42 lines
1.7 KiB
Swift
42 lines
1.7 KiB
Swift
//
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// The MIT License (MIT)
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//
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// Copyright (c) 2023 Ihar Katkavets
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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import Foundation
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extension Data {
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init(fromHex str: String) {
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let stippedSpaces = str.filter { $0 != " " }.map { $0 }
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let pairs = stride(from: 0, to: stippedSpaces.endIndex, by: 2)
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.map { (stippedSpaces[$0], $0 < stippedSpaces.index(before: stippedSpaces.endIndex) ? stippedSpaces[$0.advanced(by: 1)] : nil) }
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let array: [UInt8] = pairs.compactMap { pair in
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let string = String(format: "%@%@", "\(pair.0)", pair.1 != nil ? "\(pair.1!)":"")
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let byte = UInt8(string, radix: 16)
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return byte
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}
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self = Data(array)
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}
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}
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