NSData+Base64.m

/*
 *  NSData+Base64.h
 *  AQToolkit
 *
 *  Created by Jim Dovey on 31/8/2008.
 *
 *  Copyright (c) 2008-2009, Jim Dovey
 *  All rights reserved.
 *  
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *  Redistributions of source code must retain the above copyright notice,
 *  this list of conditions and the following disclaimer.
 *  
 *  Redistributions in binary form must reproduce the above copyright
 *  notice, this list of conditions and the following disclaimer in the
 *  documentation and/or other materials provided with the distribution.
 *  
 *  Neither the name of this project's author nor the names of its
 *  contributors may be used to endorse or promote products derived from
 *  this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
 *  FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *  HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 *  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 *  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
 *  LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
 *  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#import <Foundation/Foundation.h>
#import "NSData+Base64.h"
#import "b64.h"

@implementation NSData (Base64)

+ (NSData *) dataFromBase64String: (NSString *) base64String
{
    NSData * charData = [base64String dataUsingEncoding: NSUTF8StringEncoding];
    return ( b64_decode(charData) );
}

- (id) initWithBase64String: (NSString *) base64String
{
    NSData * charData = [base64String dataUsingEncoding: NSUTF8StringEncoding];
    NSData * result = [b64_decode(charData) retain];        // we'll return this with 1 extant retain count
    [self release];
    return ( result );
}

- (NSString *) base64EncodedString
{
    NSData * charData = b64_encode( self );
    return ( [[[NSString alloc] initWithData: charData encoding: NSUTF8StringEncoding] autorelease] );
}

@end