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// AFJSONUtilities.m
//
// Copyright (c) 2011 Gowalla (http://gowalla.com/)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
#import "AFJSONUtilities.h"
NSData * AFJSONEncode(id object, NSError **error) {
NSData *data = nil;
SEL _JSONKitSelector = NSSelectorFromString(@"JSONDataWithOptions:error:");
SEL _YAJLSelector = NSSelectorFromString(@"yajl_JSONString");
id _SBJsonWriterClass = NSClassFromString(@"SBJsonWriter");
SEL _SBJsonWriterSelector = NSSelectorFromString(@"dataWithObject:");
id _NXJsonSerializerClass = NSClassFromString(@"NXJsonSerializer");
SEL _NXJsonSerializerSelector = NSSelectorFromString(@"serialize:");
id _NSJSONSerializationClass = NSClassFromString(@"NSJSONSerialization");
SEL _NSJSONSerializationSelector = NSSelectorFromString(@"dataWithJSONObject:options:error:");
#ifdef _AFNETWORKING_PREFER_NSJSONSERIALIZATION_
if (_NSJSONSerializationClass && [_NSJSONSerializationClass respondsToSelector:_NSJSONSerializationSelector]) {
goto _af_nsjson_encode;
}
#endif
if (_JSONKitSelector && [object respondsToSelector:_JSONKitSelector]) {
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[object methodSignatureForSelector:_JSONKitSelector]];
invocation.target = object;
invocation.selector = _JSONKitSelector;
NSUInteger serializeOptionFlags = 0;
[invocation setArgument:&serializeOptionFlags atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation
if (error != NULL) {
[invocation setArgument:error atIndex:3];
}
[invocation invoke];
[invocation getReturnValue:&data];
} else if (_SBJsonWriterClass && [_SBJsonWriterClass instancesRespondToSelector:_SBJsonWriterSelector]) {
id writer = [[_SBJsonWriterClass alloc] init];
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[writer methodSignatureForSelector:_SBJsonWriterSelector]];
invocation.target = writer;
invocation.selector = _SBJsonWriterSelector;
[invocation setArgument:&object atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation
[invocation invoke];
[invocation getReturnValue:&data];
[writer release];
} else if (_YAJLSelector && [object respondsToSelector:_YAJLSelector]) {
@try {
NSString *JSONString = nil;
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[object methodSignatureForSelector:_YAJLSelector]];
invocation.target = object;
invocation.selector = _YAJLSelector;
[invocation invoke];
[invocation getReturnValue:&JSONString];
data = [JSONString dataUsingEncoding:NSUTF8StringEncoding];
}
@catch (NSException *exception) {
*error = [[[NSError alloc] initWithDomain:NSStringFromClass([exception class]) code:0 userInfo:[exception userInfo]] autorelease];
}
} else if (_NXJsonSerializerClass && [_NXJsonSerializerClass respondsToSelector:_NXJsonSerializerSelector]) {
NSString *JSONString = nil;
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[_NXJsonSerializerClass methodSignatureForSelector:_NXJsonSerializerSelector]];
invocation.target = _NXJsonSerializerClass;
invocation.selector = _NXJsonSerializerSelector;
[invocation setArgument:&object atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation
[invocation invoke];
[invocation getReturnValue:&JSONString];
data = [JSONString dataUsingEncoding:NSUTF8StringEncoding];
} else if (_NSJSONSerializationClass && [_NSJSONSerializationClass respondsToSelector:_NSJSONSerializationSelector]) {
#ifdef _AFNETWORKING_PREFER_NSJSONSERIALIZATION_
_af_nsjson_encode:;
#endif
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[_NSJSONSerializationClass methodSignatureForSelector:_NSJSONSerializationSelector]];
invocation.target = _NSJSONSerializationClass;
invocation.selector = _NSJSONSerializationSelector;
[invocation setArgument:&object atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation
NSUInteger writeOptions = 0;
[invocation setArgument:&writeOptions atIndex:3];
if (error != NULL) {
[invocation setArgument:error atIndex:4];
}
[invocation invoke];
[invocation getReturnValue:&data];
} else {
NSDictionary *userInfo = [NSDictionary dictionaryWithObject:NSLocalizedString(@"Please either target a platform that supports NSJSONSerialization or add one of the following libraries to your project: JSONKit, SBJSON, or YAJL", nil) forKey:NSLocalizedRecoverySuggestionErrorKey];
[[NSException exceptionWithName:NSInternalInconsistencyException reason:NSLocalizedString(@"No JSON generation functionality available", nil) userInfo:userInfo] raise];
}
return data;
}
id AFJSONDecode(NSData *data, NSError **error) {
id JSON = nil;
SEL _JSONKitSelector = NSSelectorFromString(@"objectFromJSONDataWithParseOptions:error:");
SEL _YAJLSelector = NSSelectorFromString(@"yajl_JSONWithOptions:error:");
id _SBJSONParserClass = NSClassFromString(@"SBJsonParser");
SEL _SBJSONParserSelector = NSSelectorFromString(@"objectWithData:");
id _NSJSONSerializationClass = NSClassFromString(@"NSJSONSerialization");
SEL _NSJSONSerializationSelector = NSSelectorFromString(@"JSONObjectWithData:options:error:");
id _NXJsonParserClass = NSClassFromString(@"NXJsonParser");
SEL _NXJsonParserSelector = NSSelectorFromString(@"parseData:error:ignoreNulls:");
#ifdef _AFNETWORKING_PREFER_NSJSONSERIALIZATION_
if (_NSJSONSerializationClass && [_NSJSONSerializationClass respondsToSelector:_NSJSONSerializationSelector]) {
goto _af_nsjson_decode;
}
#endif
if (_JSONKitSelector && [data respondsToSelector:_JSONKitSelector]) {
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[data methodSignatureForSelector:_JSONKitSelector]];
invocation.target = data;
invocation.selector = _JSONKitSelector;
NSUInteger parseOptionFlags = 0;
[invocation setArgument:&parseOptionFlags atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation
if (error != NULL) {
[invocation setArgument:&error atIndex:3];
}
[invocation invoke];
[invocation getReturnValue:&JSON];
} else if (_SBJSONParserClass && [_SBJSONParserClass instancesRespondToSelector:_SBJSONParserSelector]) {
id parser = [[_SBJSONParserClass alloc] init];
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[parser methodSignatureForSelector:_SBJSONParserSelector]];
invocation.target = parser;
invocation.selector = _SBJSONParserSelector;
[invocation setArgument:&data atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation
[invocation invoke];
[invocation getReturnValue:&JSON];
[parser release];
} else if (_YAJLSelector && [data respondsToSelector:_YAJLSelector]) {
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[data methodSignatureForSelector:_YAJLSelector]];
invocation.target = data;
invocation.selector = _YAJLSelector;
NSUInteger yajlParserOptions = 0;
[invocation setArgument:&yajlParserOptions atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation
if (error != NULL) {
[invocation setArgument:&error atIndex:3];
}
[invocation invoke];
[invocation getReturnValue:&JSON];
} else if (_NXJsonParserClass && [_NXJsonParserClass respondsToSelector:_NXJsonParserSelector]) {
NSNumber *nullOption = [NSNumber numberWithBool:YES];
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[_NXJsonParserClass methodSignatureForSelector:_NXJsonParserSelector]];
invocation.target = _NXJsonParserClass;
invocation.selector = _NXJsonParserSelector;
[invocation setArgument:&data atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation
if (error != NULL) {
[invocation setArgument:&error atIndex:3];
}
[invocation setArgument:&nullOption atIndex:4];
[invocation invoke];
[invocation getReturnValue:&JSON];
} else if (_NSJSONSerializationClass && [_NSJSONSerializationClass respondsToSelector:_NSJSONSerializationSelector]) {
#ifdef _AFNETWORKING_PREFER_NSJSONSERIALIZATION_
_af_nsjson_decode:;
#endif
NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[_NSJSONSerializationClass methodSignatureForSelector:_NSJSONSerializationSelector]];
invocation.target = _NSJSONSerializationClass;
invocation.selector = _NSJSONSerializationSelector;
[invocation setArgument:&data atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation
NSUInteger readOptions = 0;
[invocation setArgument:&readOptions atIndex:3];
if (error != NULL) {
[invocation setArgument:&error atIndex:4];
}
[invocation invoke];
[invocation getReturnValue:&JSON];
} else {
NSDictionary *userInfo = [NSDictionary dictionaryWithObject:NSLocalizedString(@"Please either target a platform that supports NSJSONSerialization or add one of the following libraries to your project: JSONKit, SBJSON, or YAJL", nil) forKey:NSLocalizedRecoverySuggestionErrorKey];
[[NSException exceptionWithName:NSInternalInconsistencyException reason:NSLocalizedString(@"No JSON parsing functionality available", nil) userInfo:userInfo] raise];
}
return JSON;
}
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