intermediate: externalize config definitions

lib/config/GwConfigItem.h

@@ -0,0 +1,52 @@
+#ifndef _GWCONFIGITEM_H
+#define _GWCONFIGITEM_H
+#include "WString.h"
+class GwConfigInterface{
+    public:
+    virtual String asString() const=0;
+    virtual const char * asCString() const =0;
+    virtual bool asBoolean() const = 0;
+    virtual int asInt() const = 0;
+};
+class GwConfigItem: public GwConfigInterface{
+    private:
+        String name;
+        String initialValue;
+        String value;
+    public:
+        GwConfigItem(const String &name, const String initialValue){
+            this->name=name;
+            this->initialValue=initialValue;
+            this->value=initialValue;
+        }
+        virtual String asString() const{
+            return value;
+        }
+        virtual const char * asCString() const{
+            return value.c_str();
+        };
+        virtual void fromString(const String v){
+            value=v;
+        };
+        virtual bool asBoolean() const{
+            return strcasecmp(value.c_str(),"true") == 0;
+        }
+        virtual int asInt() const{
+            return (int)value.toInt();
+        }
+        String getName() const{
+            return name;
+        }
+        virtual void reset(){
+            value=initialValue;
+        }
+        bool changed() const{
+            return value != initialValue;
+        }
+        String getDefault() const {
+            return initialValue;
+        }
+};
+
+
+#endif