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1
2#import "IPTransformer.h"
3
4#include <arpa/inet.h>
5
6@implementation IPTransformer
7
8+(Class)transformedValueClass { return [NSString class]; }
9+(BOOL)allowsReverseTransformation { return YES; }
10-(id)transformedValue:(id)value {
11 if(value &&
12 [value respondsToSelector:@selector(UTF8String)]
13 && inet_addr([value UTF8String])!=INADDR_NONE )
14 return value;
15 return nil;
16}
17-(id)reverseTransformedValue:(id)value {
18 return [self transformedValue:value];
19}
20
21@end \ No newline at end of file