-- --
-- B o d y --
-- --
--- --
--- Copyright (C) 1996-2001 Free Software Foundation, Inc. --
+-- Copyright (C) 1996-2009, 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- --
+-- 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. 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. --
+-- 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. --
-- --
--- 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. --
+-- 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 --
+-- <http://www.gnu.org/licenses/>. --
-- --
-- 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). --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- Note: the reason that we provide for specialization here is that on
-- some systems, notably VMS, we may need to worry about buffering.
-with Unchecked_Conversion;
+with Ada.Unchecked_Conversion;
package body Interfaces.C_Streams is
+ use type System.CRTL.size_t;
+
+ ----------------------------
+ -- Interfaced C functions --
+ ----------------------------
+
+ function C_fread
+ (buffer : voids;
+ size : size_t;
+ count : size_t;
+ stream : FILEs) return size_t;
+ pragma Import (C, C_fread, "fread");
+
+ function C_fwrite
+ (buffer : voids;
+ size : size_t;
+ count : size_t;
+ stream : FILEs) return size_t;
+ pragma Import (C, C_fwrite, "fwrite");
+
+ function C_setvbuf
+ (stream : FILEs;
+ buffer : chars;
+ mode : int;
+ size : size_t) return int;
+ pragma Import (C, C_setvbuf, "setvbuf");
+
------------
-- fread --
------------
(buffer : voids;
size : size_t;
count : size_t;
- stream : FILEs)
- return size_t
+ stream : FILEs) return size_t
is
- function C_fread
- (buffer : voids;
- size : size_t;
- count : size_t;
- stream : FILEs)
- return size_t;
- pragma Import (C, C_fread, "fread");
-
begin
return C_fread (buffer, size, count, stream);
end fread;
-- fread --
------------
+ -- The following declarations should really be nested within fread, but
+ -- limitations in front end inlining make this undesirable right now ???
+
+ type Byte_Buffer is array (0 .. size_t'Last / 2 - 1) of Unsigned_8;
+ -- This should really be 0 .. size_t'last, but there is a problem
+ -- in gigi in handling such types (introduced in GCC 3 Sep 2001)
+ -- since the size in bytes of this array overflows ???
+
+ type Acc_Bytes is access all Byte_Buffer;
+
+ function To_Acc_Bytes is new Ada.Unchecked_Conversion (voids, Acc_Bytes);
+
function fread
(buffer : voids;
index : size_t;
size : size_t;
count : size_t;
- stream : FILEs)
- return size_t
+ stream : FILEs) return size_t
is
- function C_fread
- (buffer : voids;
- size : size_t;
- count : size_t;
- stream : FILEs)
- return size_t;
- pragma Import (C, C_fread, "fread");
-
- type Byte_Buffer is array (0 .. size_t'Last / 2 - 1) of Unsigned_8;
- -- This should really be 0 .. size_t'last, but there is a problem
- -- in gigi in handling such types (introduced in GCC 3 Sep 2001)
- -- since the size in bytes of this array overflows ???
-
- type Acc_Bytes is access all Byte_Buffer;
-
- function To_Acc_Bytes is new Unchecked_Conversion (voids, Acc_Bytes);
-
begin
return C_fread
(To_Acc_Bytes (buffer) (index * size)'Address, size, count, stream);
(buffer : voids;
size : size_t;
count : size_t;
- stream : FILEs)
- return size_t
+ stream : FILEs) return size_t
is
- function C_fwrite
- (buffer : voids;
- size : size_t;
- count : size_t;
- stream : FILEs)
- return size_t;
- pragma Import (C, C_fwrite, "fwrite");
-
begin
return C_fwrite (buffer, size, count, stream);
end fwrite;
(stream : FILEs;
buffer : chars;
mode : int;
- size : size_t)
- return int
+ size : size_t) return int
is
- function C_setvbuf
- (stream : FILEs;
- buffer : chars;
- mode : int;
- size : size_t)
- return int;
- pragma Import (C, C_setvbuf, "setvbuf");
-
begin
return C_setvbuf (stream, buffer, mode, size);
end setvbuf;
OSDN Git Service
