ccc-tnt-psd2ui/npm-packages/mac-v3.4.+/fs-extra/lib/ensure/symlink.js
2023-07-24 11:13:08 +08:00

83 lines
2.5 KiB
JavaScript

'use strict'
const u = require('universalify').fromCallback
const path = require('path')
const fs = require('../fs')
const _mkdirs = require('../mkdirs')
const mkdirs = _mkdirs.mkdirs
const mkdirsSync = _mkdirs.mkdirsSync
const _symlinkPaths = require('./symlink-paths')
const symlinkPaths = _symlinkPaths.symlinkPaths
const symlinkPathsSync = _symlinkPaths.symlinkPathsSync
const _symlinkType = require('./symlink-type')
const symlinkType = _symlinkType.symlinkType
const symlinkTypeSync = _symlinkType.symlinkTypeSync
const pathExists = require('../path-exists').pathExists
const { areIdentical } = require('../util/stat')
function createSymlink (srcpath, dstpath, type, callback) {
callback = (typeof type === 'function') ? type : callback
type = (typeof type === 'function') ? false : type
fs.lstat(dstpath, (err, stats) => {
if (!err && stats.isSymbolicLink()) {
Promise.all([
fs.stat(srcpath),
fs.stat(dstpath)
]).then(([srcStat, dstStat]) => {
if (areIdentical(srcStat, dstStat)) return callback(null)
_createSymlink(srcpath, dstpath, type, callback)
})
} else _createSymlink(srcpath, dstpath, type, callback)
})
}
function _createSymlink (srcpath, dstpath, type, callback) {
symlinkPaths(srcpath, dstpath, (err, relative) => {
if (err) return callback(err)
srcpath = relative.toDst
symlinkType(relative.toCwd, type, (err, type) => {
if (err) return callback(err)
const dir = path.dirname(dstpath)
pathExists(dir, (err, dirExists) => {
if (err) return callback(err)
if (dirExists) return fs.symlink(srcpath, dstpath, type, callback)
mkdirs(dir, err => {
if (err) return callback(err)
fs.symlink(srcpath, dstpath, type, callback)
})
})
})
})
}
function createSymlinkSync (srcpath, dstpath, type) {
let stats
try {
stats = fs.lstatSync(dstpath)
} catch {}
if (stats && stats.isSymbolicLink()) {
const srcStat = fs.statSync(srcpath)
const dstStat = fs.statSync(dstpath)
if (areIdentical(srcStat, dstStat)) return
}
const relative = symlinkPathsSync(srcpath, dstpath)
srcpath = relative.toDst
type = symlinkTypeSync(relative.toCwd, type)
const dir = path.dirname(dstpath)
const exists = fs.existsSync(dir)
if (exists) return fs.symlinkSync(srcpath, dstpath, type)
mkdirsSync(dir)
return fs.symlinkSync(srcpath, dstpath, type)
}
module.exports = {
createSymlink: u(createSymlink),
createSymlinkSync
}