Straightforward way of performing URL encoding and decoding of strings, especially useful for use in conjunction with TTNavigtor and URL Mapping

URLEncode NSString Additions

@interface NSString (FXNSStringAdditions)

- (NSString *)urlEncoded;
- (NSString *)urlDecoded;

@end

@implementation NSString (FXNSStringAdditions)

- (NSString *)urlEncoded { 
	NSString *result = (NSString *) 
	CFURLCreateStringByAddingPercentEscapes (kCFAllocatorDefault,(CFStringRef)self, NULL, CFSTR(":/?# []@!$&’()*+,;="), kCFStringEncodingASCII); 
	return [result autorelease]; 
} 

- (NSString *)urlDecoded { 
	NSString *result = (NSString *) 
	CFURLCreateStringByReplacingPercentEscapesUsingEncoding(kCFAllocatorDefault, (CFStringRef)self,CFSTR(""), kCFStringEncodingASCII);
	return [result autorelease]; 
} 

@end