Initial implementation of 'others shared'.

[pithos-macos] / pithos-macos / AllowedToBoolTransformer.m

diff --git a/pithos-macos/AllowedToBoolTransformer.m b/pithos-macos/AllowedToBoolTransformer.m
new file mode 100644 (file)
index 0000000..7cd0c8d
--- /dev/null
+++ b/pithos-macos/AllowedToBoolTransformer.m
@@ -0,0 +1,60 @@
+//
+//  AllowedToBoolTransformer.m
+//  pithos-macos
+//
+// Copyright 2011 GRNET S.A. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or
+// without modification, are permitted provided that the following
+// conditions are met:
+// 
+//   1. Redistributions of source code must retain the above
+//      copyright notice, this list of conditions and the following
+//      disclaimer.
+// 
+//   2. Redistributions in binary form must reproduce the above
+//      copyright notice, this list of conditions and the following
+//      disclaimer in the documentation and/or other materials
+//      provided with the distribution.
+// 
+// THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
+// OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
+// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+// USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+// 
+// The views and conclusions contained in the software and
+// documentation are those of the authors and should not be
+// interpreted as representing official policies, either expressed
+// or implied, of GRNET S.A.
+
+#import "AllowedToBoolTransformer.h"
+
+@implementation AllowedToBoolTransformer
+
++ (Class)transformedValueClass {
+       return [NSNumber class];
+}
+
++ (BOOL)allowsReverseTransformation {
+       return NO;
+}
+
+- (id)transformedValue:(id)value {
+    if (value == nil)
+        return [NSNumber numberWithBool:YES];
+    return [NSNumber numberWithBool:[(NSString *)value isEqualTo:@"write"]];
+}
+
++ (void)initialize {
+    [[NSValueTransformer class] setValueTransformer:[self new] forName:@"AllowedToBoolTransformer"];
+}
+
+@end