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19 lines
422 B
Swift
19 lines
422 B
Swift
//
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// String+Base64.swift
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// WireGuard
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//
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// Created by Eric Kuck on 8/15/18.
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// Copyright © 2018 WireGuard LLC. All rights reserved.
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//
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import Foundation
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extension String {
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func isBase64() -> Bool {
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let base64Predicate = NSPredicate(format: "SELF MATCHES %@", "^([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$")
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return base64Predicate.evaluate(with: self)
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}
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}
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