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MasterPassword/External/google-plus-ios-sdk/OpenSource/GTL/GTLJSONParser.m

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/* Copyright (c) 2011 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//
// GTLJSONParser.m
//
#import "GTLJSONParser.h"
// We can assume NSJSONSerialization is present on Mac OS X 10.7 and iOS 5
#if !defined(GTL_REQUIRES_NSJSONSERIALIZATION)
#if (!TARGET_OS_IPHONE && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1070)) || \
(TARGET_OS_IPHONE && (__IPHONE_OS_VERSION_MIN_REQUIRED >= 50000))
#define GTL_REQUIRES_NSJSONSERIALIZATION 1
#endif
#endif
// If GTMNSJSONSerialization is available, it is used for parsing and
// formatting JSON
#if !GTL_REQUIRES_NSJSONSERIALIZATION
@interface GTMNSJSONSerialization : NSObject
+ (NSData *)dataWithJSONObject:(id)obj options:(NSUInteger)opt error:(NSError **)error;
+ (id)JSONObjectWithData:(NSData *)data options:(NSUInteger)opt error:(NSError **)error;
@end
// As a fallback, SBJSON is used for parsing and formatting JSON
@interface GTLSBJSON
- (void)setHumanReadable:(BOOL)flag;
- (NSString*)stringWithObject:(id)value error:(NSError**)error;
- (id)objectWithString:(NSString*)jsonrep error:(NSError**)error;
@end
#endif // !GTL_REQUIRES_NSJSONSERIALIZATION
@implementation GTLJSONParser
#if DEBUG && !GTL_REQUIRES_NSJSONSERIALIZATION
// When compiling for iOS 4 compatibility, SBJSON must be available
+ (void)load {
Class writer = NSClassFromString(@"SBJsonWriter");
Class parser = NSClassFromString(@"SBJsonParser");
Class oldParser = NSClassFromString(@"SBJSON");
GTL_ASSERT((oldParser != Nil)
|| (writer != Nil && parser != Nil),
@"No parsing class found");
}
#endif // DEBUG && !GTL_REQUIRES_NSJSONSERIALIZATION
+ (NSString*)stringWithObject:(id)obj
humanReadable:(BOOL)humanReadable
error:(NSError**)error {
NSData *data = [self dataWithObject:obj
humanReadable:humanReadable
error:error];
if (data) {
NSString *jsonStr = [[[NSString alloc] initWithData:data
encoding:NSUTF8StringEncoding] autorelease];
return jsonStr;
}
return nil;
}
+ (NSData *)dataWithObject:(id)obj
humanReadable:(BOOL)humanReadable
error:(NSError**)error {
const NSUInteger kOpts = humanReadable ? (1UL << 0) : 0; // NSJSONWritingPrettyPrinted
#if GTL_REQUIRES_NSJSONSERIALIZATION
NSData *data = [NSJSONSerialization dataWithJSONObject:obj
options:kOpts
error:error];
return data;
#else
Class serializer = NSClassFromString(@"NSJSONSerialization");
if (serializer) {
NSData *data = [serializer dataWithJSONObject:obj
options:kOpts
error:error];
return data;
} else {
Class jsonWriteClass = NSClassFromString(@"SBJsonWriter");
if (!jsonWriteClass) {
jsonWriteClass = NSClassFromString(@"SBJSON");
}
if (error) *error = nil;
GTLSBJSON *writer = [[[jsonWriteClass alloc] init] autorelease];
[writer setHumanReadable:humanReadable];
NSString *jsonStr = [writer stringWithObject:obj
error:error];
NSData *data = [jsonStr dataUsingEncoding:NSUTF8StringEncoding];
return data;
}
#endif
}
+ (id)objectWithString:(NSString *)jsonStr
error:(NSError **)error {
NSData *data = [jsonStr dataUsingEncoding:NSUTF8StringEncoding];
return [self objectWithData:data
error:error];
}
+ (id)objectWithData:(NSData *)jsonData
error:(NSError **)error {
#if GTL_REQUIRES_NSJSONSERIALIZATION
NSMutableDictionary *obj = [NSJSONSerialization JSONObjectWithData:jsonData
options:NSJSONReadingMutableContainers
error:error];
return obj;
#else
Class serializer = NSClassFromString(@"NSJSONSerialization");
if (serializer) {
const NSUInteger kOpts = (1UL << 0); // NSJSONReadingMutableContainers
NSMutableDictionary *obj = [serializer JSONObjectWithData:jsonData
options:kOpts
error:error];
return obj;
} else {
Class jsonParseClass = NSClassFromString(@"SBJsonParser");
if (!jsonParseClass) {
jsonParseClass = NSClassFromString(@"SBJSON");
}
if (error) *error = nil;
GTLSBJSON *parser = [[[jsonParseClass alloc] init] autorelease];
NSString *jsonrep = [[[NSString alloc] initWithData:jsonData
encoding:NSUTF8StringEncoding] autorelease];
id obj = [parser objectWithString:jsonrep
error:error];
return obj;
}
#endif
}
@end