--- /dev/null
+'use strict';
+const path = require('path');
+const childProcess = require('child_process');
+const crossSpawn = require('cross-spawn');
+const stripEof = require('strip-eof');
+const npmRunPath = require('npm-run-path');
+const isStream = require('is-stream');
+const _getStream = require('get-stream');
+const pFinally = require('p-finally');
+const onExit = require('signal-exit');
+const errname = require('./lib/errname');
+const stdio = require('./lib/stdio');
+
+const TEN_MEGABYTES = 1000 * 1000 * 10;
+
+function handleArgs(cmd, args, opts) {
+ let parsed;
+
+ opts = Object.assign({
+ extendEnv: true,
+ env: {}
+ }, opts);
+
+ if (opts.extendEnv) {
+ opts.env = Object.assign({}, process.env, opts.env);
+ }
+
+ if (opts.__winShell === true) {
+ delete opts.__winShell;
+ parsed = {
+ command: cmd,
+ args,
+ options: opts,
+ file: cmd,
+ original: {
+ cmd,
+ args
+ }
+ };
+ } else {
+ parsed = crossSpawn._parse(cmd, args, opts);
+ }
+
+ opts = Object.assign({
+ maxBuffer: TEN_MEGABYTES,
+ buffer: true,
+ stripEof: true,
+ preferLocal: true,
+ localDir: parsed.options.cwd || process.cwd(),
+ encoding: 'utf8',
+ reject: true,
+ cleanup: true
+ }, parsed.options);
+
+ opts.stdio = stdio(opts);
+
+ if (opts.preferLocal) {
+ opts.env = npmRunPath.env(Object.assign({}, opts, {cwd: opts.localDir}));
+ }
+
+ if (opts.detached) {
+ // #115
+ opts.cleanup = false;
+ }
+
+ if (process.platform === 'win32' && path.basename(parsed.command) === 'cmd.exe') {
+ // #116
+ parsed.args.unshift('/q');
+ }
+
+ return {
+ cmd: parsed.command,
+ args: parsed.args,
+ opts,
+ parsed
+ };
+}
+
+function handleInput(spawned, input) {
+ if (input === null || input === undefined) {
+ return;
+ }
+
+ if (isStream(input)) {
+ input.pipe(spawned.stdin);
+ } else {
+ spawned.stdin.end(input);
+ }
+}
+
+function handleOutput(opts, val) {
+ if (val && opts.stripEof) {
+ val = stripEof(val);
+ }
+
+ return val;
+}
+
+function handleShell(fn, cmd, opts) {
+ let file = '/bin/sh';
+ let args = ['-c', cmd];
+
+ opts = Object.assign({}, opts);
+
+ if (process.platform === 'win32') {
+ opts.__winShell = true;
+ file = process.env.comspec || 'cmd.exe';
+ args = ['/s', '/c', `"${cmd}"`];
+ opts.windowsVerbatimArguments = true;
+ }
+
+ if (opts.shell) {
+ file = opts.shell;
+ delete opts.shell;
+ }
+
+ return fn(file, args, opts);
+}
+
+function getStream(process, stream, {encoding, buffer, maxBuffer}) {
+ if (!process[stream]) {
+ return null;
+ }
+
+ let ret;
+
+ if (!buffer) {
+ // TODO: Use `ret = util.promisify(stream.finished)(process[stream]);` when targeting Node.js 10
+ ret = new Promise((resolve, reject) => {
+ process[stream]
+ .once('end', resolve)
+ .once('error', reject);
+ });
+ } else if (encoding) {
+ ret = _getStream(process[stream], {
+ encoding,
+ maxBuffer
+ });
+ } else {
+ ret = _getStream.buffer(process[stream], {maxBuffer});
+ }
+
+ return ret.catch(err => {
+ err.stream = stream;
+ err.message = `${stream} ${err.message}`;
+ throw err;
+ });
+}
+
+function makeError(result, options) {
+ const {stdout, stderr} = result;
+
+ let err = result.error;
+ const {code, signal} = result;
+
+ const {parsed, joinedCmd} = options;
+ const timedOut = options.timedOut || false;
+
+ if (!err) {
+ let output = '';
+
+ if (Array.isArray(parsed.opts.stdio)) {
+ if (parsed.opts.stdio[2] !== 'inherit') {
+ output += output.length > 0 ? stderr : `\n${stderr}`;
+ }
+
+ if (parsed.opts.stdio[1] !== 'inherit') {
+ output += `\n${stdout}`;
+ }
+ } else if (parsed.opts.stdio !== 'inherit') {
+ output = `\n${stderr}${stdout}`;
+ }
+
+ err = new Error(`Command failed: ${joinedCmd}${output}`);
+ err.code = code < 0 ? errname(code) : code;
+ }
+
+ err.stdout = stdout;
+ err.stderr = stderr;
+ err.failed = true;
+ err.signal = signal || null;
+ err.cmd = joinedCmd;
+ err.timedOut = timedOut;
+
+ return err;
+}
+
+function joinCmd(cmd, args) {
+ let joinedCmd = cmd;
+
+ if (Array.isArray(args) && args.length > 0) {
+ joinedCmd += ' ' + args.join(' ');
+ }
+
+ return joinedCmd;
+}
+
+module.exports = (cmd, args, opts) => {
+ const parsed = handleArgs(cmd, args, opts);
+ const {encoding, buffer, maxBuffer} = parsed.opts;
+ const joinedCmd = joinCmd(cmd, args);
+
+ let spawned;
+ try {
+ spawned = childProcess.spawn(parsed.cmd, parsed.args, parsed.opts);
+ } catch (err) {
+ return Promise.reject(err);
+ }
+
+ let removeExitHandler;
+ if (parsed.opts.cleanup) {
+ removeExitHandler = onExit(() => {
+ spawned.kill();
+ });
+ }
+
+ let timeoutId = null;
+ let timedOut = false;
+
+ const cleanup = () => {
+ if (timeoutId) {
+ clearTimeout(timeoutId);
+ timeoutId = null;
+ }
+
+ if (removeExitHandler) {
+ removeExitHandler();
+ }
+ };
+
+ if (parsed.opts.timeout > 0) {
+ timeoutId = setTimeout(() => {
+ timeoutId = null;
+ timedOut = true;
+ spawned.kill(parsed.opts.killSignal);
+ }, parsed.opts.timeout);
+ }
+
+ const processDone = new Promise(resolve => {
+ spawned.on('exit', (code, signal) => {
+ cleanup();
+ resolve({code, signal});
+ });
+
+ spawned.on('error', err => {
+ cleanup();
+ resolve({error: err});
+ });
+
+ if (spawned.stdin) {
+ spawned.stdin.on('error', err => {
+ cleanup();
+ resolve({error: err});
+ });
+ }
+ });
+
+ function destroy() {
+ if (spawned.stdout) {
+ spawned.stdout.destroy();
+ }
+
+ if (spawned.stderr) {
+ spawned.stderr.destroy();
+ }
+ }
+
+ const handlePromise = () => pFinally(Promise.all([
+ processDone,
+ getStream(spawned, 'stdout', {encoding, buffer, maxBuffer}),
+ getStream(spawned, 'stderr', {encoding, buffer, maxBuffer})
+ ]).then(arr => {
+ const result = arr[0];
+ result.stdout = arr[1];
+ result.stderr = arr[2];
+
+ if (result.error || result.code !== 0 || result.signal !== null) {
+ const err = makeError(result, {
+ joinedCmd,
+ parsed,
+ timedOut
+ });
+
+ // TODO: missing some timeout logic for killed
+ // https://github.com/nodejs/node/blob/master/lib/child_process.js#L203
+ // err.killed = spawned.killed || killed;
+ err.killed = err.killed || spawned.killed;
+
+ if (!parsed.opts.reject) {
+ return err;
+ }
+
+ throw err;
+ }
+
+ return {
+ stdout: handleOutput(parsed.opts, result.stdout),
+ stderr: handleOutput(parsed.opts, result.stderr),
+ code: 0,
+ failed: false,
+ killed: false,
+ signal: null,
+ cmd: joinedCmd,
+ timedOut: false
+ };
+ }), destroy);
+
+ crossSpawn._enoent.hookChildProcess(spawned, parsed.parsed);
+
+ handleInput(spawned, parsed.opts.input);
+
+ spawned.then = (onfulfilled, onrejected) => handlePromise().then(onfulfilled, onrejected);
+ spawned.catch = onrejected => handlePromise().catch(onrejected);
+
+ return spawned;
+};
+
+// TODO: set `stderr: 'ignore'` when that option is implemented
+module.exports.stdout = (...args) => module.exports(...args).then(x => x.stdout);
+
+// TODO: set `stdout: 'ignore'` when that option is implemented
+module.exports.stderr = (...args) => module.exports(...args).then(x => x.stderr);
+
+module.exports.shell = (cmd, opts) => handleShell(module.exports, cmd, opts);
+
+module.exports.sync = (cmd, args, opts) => {
+ const parsed = handleArgs(cmd, args, opts);
+ const joinedCmd = joinCmd(cmd, args);
+
+ if (isStream(parsed.opts.input)) {
+ throw new TypeError('The `input` option cannot be a stream in sync mode');
+ }
+
+ const result = childProcess.spawnSync(parsed.cmd, parsed.args, parsed.opts);
+ result.code = result.status;
+
+ if (result.error || result.status !== 0 || result.signal !== null) {
+ const err = makeError(result, {
+ joinedCmd,
+ parsed
+ });
+
+ if (!parsed.opts.reject) {
+ return err;
+ }
+
+ throw err;
+ }
+
+ return {
+ stdout: handleOutput(parsed.opts, result.stdout),
+ stderr: handleOutput(parsed.opts, result.stderr),
+ code: 0,
+ failed: false,
+ signal: null,
+ cmd: joinedCmd,
+ timedOut: false
+ };
+};
+
+module.exports.shellSync = (cmd, opts) => handleShell(module.exports.sync, cmd, opts);
projects / dotfiles / .git / blobdiff