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//
// NSString+DTUtilities.m
// DTFoundation
//
// Created by Oliver Drobnik on 4/16/12.
// Copyright (c) 2012 Cocoanetics. All rights reserved.
//

#import "NSString+DTUtilities.h"

#import <CommonCrypto/CommonDigest.h>

// force this category to be loaded by linker
MAKE_CATEGORIES_LOADABLE(NSString_DTUtilites);

@implementation NSString (DTUtilities)

+ (NSString *)stringWithUUID
{
CFUUIDRef uuidObj = CFUUIDCreate(nil);//create a new UUID

//get the string representation of the UUID
NSString *uuidString = (__bridge_transfer NSString *)CFUUIDCreateString(nil, uuidObj);

CFRelease(uuidObj);
return uuidString;
}

- (NSString *)md5Checksum
{
const char *cStr = [self UTF8String];
unsigned char result [CC_MD5_DIGEST_LENGTH];
CC_MD5( cStr, (CC_LONG)strlen(cStr), result );

return [NSString stringWithFormat: @"%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",
result[0], result[1],
result[2], result[3],
result[4], result[5],
result[6], result[7],
result[8], result[9],
result[10], result[11],
result[12], result[13],
result[14], result[15]
];
}

@end
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