Codacy compatibility (#575)

Refactor and split iostunnel with cmake changes, code cleanup

client/platforms/ios/Log.swift

@@ -13,59 +13,59 @@ struct Log {
   }
 
   private static let appGroupID = "group.org.amnezia.AmneziaVPN"
-  
+
   static let neLogURL = {
     let sharedContainerURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: appGroupID)!
     return sharedContainerURL.appendingPathComponent("ne.log", isDirectory: false)
   }()
-  
+
   private static var sharedUserDefaults = {
     UserDefaults(suiteName: appGroupID)!
   }()
-  
+
   static let dateFormatter: DateFormatter = {
-      let dateFormatter = DateFormatter()
-      dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
-      return dateFormatter
+    let dateFormatter = DateFormatter()
+    dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
+    return dateFormatter
   }()
 
   var records: [Record]
-  
+
   init() {
     self.records = []
   }
-  
+
   init(_ str: String) {
     self.records = str.split(whereSeparator: \.isNewline)
       .compactMap {
         Record(String($0))!
       }
   }
-  
+
   init?(at url: URL) {
     if !FileManager.default.fileExists(atPath: url.path) {
-      guard let _ = try? "".data(using: .utf8)?.write(to: url) else { return nil }
+      guard (try? "".data(using: .utf8)?.write(to: url)) != nil else { return nil }
     }
-    
+
     guard let fileHandle = try? FileHandle(forUpdating: url) else { return nil }
-    
+
     defer { fileHandle.closeFile() }
-    
+
     guard
       let data = try? fileHandle.readToEnd(),
       let str = String(data: data, encoding: .utf8) else {
       return nil
     }
-    
+
     self.init(str)
   }
-  
+
   static func clear(at url: URL) {
     if FileManager.default.fileExists(atPath: url.path) {
       guard let fileHandle = try? FileHandle(forUpdating: url) else { return }
-      
+
       defer { fileHandle.closeFile() }
-      
+
       try? fileHandle.truncate(atOffset: 0)
     }
   }