# include <iostream.h>
# include <fstream.h>

# include "icecream.C"
# include "string.C"
# include "rstream.h"
# include "rstream.c"

unsigned int hf(const iceCreamRecord & x)
{
	string name(x.name());
	return name[2] - 'a';
}

# include "openHashTable.h"
# include "openHashTable.c"

template <class T>
class openHashTableIterator : public rstreamIterator<T> {
public:
	openHashTableIterator(openHashTable<T> &);
	virtual int 	operator ++ 	();
};

template <class T>
openHashTableIterator<T>::openHashTableIterator(openHashTable<T> & t)
		: rstreamIterator<T>(t.rfile) 
{ 
	// nothing more
}

template <class T>
int openHashTableIterator<T>::operator ++()
{
	if (rstreamIterator<T>::operator ++() == 0)
		return 0;
	if (isEmpty(operator()()))
		return operator ++ ();
	return 1;
}

openHashTable<iceCreamRecord> hashtab("/tmp/openHashTableFile", hf);
openHashTableIterator<iceCreamRecord> itr(hashtab);

string iceCreamFlavor(const string name)
{
	// make entry with name but no known flavor
	iceCreamRecord rec(name, "");
	// read database
	if (hashtab.includes(rec))
		return rec.flavor();
	return "not in database";
}

int main() 
{
	for (itr.init(); ! itr; itr++) {
		cout << " for " << itr().name() ;
		cout << " flavor " << itr().flavor() << "\n";
		}
# if 0
	cout << "for fred  " << iceCreamFlavor("fred") << '\n';
	cout << "for alex " << iceCreamFlavor("alex") << '\n';
	cout << "for amanda "  << iceCreamFlavor("amanda") << '\n';
	cout << "for albert " << iceCreamFlavor("albert") << '\n';
	cout << "for alice " << iceCreamFlavor("alice") << '\n';
	cout << "for amy " << iceCreamFlavor("amy") << '\n';
	cout << "for anne " << iceCreamFlavor("anne") << '\n';
	cout << "for alfred " << iceCreamFlavor("alfred") << '\n';
	cout << "for andy " << iceCreamFlavor("andy") << '\n';
	cout << "for arthur " << iceCreamFlavor("arthur") << '\n';
	cout << "for abraham " << iceCreamFlavor("abraham") << '\n';

	cout << "deleting amy \n ";
	hashtab.remove(iceCreamRecord("amy",""));

	cout << "for fred  " << iceCreamFlavor("fred") << '\n';
	cout << "for alex " << iceCreamFlavor("alex") << '\n';
	cout << "for amanda "  << iceCreamFlavor("amanda") << '\n';
	cout << "for albert " << iceCreamFlavor("albert") << '\n';
	cout << "for alice " << iceCreamFlavor("alice") << '\n';
	cout << "for amy " << iceCreamFlavor("amy") << '\n';
	cout << "for anne " << iceCreamFlavor("anne") << '\n';
	cout << "for alfred " << iceCreamFlavor("alfred") << '\n';
	cout << "for andy " << iceCreamFlavor("andy") << '\n';
	cout << "for arthur " << iceCreamFlavor("arthur") << '\n';
	cout << "for abraham " << iceCreamFlavor("abraham") << '\n';
# endif

	return 0;
}