// adopted from https://github.com/isaacs/rimraf
// Copyright (c) Isaac Z. Schlueter and Contributor (ISC)
// removed rimraf.sync, windows and cli support

var assert = require('assert')
var path = require('path')
var fs = require('fs')
var glob = require('../glob/glob')

var globOpts = {
  nosort: true,
  nocomment: true,
  nonegate: true,
  silent: true
}

// for EMFILE handling
var timeout = 0

function defaults (options) {
  var methods = [
    'unlink',
    'chmod',
    'stat',
    'lstat',
    'rmdir',
    'readdir'
  ]

  methods.forEach(function (m) {
    options[m] = options[m] || fs[m]
    m = m + 'Sync'
    options[m] = options[m] || fs[m]
  })

  options.maxBusyTries = options.maxBusyTries || 3
  options.emfileWait = options.emfileWait || 1000
  options.disableGlob = options.disableGlob || false
}

function rimraf (p, options, cb) {
  if (typeof options === 'function') {
    cb = options
    options = {}
  }

  assert(p, 'rimraf: missing path')
  assert.equal(typeof p, 'string', 'rimraf: path should be a string')
  assert(options, 'rimraf: missing options')
  assert.equal(typeof options, 'object', 'rimraf: options should be object')
  assert.equal(typeof cb, 'function', 'rimraf: callback function required')

  defaults(options)

  var busyTries = 0
  var errState = null
  var n = 0

  if (options.disableGlob || !glob.hasMagic(p))
    return afterGlob(null, [p])

  fs.lstat(p, function (er, stat) {
    if (!er)
      return afterGlob(null, [p])

    glob(p, globOpts, afterGlob)
  })

  function next (er) {
    errState = errState || er
    if (--n === 0)
      cb(errState)
  }

  function afterGlob (er, results) {
    if (er)
      return cb(er)

    n = results.length
    if (n === 0)
      return cb()

    results.forEach(function (p) {
      rimraf_(p, options, function CB (er) {
        if (er) {
          // this one won't happen if graceful-fs is used.
          if (er.code === "EMFILE" && timeout < options.emfileWait) {
            return setTimeout(function () {
              rimraf_(p, options, CB)
            }, timeout ++)
          }

          // already gone
          if (er.code === "ENOENT") er = null
        }

        timeout = 0
        next(er)
      })
    })
  }
}

// Two possible strategies.
// 1. Assume it's a file.  unlink it, then do the dir stuff on EPERM or EISDIR
// 2. Assume it's a directory.  readdir, then do the file stuff on ENOTDIR
//
// Both result in an extra syscall when you guess wrong.  However, there
// are likely far more normal files in the world than directories.  This
// is based on the assumption that a the average number of files per
// directory is >= 1.
//
// If anyone ever complains about this, then I guess the strategy could
// be made configurable somehow.  But until then, YAGNI.
function rimraf_ (p, options, cb) {
  assert(p)
  assert(options)
  assert(typeof cb === 'function')

  // sunos lets the root user unlink directories, which is... weird.
  // so we have to lstat here and make sure it's not a dir.
  options.lstat(p, function (er, st) {
    if (er && er.code === "ENOENT")
      return cb(null)

    if (st && st.isDirectory())
      return rmdir(p, options, er, cb)

    options.unlink(p, function (er) {
      if (er) {
        if (er.code === "ENOENT")
          return cb(null)
        if (er.code === "EPERM")
          return rmdir(p, options, er, cb)
        if (er.code === "EISDIR")
          return rmdir(p, options, er, cb)
      }
      return cb(er)
    })
  })
}

function rmdir (p, options, originalEr, cb) {
  assert(p)
  assert(options)
  if (originalEr)
    assert(originalEr instanceof Error)
  assert(typeof cb === 'function')

  // try to rmdir first, and only readdir on ENOTEMPTY or EEXIST (SunOS)
  // if we guessed wrong, and it's not a directory, then
  // raise the original error.
  options.rmdir(p, function (er) {
    if (er && (er.code === "ENOTEMPTY" || er.code === "EEXIST" || er.code === "EPERM"))
      rmkids(p, options, cb)
    else if (er && er.code === "ENOTDIR")
      cb(originalEr)
    else
      cb(er)
  })
}

function rmkids(p, options, cb) {
  assert(p)
  assert(options)
  assert(typeof cb === 'function')

  options.readdir(p, function (er, files) {
    if (er)
      return cb(er)
    var n = files.length
    if (n === 0)
      return options.rmdir(p, cb)
    var errState
    files.forEach(function (f) {
      rimraf(path.join(p, f), options, function (er) {
        if (errState)
          return
        if (er)
          return cb(errState = er)
        if (--n === 0)
          options.rmdir(p, cb)
      })
    })
  })
}

module.exports = rimraf

@@ -270,17 +270,24 @@
 ')%0A%0Avar 
-g
+defaultG
 lobOpts 
@@ -310,45 +310,8 @@
 ue,%0A
-  nocomment: true,%0A  nonegate: true,%0A
   si
@@ -729,16 +729,73 @@
 %7C%7C 1000%0A
+  if (options.glob === false) options.disableGlob = true%0A
   option
@@ -839,16 +839,65 @@
 %7C false%0A
+  options.glob = options.glob %7C%7C defaultGlobOpts%0A
 %7D%0A%0Afunct
@@ -1566,16 +1566,17 @@
 (p, 
+opts.
 glob
-Opts
 , af

update file/rimraf -- compatibility update