child_process.spawn을 실행할 때 색상 유지

child_process.spawn을 실행할 때 색상 유지

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child_process.spawn을 사용하여 node.js의 cmd.exe를 통해 Windows 명령을 실행하려고합니다. 올바르게 실행되지만 기본 텍스트 색상으로 만 표시됩니다. 색상을 어떻게 보존합니까? 가능합니까?

var spawn = require('child_process').spawn,
    cmd    = spawn('cmd', ['/s', '/c', 'C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\MSBuild c:\\test.sln']);

cmd.stdout.on('data', function(data){
    process.stdout.write(data);
});

cmd.stderr.on('data', function(data){
    process.stderr.write(data);
});

cmd.on('exit', function(code){
    console.log(code);
});

노드를 통해 실행할 때 색상이 유지되지 않습니다.

cmd.exe를 통해 직접 실행하면 색상이 표시됩니다. (이것은 예상되는 동작입니다). 노드를 통해 실행할 때이 동작을 어떻게 얻습니까?

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대신 이것을 시도하십시오.

var spawn = require('child_process').spawn
  , command = 'C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\MSBuild c:\\test.sln'
  , cmd    = spawn('cmd', ['/s', '/c', command], { customFds: [0,1,2] });

cmd.on('exit', function(code){
    console.log(code);
});

customFdsWindows에서 작동 하는지 여부는 확실하지 않습니다 . 이전 사용되지 않는 기능이 작동하지 않는다는 것을 알고 있지만 [0,1,2]fd 로만 전달 하면 특별한 경우가 있다고 생각합니다.

I've been doing something similar here, but I've only ran that command on Unix machines. So let me know if that works on Windows.

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There are new 'stdio' option for child_process.spawn(). Try following:

spawn("path to executable", ["params"], {stdio: "inherit"});

"Inherit" means [0, 1, 2] or [process.stdin, process.stdout, process.stderr].

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crossplatform solution that worked for me was to use both shell: true and stdio: 'inherit':

const spawn = require('child_process').spawn;

spawn('node', ['./child.js'], { shell: true, stdio: 'inherit' });

thanks @59naga https://github.com/nodejs/node/issues/2333

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If you are getting error:

Cannot call method 'on' of null

Try this:

spawn("command", ["args"], { env : { FORCE_COLOR: true }});

works with mocha

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This doesn't fix the underlying issue (lack of a proper TTY stream) but it should help get around it.

If the sub-process you're running uses supports-color (https://www.npmjs.com/package/supports-color) like chalk, then you can set an environmental variable FORCE_COLOR to any value and it will skip the rest of the checks. This will allow you to continue to use pipes (and capture/modify the returned data) unlike the inherit fix.

There is also a node-pty (https://www.npmjs.com/package/node-pty) module that provides a .spawn with the ability to pass a pty (pseudo tty) that may be a more holistic answer. I haven't played with it yet, and I'm not sure if it's cross platform or not.

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If you want to either keep the color or add some notation for the output, you can try the code below:

var spawn = require('child_process').spawn,
var stream = require('stream');
cmd = spawn('cmd', ['/s', '/c', 'C:\\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\MSBuild c:\\test.sln'], { stdio: [process.stdin, process.stdout, 'pipe'] });
var customStream = new stream.Writable();
customStream._write = function (data, ...argv) {
        console.log('your notation');
        process.stderr._write(data, ...argv);
 };
cmd.stderr.pipe(customStream);

note that the code use es6

참고 URL : https://stackoverflow.com/questions/7725809/preserve-color-when-executing-child-process-spawn