/* Input driver header */

#include <setjmp.h>

extern jmp_buf throw_jmp_buf;

#ifdef MSDOS
#  define prep_terminal()
#  define deprep_terminal()
#  define install_signal_handlers()

#  include <conio.h>

#  define key()		getch()
#  define key_query       FLAG(kbhit())
#else
unsigned char getkey(FILE *);
long key_avail(FILE *);
void prep_terminal();
void deprep_terminal();
void install_signal_handlers(void);

#  define key()		getkey(stdin)
#  define key_query	-(!!key_avail(stdin)) /* !! FLAG(...)? - anton */
         		/* flag was originally wrong -- lennart */
#endif