CEPubnub with ARC

29th February 2012 in Programming

If you are struggling to make CEPubnub work with ARC then below is how I solved it for myself.

1. Remove all mentions of release and autorelease from all CEPubnub files. I had to remove quite a few but it was very straightforward.

2. Next step is to rename all methods that call init on object self to start with "init". There will be a couple in CEPubnub.h /.m and CEPubnubRequest.h /.m. Don't forget to find where these methods are called and update method names accordingly. For example, change the following:

-(CEPubnub*)
publishKey:   (NSString*) pub_key
subscribeKey: (NSString*) sub_key
secretKey:    (NSString*) sec_key
sslOn:        (BOOL)      ssl_on
origin:       (NSString*) origin;

to

-(CEPubnub*)
initWithPublishKey:   (NSString*) pub_key
subscribeKey: (NSString*) sub_key
secretKey:    (NSString*) sec_key
sslOn:        (BOOL)      ssl_on
origin:       (NSString*) origin;

3. If you then run Analyser it will say there is a potential memory leak in urlencode method. I had to assign the result of CFURLCreateStringByAddingPercentEscapes to a new NSString object to get rid of the warning.

CFStringRef stringRef = CFURLCreateStringByAddingPercentEscapes(NULL, (__bridge CFStringRef)(string), NULL, (CFStringRef)@"!*'();:@&=+$,/?%#[]", kCFStringEncodingUTF8);
    NSString *newString = [NSString stringWithFormat:@"%@", (__bridge NSString *)stringRef];
    return newString;

I have uploaded my final code here.