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33 lines
1.1 KiB
Swift
33 lines
1.1 KiB
Swift
// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
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import Foundation
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public enum Format {
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private static let fileSizeFormatter: NumberFormatter = {
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let result: NumberFormatter = NumberFormatter()
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result.numberStyle = .decimal
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result.minimumFractionDigits = 0
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result.maximumFractionDigits = 1
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return result
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}()
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private static let oneKilobyte: Double = 1024;
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private static let oneMegabyte: Double = (oneKilobyte * oneKilobyte)
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public static func fileSize(_ fileSize: UInt) -> String {
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let fileSizeDouble: Double = Double(fileSize)
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switch fileSizeDouble {
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case oneMegabyte...Double.greatestFiniteMagnitude:
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return (Format.fileSizeFormatter
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.string(from: NSNumber(floatLiteral: (fileSizeDouble / oneMegabyte)))?
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.appending("MB") ?? "n/a")
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default:
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return (Format.fileSizeFormatter
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.string(from: NSNumber(floatLiteral: max(0.1, (fileSizeDouble / oneKilobyte))))?
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.appending("KB") ?? "n/a")
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}
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}
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}
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