------------------------------------------------------------------------------ -- 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. -- ------------------------------------------------------------------------------ with AWS.Response; with AWS.Status; private with Ada.Containers.Vectors; private with Ada.Strings.Unbounded; private with GNAT.Regexp; package AWS.Hotplug is Register_Error : exception; -- Raised if the Register command failed type Register_Mode is (Add, Replace); -- Add : Add a new filter at the end of the set if there is no such -- key, raises Register_Error otherwise (default value) -- Replace : Replace existing filter with the same key or add it if -- there is no such filter in the set. type Filter_Set is private; procedure Set_Mode (Filters : in out Filter_Set; Mode : Register_Mode); -- Set registering mode for this Filter_Set procedure Register (Filters : in out Filter_Set; Regexp : String; URL : String); -- Add a Filter in the Filter_Set, the URL will be called if the URI match -- the regexp. If Regexp already exist it just replace the current entry. procedure Unregister (Filters : in out Filter_Set; Regexp : String); -- Removes a Filter from the Filter_Set. The filter name is defined by the -- regular expression. Does nothing if regexp is not found. procedure Apply (Filters : Filter_Set; Status : AWS.Status.Data; Found : out Boolean; Data : out Response.Data); -- Run through the filters and apply the first one for which the regular -- expression match the URI. Set Found to True if one filter has been -- called and in that case Data contain the answer, otherwise Found is set -- to False. procedure Move_Up (Filters : in out Filter_Set; N : Positive); -- Move filter number N up one position, it gives filter number N an -- higher priority. procedure Move_Down (Filters : in out Filter_Set; N : Positive); -- Move filter number N down one position, it gives filter number N a -- lower priority. private use Ada.Strings.Unbounded; type Filter_Data is record Regexp_Str : Unbounded_String; -- The regexp Regexp : GNAT.Regexp.Regexp; -- The compiled regexp URL : Unbounded_String; -- The redirection URL end record; function Equal_Data (Left, Right : Filter_Data) return Boolean; -- Returns True if Left.Regexp and Right.Regexp are equals package Filter_Table is new Ada.Containers.Vectors (Positive, Filter_Data, Equal_Data); type Filter_Set is record Mode : Register_Mode; Set : Filter_Table.Vector; end record; end AWS.Hotplug;