URL extension

NSURL+EX

- (NSDictionary *)dictQuery {
    NSMutableDictionary *parameters = [NSMutableDictionary dictionary];
    NSString *str = self.query;
    if (str.length && [str rangeOfString:@"="].location != NSNotFound) {
        NSArray *keyValuePairs = [str componentsSeparatedByString:@"&"];
        for (NSString *keyValuePair in keyValuePairs) {
            NSArray *pair = [keyValuePair componentsSeparatedByString:@"="];
            // don't assume we actually got a real key=value pair. start by assuming we only got @[key] before checking count
            NSString *paramValue = pair.count == 2 ? pair[1] : @"";
            // CFURLCreateStringByReplacingPercentEscapesUsingEncoding may return NULL
            parameters[pair[0]] = paramValue ?: @"";
            
        }
    }
    return parameters;
}