feat(Squirrel cli): add --ascii, --nascii and --getascii

sources/Main.swift

@@ -80,6 +80,37 @@ struct SquirrelApp {
         case "--sync":
           DistributedNotificationCenter.default().postNotificationName(.init("SquirrelSyncNotification"), object: nil)
           return true
+        case "--ascii":
+          DistributedNotificationCenter.default().postNotificationName(.init("SquirrelToggleASCIIModeNotification"), object: "ascii")
+          return true
+        case "--nascii":
+          DistributedNotificationCenter.default().postNotificationName(.init("SquirrelToggleASCIIModeNotification"), object: "nascii")
+          return true
+        case "--getascii":
+          var responseReceived = false
+          var asciiStatus = ""
+          let observer = DistributedNotificationCenter.default().addObserver(
+            forName: .init("SquirrelASCIIModeResponse"),
+            object: nil,
+            queue: .main
+          ) { notification in
+            if let status = notification.object as? String {
+              asciiStatus = status
+              responseReceived = true
+            }
+          }
+          DistributedNotificationCenter.default().postNotificationName(.init("SquirrelGetASCIIModeNotification"), object: nil)
+          let timeout = Date().addingTimeInterval(2.0)
+          while !responseReceived && Date() < timeout {
+            RunLoop.current.run(until: Date().addingTimeInterval(0.01))
+          }
+          DistributedNotificationCenter.default().removeObserver(observer)
+          if responseReceived {
+            print(asciiStatus)
+          } else {
+            print("nascii") 
+          }
+          return true
         case "--help":
           print(helpDoc)
           return true
@@ -139,6 +170,9 @@ Perform actions:
   --reload                   deploy
   --sync                     sync user data
   --build                    build all schemas in current directory
+  --ascii                    turn on ASCII mode
+  --nascii                   turn off ASCII mode
+  --getascii                 get current ASCII mode status
 Install Squirrel:
   --install, --register-input-source    register input source
   --enable-input-source [source id...]  input source list optional

sources/SquirrelApplicationDelegate.swift

@@ -225,6 +225,8 @@
     let notifCenter = DistributedNotificationCenter.default()
     notifCenter.addObserver(forName: .init("SquirrelReloadNotification"), object: nil, queue: nil, using: rimeNeedsReload)
     notifCenter.addObserver(forName: .init("SquirrelSyncNotification"), object: nil, queue: nil, using: rimeNeedsSync)
+    notifCenter.addObserver(forName: .init("SquirrelToggleASCIIModeNotification"), object: nil, queue: nil, using: rimeToggleASCIIMode)
+    notifCenter.addObserver(forName: .init("SquirrelGetASCIIModeNotification"), object: nil, queue: nil, using: rimeGetASCIIMode)
   }
 
   func applicationShouldTerminate(_ sender: NSApplication) -> NSApplication.TerminateReply {
@@ -307,6 +309,21 @@
     self.syncUserData()
   }
 
+  func rimeToggleASCIIMode(_ notification: Notification) {
+    guard let mode = notification.object as? String else { return }
+    let enableASCII = mode == "ascii"
+
+    if enableASCII {
+      NotificationCenter.default.post(name: .init("SquirrelSetASCIIModeNotification"), object: true)
+    } else {
+      NotificationCenter.default.post(name: .init("SquirrelSetASCIIModeNotification"), object: false)
+    }
+  }
+
+  func rimeGetASCIIMode(_: Notification) {
+    NotificationCenter.default.post(name: .init("SquirrelReportASCIIModeNotification"), object: nil)
+  }
+
   func createDirIfNotExist(path: URL) {
     let fileManager = FileManager.default
     if !fileManager.fileExists(atPath: path.path()) {

sources/SquirrelInputController.swift

@@ -189,6 +189,26 @@
     // print("[DEBUG] initWithServer: \(server ?? .init()) delegate: \(delegate ?? "nil") client:\(client ?? "nil")")
     super.init(server: server, delegate: delegate, client: client)
     createSession()
+
+    // Listen for ASCII mode toggle notifications
+    NotificationCenter.default.addObserver(
+      forName: .init("SquirrelSetASCIIModeNotification"),
+      object: nil,
+      queue: nil
+    ) { [weak self] notification in
+      self?.handleASCIIModeToggle(notification)
+    }
+
+    // Listen for ASCII mode status requests
+    NotificationCenter.default.addObserver(
+      forName: .init("SquirrelReportASCIIModeNotification"),
+      object: nil,
+      queue: nil
+    ) { [weak self] notification in
+      self?.reportASCIIMode(notification)
+    }
+
+
   }
 
   override func deactivateServer(_ sender: Any!) {
@@ -589,4 +609,31 @@
                    highlighted: highlighted, page: page, lastPage: lastPage, update: true)
     }
   }
+
+  private func handleASCIIModeToggle(_ notification: Notification) {
+    guard let enableASCII = notification.object as? Bool else { return }
+    guard session != 0 && rimeAPI.find_session(session) else { return }
+
+    rimeAPI.set_option(session, "ascii_mode", enableASCII)
+
+    // Force update the UI to reflect the mode change
+    rimeUpdate()
+  }
+
+  private func reportASCIIMode(_: Notification) {
+    // Only active input controller should respond
+    guard let client = client else { return }
+    guard session != 0 && rimeAPI.find_session(session) else { return }
+
+    let isASCIIMode = rimeAPI.get_option(session, "ascii_mode")
+    let status = isASCIIMode ? "ascii" : "nascii"
+
+    // Directly respond with the status
+    DistributedNotificationCenter.default().postNotificationName(
+      .init("SquirrelASCIIModeResponse"), 
+      object: status
+    )
+  }
+
+
 }