home *** CD-ROM | disk | FTP | other *** search
Modula Definition | 1987-10-11 | 1.6 KB | 72 lines |
- DEFINITION MODULE Terminal;
-
- (* (C) Copyright 1987 Fitted Software Tools. All rights reserved. *)
-
- (*
- All the actual I/O is performed by invoking a procedure from TermBase.
-
- The client module may redirect the terminal I/O by using the procedures
- provided for that effect in TermBase.
- *)
-
-
- PROCEDURE KeyPressed() :BOOLEAN;
- (*
- is there any input available?
- *)
-
- PROCEDURE Read( VAR ch :CHAR );
- (*
- return the next input character using TermBase.Read
- *)
-
- PROCEDURE ReadLine( VAR string :ARRAY OF CHAR );
- (*
- read a whole line (using Read), echoing the characters read except for
- the terminating character (EOL or ESC).
-
- ASCII.BS will cause the last character read to be deleted.
- ASCII.DEL will cause all characters read to be deleted.
- ASCII.ESC will cause all characters read to be deleted and the input
- is terminated.
-
- ReadAgain followed by Read can be used to get the terminating character
- (EOL or ESC).
- *)
-
- PROCEDURE ReadAgain;
- (*
- force the next call to Read to return the last character read again
- *)
-
- PROCEDURE Write( ch :CHAR );
- (*
- write ch through TermBase.Write
- *)
-
- PROCEDURE WriteString( string :ARRAY OF CHAR );
- (*
- write the string using Write.
- *)
-
- PROCEDURE WriteLn;
- (*
- same as: Write( ASCII.EOL )
- *)
-
- PROCEDURE WriteLine( string :ARRAY OF CHAR );
- (*
- same as: WriteString( string ); WriteLn;
- *)
-
- PROCEDURE ClrScreen;
- (*
- same as: Write( ASCII.FF )
- *)
-
- PROCEDURE Goto( line, pos :CARDINAL );
- (*
- TermBase.Goto( line, pos )
- *)
-
- END Terminal.