JSON file changes

MFile.h

@@ -0,0 +1,35 @@
+#ifndef __MFile_h__
+#define __MFile_h__
+
+#include "MString.h"
+#include <fstream>
+#include <iostream>
+
+///
+/// MFile
+///
+/// An MString with a file backing store.
+///
+
+namespace coreutils {
+
+   class MFile : public MString {
+
+    public:
+      MFile(MString fileName);
+      virtual ~MFile();
+
+      coreutils::MString fileName;
+      
+    private:
+      std::ifstream inFile;
+      std::ofstream outFile;
+
+      void onChange() override;
+      void update();
+      
+   };
+
+}
+
+#endif