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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" | ||
|
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| NSData * AFJSONEncode(id object, NSError **error) { | ||
| NSData *data = nil; | ||
|
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| SEL _JSONKitSelector = NSSelectorFromString(@"JSONDataWithOptions:error:"); | ||
| SEL _SBJSONSelector = NSSelectorFromString(@"JSONRepresentation"); | ||
| SEL _YAJLSelector = NSSelectorFromString(@"yajl_JSONString"); | ||
|
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| id _NSJSONSerializationClass = NSClassFromString(@"NSJSONSerialization"); | ||
| SEL _NSJSONSerializationSelector = NSSelectorFromString(@"dataWithJSONObject:options:error:"); | ||
|
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| #ifdef _AFNETWORKING_PREFER_NSJSONSERIALIZATION_ | ||
| if (_NSJSONSerializationClass && [_NSJSONSerializationClass respondsToSelector:_NSJSONSerializationSelector]) { | ||
| goto _af_nsjson_encode; | ||
| } | ||
| #endif | ||
|
|
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| if (_JSONKitSelector && [object respondsToSelector:_JSONKitSelector]) { | ||
| NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[object methodSignatureForSelector:_JSONKitSelector]]; | ||
| invocation.target = object; | ||
| invocation.selector = _JSONKitSelector; | ||
|
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| NSUInteger serializeOptionFlags = 0; | ||
| [invocation setArgument:&serializeOptionFlags atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation | ||
| [invocation setArgument:error atIndex:3]; | ||
|
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| [invocation invoke]; | ||
| [invocation getReturnValue:&data]; | ||
| } else if (_SBJSONSelector && [object respondsToSelector:_SBJSONSelector]) { | ||
| NSString *JSONString = nil; | ||
| NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[object methodSignatureForSelector:_SBJSONSelector]]; | ||
| invocation.target = object; | ||
| invocation.selector = _SBJSONSelector; | ||
|
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| [invocation invoke]; | ||
| [invocation getReturnValue:&JSONString]; | ||
|
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| data = [JSONString dataUsingEncoding:NSUTF8StringEncoding]; | ||
| } else if (_YAJLSelector && [object respondsToSelector:_YAJLSelector]) { | ||
| @try { | ||
| NSString *JSONString = nil; | ||
| NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[object methodSignatureForSelector:_YAJLSelector]]; | ||
| invocation.target = object; | ||
| invocation.selector = _YAJLSelector; | ||
|
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| [invocation invoke]; | ||
| [invocation getReturnValue:&JSONString]; | ||
|
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| data = [JSONString dataUsingEncoding:NSUTF8StringEncoding]; | ||
| } | ||
| @catch (NSException *exception) { | ||
| *error = [[[NSError alloc] initWithDomain:NSStringFromClass([exception class]) code:0 userInfo:[exception userInfo]] autorelease]; | ||
| } | ||
| } 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; | ||
|
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| [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]; | ||
| [invocation setArgument:error atIndex:4]; | ||
|
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| [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]; | ||
| } | ||
|
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| return data; | ||
| } | ||
|
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| id AFJSONDecode(NSData *data, NSError **error) { | ||
| id JSON = nil; | ||
|
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| SEL _JSONKitSelector = NSSelectorFromString(@"objectFromJSONDataWithParseOptions:error:"); | ||
| SEL _SBJSONSelector = NSSelectorFromString(@"JSONValue"); | ||
| SEL _YAJLSelector = NSSelectorFromString(@"yajl_JSONWithOptions:error:"); | ||
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| id _NSJSONSerializationClass = NSClassFromString(@"NSJSONSerialization"); | ||
| SEL _NSJSONSerializationSelector = NSSelectorFromString(@"JSONObjectWithData:options:error:"); | ||
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| #ifdef _AFNETWORKING_PREFER_NSJSONSERIALIZATION_ | ||
| if (_NSJSONSerializationClass && [_NSJSONSerializationClass respondsToSelector:_NSJSONSerializationSelector]) { | ||
| goto _af_nsjson_decode; | ||
| } | ||
| #endif | ||
|
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| if (_JSONKitSelector && [data respondsToSelector:_JSONKitSelector]) { | ||
| NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[data methodSignatureForSelector:_JSONKitSelector]]; | ||
| invocation.target = data; | ||
| invocation.selector = _JSONKitSelector; | ||
|
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| NSUInteger parseOptionFlags = 0; | ||
| [invocation setArgument:&parseOptionFlags atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation | ||
| [invocation setArgument:error atIndex:3]; | ||
|
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| [invocation invoke]; | ||
| [invocation getReturnValue:&JSON]; | ||
| } else if (_SBJSONSelector && [NSString instancesRespondToSelector:_SBJSONSelector]) { | ||
| // Create a string representation of JSON, to use SBJSON -`JSONValue` category method | ||
| NSString *string = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease]; | ||
| NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[string methodSignatureForSelector:_SBJSONSelector]]; | ||
| invocation.target = string; | ||
| invocation.selector = _SBJSONSelector; | ||
|
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| [invocation invoke]; | ||
| [invocation getReturnValue:&JSON]; | ||
| } else if (_YAJLSelector && [data respondsToSelector:_YAJLSelector]) { | ||
| NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:[data methodSignatureForSelector:_YAJLSelector]]; | ||
| invocation.target = data; | ||
| invocation.selector = _YAJLSelector; | ||
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| NSUInteger yajlParserOptions = 0; | ||
| [invocation setArgument:&yajlParserOptions atIndex:2]; // arguments 0 and 1 are self and _cmd respectively, automatically set by NSInvocation | ||
| [invocation setArgument:error atIndex:3]; | ||
|
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| [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; | ||
|
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| [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]; | ||
| [invocation setArgument:error atIndex:4]; | ||
|
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| [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]; | ||
| } | ||
|
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| return JSON; | ||
| } |
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