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26 lines
659 B
Objective-C
26 lines
659 B
Objective-C
//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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#import "NSData+hexString.h"
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@implementation NSData (hexString)
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- (NSString *)hexadecimalString {
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/* Returns hexadecimal string of NSData. Empty string if data is empty. */
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const unsigned char *dataBuffer = (const unsigned char *)[self bytes];
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if (!dataBuffer) {
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return @"";
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}
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NSUInteger dataLength = [self length];
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NSMutableString *hexString = [NSMutableString stringWithCapacity:(dataLength * 2)];
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for (NSUInteger i = 0; i < dataLength; ++i) {
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[hexString appendFormat:@"%02x", dataBuffer[i]];
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}
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return [hexString copy];
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}
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@end
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