| 1 | 'use strict'; |
| 2 | |
| 3 | const ncp = require('ncp').ncp; |
| 4 | const path = require('path'); |
| 5 | const mkdirp = require('mkdirp'); |
| 6 | const rimraf = require('rimraf'); |
| 7 | const exec = require('child_process').exec; |
| 8 | const targz = require('targz'); |
| 9 | |
| 10 | function asyncCopyTo(from, to) { |
| 11 | return asyncMkDirP(path.dirname(to)).then( |
| 12 | () => |
| 13 | new Promise((resolve, reject) => { |
| 14 | ncp(from, to, error => { |
| 15 | if (error) { |
| 16 | // Wrap to have a useful stack trace. |
| 17 | reject(new Error(error)); |
| 18 | } else { |
| 19 | // Wait for copied files to exist; ncp() sometimes completes prematurely. |
| 20 | // For more detail, see github.com/facebook/react/issues/22323 |
| 21 | // Also github.com/AvianFlu/ncp/issues/127 |
| 22 | setTimeout(resolve, 10); |
| 23 | } |
| 24 | }); |
| 25 | }) |
| 26 | ); |
| 27 | } |
| 28 | |
| 29 | function asyncExecuteCommand(command) { |
| 30 | return new Promise((resolve, reject) => |
| 31 | exec(command, (error, stdout) => { |
| 32 | if (error) { |
| 33 | reject(error); |
| 34 | return; |
| 35 | } |
| 36 | resolve(stdout); |
| 37 | }) |
| 38 | ); |
| 39 | } |
| 40 | |
| 41 | function asyncExtractTar(options) { |
| 42 | return new Promise((resolve, reject) => |
| 43 | targz.decompress(options, error => { |
| 44 | if (error) { |
| 45 | reject(error); |
| 46 | return; |
| 47 | } |
| 48 | resolve(); |
| 49 | }) |
| 50 | ); |
| 51 | } |
| 52 | |
| 53 | function asyncMkDirP(filepath) { |
| 54 | return new Promise((resolve, reject) => |
| 55 | mkdirp(filepath, error => { |
| 56 | if (error) { |
| 57 | reject(error); |
| 58 | return; |
| 59 | } |
| 60 | resolve(); |
| 61 | }) |
| 62 | ); |
| 63 | } |
| 64 | |
| 65 | function asyncRimRaf(filepath) { |
| 66 | return new Promise((resolve, reject) => |
| 67 | rimraf(filepath, error => { |
| 68 | if (error) { |
| 69 | reject(error); |
| 70 | return; |
| 71 | } |
| 72 | resolve(); |
| 73 | }) |
| 74 | ); |
| 75 | } |
| 76 | |
| 77 | function resolvePath(filepath) { |
| 78 | if (filepath[0] === '~') { |
| 79 | return path.join(process.env.HOME, filepath.slice(1)); |
| 80 | } else { |
| 81 | return path.resolve(filepath); |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | module.exports = { |
| 86 | asyncCopyTo, |
| 87 | resolvePath, |
| 88 | asyncExecuteCommand, |
| 89 | asyncExtractTar, |
| 90 | asyncMkDirP, |
| 91 | asyncRimRaf, |
| 92 | }; |