export.js

#! /usr/bin/env node
console.log('exporting.')

var fs = require('fs')
var path = require('path')
var os = require('os')
var fse = require('fs.extra')
var Zip = require('node-zip')
var slash = require('slash')
var util = require('./util')

var DM_CERTS_DIR = '/.docker/machine/certs/'
var DM_MACHINE_DIR = '/.docker/machine/machines'
var HOME = os.homedir()
var TMP = os.tmpdir()

var args = process.argv.slice(2)

var machine = args[0]
if (!machine) {
  console.log('machine-export <machine-name>')
  process.exit(1)
}

var tmp = path.join(TMP, machine)
fse.rmrfSync(tmp)

var configDir = path.join(HOME, DM_MACHINE_DIR, machine)
util.copyDir(configDir, tmp)
fs.mkdirSync(path.join(tmp, 'certs'))

processConfig()
createZip()

function processConfig () {
  var configName = path.join(tmp, 'config.json')
  var configFile = fs.readFileSync(configName)
  var config = JSON.parse(configFile.toString())

  util.recurseJson(config, function (parent, key, value) {
    if (typeof value === 'string') {
      if (util.startsWith(value, path.join(HOME, DM_CERTS_DIR))) {
        var name = path.basename(value)
        util.copy(value, path.join(tmp, 'certs', name))
        value = path.join(HOME, DM_CERTS_DIR, machine, name)
      }
      value = value.replace(HOME, '{{HOME}}')
            // uniform windows/unix paths
      value = slash(value)
      parent[key] = value
    }
  })

  fs.writeFileSync(configName, JSON.stringify(config))
}

function createZip () {
  var zip = new Zip()
  var walker = fse.walk(tmp)
  walker.on('file', function (root, stat, next) {
    var dir = path.resolve(root, stat.name)
    zip.folder(root.substring(tmp.length + 1)).file(stat.name, fs.readFileSync(dir).toString())
    next()
  })
  walker.on('end', function () {
    var data = zip.generate({base64: false, compression: 'DEFLATE'})
    fs.writeFileSync(machine + '.zip', data, 'binary')
    fse.rmrfSync(tmp)
  })
}