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Modula Definition | 1989-01-09 | 2.1 KB | 65 lines |
- DEFINITION MODULE Streams;
- (*
- * Copyright (c) 1985,1986,1987,1988,1989 by
- * ana-systems, 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 ana-systems. 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.
-