------------------------------------------------------------------------------ -- Ada Web Server -- -- -- -- Copyright (C) 2003-2019, 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 Ada.Streams; with AWS.Config; with AWS.MIME; with AWS.Resources.Streams.Memory; with AWS.Services.Split_Pages.Uniform; with AWS.Services.Transient_Pages; with AWS.Translator; with Templates_Parser.Query; package body AWS.Services.Split_Pages is ----------- -- Parse -- ----------- function Parse (Template : String; Translations : Templates.Translate_Set; Table : Templates.Translate_Set; Split_Rule : Splitter'Class; Cached : Boolean := True) return Response.Data is use Templates, Templates.Query; procedure Process_Association (A : Templates.Association; Quit : in out Boolean); -- Add A's range into the set if A is a composite object Ranges : constant Ranges_Table := Get_Page_Ranges (Split_Rule, Table); URIs : URI_Table (1 .. Ranges'Length); Split_Set : Templates.Translate_Set; Result : Unbounded_String; Range_Line : Positive; ------------------------- -- Process_Association -- ------------------------- procedure Process_Association (A : Templates.Association; Quit : in out Boolean) is pragma Unreferenced (Quit); begin case Kind (A) is when Templates.Std => -- Nothing to be done, copy this association as-is Insert (Split_Set, A); when Templates.Composite => -- Copy Vector's items in the indicated range declare Vector : Tag renames Composite (A); V : Templates.Tag; begin for K in Ranges (Range_Line).First .. Ranges (Range_Line).Last loop if K <= Templates.Size (Vector) then V := V & Templates.Item (Vector, K); else exit; end if; end loop; Insert (Split_Set, Templates.Assoc (Variable (A), V)); end; end case; end Process_Association; ------------------------------ -- Process_All_Associations -- ------------------------------ procedure Process_All_Associations is new Templates.For_Every_Association (Process_Association); begin -- Create the set of temporary URIs needed for the pages for K in URIs'Range loop URIs (K) := To_Unbounded_String (Services.Transient_Pages.Get_URI); end loop; -- Create each page for I in Ranges'Range loop -- Create the Split_Table containing part of the items Split_Set := Translations; Range_Line := I; Process_All_Associations (Table); -- Add common tags before calling Get_Translations, -- so that they can be replaced if desired. Insert (Split_Set, Assoc ("NUMBER_PAGES", URIs'Length)); Insert (Split_Set, Assoc ("PAGE_NUMBER", I)); Insert (Split_Set, Assoc ("OFFSET", Ranges (I).First - 1)); Insert (Split_Set, Get_Translations (Split_Rule, I, URIs, Ranges)); -- Generate the page, add it to the transient pages handler declare Stream : AWS.Resources.Streams.Stream_Access; begin Stream := new AWS.Resources.Streams.Memory.Stream_Type; declare use Ada.Streams; Page : constant Unbounded_String := Parse (Template, Split_Set, Cached); begin AWS.Resources.Streams.Memory.Append (AWS.Resources.Streams.Memory.Stream_Type (Stream.all), Stream_Element_Array' (Translator.To_Stream_Element_Array (To_String (Page)))); if Result = Null_Unbounded_String then Result := Page; end if; end; Services.Transient_Pages.Register (To_String (URIs (I)), Stream, Config.Transient_Lifetime); end; end loop; return Response.Build (MIME.Text_HTML, Result); end Parse; function Parse (Template : String; Translations : Templates.Translate_Table; Table : Templates.Translate_Table; Split_Rule : Splitter'Class; Cached : Boolean := True) return Response.Data is begin return Parse (Template, Templates.To_Set (Translations), Templates.To_Set (Table), Split_Rule, Cached); end Parse; function Parse (Template : String; Translations : Templates.Translate_Table; Table : Templates.Translate_Table; Max_Per_Page : Positive := 25; Max_In_Index : Positive := 20; Cached : Boolean := True) return Response.Data is pragma Unreferenced (Max_In_Index); S : Uniform.Splitter (Max_Per_Page); begin return Parse (Template, Translations, Table, S, Cached); end Parse; end AWS.Services.Split_Pages;