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const path = require('path');
const utils = require('./utils');
const merge = utils.merge;
const bus = utils.bus;
const spawn = require('child_process').spawn;
module.exports = function spawnCommand(command, config, eventArgs) {
var stdio = ['pipe', 'pipe', 'pipe'];
if (config.options.stdout) {
stdio = ['pipe', process.stdout, process.stderr];
}
const env = merge(process.env, { FILENAME: eventArgs[0] });
var sh = 'sh';
var shFlag = '-c';
var spawnOptions = {
env: merge(config.options.execOptions.env, env),
stdio: stdio,
};
if (!Array.isArray(command)) {
command = [command];
}
if (utils.isWindows) {
// if the exec includes a forward slash, reverse it for windows compat
// but *only* apply to the first command, and none of the arguments.
// ref #1251 and #1236
command = command.map(executable => {
if (executable.indexOf('/') === -1) {
return executable;
}
return executable.split(' ').map((e, i) => {
if (i === 0) {
return path.normalize(e);
}
return e;
}).join(' ');
});
// taken from npm's cli: https://git.io/vNFD4
sh = process.env.comspec || 'cmd';
shFlag = '/d /s /c';
spawnOptions.windowsVerbatimArguments = true;
spawnOptions.windowsHide = true;
}
const args = command.join(' ');
const child = spawn(sh, [shFlag, args], spawnOptions);
if (config.required) {
var emit = {
stdout: function (data) {
bus.emit('stdout', data);
},
stderr: function (data) {
bus.emit('stderr', data);
},
};
// now work out what to bind to...
if (config.options.stdout) {
child.on('stdout', emit.stdout).on('stderr', emit.stderr);
} else {
child.stdout.on('data', emit.stdout);
child.stderr.on('data', emit.stderr);
bus.stdout = child.stdout;
bus.stderr = child.stderr;
}
}
};