/*

    Copyright (C) 2016 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    Implements Base64 encoding.

 */

#import "QCCBase64Encode.h"

NS_ASSUME_NONNULL_BEGIN

@interface QCCBase64Encode ()

// read/write versions of public properties

@property (atomic, copy,   readwrite, nullable) NSString *      outputString;

@end

NS_ASSUME_NONNULL_END

@implementation QCCBase64Encode

- (instancetype)init {

    abort();

}

- (instancetype)initWithInputData:(NSData *)inputData {

    NSParameterAssert(inputData != nil);

    self = [super init];

    if (self != nil) {

        self->_inputData = [inputData copy];

    }

    return self;

}

- (void)main {

    NSDataBase64EncodingOptions options;

    NSString * output;

    options = NSDataBase64EncodingEndLineWithLineFeed;

    if (self.addLineBreaks) {

        options |= NSDataBase64Encoding64CharacterLineLength; 

    }

    output = [self.inputData base64EncodedStringWithOptions:options];

    // Our old code use to always add a trailing LF unless the input was empty, 

    // and our unit test relies on that, so we replicate it here.  

    if ( (output.length > 0) && ! [output hasSuffix:@"\n"] ) {

        output = [output stringByAppendingString:@"\n"];

    }

    self.outputString = output;

}

@end