Added missing Mac OS X 10.6 methods related to NSSortDescriptor

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@37689 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,12 @@
+2014-02-14  Quentin Mathe <quentin.mathe@gmail.com>
+
+	* Headers/Foundation/NSSortDescriptor.h 
+	* Source/Foundation/NSSortDescriptor.m
+	(+sortDescriptorWithKey:ascending:selector:, 
+	+sortDescriptorWithKey:ascending, 
+	-[NSSet sortedArrayUsingDescriptors:]): Added missing Mac OS X 10.6 
+	methods.
+
 2014-02-13  Richard Frith-Macdonald <rfm@gnu.org>
 
 	* Source/GSFormat.m: Fix to cope with cases where a format specifies

Headers/Foundation/NSSortDescriptor.h

@@ -30,6 +30,7 @@
 
 #import	<Foundation/NSObject.h>
 #import	<Foundation/NSArray.h>
+#import	<Foundation/NSSet.h>
 
 #if	defined(__cplusplus)
 extern "C" {
@@ -74,6 +75,25 @@ extern "C" {
  */
 - (NSComparisonResult) compareObject: (id)object1 toObject: (id)object2;
 
+#if OS_API_VERSION(MAC_OS_X_VERSION_10_6, GS_API_LATEST) 
+/** Returns an autoreleased sort descriptor for comparisons using the 
+ * 'compare:' selector and the specified key and ordering.
+ *
+ * See also -initWithKey:ascending:.
+ */
++ (id) sortDescriptorWithKey: (NSString *)aKey ascending: (BOOL)ascending;
+
+/** Returns an autoreleased sort descriptor initialized to perform comparisons 
+ * in the specified order using aSelector to compare the property aKey of each 
+ * object.
+ *
+ * See also -initWithKey:ascending:selector:.
+ */
++ (id) sortDescriptorWithKey: (NSString *)aKey 
+                   ascending: (BOOL)ascending 
+                    selector: (SEL)aSelector;
+#endif
+
 /** Initialises the receiver for comparisons using the 'compare:' selector
  * and the specified key and ordering.
  */
@@ -129,6 +149,16 @@ extern "C" {
 
 @end
 
+#if OS_API_VERSION(MAC_OS_X_VERSION_10_6,GS_API_LATEST) 
+@interface NSSet (NSSortDescriptorSorting)
+ /**
+ * Produces a sorted array from using the mechanism described for
+ * [NSMutableArray-sortUsingDescriptors:]
+ */
+- (NSArray *) sortedArrayUsingDescriptors: (NSArray *)sortDescriptors;
+@end
+#endif
+
 #if	defined(__cplusplus)
 }
 #endif

Source/NSSortDescriptor.m

@@ -121,6 +121,20 @@ static BOOL     initialized = NO;
   return _ascending + GSPrivateHash(0, sel, strlen(sel)) + [_key hash];
 }
 
++ (id) sortDescriptorWithKey: (NSString *)aKey ascending: (BOOL)ascending
+{
+	return AUTORELEASE([[self alloc] initWithKey: aKey ascending: ascending]);
+}
+
++ (id) sortDescriptorWithKey: (NSString *)aKey 
+                   ascending: (BOOL)ascending 
+                    selector: (SEL)aSelector
+{
+	return AUTORELEASE([[self alloc] initWithKey: aKey 
+	                                   ascending: ascending 
+	                                    selector: aSelector]);
+}
+
 - (id) initWithKey: (NSString *) key ascending: (BOOL) ascending
 {
   return [self initWithKey: key ascending: ascending selector: NULL];
@@ -449,3 +463,13 @@ SortRange(id *objects, NSRange range, id *descriptors,
 }
 
 @end
+
+@implementation NSSet (NSSortDescriptorSorting) 
+
+- (NSArray *) sortedArrayUsingDescriptors: (NSArray *)sortDescriptors
+{
+	return [[self allObjects] sortedArrayUsingDescriptors: sortDescriptors];
+}
+
+@end
+