------------------------------------------------------------------------------
--                              Ada Web Server                              --
--                                                                          --
--                     Copyright (C) 2002-2013, AdaCore                     --
--                                                                          --
--  This library is free software;  you can redistribute it and/or modify   --
--  it under terms of the  GNU General Public License  as published by the  --
--  Free Software  Foundation;  either version 3,  or (at your  option) any --
--  later version. This library is distributed in the hope that it will be  --
--  useful, but WITHOUT ANY WARRANTY;  without even the implied warranty of --
--  MERCHANTABILITY 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.   --
--                                                                          --
--  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/>.                                         --
--                                                                          --
--  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.                                     --
------------------------------------------------------------------------------

pragma Ada_2012;

with AWS.Resources.Streams.Memory;

package AWS.Resources.Embedded is

   use Ada;

   Resource_Error : exception renames Resources.Resource_Error;

   subtype Buffer_Access is Streams.Memory.Buffer_Access;

   procedure Open
     (File : out File_Type;
      Name : String;
      Form : String    := "";
      GZip : in out Boolean);
   --  Open resource from registered data

   procedure Create
     (File   : out File_Type;
      Buffer : Buffer_Access);
   --  Create the resource directly from memory data

   function Exist (Name : String) return File_Instance;
   --  Return GZip if only file Name & ".gz" exists.
   --  Return Plain if only file Name exists.
   --  Return Both if both file Name and Name & ".gz" exists.
   --  Return None if files neither Name nor Name & ".gz" exist.

   function Is_Regular_File (Name : String) return Boolean with Inline;
   --  Returns True if file named Name has been registered (i.e. it is an
   --  in-memory file).

   function File_Size (Name : String) return Utils.File_Size_Type;

   function File_Timestamp (Name : String) return Ada.Calendar.Time;

   procedure Register
     (Name      : String;
      Content   : Buffer_Access;
      File_Time : Calendar.Time);
   --  Register a new file named Name into the embedded resources. The file
   --  content is pointed to by Content, the File_Time must be the last
   --  modification time stamp for the file. If Name ends with ".gz" the
   --  embedded resource registered as compressed. If a file is already
   --  registered for this name, Content replace the previous one.

   function Get_Buffer
     (Name : String; GZip : in out Boolean) return Buffer_Access;
   --  Get registered embedded resource buffer access by Name. Returns null if
   --  not found. GZip "in" value defines what resource version is preferred,
   --  compressed or plain. GZip "out" value defines what resource version was
   --  found, compressed or plain. In the spetial case when Name has .gz"
   --  suffix already, GZip "in" value is ignored, routine looks only for Name
   --  without duplicated additional suffix, and GZip "out" value became False
   --  if resource was found.

end AWS.Resources.Embedded;
