Added IFileInvoker

OSCADSharp/OSCADSharp/OSCADSharp.csproj

@@ -43,6 +43,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Scripting\DefaultFileWriter.cs" />
+    <Compile Include="Scripting\IFileInvoker.cs" />
     <Compile Include="Scripting\IFileWriter.cs" />
     <Compile Include="Ids.cs" />
     <Compile Include="Scripting\StatementBuilder.cs" />

OSCADSharp/OSCADSharp/Scripting/IFileInvoker.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OSCADSharp.Scripting
+{
+    /// <summary>
+    /// Opens a file
+    /// </summary>
+    public interface IFileInvoker
+    {
+        /// <summary>
+        /// Opens the specified file
+        /// </summary>
+        /// <param name="path">Path to the file to open</param>
+        /// <param name="arguments">Command-line arguments to pass in</param>
+        void Invoke(string path, string arguments = null);
+    }
+}