写入生成的进程标准输入 nodejs? [英] Write to spawned process stdin nodejs?

问题描述

我有一个脚本要从另一个脚本运行.问题是子脚本(进程)在继续之前需要用户输入.

I have a script that I want to run from another one. The problem is that the child script (process) needs an user input before it continues.

var child = spawn('script');
child.stdin.setEncoding('utf8');
child.stdout.on('data', function (data) {
    console.log(data.toString().trim()); // tells me to input my data
    child.stdin.write('my data
');
});

在我输入数据后，子脚本应该继续，但它会挂在那里.

After I input my data the child script should continue but instead it hang in there.

实际上上面的代码对我有用.我在子脚本中使用 commander.js 来提示用户采取行动.以下是我如何回应孩子的脚本提示:

Actually the above code work for me. I'm using commander.js in the child script to prompt the user for action. Here is how I respond to a child's script prompt:

child.stdout.on('data', function (data) {
    switch (data.toString().trim()) {
        case 'Username:':
            child.stdin.write('user');
            break;
        case 'Password:':
            child.stdin.write('pass');
            break;
    }
});

与 suppose 相同:

var suppose = require('suppose');

suppose('script')
    .on('Username: ').respond('user')
    .on('Password: ').respond('pass')
.error(function (err) {
    console.log(err.message);
})
.end(function (code) {
    console.log(code);
    done();
});

推荐答案

您可以使用 suppose 包.这就像 Unix Expect.完全公开，我是作者.

You could use the package suppose. It's like Unix Expect. Full disclosure, I'm the author.

从 Github 页面上的示例，您可以看到它编写 NPM 脚本的示例:https://github.com/jprichardson/节点假设

From the example on the Github page, you can see an example of it scripting NPM: https://github.com/jprichardson/node-suppose

示例:

var suppose = require('suppose')
suppose('script')
.on(/w*/).respond('my data
')
.end(function(code){
  console.log('Done: ' + code); 
})

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