Added "set new icon" menu item to taskbar sample; updated some makefiles

[wxWidgets.git] / src / common / datetime.cpp

diff --git a/src/common/datetime.cpp b/src/common/datetime.cpp
index 6dab7627004e93baeb2ec20eaed898d582c18b88..a38960ec0549885a302e92437965d9842755d93a 100644 (file)
--- a/src/common/datetime.cpp
+++ b/src/common/datetime.cpp
@@ -152,10 +152,16 @@ IMPLEMENT_DYNAMIC_CLASS(wxDateTimeHolidaysModule, wxModule)
 // some trivial ones
 static const int MONTHS_IN_YEAR = 12;
 
-static const int SECONDS_IN_MINUTE = 60;
+static const int SEC_PER_MIN = 60;
+
+static const int MIN_PER_HOUR = 60;
+
+static const int HOURS_PER_DAY = 24;
 
 static const long SECONDS_PER_DAY = 86400l;
 
+static const int DAYS_PER_WEEK = 7;
+
 static const long MILLISECONDS_PER_DAY = 86400000l;
 
 // this is the integral part of JDN of the midnight of Jan 1, 1970
@@ -1243,7 +1249,7 @@ wxDateTime::Tm wxDateTime::GetTm(const TimeZone& tz) const
         else
         {
             time += (time_t)tz.GetOffset();
-#ifdef __VMS__ // time is unsigned so avoid warning
+#if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning
             int time2 = (int) time;
             if ( time2 >= 0 )
 #else
@@ -1810,7 +1816,7 @@ wxString wxDateTime::Format(const wxChar *format, const TimeZone& tz) const
         {
             time += (int)tz.GetOffset();
 
-#ifdef __VMS__ // time is unsigned so avoid the warning
+#if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning
             int time2 = (int) time;
             if ( time2 >= 0 )
 #else
@@ -3113,7 +3119,7 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date)
                     : 31;
 
                 // can it be day?
-                if ( (val == 0) || (val > maxDays) )
+                if ( (val == 0) || (val > (unsigned long)maxDays) )  // cast to shut up compiler warning in BCC
                 {
                     isYear = TRUE;
                 }
@@ -3245,7 +3251,7 @@ const wxChar *wxDateTime::ParseDate(const wxChar *date)
 
                     haveDay = TRUE;
 
-                    day = n + 1;
+                    day = (wxDateTime_t)(n + 1);
                 }
             }
         }
@@ -3454,13 +3460,41 @@ wxString wxTimeSpan::Format(const wxChar *format) const
     wxString str;
     str.Alloc(wxStrlen(format));
 
+    // Suppose we have wxTimeSpan ts(1 /* hour */, 2 /* min */, 3 /* sec */)
+    //
+    // Then, of course, ts.Format("%H:%M:%S") must return "01:02:03", but the
+    // question is what should ts.Format("%S") do? The code here returns "3273"
+    // in this case (i.e. the total number of seconds, not just seconds % 60)
+    // because, for me, this call means "give me entire time interval in
+    // seconds" and not "give me the seconds part of the time interval"
+    //
+    // If we agree that it should behave like this, it is clear that the
+    // interpretation of each format specifier depends on the presence of the
+    // other format specs in the string: if there was "%H" before "%M", we
+    // should use GetMinutes() % 60, otherwise just GetMinutes() &c
+
+    // we remember the most important unit found so far
+    enum TimeSpanPart
+    {
+        Part_Week,
+        Part_Day,
+        Part_Hour,
+        Part_Min,
+        Part_Sec,
+        Part_MSec
+    } partBiggest = Part_MSec;
+
     for ( const wxChar *pch = format; *pch; pch++ )
     {
         wxChar ch = *pch;
 
         if ( ch == _T('%') )
         {
-            wxString tmp;
+            // the start of the format specification of the printf() below
+            wxString fmtPrefix = _T('%');
+
+            // the number
+            long n;
 
             ch = *++pch;    // get the format spec char
             switch ( ch )
@@ -3470,44 +3504,90 @@ wxString wxTimeSpan::Format(const wxChar *format) const
                     // fall through
 
                 case _T('%'):
-                    // will get to str << ch below
-                    break;
+                    str += ch;
+
+                    // skip the part below switch
+                    continue;
 
                 case _T('D'):
-                    tmp.Printf(_T("%d"), GetDays());
+                    n = GetDays();
+                    if ( partBiggest < Part_Day )
+                    {
+                        n %= DAYS_PER_WEEK;
+                    }
+                    else
+                    {
+                        partBiggest = Part_Day;
+                    }
                     break;
 
                 case _T('E'):
-                    tmp.Printf(_T("%d"), GetWeeks());
+                    partBiggest = Part_Week;
+                    n = GetWeeks();
                     break;
 
                 case _T('H'):
-                    tmp.Printf(_T("%02d"), GetHours());
+                    n = GetHours();
+                    if ( partBiggest < Part_Hour )
+                    {
+                        n %= HOURS_PER_DAY;
+                    }
+                    else
+                    {
+                        partBiggest = Part_Hour;
+                    }
+
+                    fmtPrefix += _T("02");
                     break;
 
                 case _T('l'):
-                    tmp.Printf(_T("%03ld"), GetMilliseconds().ToLong());
+                    n = GetMilliseconds().ToLong();
+                    if ( partBiggest < Part_MSec )
+                    {
+                        n %= 1000;
+                    }
+                    //else: no need to reset partBiggest to Part_MSec, it is
+                    //      the least significant one anyhow
+
+                    fmtPrefix += _T("03");
                     break;
 
                 case _T('M'):
-                    tmp.Printf(_T("%02d"), GetMinutes());
+                    n = GetMinutes();
+                    if ( partBiggest < Part_Min )
+                    {
+                        n %= MIN_PER_HOUR;
+                    }
+                    else
+                    {
+                        partBiggest = Part_Min;
+                    }
+
+                    fmtPrefix += _T("02");
                     break;
 
                 case _T('S'):
-                    tmp.Printf(_T("%02ld"), GetSeconds().ToLong());
+                    n = GetSeconds().ToLong();
+                    if ( partBiggest < Part_Sec )
+                    {
+                        n %= SEC_PER_MIN;
+                    }
+                    else
+                    {
+                        partBiggest = Part_Sec;
+                    }
+
+                    fmtPrefix += _T("02");
                     break;
             }
 
-            if ( !!tmp )
-            {
-                str += tmp;
-
-                // skip str += ch below
-                continue;
-            }
+            str += wxString::Format(fmtPrefix + _T("ld"), n);
+        }
+        else
+        {
+            // normal character, just copy
+            str += ch;
         }
-
-        str += ch;
     }
 
     return str;