在 Node.js 中检测 CTRL+C [英] Detecting CTRL+C in Node.js

问题描述

我从另一个 SO question 中得到了这段代码，但是 node 抱怨使用 process.stdin.setRawMode 而不是 tty，所以我改变了它.

I got this code from a different SO question, but node complained to use process.stdin.setRawMode instead of tty, so I changed it.

之前:

var tty = require("tty");

process.openStdin().on("keypress", function(chunk, key) {
  if(key && key.name === "c" && key.ctrl) {
    console.log("bye bye");
    process.exit();
  }
});

tty.setRawMode(true);

之后:

process.stdin.setRawMode(true);
process.stdin.on("keypress", function(chunk, key) {
  if(key && key.name === "c" && key.ctrl) {
    console.log("bye bye");
    process.exit();
  }
});

无论如何，它只是创建了一个完全无响应的节点进程，它什么都不做，第一个抱怨 tty，然后抛出一个错误，第二个什么都不做并禁用 Node 的原生 CTRL+C 处理程序，所以当我按下它时它甚至不会退出节点.如何在Windows中成功处理Ctrl+C?

In any case, it's just creating a totally nonresponsive node process that does nothing, with the first complaining about tty, then throwing an error, and the second just doing nothing and disabling Node's native CTRL+C handler, so it doesn't even quit node when I press it. How can I successfully handle Ctrl+C in Windows?

推荐答案

如果你想捕捉中断信号SIGINT，你不需要从键盘读取.nodejs 的 process 对象暴露了一个中断事件:

If you're trying to catch the interrupt signal SIGINT, you don't need to read from the keyboard. The process object of nodejs exposes an interrupt event:

process.on('SIGINT', function() {
    console.log("Caught interrupt signal");

    if (i_should_exit)
        process.exit();
});

编辑:在没有解决方法的情况下无法在 Windows 上运行.见这里

Edit: doesn't work on Windows without a workaround. See here

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