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------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- A D A . D I R E C T _ I O . C _ S T R E A M S --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1992-2002 Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 2, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING. If not, write --
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-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
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-- Boston, MA 02110-1301, USA. --
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-- --
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-- As a special exception, if other files instantiate generics from this --
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-- unit, or you link this unit with other files to produce an executable, --
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-- this unit does not by itself cause the resulting executable to be --
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-- covered by the GNU General Public License. This exception does not --
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-- however invalidate any other reasons why the executable file might be --
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-- covered by the GNU Public License. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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with Interfaces.C_Streams; use Interfaces.C_Streams;
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with System.File_IO;
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with System.File_Control_Block;
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with System.Direct_IO;
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with Unchecked_Conversion;
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package body Ada.Direct_IO.C_Streams is
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package FIO renames System.File_IO;
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package FCB renames System.File_Control_Block;
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package DIO renames System.Direct_IO;
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subtype AP is FCB.AFCB_Ptr;
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function To_FCB is new Unchecked_Conversion (File_Mode, FCB.File_Mode);
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--------------
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-- C_Stream --
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--------------
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function C_Stream (F : File_Type) return FILEs is
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begin
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FIO.Check_File_Open (AP (F));
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return F.Stream;
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end C_Stream;
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----------
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-- Open --
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----------
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procedure Open
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(File : in out File_Type;
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Mode : File_Mode;
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C_Stream : FILEs;
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Form : String := "";
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Name : String := "")
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is
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Dummy_File_Control_Block : DIO.Direct_AFCB;
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pragma Warnings (Off, Dummy_File_Control_Block);
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-- Yes, we know this is never assigned a value, only the tag
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-- is used for dispatching purposes, so that's expected.
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begin
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FIO.Open (File_Ptr => AP (File),
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Dummy_FCB => Dummy_File_Control_Block,
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Mode => To_FCB (Mode),
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Name => Name,
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Form => Form,
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Amethod => 'D',
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Creat => False,
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Text => False,
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C_Stream => C_Stream);
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File.Bytes := Bytes;
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end Open;
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end Ada.Direct_IO.C_Streams;
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