写到生成的进程stdin nodejs吗？ [英] Write to spawned process stdin nodejs?

问题描述

我有一个要从另一个脚本运行的脚本。问题在于子脚本（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\n');
});

输入数据后，子脚本应继续执行，但应挂在那里。

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 来提示用户采取措施。这是我对孩子的脚本提示的响应：

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;
    }
});

与假设：

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

您可以使用软件包假设。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页面上的示例中，您可以看到一个脚本编写NPM的示例： https://github.com/jprichardson/node-suppose

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\n')
.end(function(code){
  console.log('Done: ' + code); 
})

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