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(* $Id: In.Mod,v 1.5 1999/10/31 13:53:27 ooc-devel Exp $ *)
MODULE In;
(*
In - Simple terminal input of Oberon variables.
Copyright (C) 1997 Michael Griebling
This module is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This module is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*)
IMPORT
StdChannels, TextRider;
VAR
reader-: TextRider.Reader;
(* This is the rider used by the input procedures. Initialized to hold a
text reader on the `StdChannels.stdin' channel. Can be changed by
calling SetReader. *)
PROCEDURE Done* () : BOOLEAN;
(* Returns TRUE if the last operation was successful. *)
BEGIN
RETURN (reader. res = TextRider.done)
END Done;
PROCEDURE ClearError*;
BEGIN
reader. ClearError
END ClearError;
PROCEDURE SetReader* (r: TextRider.Reader);
(* Changes the rider `reader'. All following calls to input procedures will
write to `r'. *)
BEGIN
IF r=NIL THEN reader:=TextRider.ConnectReader(StdChannels.stdin)
ELSE reader := r
END
END SetReader;
PROCEDURE Char* (VAR ch: CHAR);
BEGIN
reader. ReadChar (ch);
END Char;
PROCEDURE Line* (VAR s: ARRAY OF CHAR);
BEGIN
reader. ReadLine (s)
END Line;
PROCEDURE String* (VAR s: ARRAY OF CHAR);
BEGIN
reader. ReadString (s)
END String;
PROCEDURE Identifier* (VAR s: ARRAY OF CHAR);
BEGIN
reader. ReadIdentifier (s)
END Identifier;
PROCEDURE Bool* (VAR bool: BOOLEAN);
BEGIN
reader. ReadBool (bool)
END Bool;
PROCEDURE ShortInt* (VAR int: SHORTINT);
BEGIN
reader. ReadSInt (int)
END ShortInt;
PROCEDURE Int* (VAR int: INTEGER);
BEGIN
reader. ReadInt (int)
END Int;
PROCEDURE LongInt* (VAR lint: LONGINT);
BEGIN
reader. ReadLInt (lint)
END LongInt;
PROCEDURE Hex* (VAR lint: LONGINT);
BEGIN
reader. ReadHex (lint)
END Hex;
PROCEDURE LongReal* (VAR lreal: LONGREAL);
BEGIN
reader. ReadLReal (lreal)
END LongReal;
PROCEDURE Real* (VAR real: REAL);
BEGIN
reader. ReadReal (real)
END Real;
PROCEDURE Set* (VAR s: SET);
BEGIN
reader. ReadSet (s)
END Set;
BEGIN
SetReader(NIL)
END In.
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