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 shared = ApplicationDirecrories()
  35
  36     static let support = searchedURL(for: .applicationSupportDirectory)
  37         .appendingPathComponent(supportDirName())
  38
  39     static let documents = searchedURL(for: .documentDirectory)
  40
  41     static let pictures = searchedURL(for: .picturesDirectory)
  42
  43     private static func searchedURL(for directory: FileManager.SearchPathDirectory) -> URL {
  44
  45         return FileManager.default.urls(for: directory, in: .userDomainMask)
  46             .last
  47             ?? URL(fileURLWithPath: NSHomeDirectory())
  48     }
  49 }
  50
  51
  52 func createDirectory(_ url: URL) -> Bool {
  53
  54     do {
  55
  56         try FileManager.default.createDirectory(at: url,
  57                                                 withIntermediateDirectories: false,
  58                                                 attributes: nil)
  59
  60         return true
  61
  62     } catch {
  63
  64         return false
  65     }
  66 }
  67
  68 func checkDirectory(_ url: URL, create: Bool) -> Bool {
  69
  70     do {
  71
  72         let resourceValue = try url.resourceValues(forKeys: [.isDirectoryKey])
  73         if !resourceValue.isDirectory! {
  74
  75             print("Expected a folder to store application data, found a file \(url.path).")
  76
  77             return false
  78         }
  79
  80         return true
  81
  82     } catch let error as NSError {
  83
  84         if create, error.code == NSFileReadNoSuchFileError {
  85
  86             return createDirectory(url)
  87         }
  88
  89         return false
  90     }
  91 }