Imported Upstream version 5.0.0.42

Former-commit-id: fd56571888259555122d8a0f58c68838229cea2b

external/linker/cecil/Mono.Cecil.PE/BinaryStreamReader.cs

@@ -0,0 +1,47 @@
+//
+// Author:
+//   Jb Evain (jbevain@gmail.com)
+//
+// Copyright (c) 2008 - 2015 Jb Evain
+// Copyright (c) 2008 - 2011 Novell, Inc.
+//
+// Licensed under the MIT/X11 license.
+//
+
+using System;
+using System.IO;
+
+namespace Mono.Cecil.PE {
+
+	class BinaryStreamReader : BinaryReader {
+
+		public int Position {
+			get { return (int) BaseStream.Position; }
+			set { BaseStream.Position = value; }
+		}
+
+		public int Length {
+			get { return (int) BaseStream.Length; }
+		}
+
+		public BinaryStreamReader (Stream stream)
+			: base (stream)
+		{
+		}
+
+		public void Advance (int bytes)
+		{
+			BaseStream.Seek (bytes, SeekOrigin.Current);
+		}
+
+		public void MoveTo (uint position)
+		{
+			BaseStream.Seek (position, SeekOrigin.Begin);
+		}
+
+		public DataDirectory ReadDataDirectory ()
+		{
+			return new DataDirectory (ReadUInt32 (), ReadUInt32 ());
+		}
+	}
+}