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SPACE 1
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SPACE - Library 1 - Volume 1.iso
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356
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defs
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streams.def
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1992-03-11
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DEFINITION MODULE Streams;
(*
* Copyright (c) 1985, 1986 by
* Djavaheri Bros., Foster City, California.
* All Rights Reserved.
*
* This software is furnished under a license and may be used and copied
* only in accordance with the terms of such license and with the
* inclusion of the above copyright notice. This software or any other
* copies thereof may not be provided or otherwise made available to any
* other person. No title to and ownership of the software is herby
* transferred.
*
* The information in this software is subject to change without notice
* and should not be construed as a commitment by Djavaheri Bros. No
* warranty is implied or expressed.
* SCCID = "1.1 1/26/86";
*)
FROM SYSTEM IMPORT
WORD, ADR;
FROM Files IMPORT
File, FileState;
EXPORT QUALIFIED
Connect, Disconnect, ResetStream, WriteWord, WriteChar,
EndWrite, ReadWord, ReadChar, EOS, STREAM;
TYPE
StreamType = RECORD
f : File;
isWordStream : BOOLEAN;
END;
STREAM = POINTER TO StreamType;
PROCEDURE Connect(VAR s : STREAM;
f : File;
ws: BOOLEAN);
(* ws = TRUE : word stream;
ws = FALSE: text stream; *)
PROCEDURE Disconnect(VAR s : STREAM;
closefile: BOOLEAN);
(* disconnect STREAM s from the file connected by routine Connect.
closefile = TRUE then the disconnected file will be closed.
closefile = FALSE then the disconnected file is still open. *)
PROCEDURE ResetStream(s: STREAM);
(* reset s *)
PROCEDURE WriteWord(s: STREAM; w: WORD);
PROCEDURE WriteChar(s: STREAM; ch: CHAR);
PROCEDURE EndWrite(s: STREAM);
(* finish writing the stream *)
PROCEDURE ReadWord(s: STREAM; VAR w: WORD);
PROCEDURE ReadChar(s: STREAM; VAR ch: CHAR);
PROCEDURE EOS(s: STREAM): BOOLEAN;
(* check End_of_STREAM *)
END Streams.