------------------------------------------------------------------------------ -- -- -- GNAT LIBRARY COMPONENTS -- -- -- -- G N A T . T T Y -- -- -- -- S p e c -- -- -- -- Copyright (C) 2002-2018, AdaCore -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 3, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. -- -- -- -- As a special exception under Section 7 of GPL version 3, you are granted -- -- additional permissions described in the GCC Runtime Library Exception, -- -- version 3.1, as published by the Free Software Foundation. -- -- -- -- You should have received a copy of the GNU General Public License and -- -- a copy of the GCC Runtime Library Exception along with this program; -- -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- -- . -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package provides control over pseudo terminals (ttys) -- This package is only supported on unix systems. See function TTY_Supported -- to test dynamically whether other functions of this package can be called. with System; with GNAT.OS_Lib; package GNAT.TTY is type TTY_Handle is private; -- Handle for a tty descriptor function TTY_Supported return Boolean; -- If True, the other functions of this package can be called. Otherwise, -- all functions in this package will raise Program_Error if called. procedure Allocate_TTY (Handle : out TTY_Handle); -- Allocate a new tty procedure Reset_TTY (Handle : TTY_Handle); -- Reset settings of a given tty procedure Close_TTY (Handle : in out TTY_Handle); -- Close a given tty function TTY_Name (Handle : TTY_Handle) return String; -- Return the external name of a tty. The name depends on the tty handling -- on the given target. It will typically look like: "/dev/ptya1" function TTY_Descriptor (Handle : TTY_Handle) return GNAT.OS_Lib.File_Descriptor; -- Return the low level descriptor associated with Handle private type TTY_Handle is record Handle : System.Address := System.Null_Address; end record; end GNAT.TTY;