| 1 | 'use strict';
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| 2 | var spawn = require('child_process').spawn;
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| 3 | var executable = require('executable');
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| 4 |
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| 5 | module.exports = function (bin, cmd, cb) {
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| 6 | if (typeof cmd === 'function') {
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| 7 | cb = cmd;
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| 8 | cmd = ['--help'];
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| 9 | }
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| 10 |
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| 11 | executable(bin, function (err, works) {
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| 12 | if (err) {
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| 13 | cb(err);
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| 14 | return;
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| 15 | }
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| 16 |
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| 17 | if (!works) {
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| 18 | cb(new Error('Couldn\'t execute the `' + bin + '` binary. Make sure it has the right permissions.'));
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| 19 | return;
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| 20 | }
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| 21 |
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| 22 | var cp = spawn(bin, cmd);
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| 23 |
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| 24 | cp.on('error', cb);
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| 25 | cp.on('exit', function (code) {
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| 26 | cb(null, code === 0);
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| 27 | });
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| 28 | });
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| 29 | };
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