#ifndef UT_PAIR_H
#define UT_PAIR_H

#include <stdlib.h>
class UT_Pair
{
public:

    UT_Pair();
    ~UT_Pair();
    
    /*NULL is returned if item not found. */
    const char *getFirst(const char *s)	 const;
    const char *getSecond(const char *s) const;
    void  add(const char *f, const char *s);    
    
    struct pair_data
    {
	const char* s1,*s2;
    };
    
    /*the array is terminated by record with s1 or s2 == NULL*/    
    void add(const pair_data* items);
    size_t size() 		const;
    const char* nth1(size_t idx) const;
    const char* nth2(size_t idx) const;    
    void clear();
private:
    int m_n;
    char **m_first;
    char **m_second;
};

#endif