使用Swift应用程序中的管道()将标准输出重定向到textView (仅在模拟器中运行，不在本机中运行)

import UIKit

class ViewController: UIViewController {
    @IBOutlet weak var textView: UITextView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建管道
        let pipe = Pipe()
        
        // 将标准输出重定向到管道
        dup2(pipe.fileHandleForWriting.fileDescriptor, STDOUT_FILENO)
        
        // 添加观察者来监听管道的数据
        NotificationCenter.default.addObserver(self, selector: #selector(handlePipeData(_:)), name: .NSFileHandleDataAvailable, object: pipe.fileHandleForReading)
        pipe.fileHandleForReading.waitForDataInBackgroundAndNotify()
    }
    
    @objc func handlePipeData(_ notification: Notification) {
        if let data = notification.object as? FileHandle, let output = String(data: data.availableData, encoding: .utf8) {
            DispatchQueue.main.async {
                self.textView.text += output
            }
            data.waitForDataInBackgroundAndNotify()
        }
    }
    
    deinit {
        NotificationCenter.default.removeObserver(self)
    }
}