Updated Utilities

Utilities/IFileSystem/FileSystem.cs

@@ -22,6 +22,17 @@ namespace Utilities
             return ListEntriesInDirectory(@"\");
         }
 
+        public virtual List<KeyValuePair<string, ulong>> ListDataStreams(string path)
+        {
+            FileSystemEntry entry = GetEntry(path);
+            List<KeyValuePair<string, ulong>> result = new List<KeyValuePair<string, ulong>>();
+            if (!entry.IsDirectory)
+            {
+                result.Add(new KeyValuePair<string, ulong>("::$DATA", entry.Size));
+            }
+            return result;
+        }
+
         public Stream OpenFile(string path, FileMode mode, FileAccess access, FileShare share)
         {
             return OpenFile(path, mode, access, share, FileOptions.None);
@@ -59,6 +70,24 @@ namespace Utilities
             destinationStream.Close();
         }
 
+        public virtual bool Exists(string path)
+        {
+            try
+            {
+                GetEntry(path);
+            }
+            catch (FileNotFoundException)
+            {
+                return false;
+            }
+            catch (DirectoryNotFoundException)
+            {
+                return false;
+            }
+
+            return true;
+        }
+
         public abstract string Name
         {
             get;

Utilities/IFileSystem/IFileSystem.cs

@@ -7,6 +7,8 @@ namespace Utilities
     public interface IFileSystem
     {
         /// <exception cref="System.ArgumentException"></exception>
+        /// <exception cref="System.IO.DirectoryNotFoundException"></exception>
+        /// <exception cref="System.IO.FileNotFoundException"></exception>
         /// <exception cref="System.IO.IOException"></exception>
         /// <exception cref="System.UnauthorizedAccessException"></exception>
         FileSystemEntry GetEntry(string path);
@@ -48,6 +50,13 @@ namespace Utilities
         /// <exception cref="System.IO.FileNotFoundException"></exception>
         /// <exception cref="System.IO.IOException"></exception>
         /// <exception cref="System.UnauthorizedAccessException"></exception>
+        List<KeyValuePair<string, ulong>> ListDataStreams(string path);
+
+        /// <exception cref="System.ArgumentException"></exception>
+        /// <exception cref="System.IO.DirectoryNotFoundException"></exception>
+        /// <exception cref="System.IO.FileNotFoundException"></exception>
+        /// <exception cref="System.IO.IOException"></exception>
+        /// <exception cref="System.UnauthorizedAccessException"></exception>
         Stream OpenFile(string path, FileMode mode, FileAccess access, FileShare share, FileOptions options);
 
         /// <exception cref="System.ArgumentException"></exception>