1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- A D A . D I R E C T _ I O . C _ S T R E A M S --
10 -- Copyright (C) 1992-1998 Free Software Foundation, Inc. --
12 -- GNAT is free software; you can redistribute it and/or modify it under --
13 -- terms of the GNU General Public License as published by the Free Soft- --
14 -- ware Foundation; either version 2, or (at your option) any later ver- --
15 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
16 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
17 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
18 -- for more details. You should have received a copy of the GNU General --
19 -- Public License distributed with GNAT; see file COPYING. If not, write --
20 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
21 -- MA 02111-1307, USA. --
23 -- As a special exception, if other files instantiate generics from this --
24 -- unit, or you link this unit with other files to produce an executable, --
25 -- this unit does not by itself cause the resulting executable to be --
26 -- covered by the GNU General Public License. This exception does not --
27 -- however invalidate any other reasons why the executable file might be --
28 -- covered by the GNU Public License. --
30 -- GNAT was originally developed by the GNAT team at New York University. --
31 -- Extensive contributions were provided by Ada Core Technologies Inc. --
33 ------------------------------------------------------------------------------
35 with Interfaces
.C_Streams
; use Interfaces
.C_Streams
;
37 with System
.File_Control_Block
;
38 with System
.Direct_IO
;
39 with Unchecked_Conversion
;
41 package body Ada
.Direct_IO
.C_Streams
is
43 package FIO
renames System
.File_IO
;
44 package FCB
renames System
.File_Control_Block
;
45 package DIO
renames System
.Direct_IO
;
47 subtype AP
is FCB
.AFCB_Ptr
;
49 function To_FCB
is new Unchecked_Conversion
(File_Mode
, FCB
.File_Mode
);
55 function C_Stream
(F
: File_Type
) return FILEs
is
57 FIO
.Check_File_Open
(AP
(F
));
66 (File
: in out File_Type
;
69 Form
: in String := "")
71 File_Control_Block
: DIO
.Direct_AFCB
;
74 FIO
.Open
(File_Ptr
=> AP
(File
),
75 Dummy_FCB
=> File_Control_Block
,
76 Mode
=> To_FCB
(Mode
),
82 C_Stream
=> C_Stream
);
87 end Ada
.Direct_IO
.C_Streams
;