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101 lines
2.2 KiB
101 lines
2.2 KiB
var cp = require('child_process') |
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var defSpawnOptions = { stdio: 'inherit' } |
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/** |
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* @summary Get shell program meta for current platform |
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* @private |
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* @returns {Object} |
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*/ |
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function getShell () { |
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if (process.platform === 'win32') { |
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return { cmd: 'cmd', arg: '/C' } |
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} else { |
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return { cmd: 'sh', arg: '-c' } |
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} |
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} |
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/** |
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* Callback is called with the output when the process terminates. Output is |
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* available when true is passed as options argument or stdio: null set |
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* within given options. |
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* |
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* @summary Execute shell command forwarding all stdio |
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* @param {String|Array} command |
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* @param {Object|TRUE} [options] spawn() options or TRUE to set stdio: null |
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* @param {Function} [callback] |
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* @returns {ChildProcess} |
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*/ |
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function execSh (command, options, callback) { |
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if (Array.isArray(command)) { |
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command = command.join(';') |
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} |
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if (options === true) { |
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options = { stdio: null } |
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} |
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if (typeof options === 'function') { |
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callback = options |
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options = defSpawnOptions |
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} else { |
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options = options || {} |
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options = Object.assign({}, defSpawnOptions, options) |
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callback = callback || function () {} |
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} |
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var child |
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var stdout = '' |
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var stderr = '' |
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var shell = getShell() |
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try { |
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child = cp.spawn(shell.cmd, [shell.arg, command], options) |
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} catch (e) { |
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callback(e, stdout, stderr) |
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return |
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} |
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if (child.stdout) { |
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child.stdout.on('data', function (data) { |
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stdout += data |
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}) |
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} |
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if (child.stderr) { |
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child.stderr.on('data', function (data) { |
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stderr += data |
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}) |
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} |
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child.on('close', function (code) { |
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if (code) { |
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var e = new Error('Shell command exit with non zero code: ' + code) |
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e.code = code |
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callback(e, stdout, stderr) |
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} else { |
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callback(null, stdout, stderr) |
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} |
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}) |
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return child |
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} |
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execSh.promise = function (command, options) { |
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return new Promise(function (resolve, reject) { |
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execSh(command, options, function (err, stdout, stderr) { |
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if (err) { |
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err.stdout = stdout |
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err.stderr = stderr |
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return reject(err) |
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} |
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resolve({ |
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stderr: stderr, |
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stdout: stdout |
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}) |
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}) |
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}) |
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} |
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module.exports = execSh
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