forked from lix-project/lix-website
50 lines
1 KiB
JavaScript
50 lines
1 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
var spawn = require('child_process').spawn;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Spawn a binary and read its stdout.
|
||
|
|
* @param {String} cmd The name of the binary to spawn.
|
||
|
|
* @param {String[]} args The arguments for the binary.
|
||
|
|
* @param {Object} [options] Optional option for the spawn function.
|
||
|
|
* @param {Function} done(err, stdout)
|
||
|
|
*/
|
||
|
|
function run(cmd, args, options, done) {
|
||
|
|
if (typeof options === 'function') {
|
||
|
|
done = options;
|
||
|
|
options = undefined;
|
||
|
|
}
|
||
|
|
|
||
|
|
var executed = false;
|
||
|
|
var ch = spawn(cmd, args, options);
|
||
|
|
var stdout = '';
|
||
|
|
var stderr = '';
|
||
|
|
|
||
|
|
ch.stdout.on('data', function(d) {
|
||
|
|
stdout += d.toString();
|
||
|
|
});
|
||
|
|
|
||
|
|
ch.stderr.on('data', function(d) {
|
||
|
|
stderr += d.toString();
|
||
|
|
});
|
||
|
|
|
||
|
|
ch.on('error', function(err) {
|
||
|
|
if (executed) return;
|
||
|
|
executed = true;
|
||
|
|
done(new Error(err));
|
||
|
|
});
|
||
|
|
|
||
|
|
ch.on('close', function(code) {
|
||
|
|
if (executed) return;
|
||
|
|
executed = true;
|
||
|
|
|
||
|
|
if (stderr) {
|
||
|
|
return done(new Error(stderr));
|
||
|
|
}
|
||
|
|
|
||
|
|
done(null, stdout, code);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = run;
|