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     let main = Bundle.main
  13     return main.bundleIdentifier
  14         ?? main.infoDictionary?["CFBundleName"] as? String
  15         ?? main.infoDictionary?["CFBundleExecutable"] as? String
  16         ?? "UnknownAppliation"
  17 }
  18
  19 struct ApplicationDirecrories {
  20
  21     static let support = searchedURL(for: .applicationSupportDirectory)
  22         .appendingPathComponent(supportDirName())
  23
  24     static let documents = searchedURL(for: .documentDirectory)
  25
  26     static let pictures = searchedURL(for: .picturesDirectory)
  27
  28     private static func searchedURL(for directory: FileManager.SearchPathDirectory) -> URL {
  29
  30         return FileManager.default.urls(for: directory,
  31                                         in: .userDomainMask)
  32             .last
  33             ?? URL(fileURLWithPath: NSHomeDirectory())
  34     }
  35 }
  36
  37 func checkDirectory(_ url: URL) -> Bool {
  38     var success = true
  39
  40     do {
  41         let p = try url.resourceValues(forKeys: [.isDirectoryKey])
  42         if !p.isDirectory! {
  43             print("Expected a folder to store application data, found a file \(url.path).")
  44             success = false
  45         }
  46     } catch {
  47         let nserror = error as NSError
  48         if nserror.code == NSFileReadNoSuchFileError {
  49             do {
  50                 try FileManager
  51                     .default
  52                     .createDirectory(at: url,
  53                                      withIntermediateDirectories: false,
  54                                      attributes: nil)
  55             } catch {
  56                 success = false
  57             }
  58         } else {
  59             success = false
  60         }
  61     }
  62
  63     return success
  64 }