1------------------------------------------------------------------------------
2--                                                                          --
3--                        GNAT RUN-TIME COMPONENTS                          --
4--                                                                          --
5--      A D A . W I D E _ W I D E _ T E X T _ I O . C _ S T R E A M S       --
6--                                                                          --
7--                                 B o d y                                  --
8--                                                                          --
9--          Copyright (C) 1992-2018, Free Software Foundation, Inc.         --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32with Interfaces.C_Streams; use Interfaces.C_Streams;
33with System.File_IO;
34with System.File_Control_Block;
35with Ada.Unchecked_Conversion;
36
37package body Ada.Wide_Wide_Text_IO.C_Streams is
38
39   package FIO renames System.File_IO;
40   package FCB renames System.File_Control_Block;
41
42   subtype AP is FCB.AFCB_Ptr;
43
44   function To_FCB is new Ada.Unchecked_Conversion (File_Mode, FCB.File_Mode);
45
46   --------------
47   -- C_Stream --
48   --------------
49
50   function C_Stream (F : File_Type) return FILEs is
51   begin
52      FIO.Check_File_Open (AP (F));
53      return F.Stream;
54   end C_Stream;
55
56   ----------
57   -- Open --
58   ----------
59
60   procedure Open
61     (File     : in out File_Type;
62      Mode     : File_Mode;
63      C_Stream : FILEs;
64      Form     : String := "";
65      Name     : String := "")
66   is
67      Dummy_File_Control_Block : Wide_Wide_Text_AFCB;
68      pragma Warnings (Off, Dummy_File_Control_Block);
69      --  Yes, we know this is never assigned a value, only the tag
70      --  is used for dispatching purposes, so that's expected.
71
72   begin
73      FIO.Open (File_Ptr  => AP (File),
74                Dummy_FCB => Dummy_File_Control_Block,
75                Mode      => To_FCB (Mode),
76                Name      => Name,
77                Form      => Form,
78                Amethod   => 'W',
79                Creat     => False,
80                Text      => True,
81                C_Stream  => C_Stream);
82
83   end Open;
84
85end Ada.Wide_Wide_Text_IO.C_Streams;
86