1 files changed, 55 insertions, 0 deletions

diff --git a/src/tools/heat/Extensibility/BaseHeatExtension.cs b/src/tools/heat/Extensibility/BaseHeatExtension.cs
new file mode 100644
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+++ b/src/tools/heat/Extensibility/BaseHeatExtension.cs
@@ -0,0 +1,55 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Harvesters.Extensibility
+{
+    using System;
+    using WixToolset.Harvesters.Data;
+
+    /// <summary>
+    /// An extension for the WiX Toolset Harvester application.
+    /// </summary>
+    public abstract class BaseHeatExtension : IHeatExtension
+    {
+        /// <summary>
+        /// Gets or sets the heat core for the extension.
+        /// </summary>
+        /// <value>The heat core for the extension.</value>
+        public IHeatCore Core { get; set; }
+
+        /// <summary>
+        /// Gets the supported command line types for this extension.
+        /// </summary>
+        /// <value>The supported command line types for this extension.</value>
+        public virtual HeatCommandLineOption[] CommandLineTypes
+        {
+            get { return null; }
+        }
+
+        /// <summary>
+        /// Parse the command line options for this extension.
+        /// </summary>
+        /// <param name="type">The active harvester type.</param>
+        /// <param name="args">The option arguments.</param>
+        public virtual void ParseOptions(string type, string[] args)
+        {
+        }
+
+        /// <summary>
+        /// Determines if the index refers to an argument.
+        /// </summary>
+        /// <param name="args"></param>
+        /// <param name="index"></param>
+        /// <returns></returns>
+        public static bool IsValidArg(string[] args, int index)
+        {
+            if (args.Length <= index || String.IsNullOrEmpty(args[index]) || '/' == args[index][0] || '-' == args[index][0])
+            {
+                return false;
+            }
+            else
+            {
+                return true;
+            }
+        }
+    }
+}