print active ime on macOS

main.swift

import Foundation
import Carbon
import AppKit

func checkInputMonitoringPermission() -> Bool {
    let options: NSDictionary = [kAXTrustedCheckOptionPrompt.takeRetainedValue() as NSString: true]
    let isTrusted = AXIsProcessTrustedWithOptions(options)
    return isTrusted
}

func openSystemPreferencesForInputMonitoring() {
    let url = URL(string: "x-apple.systempreferences:com.apple.preference.security?Privacy_ListenEvent")!
    NSWorkspace.shared.open(url)
}

func getActiveIMEName() -> String? {
    // 現在のキーボード入力ソースを取得
    guard let inputSource = TISCopyCurrentKeyboardInputSource()?.takeRetainedValue() else {
        return nil
    }
    
    // 入力ソースの名前を取得
    guard let name = TISGetInputSourceProperty(inputSource, kTISPropertyLocalizedName) else {
        return nil
    }

    // 名前を文字列に変換
    let imeName = Unmanaged<CFString>.fromOpaque(name).takeUnretainedValue() as String
    
    guard let bundleIDRef = TISGetInputSourceProperty(inputSource, kTISPropertyBundleID) else {
        return imeName
    }
    
    let bundleID = Unmanaged<CFString>.fromOpaque(bundleIDRef).takeUnretainedValue() as String
    
    // バンドルIDからバンドル名（アプリケーション名）を取得
    if let bundleURL = NSWorkspace.shared.urlForApplication(withBundleIdentifier: bundleID),
       let bundle = Bundle(url: bundleURL),
       let bundleName = bundle.object(forInfoDictionaryKey: "CFBundleName") as? String {
        return "\(imeName) (\(bundleName))"
    }
    
    return imeName
}

// メイン処理
// if checkInputMonitoringPermission() {
   if let activeIME = getActiveIMEName() {
       print("\(activeIME)")
       exit(0)
   } else {
       exit(1)
   }
// } else {
//    print("アプリに入力監視権限がありません。システム環境設定を開いて権限を付与してください。")
//    openSystemPreferencesForInputMonitoring()
// }