+ added unit System.Terminal.InputOutputConnection

packages/fcl-fpterm/fpmake.pp

@@ -42,6 +42,8 @@ begin
         AddUnit('system.terminal.view');
       end;
 
+    T:=P.Targets.AddUnit('system.terminal.inputoutputconnection.pas');
+
     //P.NamespaceMap:='namespaces.lst';
 
 {$ifndef ALLPACKAGES}

packages/fcl-fpterm/src/system.terminal.inputoutputconnection.pas

@@ -0,0 +1,59 @@
+{ This file is part of fpterm - a terminal emulator, written in Free Pascal
+
+  This unit defines the basic abstract input/output connection of the terminal.
+  This could be a serial port, an Unix-like pseudoterminal, a telnet, an SSH
+  connection, etc.
+
+  Copyright (C) 2024 Nikolay Nikolov <[email protected]>
+
+  This library is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Library General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or (at your
+  option) any later version with the following modification:
+
+  As a special exception, the copyright holders of this library give you
+  permission to link this library with independent modules to produce an
+  executable, regardless of the license terms of these independent modules,and
+  to copy and distribute the resulting executable under terms of your choice,
+  provided that you also meet, for each linked independent module, the terms
+  and conditions of the license of that module. An independent module is a
+  module which is not derived from or based on this library. If you modify
+  this library, you may extend this exception to your version of the library,
+  but you are not obligated to do so. If you do not wish to do so, delete this
+  exception statement from your version.
+
+  This program 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 Library General Public License
+  for more details.
+
+  You should have received a copy of the GNU Library General Public License
+  along with this library; if not, write to the Free Software Foundation,
+  Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1335, USA.
+}
+
+unit System.Terminal.InputOutputConnection;
+
+{$mode objfpc}{$H+}
+
+interface
+
+type
+
+  { ITerminalInputOutputConnection }
+
+  ITerminalInputOutputConnection = interface
+    function IsDataAvailable: Boolean;
+    function IsClosed: Boolean;
+
+    function Read(var Buffer; Bytes: SizeUInt): SizeInt;
+    procedure Write(const Buffer; Bytes: SizeUInt);
+    procedure Resize(NewWidth, NewHeight: Integer);
+    property DataAvailable: Boolean read IsDataAvailable;
+    property Closed: Boolean read IsClosed;
+  end;
+
+implementation
+
+end.
+