In my VS Code extension, I'd like to invoke a python file and append standard output to VSCode's output channel. I'm aware that I can create an output channel via vscode.window.createOutputChannel("..."); and I'm also aware I can execute such python (or for this matter, any local bash) script via these APIs: https://nodejs.org/api/child_process.html. Would it be possible to append standard out information to this output channel in real-time (i.e., as the script runs)?
What I currently have is the following:
export function execute(cmd: string, callback: any, logging?: vscode.OutputChannel) {
const spwanedProcess = spawn(cmd, [], {shell: true, detached: true});
console.log(`spawned pid ${spwanedProcess.pid} with command ${cmd}`);
spwanedProcess.stdout.on('data', (data: any) => {
console.log(data);
logging?.appendLine("stdout:" + data);
});
spwanedProcess.stderr.on('data', (data: any) => {
console.error(`spawned pid ${spwanedProcess.pid} pushed something to stderr`);
logging?.appendLine(data);
});
spwanedProcess.on('exit', function(code: any) {
if (code !== 0) {
console.log('Failed: ' + code);
}
else {
console.log(`pid ${spwanedProcess.pid} finished`);
}
callback();
});
}
where callback() is something to be executed after the execution is done. I got this structure from here https://stackoverflow.com/a/32872753/14264786.
However, when I run a simple python code that sleeps for 3 seconds and prints something and does this again, the standard out information is still not displayed on the logging in real-time. Instead, they are outputted together after the script finishes.
Any idea on what's a potential solution?
