------------------------------------------------------------------------------ -- Ada Web Server -- -- -- -- Copyright (C) 2000-2014, 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 -- -- . -- -- -- -- 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. -- ------------------------------------------------------------------------------ -- Dispatch a specific request to a callback depending on the URI with AWS.Dispatchers; with AWS.Response; with AWS.Status; with AWS.Utils; private with Ada.Containers.Vectors; private with Ada.Strings.Unbounded; package AWS.Services.Dispatchers.URI is type Handler is new AWS.Dispatchers.Handler with private; procedure Register (Dispatcher : in out Handler; URI : String; Action : AWS.Dispatchers.Handler'Class; Prefix : Boolean := False); -- Register URI to use the specified dispatcher. URI is the full string -- that must match the resource requested (with the leading /). If Prefix -- is True, only the URI prefix is checked. procedure Register (Dispatcher : in out Handler; URI : String; Action : Response.Callback; Prefix : Boolean := False); -- Idem as above but take a callback procedure as parameter procedure Register_Regexp (Dispatcher : in out Handler; URI : String; Action : AWS.Dispatchers.Handler'Class); -- Register URI to use the specified dispatcher. URI is a regular -- expression that must match the resource requested (with the leading /). procedure Register_Regexp (Dispatcher : in out Handler; URI : String; Action : Response.Callback); -- Idem as above but take a callback procedure as parameter procedure Unregister (Dispatcher : in out Handler; URI : String); -- Removes URI from the list. URI is either a name or a regexp and must -- have exactly the value used with Register. procedure Register_Default_Callback (Dispatcher : in out Handler; Action : AWS.Dispatchers.Handler'Class); -- Register the default callback. This will be used if no URI match -- the request. private use Ada.Strings.Unbounded; overriding procedure Finalize (Dispatcher : in out Handler); overriding function Dispatch (Dispatcher : Handler; Request : 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 case, -- if no handler matches it will call the default callback. If no default -- callback is registered an error (code 404) HTML message is returned. overriding function Clone (Dispatcher : Handler) return Handler; -- Returns a deep copy of the dispatcher type Std_URI is new Utils.Clonable with record Action : AWS.Dispatchers.Handler_Class_Access; URI : Unbounded_String; Prefix : Boolean; end record; overriding function Clone (URI : Std_URI) return Std_URI; function Match (URI : Std_URI; Value : String) return Boolean; type URI_Class_Access is access all Std_URI'Class; package URI_Table is new Ada.Containers.Vectors (Positive, URI_Class_Access, "="); type Handler is new AWS.Dispatchers.Handler with record Action : AWS.Dispatchers.Handler_Class_Access; Table : URI_Table.Vector; end record; end AWS.Services.Dispatchers.URI;