wip on swift 5 update

Package.resolved

@@ -15,8 +15,8 @@
         "repositoryURL": "https://github.com/apple/swift-nio.git",
         "state": {
           "branch": null,
-          "revision": "4fb0cc68fee45d2ae714484b5979316943ef1f24",
-          "version": "1.0.0"
+          "revision": "ba7970fe396e8198b84c6c1b44b38a1d4e2eb6bd",
+          "version": "1.14.1"
         }
       },
       {

Sources/SwiftBncsLib/BnftpRequestComposer.swift

@@ -81,7 +81,7 @@ public struct Bnftp2SecondRequestComposer {
     private let localFiletime = 0 as UInt64
 
     let serverToken: UInt32
-    let clientToken = arc4random()
+    let clientToken = UInt32.random(in: .min ... .max)
     let filename: String
     let cdkey: String
 

Sources/SwiftBncsLib/FoundationDataExtension.swift

@@ -2,6 +2,14 @@ import Foundation
 
 extension Foundation.Data {
 
+    func getByte(at index: Int) -> UInt8 {
+        let data: UInt8 = self.subdata(in: index ..< (index + 1)).withUnsafeBytes { rawPointer in
+            rawPointer.bindMemory(to: UInt8.self).baseAddress!.pointee
+        }
+
+        return data
+    }
+
     public func arrayOfBytes() -> [UInt8] {
         let count = self.count / MemoryLayout<UInt8>.size
         var bytesArray = [UInt8](repeating: 0, count: count)

Sources/SwiftBncsLib/Messaging/BncsMessage.swift

@@ -17,12 +17,12 @@ public struct BncsMessage: Message, CustomDebugStringConvertible {
         }
 
         // Check sanity bit
-        guard 0xFF as UInt8 == data.withUnsafeBytes({ return $0[0] }) else {
+        guard 0xFF as UInt8 == data.getByte(at: 0) else {
             throw BncsMessageError.IllegalSanityByte
         }
 
         // Check length matches
-        guard data.count == data.withUnsafeBytes({ IntUtil.from8to16([$0[2], $0[3]]) }) else {
+      guard data.count == IntUtil.from8to16([data.getByte(at: 2), data.getByte(at: 3)]) else {
             throw BncsMessageError.IncorrectMessageLength
         }
 
@@ -33,7 +33,7 @@ public struct BncsMessage: Message, CustomDebugStringConvertible {
         // Check entire header is present -- precondition is fine here, guard is used in init
         precondition(data.count > 2)
 
-        let rawIdentifier: UInt8 = data.withUnsafeBytes { return $0[1] }
+        let rawIdentifier = data.getByte(at: 1)
         return BncsMessageIdentifier(rawValue: rawIdentifier) ?? .None
     }
 

Sources/SwiftBncsLib/Messaging/BnlsMessage.swift

@@ -16,7 +16,7 @@ public struct BnlsMessage: Message, CustomDebugStringConvertible {
         }
 
         // Check length matches
-        guard data.count == data.withUnsafeBytes({ IntUtil.from8to16([$0[0], $0[1]]) }) else {
+        guard data.count == IntUtil.from8to16([data.getByte(at: 0), data.getByte(at: 1)]) else {
             throw BnlsMessageError.IncorrectMessageLength
         }
 
@@ -27,7 +27,7 @@ public struct BnlsMessage: Message, CustomDebugStringConvertible {
         // Check entire header is present -- precondition is fine here, guard is used in init
         precondition(data.count > 3)
 
-        let rawIdentifier: UInt8 = data.withUnsafeBytes { return $0[2] }
+        let rawIdentifier = data.getByte(at: 2)
         return BnlsMessageIdentifier(rawValue: rawIdentifier) ?? .None
     }
 
@@ -36,5 +36,5 @@ public struct BnlsMessage: Message, CustomDebugStringConvertible {
     public var debugDescription: String {
         return "BnlsMessage (\(identifier)):\n\(data.hexDescription)"
     }
-    
+
 }

Sources/SwiftBncsLib/Messaging/MessageConsumer.swift

@@ -27,7 +27,7 @@ extension MessageConsumer {
     }
 
     public mutating func readUInt8() -> UInt8 {
-        let x: UInt8 = message.data.withUnsafeBytes({ return $0[readIndex] })
+        let x: UInt8 = message.data.getByte(at: readIndex)
         readIndex += 1
         return x
     }

Sources/SwiftBnftp/main.swift

@@ -40,7 +40,7 @@ func loadOptionsFromCommandLine() -> [String: String] {
 
 func createStreamPair(host: String, port: Int) -> (InputStream, OutputStream) {
     var inputStream: InputStream? = nil, outputStream: OutputStream? = nil
-    Foundation.Stream.getStreamsToHost(withName: host, port: port, inputStream: &inputStream, outputStream: &outputStream)
+    Stream.getStreamsToHost(withName: host, port: port, inputStream: &inputStream, outputStream: &outputStream)
     outputStream!.open()
     inputStream!.open()
     return (inputStream!, outputStream!)