| 'use strict' |
| |
| const u = require('universalify').fromCallback |
| const path = require('path') |
| const fs = require('graceful-fs') |
| const mkdir = require('../mkdirs') |
| const pathExists = require('../path-exists').pathExists |
| |
| function createLink (srcpath, dstpath, callback) { |
| function makeLink (srcpath, dstpath) { |
| fs.link(srcpath, dstpath, err => { |
| if (err) return callback(err) |
| callback(null) |
| }) |
| } |
| |
| pathExists(dstpath, (err, destinationExists) => { |
| if (err) return callback(err) |
| if (destinationExists) return callback(null) |
| fs.lstat(srcpath, (err) => { |
| if (err) { |
| err.message = err.message.replace('lstat', 'ensureLink') |
| return callback(err) |
| } |
| |
| const dir = path.dirname(dstpath) |
| pathExists(dir, (err, dirExists) => { |
| if (err) return callback(err) |
| if (dirExists) return makeLink(srcpath, dstpath) |
| mkdir.mkdirs(dir, err => { |
| if (err) return callback(err) |
| makeLink(srcpath, dstpath) |
| }) |
| }) |
| }) |
| }) |
| } |
| |
| function createLinkSync (srcpath, dstpath) { |
| const destinationExists = fs.existsSync(dstpath) |
| if (destinationExists) return undefined |
| |
| try { |
| fs.lstatSync(srcpath) |
| } catch (err) { |
| err.message = err.message.replace('lstat', 'ensureLink') |
| throw err |
| } |
| |
| const dir = path.dirname(dstpath) |
| const dirExists = fs.existsSync(dir) |
| if (dirExists) return fs.linkSync(srcpath, dstpath) |
| mkdir.mkdirsSync(dir) |
| |
| return fs.linkSync(srcpath, dstpath) |
| } |
| |
| module.exports = { |
| createLink: u(createLink), |
| createLinkSync |
| } |