//

// CJSONDataSerializer.m

// TouchCode

//

// Created by Jonathan Wight on 12/07/2005.

// Copyright 2005 toxicsoftware.com. All rights reserved.

//

// 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 "CJSONDataSerializer.h"

#import "CSerializedJSONData.h"

static NSData *kNULL = NULL;

static NSData *kFalse = NULL;

static NSData *kTrue = NULL;

@implementation CJSONDataSerializer

+ (void)initialize

{

NSAutoreleasePool *thePool = [[NSAutoreleasePool alloc] init];

@synchronized(@"CJSONDataSerializer")

{

if (kNULL == NULL)

kNULL = [[NSData alloc] initWithBytesNoCopy:"null" length:4 freeWhenDone:NO];

if (kFalse == NULL)

kFalse = [[NSData alloc] initWithBytesNoCopy:"false" length:5 freeWhenDone:NO];

if (kTrue == NULL)

kTrue = [[NSData alloc] initWithBytesNoCopy:"true" length:4 freeWhenDone:NO];

}

[thePool release];

}

+ (id)serializer

{

return([[[self alloc] init] autorelease]);

}

- (NSData *)serializeObject:(id)inObject error:(NSError **)outError

{

NSData *theResult = NULL;

if ([inObject isKindOfClass:[NSNull class]])

{

theResult = [self serializeNull:inObject error:outError];

}

else if ([inObject isKindOfClass:[NSNumber class]])

{

theResult = [self serializeNumber:inObject error:outError];

}

else if ([inObject isKindOfClass:[NSString class]])

{

theResult = [self serializeString:inObject error:outError];

}

else if ([inObject isKindOfClass:[NSArray class]])

{

theResult = [self serializeArray:inObject error:outError];

}

else if ([inObject isKindOfClass:[NSDictionary class]])

{

theResult = [self serializeDictionary:inObject error:outError];

}

else if ([inObject isKindOfClass:[NSData class]])

{

NSString *theString = [[[NSString alloc] initWithData:inObject encoding:NSUTF8StringEncoding] autorelease];

theResult = [self serializeString:theString error:outError];

}

else if ([inObject isKindOfClass:[CSerializedJSONData class]])

{

theResult = [inObject data];

}

else

{

if (outError)

{

NSDictionary *theUserInfo = [NSDictionary dictionaryWithObjectsAndKeys:

[NSString stringWithFormat:@"Cannot serialize data of type '%@'", NSStringFromClass([inObject class])], NSLocalizedDescriptionKey,

NULL];

*outError = [NSError errorWithDomain:@"TODO_DOMAIN" code:-1 userInfo:theUserInfo];

}

return(NULL);

}

if (theResult == NULL)

{

if (outError)

{

NSDictionary *theUserInfo = [NSDictionary dictionaryWithObjectsAndKeys:

[NSString stringWithFormat:@"Could not serialize object '%@'", inObject], NSLocalizedDescriptionKey,

NULL];

*outError = [NSError errorWithDomain:@"TODO_DOMAIN" code:-1 userInfo:theUserInfo];

}

return(NULL);

}

return(theResult);

}

- (NSData *)serializeNull:(NSNull *)inNull error:(NSError **)outError

{

#pragma unused (inNull)

return(kNULL);

}

- (NSData *)serializeNumber:(NSNumber *)inNumber error:(NSError **)outError

{

NSData *theResult = NULL;

switch (CFNumberGetType((CFNumberRef)inNumber))

{

case kCFNumberCharType:

{

int theValue = [inNumber intValue];

if (theValue == 0)

theResult = kFalse;

else if (theValue == 1)

theResult = kTrue;

else

theResult = [[inNumber stringValue] dataUsingEncoding:NSASCIIStringEncoding];

}

break;

case kCFNumberFloat32Type:

case kCFNumberFloat64Type:

case kCFNumberFloatType:

case kCFNumberDoubleType:

case kCFNumberSInt8Type:

case kCFNumberSInt16Type:

case kCFNumberSInt32Type:

case kCFNumberSInt64Type:

case kCFNumberShortType:

case kCFNumberIntType:

case kCFNumberLongType:

case kCFNumberLongLongType:

case kCFNumberCFIndexType:

default:

theResult = [[inNumber stringValue] dataUsingEncoding:NSASCIIStringEncoding];

break;

}

return(theResult);

}

- (NSData *)serializeString:(NSString *)inString error:(NSError **)outError

{

NSMutableString *theMutableCopy = [[inString mutableCopy] autorelease];

[theMutableCopy replaceOccurrencesOfString:@"\\" withString:@"\\\\" options:0 range:NSMakeRange(0, [theMutableCopy length])];

[theMutableCopy replaceOccurrencesOfString:@"\"" withString:@"\\\"" options:0 range:NSMakeRange(0, [theMutableCopy length])];

[theMutableCopy replaceOccurrencesOfString:@"/" withString:@"\\/" options:0 range:NSMakeRange(0, [theMutableCopy length])];

[theMutableCopy replaceOccurrencesOfString:@"\b" withString:@"\\b" options:0 range:NSMakeRange(0, [theMutableCopy length])];

[theMutableCopy replaceOccurrencesOfString:@"\f" withString:@"\\f" options:0 range:NSMakeRange(0, [theMutableCopy length])];

[theMutableCopy replaceOccurrencesOfString:@"\n" withString:@"\\n" options:0 range:NSMakeRange(0, [theMutableCopy length])];

[theMutableCopy replaceOccurrencesOfString:@"\r" withString:@"\\r" options:0 range:NSMakeRange(0, [theMutableCopy length])];

[theMutableCopy replaceOccurrencesOfString:@"\t" withString:@"\\t" options:0 range:NSMakeRange(0, [theMutableCopy length])];

/*

case 'u':

{

theCharacter = 0;

int theShift;

for (theShift = 12; theShift >= 0; theShift -= 4)

{

int theDigit = HexToInt([self scanCharacter]);

if (theDigit == -1)

{

[self setScanLocation:theScanLocation];

return(NO);

}

theCharacter |= (theDigit << theShift);

}

}

*/

return([[NSString stringWithFormat:@"\"%@\"", theMutableCopy] dataUsingEncoding:NSUTF8StringEncoding]);

}

- (NSData *)serializeArray:(NSArray *)inArray error:(NSError **)outError

{

NSMutableData *theData = [NSMutableData data];

[theData appendBytes:"[" length:1];

NSEnumerator *theEnumerator = [inArray objectEnumerator];

id theValue = NULL;

NSUInteger i = 0;

while ((theValue = [theEnumerator nextObject]) != NULL)

{

NSData *theValueData = [self serializeObject:theValue error:outError];

if (theValueData == NULL)

{

return(NULL);

}

[theData appendData:theValueData];

if (++i < [inArray count])

[theData appendBytes:"," length:1];

}

[theData appendBytes:"]" length:1];

return(theData);

}

- (NSData *)serializeDictionary:(NSDictionary *)inDictionary error:(NSError **)outError

{

NSMutableData *theData = [NSMutableData data];

[theData appendBytes:"{" length:1];

NSArray *theKeys = [inDictionary allKeys];

NSEnumerator *theEnumerator = [theKeys objectEnumerator];

NSString *theKey = NULL;

while ((theKey = [theEnumerator nextObject]) != NULL)

{

id theValue = [inDictionary objectForKey:theKey];

NSData *theKeyData = [self serializeString:theKey error:outError];

if (theKeyData == NULL)

{

return(NULL);

}

NSData *theValueData = [self serializeObject:theValue error:outError];

if (theValueData == NULL)

{

return(NULL);

}

[theData appendData:theKeyData];

[theData appendBytes:":" length:1];

[theData appendData:theValueData];

if (theKey != [theKeys lastObject])

[theData appendData:[@"," dataUsingEncoding:NSASCIIStringEncoding]];

}

[theData appendBytes:"}" length:1];

return(theData);

}

@end