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36 lines
1.3 KiB
Swift
36 lines
1.3 KiB
Swift
// This file is part of Kiwix for iOS & macOS.
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//
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// Kiwix is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 3 of the License, or
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// any later version.
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//
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// Kiwix is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Kiwix; If not, see https://www.gnu.org/licenses/.
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//
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// Languages.swift
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// Kiwix
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import Foundation
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enum LanguagesConverter {
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static func convert(codes: Set<String>, validCodes: Set<String>) -> Set<String> {
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let invalidCodes = codes.subtracting(validCodes)
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let validatedCodes = codes.intersection(validCodes)
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// try to convert from iso-2 to iso-3 format:
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let converted = invalidCodes.compactMap(Self.convertToAlpha3(from:))
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let convertedValidatedCodes = Set<String>(converted).intersection(validCodes)
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return validatedCodes.union(convertedValidatedCodes)
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}
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static func convertToAlpha3(from alpha2: String) -> String? {
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Locale.LanguageCode(alpha2).identifier(.alpha3)
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}
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}
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