DEFINITION MODULE FOR "C" tvtty;

(* Minimal libc binding used by the terminal backend.  This is the only
   non-Modula-2 dependency of the TVision-style library: the ISO language
   has no way to put a tty in raw mode or to query its size, so we call
   tcgetattr/tcsetattr/ioctl/read/write directly.  Everything else is plain
   GNU Modula-2. *)

FROM SYSTEM IMPORT ADDRESS;

EXPORT UNQUALIFIED tcgetattr, tcsetattr, ioctl, read, write, signal,
                    fopen, fgets, fputs, fputc, fclose;

PROCEDURE tcgetattr(fd : INTEGER; termios : ADDRESS) : INTEGER;
PROCEDURE tcsetattr(fd, action : INTEGER; termios : ADDRESS) : INTEGER;
PROCEDURE ioctl(fd : INTEGER; request : CARDINAL; arg : ADDRESS) : INTEGER;
PROCEDURE read(fd : INTEGER; buf : ADDRESS; count : CARDINAL) : INTEGER;
PROCEDURE write(fd : INTEGER; buf : ADDRESS; count : CARDINAL) : INTEGER;
PROCEDURE signal(sig : INTEGER; handler : ADDRESS) : ADDRESS;
PROCEDURE fopen(path, mode : ARRAY OF CHAR) : ADDRESS;
PROCEDURE fgets(buf : ADDRESS; n : INTEGER; f : ADDRESS) : ADDRESS;
PROCEDURE fputs(s : ARRAY OF CHAR; f : ADDRESS) : INTEGER;
PROCEDURE fputc(c : INTEGER; f : ADDRESS) : INTEGER;
PROCEDURE fclose(f : ADDRESS) : INTEGER;

END tvtty.