KCD/ApplicationDirecrories.swift

   1 //
   2 //  ApplicationDirecrories.swift
   3 //  KCD
   4 //
   5 //  Created by Hori,Masaki on 2017/02/08.
   6 //  Copyright © 2017年 Hori,Masaki. All rights reserved.
   7 //
   8
   9 import Foundation
  10
  11 private func supportDirName() -> String {
  12
  13     let main = Bundle.main
  14
  15     return main.bundleIdentifier
  16         ?? main.infoDictionary?["CFBundleName"] as? String
  17         ?? main.infoDictionary?["CFBundleExecutable"] as? String
  18         ?? "UnknownAppliation"
  19 }
  20
  21 struct ApplicationDirecrories {
  22
  23     static let support = searchedURL(for: .applicationSupportDirectory)
  24         .appendingPathComponent(supportDirName())
  25
  26     static let documents = searchedURL(for: .documentDirectory)
  27
  28     static let pictures = searchedURL(for: .picturesDirectory)
  29
  30     private static func searchedURL(for directory: FileManager.SearchPathDirectory) -> URL {
  31
  32         return FileManager.default.urls(for: directory, in: .userDomainMask)
  33             .last
  34             ?? URL(fileURLWithPath: NSHomeDirectory())
  35     }
  36 }
  37
  38 func createDirectory(_ url: URL) -> Bool {
  39
  40     do {
  41
  42         try FileManager.default.createDirectory(at: url,
  43                                                 withIntermediateDirectories: false,
  44                                                 attributes: nil)
  45
  46         return true
  47
  48     } catch {
  49
  50         return false
  51
  52     }
  53 }
  54
  55 func checkDirectory(_ url: URL) -> Bool {
  56
  57     do {
  58
  59         let resourceValue = try url.resourceValues(forKeys: [.isDirectoryKey])
  60         if !resourceValue.isDirectory! {
  61
  62             print("Expected a folder to store application data, found a file \(url.path).")
  63
  64             return false
  65         }
  66
  67         return true
  68
  69     } catch {
  70
  71         let nserror = error as NSError
  72         if nserror.code == NSFileReadNoSuchFileError {
  73
  74             return createDirectory(url)
  75         }
  76
  77         return false
  78     }
  79 }