File : src/aws-services-dispatchers-uri.ads
------------------------------------------------------------------------------
-- Ada Web Server --
-- --
-- Copyright (C) 2000-2003 --
-- 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. --
-- --
-- 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. See the GNU --
-- General Public License for more details. --
-- --
-- You should have received a copy of the GNU General Public License --
-- along with this library; if not, write to the Free Software Foundation, --
-- 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. --
------------------------------------------------------------------------------
-- $RCSfile: aws-services-dispatchers-uri.ads,v $
-- $Revision: 1.9 $ $Date: 2003/03/02 14:49:44 $ $Author: obry $
-- Dispatch a specific request to a callback depending on the URI.
with Ada.Strings.Unbounded;
with GNAT.Dynamic_Tables;
with AWS.Dispatchers;
with AWS.Response;
with AWS.Status;
package AWS.Services.Dispatchers.URI is
type Handler is new AWS.Dispatchers.Handler with private;
function Dispatch
(Dispatcher : in Handler;
Request : in Status.Data)
return Response.Data;
-- Dispatch will return the value returned by the first callback matching
-- the request. Note that if a callback returns the Response.Empty
-- message, Dispatch will just continue to the next matching callback. In
-- any cases, if no handler matches it will call the default callback. If
-- no default callback is registered an error HTML message will be
-- returned.
procedure Register
(Dispatcher : in out Handler;
URI : in String;
Action : in AWS.Dispatchers.Handler'Class);
-- Register URI to use the specified dispatcher. URI is the full string
-- that must match the ressource requested (with the leading /).
procedure Register
(Dispatcher : in out Handler;
URI : in String;
Action : in Response.Callback);
-- Idem as above but take a callback procedure as parameter.
procedure Register_Regexp
(Dispatcher : in out Handler;
URI : in String;
Action : in AWS.Dispatchers.Handler'Class);
-- Register URI to use the specified dispatcher. URI is a regular
-- expression that must math the ressource requested (with the leading /).
procedure Register_Regexp
(Dispatcher : in out Handler;
URI : in String;
Action : in Response.Callback);
-- Idem as above but take a callback procedure as parameter.
procedure Unregister
(Dispatcher : in out Handler;
URI : in String);
-- Removes URI from the list. URI is either a name or a regexp and must
-- have exactaly the value used with Register.
procedure Register_Default_Callback
(Dispatcher : in out Handler;
Action : in AWS.Dispatchers.Handler'Class);
-- Register the default callback. This will be used if no URI match
-- the request.
procedure Initialize (Dispatcher : in out Handler);
procedure Finalize (Dispatcher : in out Handler);
private
use Ada.Strings.Unbounded;
type Std_URI is tagged record
Action : AWS.Dispatchers.Handler_Class_Access;
URI : Unbounded_String;
end record;
function Match (URI : in Std_URI; Value : in String) return Boolean;
type URI_Class_Access is access all Std_URI'Class;
package URI_Table is
new GNAT.Dynamic_Tables (URI_Class_Access, Natural, 1, 20, 10);
type Handler is new AWS.Dispatchers.Handler with record
Action : AWS.Dispatchers.Handler_Class_Access;
Table : URI_Table.Instance;
end record;
end AWS.Services.Dispatchers.URI;