#ifndef SortKey_SEEN__
#define SortKey_SEEN__
///////    File: SortKey.h    ///////
#define DELIM "\t \r"   /* default key delimiters */
typedef char *String;
typedef unsigned int Uint;

class SortKey
{ public:
     SortKey(Uint pos = 0, String dlm = DELIM)
     {  delim = dlm;
        position = pos;
     }
     int cmp(const char *a, const char *b);    // compare lines
     int cmp(void* k, const char *b);          // compare key to line
  private:
     String delim;
     Uint   position;
     const char *key(const char *s);           // identify key
     int is_del(const char* c);                // delimiter test
     int keycmp(const char *a, const char *b); // compare keys
};
#endif