mirror of
https://github.com/tsolomko/SWCompression.git
synced 2026-06-23 14:56:41 +00:00
Timofey Solomko
86 lines
1.7 KiB
Swift
86 lines
1.7 KiB
Swift
// Copyright (c) 2017 Timofey Solomko
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// Licensed under MIT License
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//
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// See LICENSE for license information
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import Foundation
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extension Data {
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func to<T>(type: T.Type) -> T {
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return self.withUnsafeBytes { $0.pointee }
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}
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func toArray<T>(type: T.Type) -> [T] {
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return self.withUnsafeBytes {
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[T](UnsafeBufferPointer(start: $0, count: self.count / MemoryLayout<T>.size))
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}
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}
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}
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extension UInt8 {
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func toInt() -> Int {
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return Int(bitPattern: UInt(self))
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}
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}
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extension UInt16 {
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func toInt() -> Int {
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return Int(bitPattern: UInt(self))
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}
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}
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extension UInt32 {
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func toInt() -> Int {
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return Int(bitPattern: UInt(self))
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}
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func reverseBytes() -> UInt32 {
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var result: UInt32 = 0
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for i: UInt32 in 0..<4 {
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let byte = (self & (0xFF << (i * 8))) >> (i * 8)
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result += byte << (8 * (3 - i))
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}
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return result
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}
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}
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extension UInt64 {
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func toInt() -> Int {
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return Int(bitPattern: UInt(self))
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}
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}
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extension Int {
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func toUInt8() -> UInt8 {
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return UInt8(truncatingBitPattern: UInt(self))
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}
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}
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extension Date {
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init?(from ntfsTime: UInt64?) {
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if let time = ntfsTime,
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let ntfsStartDate = DateComponents(calendar: Calendar(identifier: .iso8601),
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timeZone: TimeZone(abbreviation: "UTC"),
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year: 1601, month: 1, day: 1,
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hour: 0, minute: 0, second: 0).date {
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self.init(timeInterval: TimeInterval(time) / 10_000_000, since: ntfsStartDate)
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} else {
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return nil
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}
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}
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}
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