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------------------------------------------------------------------------------
-- --
-- GNAT RUN-TIME COMPONENTS --
-- --
-- A D A . D I R E C T _ I O . C _ S T R E A M S --
-- --
-- B o d y --
-- --
-- $Revision: 1.4 $ --
-- --
-- Copyright (C) 1992-1998 Free Software Foundation, Inc. --
-- --
-- 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 2, 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. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
-- MA 02111-1307, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
-- --
------------------------------------------------------------------------------
with Interfaces.C_Streams; use Interfaces.C_Streams;
with System.File_IO;
with System.File_Control_Block;
with System.Direct_IO;
with Unchecked_Conversion;
package body Ada.Direct_IO.C_Streams is
package FIO renames System.File_IO;
package FCB renames System.File_Control_Block;
package DIO renames System.Direct_IO;
subtype AP is FCB.AFCB_Ptr;
function To_FCB is new Unchecked_Conversion (File_Mode, FCB.File_Mode);
--------------
-- C_Stream --
--------------
function C_Stream (F : File_Type) return FILEs is
begin
FIO.Check_File_Open (AP (F));
return F.Stream;
end C_Stream;
----------
-- Open --
----------
procedure Open
(File : in out File_Type;
Mode : in File_Mode;
C_Stream : in FILEs;
Form : in String := "")
is
File_Control_Block : DIO.Direct_AFCB;
begin
FIO.Open (File_Ptr => AP (File),
Dummy_FCB => File_Control_Block,
Mode => To_FCB (Mode),
Name => "",
Form => Form,
Amethod => 'D',
Creat => False,
Text => False,
C_Stream => C_Stream);
File.Bytes := Bytes;
end Open;
end Ada.Direct_IO.C_Streams;
|
