Add Markov abstract base class

src/Markov.hpp

@@ -0,0 +1,28 @@
+#ifndef MARKOV_HPP
+#define MARKOV_HPP
+
+#include <string>
+
+
+class Markov
+{
+public:
+	virtual ~Markov();
+	
+	// loading and saving of internal state to files
+	virtual void load(std::string filename) =0;
+	virtual void save(std::string filename) =0;
+	
+	void eat(std::string filename); // gobble up a file
+	void swallow(std::string& text); // ingest text to later regurgitate
+	virtual void throwUp() =0; // empty the belly of previous text
+	
+	// generate new text from previously eaten text
+	std::string regurgitate(int lines=1, std::string start="");
+	
+protected:
+	virtual void swallowLine(std::string line) =0;
+	virtual std::string regurgitateLine(std::string start="") =0;
+};
+
+#endif