mods/atsocial_iphone_app/OAuth/OAAsynchronousDataFetcher.m

   1 //
   2 //  OAAsynchronousDataFetcher.m
   3 //  OAuthConsumer
   4 //
   5 //  Created by Zsombor Szabó on 12/3/08.
   6 //
   7 //  Permission is hereby granted, free of charge, to any person obtaining a copy
   8 //  of this software and associated documentation files (the "Software"), to deal
   9 //  in the Software without restriction, including without limitation the rights
  10 //  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 //  copies of the Software, and to permit persons to whom the Software is
  12 //  furnished to do so, subject to the following conditions:
  13 //
  14 //  The above copyright notice and this permission notice shall be included in
  15 //  all copies or substantial portions of the Software.
  16 //
  17 //  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 //  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 //  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20 //  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 //  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 //  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  23 //  THE SOFTWARE.
  24
  25 #import "OAAsynchronousDataFetcher.h"
  26
  27 #import "OAServiceTicket.h"
  28
  29 @implementation OAAsynchronousDataFetcher
  30
  31 + (id)asynchronousFetcherWithRequest:(OAMutableURLRequest *)aRequest delegate:(id)aDelegate didFinishSelector:(SEL)finishSelector didFailSelector:(SEL)failSelector
  32 {
  33   return [[[OAAsynchronousDataFetcher alloc] initWithRequest:aRequest delegate:aDelegate didFinishSelector:finishSelector didFailSelector:failSelector] autorelease];
  34 }
  35
  36 - (id)initWithRequest:(OAMutableURLRequest *)aRequest delegate:(id)aDelegate didFinishSelector:(SEL)finishSelector didFailSelector:(SEL)failSelector
  37 {
  38   if (self = [super init])
  39   {
  40     request = [aRequest retain];
  41     delegate = aDelegate;
  42     didFinishSelector = finishSelector;
  43     didFailSelector = failSelector;
  44   }
  45   return self;
  46 }
  47
  48 - (void)start
  49 {
  50   [request prepare];
  51
  52   if (connection)
  53     [connection release];
  54
  55   connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
  56
  57   if (connection)
  58   {
  59     if (responseData)
  60       [responseData release];
  61     responseData = [[NSMutableData data] retain];
  62   }
  63   else
  64   {
  65     OAServiceTicket *ticket= [[OAServiceTicket alloc] initWithRequest:request
  66                                                              response:nil
  67                                                            didSucceed:NO];
  68     [delegate performSelector:didFailSelector
  69                    withObject:ticket
  70                    withObject:nil];
  71     [ticket release];
  72   }
  73 }
  74
  75 - (void)cancel
  76 {
  77   if (connection)
  78     [connection cancel];
  79 }
  80
  81 - (void)dealloc
  82 {
  83   if (request) [request release];
  84   if (connection) [connection release];
  85   if (response) [response release];
  86   if (responseData) [responseData release];
  87   [super dealloc];
  88 }
  89
  90 #pragma mark -
  91 #pragma mark NSURLConnection's delegate methods
  92
  93 - (void)connection:(NSURLConnection *)aConnection didReceiveResponse:(NSURLResponse *)aResponse
  94 {
  95   if (response)
  96     [response release];
  97   response = [aResponse retain];
  98   [responseData setLength:0];
  99 }
 100
 101 - (void)connection:(NSURLConnection *)aConnection didReceiveData:(NSData *)data
 102 {
 103   [responseData appendData:data];
 104 }
 105
 106 - (void)connection:(NSURLConnection *)aConnection didFailWithError:(NSError *)error
 107 {
 108   OAServiceTicket *ticket= [[OAServiceTicket alloc] initWithRequest:request
 109                                                            response:response
 110                                                          didSucceed:NO];
 111   [delegate performSelector:didFailSelector
 112                  withObject:ticket
 113                  withObject:error];
 114
 115   [ticket release];
 116 }
 117
 118 - (void)connectionDidFinishLoading:(NSURLConnection *)aConnection
 119 {
 120   OAServiceTicket *ticket = [[OAServiceTicket alloc] initWithRequest:request
 121                                                             response:response
 122                                                           didSucceed:[(NSHTTPURLResponse *)response statusCode] < 400];
 123   [delegate performSelector:didFinishSelector
 124                  withObject:ticket
 125                  withObject:responseData];
 126
 127   [ticket release];
 128 }
 129
 130 @end
 131