File : src/aws-resources-streams-disk.ads


------------------------------------------------------------------------------
--                              Ada Web Server                              --
--                                                                          --
--                            Copyright (C) 2003                            --
--                                ACT-Europe                                --
--                                                                          --
--  Authors: Dmitriy Anisimkov - Pascal Obry                                --
--                                                                          --
--  This library is free software; you can redistribute it and/or modify    --
--  it under the terms of the GNU General Public License as published by    --
--  the Free Software Foundation; either version 2 of the License, or (at   --
--  your option) any later version.                                         --
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--  This library is distributed in the hope that it will be useful, but     --
--  WITHOUT ANY WARRANTY; without even the implied warranty of              --
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--  General Public License for more details.                                --
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--  You should have received a copy of the GNU General Public License       --
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--  Inc., 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.                                     --
------------------------------------------------------------------------------

--  $Id: aws-resources-streams-disk.ads,v 1.1 2003/11/12 22:58:16 obry Exp $

with Ada.Streams.Stream_IO;

package AWS.Resources.Streams.Disk is

   type Stream_Type is new Streams.Stream_Type with private;

   procedure Open
     (File :    out Stream_Type;
      Name : in     String;
      Form : in     String    := "");

   function End_Of_File (Resource : in Stream_Type) return Boolean;

   procedure Read
     (Resource : in out Stream_Type;
      Buffer   :    out Stream_Element_Array;
      Last     :    out Stream_Element_Offset);

   function Size (Resource : in Stream_Type) return Stream_Element_Offset;

   procedure Reset (Resource : in out Stream_Type);

   procedure Close (Resource : in out Stream_Type);

private

   Buffer_Size : constant := 8_192;

   type Stream_Type is new Streams.Stream_Type with record
      File    : Stream_IO.File_Type;
      Stream  : Stream_IO.Stream_Access;
      --  Below are data for buffered access to the file
      Buffer  : Stream_Element_Array (1 .. Buffer_Size);
      Current : Stream_Element_Offset := 1;
      Last    : Stream_Element_Offset := 0;
   end record;

end AWS.Resources.Streams.Disk;