source: trip-planner-front/node_modules/@npmcli/promise-spawn/index.js@ eed0bf8

Last change on this file since eed0bf8 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit

  • Property mode set to 100644
File size: 2.0 KB
Line 
1const {spawn} = require('child_process')
2
3const inferOwner = require('infer-owner')
4
5const isPipe = (stdio = 'pipe', fd) =>
6 stdio === 'pipe' || stdio === null ? true
7 : Array.isArray(stdio) ? isPipe(stdio[fd], fd)
8 : false
9
10// 'extra' object is for decorating the error a bit more
11const promiseSpawn = (cmd, args, opts, extra = {}) => {
12 const cwd = opts.cwd || process.cwd()
13 const isRoot = process.getuid && process.getuid() === 0
14 const { uid, gid } = isRoot ? inferOwner.sync(cwd) : {}
15 return promiseSpawnUid(cmd, args, {
16 ...opts,
17 cwd,
18 uid,
19 gid
20 }, extra)
21}
22
23const stdioResult = (stdout, stderr, {stdioString, stdio}) =>
24 stdioString ? {
25 stdout: isPipe(stdio, 1) ? Buffer.concat(stdout).toString() : null,
26 stderr: isPipe(stdio, 2) ? Buffer.concat(stderr).toString() : null,
27 }
28 : {
29 stdout: isPipe(stdio, 1) ? Buffer.concat(stdout) : null,
30 stderr: isPipe(stdio, 2) ? Buffer.concat(stderr) : null,
31 }
32
33const promiseSpawnUid = (cmd, args, opts, extra) => {
34 let proc
35 const p = new Promise((res, rej) => {
36 proc = spawn(cmd, args, opts)
37 const stdout = []
38 const stderr = []
39 const reject = er => rej(Object.assign(er, {
40 cmd,
41 args,
42 ...stdioResult(stdout, stderr, opts),
43 ...extra,
44 }))
45 proc.on('error', reject)
46 if (proc.stdout) {
47 proc.stdout.on('data', c => stdout.push(c)).on('error', reject)
48 proc.stdout.on('error', er => reject(er))
49 }
50 if (proc.stderr) {
51 proc.stderr.on('data', c => stderr.push(c)).on('error', reject)
52 proc.stderr.on('error', er => reject(er))
53 }
54 proc.on('close', (code, signal) => {
55 const result = {
56 cmd,
57 args,
58 code,
59 signal,
60 ...stdioResult(stdout, stderr, opts),
61 ...extra
62 }
63 if (code || signal)
64 rej(Object.assign(new Error('command failed'), result))
65 else
66 res(result)
67 })
68 })
69
70 p.stdin = proc.stdin
71 p.process = proc
72 return p
73}
74
75module.exports = promiseSpawn
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