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(* $Id: Out.Mod,v 1.7 1999/10/31 13:53:33 ooc-devel Exp $ *)
MODULE Out [OOC_EXTENSIONS];
(*
Out - Simple terminal output 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
writer-: TextRider.Writer;
(* This is the rider used by the output procedures. Initialized to hold a
text writer to the `StdChannels.stdout' channel. Can be changed by
calling SetWriter. *)
PROCEDURE Done* () : BOOLEAN;
(* Returns TRUE if the last operation was successful. *)
BEGIN
RETURN (writer.res = TextRider.done)
END Done;
PROCEDURE ClearError*;
BEGIN
writer. ClearError
END ClearError;
PROCEDURE SetWriter* (w: TextRider.Writer);
(* Changes the rider `writer'. All following calls to output procedures will
write to `w'. The preferred method of connecting to the standard output
channel is with a call like SetWriter(NIL). NOTE: If interactive input
is desired, ensure that the writer output buffering is turned off as
follows:
Out.writer.SetOpts({TextRider.noBuffering})
*)
BEGIN
IF w=NIL THEN writer:=TextRider.ConnectWriter (StdChannels.stdout)
ELSE writer:=w
END
END SetWriter;
PROCEDURE Flush*;
(* Flushes all buffers associated with `writer'. *)
BEGIN
writer. base. Flush
END Flush;
PROCEDURE Char* (ch: CHAR);
BEGIN
writer. WriteChar (ch)
END Char;
PROCEDURE String* (s[NO_COPY]: ARRAY OF CHAR);
BEGIN
writer. WriteString (s)
END String;
PROCEDURE Bool* (bool: BOOLEAN);
BEGIN
writer. WriteBool (bool)
END Bool;
PROCEDURE LongInt* (lint: LONGINT; n: LONGINT);
BEGIN
writer. WriteLInt (lint, n)
END LongInt;
PROCEDURE ShortInt* (sint: SHORTINT; n: LONGINT);
BEGIN
writer. WriteSInt (sint, n)
END ShortInt;
PROCEDURE Int* (int: INTEGER; n: LONGINT);
BEGIN
writer. WriteInt (int, n)
END Int;
PROCEDURE Hex* (lint: LONGINT; n: LONGINT);
BEGIN
writer. WriteHex (lint, n)
END Hex;
PROCEDURE LongReal* (lreal: LONGREAL; n, k: LONGINT);
(* Write `lreal' with `k' significant digits and right-justified
in a field of width n. *)
BEGIN
writer. WriteLReal (lreal, n, k)
END LongReal;
PROCEDURE Real* (real: REAL; n, k: LONGINT);
(* as LongReal *)
BEGIN
writer. WriteReal (real, n, k)
END Real;
PROCEDURE LongRealFix* (lreal: LONGREAL; n, k: LONGINT);
(* Write `lreal' rounded to `k' digits relative to the decimal
point and right-justified in a field of width n. Negative
values of `k' round to the left of the decimal point and
positive `k' round to the right of the decimal point. *)
BEGIN
writer. WriteLRealFix (lreal, n, k)
END LongRealFix;
PROCEDURE RealFix* (real: REAL; n, k: LONGINT);
(* as LongRealFix *)
BEGIN
writer. WriteRealFix (real, n, k)
END RealFix;
PROCEDURE LongRealEng* (lreal: LONGREAL; n, k: LONGINT);
(* as LongReal except exponent is always a multiple of
3 and there are 1 to 3 digits to the left of the
decimal point. *)
BEGIN
writer. WriteLRealEng (lreal, n, k)
END LongRealEng;
PROCEDURE RealEng* (real: REAL; n, k: LONGINT);
(* as LongRealEng *)
BEGIN
writer. WriteRealEng (real, n, k)
END RealEng;
PROCEDURE Set* (s: SET);
BEGIN
writer. WriteSet (s)
END Set;
PROCEDURE Ln*;
BEGIN
writer. WriteLn
END Ln;
BEGIN
SetWriter(NIL)
END Out.
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