add common access check method to utils

Author: maxijabase

UI/MainWindow/MainWindow.xaml.cs

@@ -353,11 +353,7 @@ public bool TryLoadSourceFile(string filePath, out EditorElement outEditor, bool
                     fileInfo.Extension == ".ini")
                 {
                     var finalPath = fileInfo.FullName;
-                    try
-                    {
-                        File.GetAccessControl(finalPath);
-                    }
-                    catch (UnauthorizedAccessException)
+                    if (!DirUtils.CanAccess(finalPath))
                     {
                         return false;
                     }

UI/MainWindow/MainWindowObjectBrowser.cs

@@ -502,11 +502,7 @@ private void ChangeObjectBrowserToDirectory(string dir)
             {
                 dir = Environment.CurrentDirectory;
             }
-            try
-            {
-                Directory.GetAccessControl(dir);
-            }
-            catch (UnauthorizedAccessException)
+            if (!DirUtils.CanAccess(dir))
             {
                 return;
             }
@@ -613,15 +609,7 @@ private List<TreeViewItem> BuildDirectoryItems(string dir, out List<TreeViewItem
                 if (attr.HasFlag(FileAttributes.Directory))
                 {
                     var dInfo = new DirectoryInfo(item);
-                    if (!dInfo.Exists)
-                    {
-                        continue;
-                    }
-                    try
-                    {
-                        dInfo.GetAccessControl();
-                    }
-                    catch (UnauthorizedAccessException)
+                    if (!dInfo.Exists || !DirUtils.CanAccess(dInfo))
                     {
                         continue;
                     }

Utils/DirUtils.cs

@@ -1,10 +1,11 @@
-using System.IO;
+using System;
+using System.IO;
 
 namespace SPCode.Utils
 {
     public static class DirUtils
     {
-        public static void ClearTempFolder()
+        public static void ClearSPCodeTempFolder()
         {
             var tempDir = PathsHelper.TempDirectory;
             foreach (var file in Directory.GetFiles(tempDir))
@@ -16,5 +17,31 @@ public static void ClearTempFolder()
                 Directory.Delete(dir, true);
             }
         }
+
+        public static bool CanAccess(string path)
+        {
+            try
+            {
+                Directory.GetAccessControl(path);
+            }
+            catch (UnauthorizedAccessException)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public static bool CanAccess(DirectoryInfo dir)
+        {
+            try
+            {
+                dir.GetAccessControl();
+            }
+            catch (UnauthorizedAccessException)
+            {
+                return false;
+            }
+            return true;
+        }
     }
 }