129 lines
3.3 KiB
JavaScript
129 lines
3.3 KiB
JavaScript
'use strict'
|
|
// This is adapted from https://github.com/normalize/mz
|
|
// Copyright (c) 2014-2016 Jonathan Ong me@jongleberry.com and Contributors
|
|
const u = require('universalify').fromCallback
|
|
const fs = require('graceful-fs')
|
|
|
|
const api = [
|
|
'access',
|
|
'appendFile',
|
|
'chmod',
|
|
'chown',
|
|
'close',
|
|
'copyFile',
|
|
'fchmod',
|
|
'fchown',
|
|
'fdatasync',
|
|
'fstat',
|
|
'fsync',
|
|
'ftruncate',
|
|
'futimes',
|
|
'lchmod',
|
|
'lchown',
|
|
'link',
|
|
'lstat',
|
|
'mkdir',
|
|
'mkdtemp',
|
|
'open',
|
|
'opendir',
|
|
'readdir',
|
|
'readFile',
|
|
'readlink',
|
|
'realpath',
|
|
'rename',
|
|
'rm',
|
|
'rmdir',
|
|
'stat',
|
|
'symlink',
|
|
'truncate',
|
|
'unlink',
|
|
'utimes',
|
|
'writeFile'
|
|
].filter(key => {
|
|
// Some commands are not available on some systems. Ex:
|
|
// fs.opendir was added in Node.js v12.12.0
|
|
// fs.rm was added in Node.js v14.14.0
|
|
// fs.lchown is not available on at least some Linux
|
|
return typeof fs[key] === 'function'
|
|
})
|
|
|
|
// Export cloned fs:
|
|
Object.assign(exports, fs)
|
|
|
|
// Universalify async methods:
|
|
api.forEach(method => {
|
|
exports[method] = u(fs[method])
|
|
})
|
|
|
|
// We differ from mz/fs in that we still ship the old, broken, fs.exists()
|
|
// since we are a drop-in replacement for the native module
|
|
exports.exists = function (filename, callback) {
|
|
if (typeof callback === 'function') {
|
|
return fs.exists(filename, callback)
|
|
}
|
|
return new Promise(resolve => {
|
|
return fs.exists(filename, resolve)
|
|
})
|
|
}
|
|
|
|
// fs.read(), fs.write(), & fs.writev() need special treatment due to multiple callback args
|
|
|
|
exports.read = function (fd, buffer, offset, length, position, callback) {
|
|
if (typeof callback === 'function') {
|
|
return fs.read(fd, buffer, offset, length, position, callback)
|
|
}
|
|
return new Promise((resolve, reject) => {
|
|
fs.read(fd, buffer, offset, length, position, (err, bytesRead, buffer) => {
|
|
if (err) return reject(err)
|
|
resolve({ bytesRead, buffer })
|
|
})
|
|
})
|
|
}
|
|
|
|
// Function signature can be
|
|
// fs.write(fd, buffer[, offset[, length[, position]]], callback)
|
|
// OR
|
|
// fs.write(fd, string[, position[, encoding]], callback)
|
|
// We need to handle both cases, so we use ...args
|
|
exports.write = function (fd, buffer, ...args) {
|
|
if (typeof args[args.length - 1] === 'function') {
|
|
return fs.write(fd, buffer, ...args)
|
|
}
|
|
|
|
return new Promise((resolve, reject) => {
|
|
fs.write(fd, buffer, ...args, (err, bytesWritten, buffer) => {
|
|
if (err) return reject(err)
|
|
resolve({ bytesWritten, buffer })
|
|
})
|
|
})
|
|
}
|
|
|
|
// fs.writev only available in Node v12.9.0+
|
|
if (typeof fs.writev === 'function') {
|
|
// Function signature is
|
|
// s.writev(fd, buffers[, position], callback)
|
|
// We need to handle the optional arg, so we use ...args
|
|
exports.writev = function (fd, buffers, ...args) {
|
|
if (typeof args[args.length - 1] === 'function') {
|
|
return fs.writev(fd, buffers, ...args)
|
|
}
|
|
|
|
return new Promise((resolve, reject) => {
|
|
fs.writev(fd, buffers, ...args, (err, bytesWritten, buffers) => {
|
|
if (err) return reject(err)
|
|
resolve({ bytesWritten, buffers })
|
|
})
|
|
})
|
|
}
|
|
}
|
|
|
|
// fs.realpath.native sometimes not available if fs is monkey-patched
|
|
if (typeof fs.realpath.native === 'function') {
|
|
exports.realpath.native = u(fs.realpath.native)
|
|
} else {
|
|
process.emitWarning(
|
|
'fs.realpath.native is not a function. Is fs being monkey-patched?',
|
|
'Warning', 'fs-extra-WARN0003'
|
|
)
|
|
}
|