Fixed +[NSValueTransformer valueTransformerForName:] to automatically register

any available NSValueTransformer subclass that matches  the given name and is 
not yet registered. This behavior is described in the Cocoa API documentation.


git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/base/trunk@37565 72102866-910b-0410-8b05-ffd578937521

ChangeLog

@@ -1,3 +1,10 @@
+2014-01-08  Quentin Mathe <quentin.mathe@gmail.com>
+
+	* Source/NSValueTransformer (+valueTransformerForName:): Fixed to 
+	automatically register any available NSValueTransformer subclass that 
+	matches  the given name and is not yet registered. This behavior is 
+	described in the Cocoa API documentation.
+
 2014-01-08  Richard Frith-Macdonald <rfm@gnu.org>
 
 	* Source/NSUUID.m:

Headers/Foundation/NSValueTransformer.h

@@ -85,6 +85,10 @@ GS_EXPORT NSString* const NSUnarchiveFromDataTransformerName;
 /**
  * Returns the transformer registered for the specified name, or nil
  * if no transformer is registered for name.
+ *
+ * If no transformer is found, but the name corresponds to a valid 
+ * NSValueTransformer subclass name, the receiver instantiates this subclass 
+ * using -init and registers it automatically for name.
  */
 + (NSValueTransformer *) valueTransformerForName: (NSString *)name;
 

Source/NSValueTransformer.m

@@ -102,6 +102,20 @@ static GSLazyLock *lock = nil;
   [lock lock];
   transformer = [registry objectForKey: name];
   IF_NO_GC([transformer retain];)
+
+  if (transformer == nil)
+    {
+      Class transformerClass = NSClassFromString(name);
+
+      if (transformerClass != Nil 
+        && [transformerClass isSubclassOfClass: [NSValueTransformer class]])
+        {
+          transformer = [[transformerClass alloc] init];
+
+          [registry setObject: transformer forKey: name];
+        }
+    }
+
   [lock unlock];
   return AUTORELEASE(transformer);
 }