Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/corlib/System/Environment.iOS.cs

@@ -0,0 +1,148 @@
+// Copyright 2014 Xamarin Inc.
+
+// note: or older hack to give the Documents (or Library) directories 
+
+using System.IO;
+using System.Runtime.InteropServices;
+
+namespace System {
+
+	public static partial class Environment {
+
+		static string ns_document;
+		static string ns_library;
+
+		[DllImport ("__Internal")]
+		extern static string xamarin_GetFolderPath (int folder);
+
+		static string NSDocumentDirectory {
+			get {
+				if (ns_document == null) {
+#if MONOTOUCH_TV
+					// The "normal" NSDocumentDirectory is a read-only directory on tvOS
+					// and that breaks a lot of assumptions in the runtime and the BCL
+					// to avoid this we relocate the Documents directory under Caches
+					ns_document = Path.Combine (NSLibraryDirectory, "Caches", "Documents");
+					if (!Directory.Exists (ns_document))
+						Directory.CreateDirectory (ns_document);
+#else
+					ns_document = xamarin_GetFolderPath (/* NSDocumentDirectory */ 9);
+#endif
+				}
+				return ns_document;
+			}
+		}
+
+		// Various user-visible documentation, support, and configuration files
+		static string NSLibraryDirectory {
+			get {
+				if (ns_library == null)
+					ns_library = xamarin_GetFolderPath (/* NSLibraryDirectory */ 5);
+				return ns_library;
+			}
+		}
+
+		public static string GetFolderPath (SpecialFolder folder, SpecialFolderOption option)
+		{
+			return UnixGetFolderPath (folder, option);
+		}
+
+		// needed by our BCL, e.g. IsolatedStorageFile.cs
+		internal static string UnixGetFolderPath (SpecialFolder folder, SpecialFolderOption option)
+		{
+			var dir = iOSGetFolderPath (folder);
+			if ((option == SpecialFolderOption.Create) && !Directory.Exists (dir))
+				Directory.CreateDirectory (dir);
+			return dir;
+		}
+
+		internal static string iOSGetFolderPath (SpecialFolder folder)
+		{
+			switch (folder) {
+			case SpecialFolder.MyComputer:
+			case SpecialFolder.Programs:
+			case SpecialFolder.SendTo:
+			case SpecialFolder.StartMenu:
+			case SpecialFolder.Startup:
+			case SpecialFolder.Cookies:
+			case SpecialFolder.History:
+			case SpecialFolder.Recent:
+			case SpecialFolder.CommonProgramFiles:
+			case SpecialFolder.System:
+			case SpecialFolder.NetworkShortcuts:
+			case SpecialFolder.CommonStartMenu:
+			case SpecialFolder.CommonPrograms:
+			case SpecialFolder.CommonStartup:
+			case SpecialFolder.CommonDesktopDirectory:
+			case SpecialFolder.PrinterShortcuts:
+			case SpecialFolder.Windows:
+			case SpecialFolder.SystemX86:
+			case SpecialFolder.ProgramFilesX86:
+			case SpecialFolder.CommonProgramFilesX86:
+			case SpecialFolder.CommonDocuments:
+			case SpecialFolder.CommonAdminTools:
+			case SpecialFolder.AdminTools:
+			case SpecialFolder.CommonMusic:
+			case SpecialFolder.CommonPictures:
+			case SpecialFolder.CommonVideos:
+			case SpecialFolder.LocalizedResources:
+			case SpecialFolder.CommonOemLinks:
+			case SpecialFolder.CDBurning:
+				return String.Empty;
+			
+			// personal == ~
+			case SpecialFolder.Personal:
+			case SpecialFolder.LocalApplicationData:
+				return NSDocumentDirectory;
+
+			case SpecialFolder.ApplicationData:
+				// note: at first glance that looked like a good place to return NSLibraryDirectory 
+				// but it would break isolated storage for existing applications
+				return Path.Combine (NSDocumentDirectory, ".config");
+
+			case SpecialFolder.Resources:
+				return NSLibraryDirectory; // older (8.2 and previous) would return String.Empty
+
+			case SpecialFolder.Desktop:
+			case SpecialFolder.DesktopDirectory:
+				return Path.Combine (NSDocumentDirectory, "Desktop");
+
+			case SpecialFolder.MyMusic:
+				return Path.Combine (NSDocumentDirectory, "Music");
+
+			case SpecialFolder.MyPictures:
+				return Path.Combine (NSDocumentDirectory, "Pictures");
+
+			case SpecialFolder.Templates:
+				return Path.Combine (NSDocumentDirectory, "Templates");
+
+			case SpecialFolder.MyVideos:
+				return Path.Combine (NSDocumentDirectory, "Videos");
+
+			case SpecialFolder.CommonTemplates:
+				return "/usr/share/templates";
+
+			case SpecialFolder.Fonts:
+				return Path.Combine (NSDocumentDirectory, ".fonts");
+
+			case SpecialFolder.Favorites:
+				return Path.Combine (NSLibraryDirectory, "Favorites");
+
+			case SpecialFolder.ProgramFiles:
+				return "/Applications";
+
+			case SpecialFolder.InternetCache:
+				return Path.Combine (NSLibraryDirectory, "Caches");
+
+			case SpecialFolder.UserProfile:
+				return internalGetHome ();
+
+			case SpecialFolder.CommonApplicationData:
+				return "/usr/share";
+
+			default:
+				throw new ArgumentException ("Invalid SpecialFolder");
+			}
+		}
+	}
+}