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IRWebAPIResponseParser.m
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IRWebAPIResponseParser.m
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//
// IRWebAPIResponseParser.m
// IRWebAPIKit
//
// Created by Evadne Wu on 1/29/11.
// Copyright 2011 Iridia Productions. All rights reserved.
//
#import "IRWebAPIResponseParser.h"
IRWebAPIResponseParser IRWebAPIResponseDefaultParserMake () {
// Simply tucks the returned data into a dictionary
NSDictionary * (^defaultParser) (NSData *) = ^ NSDictionary * (NSData *inData) {
return [NSDictionary dictionaryWithObjectsAndKeys:
inData, @"response",
[[[NSString alloc] initWithData:inData encoding:NSUTF8StringEncoding] autorelease], @"responseText",
nil];
};
return [[defaultParser copy] autorelease];
}
IRWebAPIResponseParser IRWebAPIResponseQueryResponseParserMake () {
// Parses UTF8 String Data Like:
//
// Key=URL_Encoded_Value
// Another_Key=Another_Encoded_Value
NSDictionary * (^queryResponseParser) (NSData *) = ^ NSDictionary * (NSData *inData) {
NSString *responseString = [[[NSString alloc] initWithData:inData encoding:NSUTF8StringEncoding] autorelease];
NSRegularExpression *expression = [NSRegularExpression regularExpressionWithPattern:@"([^=&\n\r]+)=([^=&\n\r]+)[\n\r&]?" options:NSRegularExpressionCaseInsensitive error:nil];
NSMutableDictionary *returnedResponse = [NSMutableDictionary dictionary];
@try {
[expression enumerateMatchesInString:responseString options:0 range:NSMakeRange(0, [responseString length]) usingBlock: ^ (NSTextCheckingResult *result, NSMatchingFlags flags, BOOL *stop) {
[returnedResponse setObject:[responseString substringWithRange:[result rangeAtIndex:2]] forKey:[responseString substringWithRange:[result rangeAtIndex:1]]];
}];
} @catch (NSException * e) {
NSLog(@"IRWebAPIResponseQueryResponseParser encountered an exception while parsing response. Returning empty dictionary.");
return [NSDictionary dictionary];
}
return returnedResponse;
};
return [[queryResponseParser copy] autorelease];
}
IRWebAPIResponseParser IRWebAPIResponseDefaultJSONParserMake () {
NSDictionary * (^defaultJSONParser) (NSData *) = ^ NSDictionary * (NSData *inData) {
Class classCJSONDeserializer = NSClassFromString(@"CJSONDeserializer");
if (!classCJSONDeserializer)
return nil;
if (![(NSObject *)classCJSONDeserializer respondsToSelector:@selector(deserializer)])
return nil;
id deserializer = [classCJSONDeserializer performSelector:@selector(deserializer)];
if (!deserializer)
return nil;
SEL selDeserialize = @selector(deserialize:error:);
if (![deserializer respondsToSelector:selDeserialize])
return nil;
id incomingObject;
NSError *error = nil;
NSError **errorPointer = &error;
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[deserializer methodSignatureForSelector:selDeserialize]];
[invocation setTarget:deserializer];
[invocation setSelector:selDeserialize];
[invocation setArgument:&inData atIndex:2];
[invocation setArgument:&errorPointer atIndex:3];
[invocation invoke];
[invocation getReturnValue:&incomingObject];
if (!incomingObject)
return nil;
if ([incomingObject isKindOfClass:[NSDictionary class]])
return (NSDictionary *)incomingObject;
return [NSDictionary dictionaryWithObject:incomingObject forKey:@"response"];
};
return [[defaultJSONParser copy] autorelease];
}