(* Copyright (C) 1987 Jensen & Partners International *)
DEFINITION MODULE IO;

CONST
  MaxRdLength = 256;

TYPE
  WrStrType   = PROCEDURE ( ARRAY OF CHAR );
  RdStrType   = PROCEDURE ( VAR ARRAY OF CHAR );
  CHARSET     = SET OF CHAR;


PROCEDURE WrChar   ( V: CHAR );
PROCEDURE WrBool   ( V: BOOLEAN  ; Length: INTEGER );
PROCEDURE WrShtInt ( V: SHORTINT ; Length: INTEGER );
PROCEDURE WrInt    ( V: INTEGER  ; Length: INTEGER );
PROCEDURE WrLngInt ( V: LONGINT  ; Length: INTEGER );
PROCEDURE WrShtCard( V: SHORTCARD; Length: INTEGER );
PROCEDURE WrCard   ( V: CARDINAL ; Length: INTEGER );
PROCEDURE WrLngCard( V: LONGCARD ; Length: INTEGER );
PROCEDURE WrShtHex ( V: SHORTCARD; Length: INTEGER );
PROCEDURE WrHex    ( V: CARDINAL ; Length: INTEGER );
PROCEDURE WrLngHex ( V: LONGCARD ; Length: INTEGER );

PROCEDURE WrReal   ( V: REAL     ; Precision: CARDINAL; Length: INTEGER);
PROCEDURE WrLngReal( V: LONGREAL ; Precision: CARDINAL; Length: INTEGER);

PROCEDURE WrCharRep( V: CHAR ; Count: CARDINAL );

PROCEDURE WrStr    ( S: ARRAY OF CHAR );

PROCEDURE WrStrAdj ( S: ARRAY OF CHAR; Length: INTEGER );

PROCEDURE WrLn;


PROCEDURE RdChar()    : CHAR;
PROCEDURE RdBool()    : BOOLEAN;
PROCEDURE RdShtInt()  : SHORTINT;
PROCEDURE RdInt()     : INTEGER;
PROCEDURE RdLngInt()  : LONGINT;
PROCEDURE RdShtCard() : SHORTCARD;
PROCEDURE RdCard()    : CARDINAL;
PROCEDURE RdLngCard() : LONGCARD;
PROCEDURE RdShtHex()  : SHORTCARD;
PROCEDURE RdHex()     : CARDINAL;
PROCEDURE RdLngHex()  : LONGCARD;

PROCEDURE RdReal()    : REAL;
PROCEDURE RdLngReal() : LONGREAL;

PROCEDURE RdStr(VAR S: ARRAY OF CHAR);

PROCEDURE RdItem(VAR V: ARRAY OF CHAR);
PROCEDURE RdLn;

PROCEDURE EndOfRd(Skip: BOOLEAN) : BOOLEAN;


PROCEDURE KeyPressed() : BOOLEAN;

PROCEDURE RdKey() : CHAR;
CONST RdCharDirect ::= RdKey;

PROCEDURE RedirectInput (FileName: ARRAY OF CHAR);

PROCEDURE RedirectOutput(FileName: ARRAY OF CHAR);


VAR RdLnOnWr      : BOOLEAN;      (* Clear buffered input after write     *)
VAR Prompt        : BOOLEAN;      (* Prompt ('?') on read from empty line *)
VAR WrStrRedirect : WrStrType;
VAR RdStrRedirect : RdStrType;

VAR Separators  : CHARSET;
VAR OK          : BOOLEAN;
VAR ChopOff     : BOOLEAN;
VAR Eng         : BOOLEAN;      (* Engineering notation *)


END IO.