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 func localizedAppName() -> String {
  22
  23     guard let name = Bundle.main.localizedInfoDictionary?["CFBundleName"] as? String,
  24         !name.isEmpty else {
  25
  26             return supportDirName()
  27     }
  28
  29     return name
  30 }
  31
  32 struct ApplicationDirecrories {
  33
  34     static let support = searchedURL(for: .applicationSupportDirectory)
  35         .appendingPathComponent(supportDirName())
  36
  37     static let documents = searchedURL(for: .documentDirectory)
  38
  39     static let pictures = searchedURL(for: .picturesDirectory)
  40
  41     private static func searchedURL(for directory: FileManager.SearchPathDirectory) -> URL {
  42
  43         return FileManager.default.urls(for: directory, in: .userDomainMask)
  44             .last
  45             ?? URL(fileURLWithPath: NSHomeDirectory())
  46     }
  47 }
  48
  49
  50 func createDirectory(_ url: URL) -> Bool {
  51
  52     do {
  53
  54         try FileManager.default.createDirectory(at: url,
  55                                                 withIntermediateDirectories: false,
  56                                                 attributes: nil)
  57
  58         return true
  59
  60     } catch {
  61
  62         return false
  63     }
  64 }
  65
  66 func checkDirectory(_ url: URL, create: Bool) -> Bool {
  67
  68     do {
  69
  70         let resourceValue = try url.resourceValues(forKeys: [.isDirectoryKey])
  71         if !resourceValue.isDirectory! {
  72
  73             print("Expected a folder to store application data, found a file \(url.path).")
  74
  75             return false
  76         }
  77
  78         return true
  79
  80     } catch let error as NSError {
  81
  82         if create, error.code == NSFileReadNoSuchFileError {
  83
  84             return createDirectory(url)
  85         }
  86
  87         return false
  88     }
  89 }