//
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// CryptoSwift
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//
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// Copyright (C) 2014-2022 Marcin Krzyżanowski <marcin@krzyzanowskim.com>
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// This software is provided 'as-is', without any express or implied warranty.
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//
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// In no event will the authors be held liable for any damages arising from the use of this software.
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//
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// Permission is granted to anyone to use this software for any purpose,including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:
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//
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// - The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation is required.
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// - Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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// - This notice may not be removed or altered from any source or binary distribution.
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//
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#if canImport(Darwin)
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import Darwin
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#elseif canImport(Glibc)
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import Glibc
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#elseif canImport(ucrt)
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import ucrt
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#endif
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public protocol _UInt8Type {}
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extension UInt8: _UInt8Type {}
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/** casting */
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extension UInt8 {
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/** cast because UInt8(<UInt32>) because std initializer crash if value is > byte */
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static func with(value: UInt64) -> UInt8 {
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let tmp = value & 0xff
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return UInt8(tmp)
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}
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static func with(value: UInt32) -> UInt8 {
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let tmp = value & 0xff
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return UInt8(tmp)
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}
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static func with(value: UInt16) -> UInt8 {
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let tmp = value & 0xff
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return UInt8(tmp)
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}
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}
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/** Bits */
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extension UInt8 {
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/** array of bits */
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public func bits() -> [Bit] {
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let totalBitsCount = MemoryLayout<UInt8>.size * 8
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var bitsArray = [Bit](repeating: Bit.zero, count: totalBitsCount)
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for j in 0..<totalBitsCount {
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let bitVal: UInt8 = 1 << UInt8(totalBitsCount - 1 - j)
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let check = self & bitVal
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if check != 0 {
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bitsArray[j] = Bit.one
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}
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}
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return bitsArray
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}
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public func bits() -> String {
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var s = String()
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let arr: [Bit] = self.bits()
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for idx in arr.indices {
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s += (arr[idx] == Bit.one ? "1" : "0")
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if idx.advanced(by: 1) % 8 == 0 { s += " " }
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}
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return s
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}
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}
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