PM string
-#ifndef __WXWINCE__
+#ifdef HAVE_STRFTIME
                     res += CallStrftime(_T("%p"), &tmTimeOnly);
-#else
+#else // !HAVE_STRFTIME
                     res += (tmTimeOnly.tm_hour > 12) ? wxT("pm") : wxT("am");
-#endif
+#endif // HAVE_STRFTIME/!HAVE_STRFTIME
                     break;
 
                 case _T('S'):       // second as a decimal number (00-61)
@@ -2497,11 +2617,11 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
 
                 case _T('X'):       // locale default time representation
                     // just use strftime() to format the time for us
-#ifndef __WXWINCE__
+#ifdef HAVE_STRFTIME
                     res += CallStrftime(_T("%X"), &tmTimeOnly);
-#else
+#else // !HAVE_STRFTIME
                     res += wxString::Format(wxT("%02d:%02d:%02d"),tm.hour, tm.min, tm.sec);
-#endif
+#endif // HAVE_STRFTIME/!HAVE_STRFTIME
                     break;
 
                 case _T('y'):       // year without century (00-99)
@@ -2513,7 +2633,7 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
                     break;
 
                 case _T('Z'):       // timezone name
-#ifndef __WXWINCE__
+#ifdef HAVE_STRFTIME
                     res += CallStrftime(_T("%Z"), &tmTimeOnly);
 #endif
                     break;
@@ -2843,7 +2963,7 @@ const wxChar *wxDateTime::ParseRfc822Date(const wxChar* date)
 
             p += tz.length();
         }
-        
+
         // make it minutes
         offset *= MIN_PER_HOUR;
     }
@@ -3692,12 +3812,12 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date)
 
     for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ )
     {
-        wxString date = wxGetTranslation(literalDates[n].str);
-        size_t len = date.length();
+        const wxString dateStr = wxGetTranslation(literalDates[n].str);
+        size_t len = dateStr.length();
         if ( wxStrlen(p) >= len )
         {
             wxString str(p, len);
-            if ( str.CmpNoCase(date) == 0 )
+            if ( str.CmpNoCase(dateStr) == 0 )
             {
                 // nothing can follow this, so stop here
                 p += len;
@@ -3765,9 +3885,11 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date)
                 }
                 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 : Inv_Year, mon)
+                        ? GetNumOfDaysInMonth(haveYear ? year : 1976, mon)
                         : 31
                     );
 
@@ -3920,7 +4042,7 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date)
     {
         wxLogDebug(_T("ParseDate: no day, no weekday hence no date."));
 
-        return (wxChar *)NULL;
+        return NULL;
     }
 
     if ( haveWDay && (haveMon || haveYear || haveDay) &&
@@ -3929,7 +4051,7 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date)
         // without adjectives (which we don't support here) the week day only
         // makes sense completely separately or with the full date
         // specification (what would "Wed 1999" mean?)
-        return (wxChar *)NULL;
+        return NULL;
     }
 
     if ( !haveWDay && haveYear && !(haveDay && haveMon) )
@@ -3959,7 +4081,7 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date)
             // 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;
+            return NULL;
         }
     }
 
@@ -3975,6 +4097,11 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date)
 
     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 )
@@ -4172,11 +4299,14 @@ wxString wxTimeSpan::Format(const wxChar *format) const
         if ( ch == _T('%') )
         {
             // the start of the format specification of the printf() below
-            wxString fmtPrefix = _T('%');
+            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 )
             {
@@ -4211,6 +4341,13 @@ wxString wxTimeSpan::Format(const wxChar *format) const
                     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
@@ -4218,25 +4355,31 @@ wxString wxTimeSpan::Format(const wxChar *format) const
                         partBiggest = Part_Hour;
                     }
 
-                    fmtPrefix += _T("02");
+                    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
 
-                    fmtPrefix += _T("03");
+                    digits = 3;
                     break;
 
                 case _T('M'):
                     n = GetMinutes();
                     if ( partBiggest < Part_Min )
                     {
+                        if ( n < 0 )
+                            n = -n;
+
                         n %= MIN_PER_HOUR;
                     }
                     else
@@ -4244,13 +4387,16 @@ wxString wxTimeSpan::Format(const wxChar *format) const
                         partBiggest = Part_Min;
                     }
 
-                    fmtPrefix += _T("02");
+                    digits = 2;
                     break;
 
                 case _T('S'):
                     n = GetSeconds().ToLong();
                     if ( partBiggest < Part_Sec )
                     {
+                        if ( n < 0 )
+                            n = -n;
+
                         n %= SEC_PER_MIN;
                     }
                     else
@@ -4258,10 +4404,19 @@ wxString wxTimeSpan::Format(const wxChar *format) const
                         partBiggest = Part_Sec;
                     }
 
-                    fmtPrefix += _T("02");
+                    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
@@ -4280,7 +4435,7 @@ wxString wxTimeSpan::Format(const wxChar *format) const
 
 #include "wx/arrimpl.cpp"
 
-WX_DEFINE_OBJARRAY(wxDateTimeArray);
+WX_DEFINE_OBJARRAY(wxDateTimeArray)
 
 static int wxCMPFUNC_CONV
 wxDateTimeCompareFunc(wxDateTime **first, wxDateTime **second)
@@ -4322,8 +4477,8 @@ wxDateTimeHolidayAuthority::GetHolidaysInRange(const wxDateTime& dtStart,
 
     holidays.Clear();
 
-    size_t count = ms_authorities.size();
-    for ( size_t nAuth = 0; nAuth < count; nAuth++ )
+    const size_t countAuth = ms_authorities.size();
+    for ( size_t nAuth = 0; nAuth < countAuth; nAuth++ )
     {
         ms_authorities[nAuth]->DoGetHolidaysInRange(dtStart, dtEnd, hol);