Format account token in Account view

1 files changed, 22 insertions, 0 deletions

diff --git a/ios/MullvadVPN/String+Split.swift b/ios/MullvadVPN/String+Split.swift
new file mode 100644
index 0000000000..82352280fc
--- /dev/null
+++ b/ios/MullvadVPN/String+Split.swift
@@ -0,0 +1,22 @@
+//
+//  String+Split.swift
+//  MullvadVPN
+//
+//  Created by pronebird on 27/03/2020.
+//  Copyright © 2020 Mullvad VPN AB. All rights reserved.
+//
+
+import Foundation
+
+extension String {
+
+    /// Returns the array of the longest possible subsequences of the given length.
+    func split(every length: Int) -> [Substring] {
+        guard length > 0 else { return [prefix(upTo: endIndex)] }
+
+        let resultCount = Int((Float(count) / Float(length)).rounded(.up))
+
+        return (0 ..< resultCount)
+            .map { dropFirst($0 * length).prefix(length) }
+    }
+}