added -isNotEmpty to NSData

[sope] / sope-core / NGExtensions / NGCalendarDateRange.m

diff --git a/sope-core/NGExtensions/NGCalendarDateRange.m b/sope-core/NGExtensions/NGCalendarDateRange.m
index 74e5ce7ee245d4794c9d4dd1fe03b87048c2cec3..3e491fa70308539ca69bbb296716eee1d3b5722f 100644 (file)
--- a/sope-core/NGExtensions/NGCalendarDateRange.m
+++ b/sope-core/NGExtensions/NGCalendarDateRange.m
@@ -1,20 +1,20 @@
 /*
   Copyright (C) 2004 Marcus Mueller
 
-  This file is part of OpenGroupware.org.
+  This file is part of SOPE.
 
-  OGo is free software; you can redistribute it and/or modify it under
+  SOPE is free software; you can redistribute it and/or modify it under
   the terms of the GNU Lesser General Public License as published by the
   Free Software Foundation; either version 2, or (at your option) any
   later version.
 
-  OGo is distributed in the hope that it will be useful, but WITHOUT ANY
+  SOPE 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 Lesser General Public
   License for more details.
 
   You should have received a copy of the GNU Lesser General Public
-  License along with OGo; see the file COPYING.  If not, write to the
+  License along with SOPE; see the file COPYING.  If not, write to the
   Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
   02111-1307, USA.
 */
@@ -81,11 +81,20 @@
     c = self->startDate;
     d = self->endDate;
   }
+  // [a;b[ ?< [c;d[
   if ([b compare:c] == NSOrderedAscending)
     return nil; // no intersection
-  if ([b compare:d] == NSOrderedAscending)
-    return [NGCalendarDateRange calendarDateRangeWithStartDate:c endDate:b];
-  
+  // b ?< d
+  if ([b compare:d] == NSOrderedAscending) {
+    // c !< b  && b !< d -> [c;b[
+    if([c compare:b] == NSOrderedSame)
+      return nil; // no real range, thus return nil!
+    else
+      return [NGCalendarDateRange calendarDateRangeWithStartDate:c endDate:b];
+  }
+  if([c compare:d] == NSOrderedSame)
+    return nil; // no real range, thus return nil!
+  // b !> d -> [c;d[
   return [NGCalendarDateRange calendarDateRangeWithStartDate:c endDate:d];
 }
 
@@ -116,9 +125,32 @@
   return [NGCalendarDateRange calendarDateRangeWithStartDate:a endDate:b];
 }
 
-- (BOOL)containsDate:(NSCalendarDate *)date {
-  return ([self->startDate earlierDate:date] == self->startDate && 
-         [self->endDate laterDate:date] == self->endDate) ? YES : NO;
+- (BOOL)containsDate:(NSCalendarDate *)_date {
+  NSComparisonResult result;
+  
+  result = [self->startDate compare:_date];
+  if (!((result == NSOrderedSame) || (result == NSOrderedAscending)))
+    return NO;
+  result = [self->endDate compare:_date];
+  if (result == NSOrderedAscending)
+    return NO;
+  return YES;
+}
+
+- (BOOL)containsDateRange:(NGCalendarDateRange *)_range {
+  NSComparisonResult result;
+
+  result = [self->startDate compare:[_range startDate]];
+  if (!((result == NSOrderedSame) || (result == NSOrderedAscending)))
+    return NO;
+  result = [self->endDate compare:[_range endDate]];
+  if (result == NSOrderedAscending)
+    return NO;
+  return YES;
+}
+
+- (NSTimeInterval)duration {
+  return [self->endDate timeIntervalSinceDate:self->startDate];
 }
 
 /* comparison */
@@ -164,6 +196,7 @@
 
 @end /* NGCalendarDateRange */
 
+
 @implementation NSArray(NGCalendarDateRanges)
 
 - (NSArray *)arrayByCreatingDateRangesFromObjectsWithStartDateKey:(NSString *)s