Make -a command line optional, fix #include's, disable warnings.

src/Generator/CodeGenerator.cs

@@ -185,8 +185,7 @@ namespace Cxxi
 
             if (string.IsNullOrWhiteSpace(path))
             {
-                Console.WriteLine("Error: no assembly provided");
-                return false;
+                return true;
             }
 
             try
@@ -221,6 +220,12 @@ namespace Cxxi
             if (!ParseCommandLineOptions(args, options))
                 return;
 
+            // We need to know absolute pathes in order to determine correct include pathes.
+            for (int i = 0; i < options.IncludeDirs.Count; i++)
+            {
+                if (options.IncludeDirs[i] == ".") options.IncludeDirs[i] = Directory.GetCurrentDirectory();
+            }
+
             ILibrary library = null;
             if (!ParseLibraryAssembly(options.Assembly, out library))
                 return;

src/Generator/Generators/CLI/CLIHelpers.cs

@@ -404,12 +404,24 @@ namespace Cxxi.Generators.CLI
 
         public void GenerateStart()
         {
-            Transform.GenerateStart(this);
+            if( Transform == null)
+            {
+                WriteLine("//----------------------------------------------------------------------------");
+                WriteLine("// This is autogenerated code by cxxi-generator.");
+                WriteLine("// Do not edit this file or all your changes will be lost after re-generation.");
+                WriteLine("//----------------------------------------------------------------------------");
+                
+                if( FileExtension == "cpp" )
+                    WriteLine(@"#include ""interop.h""          // marshalString");
+                
+            }else
+                Transform.GenerateStart(this);
         }
 
         public void GenerateAfterNamespaces()
         {
-            Transform.GenerateAfterNamespaces(this);
+            if (Transform != null)
+                Transform.GenerateAfterNamespaces(this);
         }
 
         public void GenerateSummary(string comment)

src/Generator/Transforms/Transform.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.IO;
 
 namespace Cxxi.Passes
 {
@@ -21,6 +22,7 @@ namespace Cxxi.Passes
         string GetIncludePath(string filePath)
         {
             string includePath = filePath;
+            string ShortestIncludePath = filePath;
 
             foreach (var path in Options.IncludeDirs)
             {
@@ -29,11 +31,11 @@ namespace Cxxi.Passes
 
                 string inc = filePath.Substring(path.Length);
 
-                if (inc.Length < includePath.Length)
-                    includePath = inc;
+                if (inc.Length < includePath.Length && inc.Length < ShortestIncludePath.Length)
+                    ShortestIncludePath = inc;
             }
 
-            return includePath.TrimStart(new char[] { '\\', '/' });
+            return "..\\" + ShortestIncludePath.TrimStart(new char[] { '\\', '/' });
         }
 
         void TransformModule(TranslationUnit unit)