1 files changed, 135 insertions, 0 deletions
diff --git a/kspread/kspread_functions_helper.cpp b/kspread/kspread_functions_helper.cpp
new file mode 100644
index 00000000..92f7b1ae
--- /dev/null
+++ b/kspread/kspread_functions_helper.cpp
@@ -0,0 +1,135 @@
+/* This file is part of the KDE project
+   Copyright (C) 1998-2002 The KSpread Team
+                           www.koffice.org/kspread
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+*/
+
+#include <tqdatetime.h>
+
+#include "kspread_functions_helper.h"
+
+/*  DISABLED - we use KCalendarSystem instead
+void addMonths( TQDate & date, int months )
+{
+  int d = date.day();
+  int m = date.month() + months;
+  int y = date.year();
+
+  if ( m > 12 )
+  {
+    y += (int) ( m / 12 );
+    m %= 12;
+  }
+
+  // e.g. 31 Feb: decrease day...
+  while ( !TQDate::isValid( y, m, d ) && d > 0 )
+    --d;
+
+  date.setYMD( y, m, d );
+}
+
+void subMonths( TQDate & date, int months )
+{
+  int d = date.day();
+  int m = date.month() - months;
+  int y = date.year();
+
+  while ( m < 1 )
+  {
+    m += 12;
+    y -= 1;
+  }
+
+  // e.g. 31 Feb: decrease day
+  while ( !TQDate::isValid( y, m, d ) && d > 0 )
+    --d;
+
+  date.setYMD( y, m, d );
+}
+
+*/
+
+int KSpread::daysPerYear(TQDate const & date, int basis)
+{
+  switch( basis )
+  {
+   case 0:
+    return 360;
+
+   case 1:
+    if ( TQDate::leapYear( date.year() ) )
+      return 366;
+    return 365;
+
+   case 2:
+    return 360;
+   case 3:
+    return 365;
+   case 4:
+    return 360;
+  }
+
+  return -1;
+}
+
+int KSpread::daysBetweenDates(TQDate const & date1, TQDate const & date2, int basis)
+{
+  int day1, day2, month1, month2, year1, year2;
+  bool isLeapYear = false;
+  int days, months, years;
+
+  day1   = date1.day();
+  month1 = date1.month();
+  year1  = date1.year();
+  day2   = date2.day();
+  month2 = date2.month();
+  year2  = date2.year();
+
+  years  = year2  - year1;
+  months = month2 - month1 + years * 12;
+  days   = day2   - day1;
+
+  isLeapYear = TQDate::leapYear( year1 );
+
+  switch (basis)
+  {
+   case 0:
+    if ( month1 == 2 && month2 != 2 && year1 == year2 )
+    {
+      if ( isLeapYear )
+        return months * 30 + days - 1;
+      else
+        return months * 30 + days - 2;
+    }
+    return months * 30 + days;
+
+   case 1: // TODO: real days for difference between months!
+    //    return ( month2 - month1 ) * 30 + years * 360 + days;
+
+   case 2: // TODO: real days for difference between months!
+    //    return ( month2 - month1 ) * 30 + years * 365 + days;
+
+   case 3:
+    return date1.daysTo( date2 );
+
+   case 4:
+    return months * 30 + days;
+  }
+
+  return -1;
+}
+