File : adagio-http-header-response.adb
------------------------------------------------------------------------------
-- ADAGIO - ADALID - AENEA. --
-- --
-- Copyright (C) 2003 --
-- A. Mosteo. --
-- --
-- Authors: A. Mosteo. (adagio@mosteo.com) --
-- --
-- If you have any questions in regard to this software, please address --
-- them to the above email. --
-- --
-- This program 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 program 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. --
-- --
-- You are not allowed to use any part of this code to develop a program --
-- whose output would be used to harass or prosecute other users of the --
-- networks Adagio connects with. All data collected with Adagio or a tool --
-- containing Adagio code about other network users must remain --
-- confidential and cannot be made public by any mean, nor be used to --
-- harass or legally prosecute these users. --
------------------------------------------------------------------------------
-- $Id: adagio-http-header-response.adb,v 1.3 2004/01/21 21:05:37 Jano Exp $
with Strings.Fields;
with Strings.Utils;
package body Adagio.Http.Header.Response is
------------------------------------------------------------------------
-- Create_response --
------------------------------------------------------------------------
-- Create the response for a file request, being it partial or not
procedure Create_response (
Result : in out Header.Set;
Request : in Header.Set;
RSize : in Natural) is
use Strings.Fields;
use Strings.Utils;
Partial : Boolean := Get (Request, "Range") /= "";
Size : String := Trim (Natural'Image (RSize));
Start : Natural;
Final : Natural;
begin
if Partial then
declare
Rang : String :=
Trim (Select_field (Get (Request, "Range"), 2, '='));
Len : Natural;
begin
Start := Natural'Value (Select_field (Rang, 1, '-'));
if Rang (Rang'Last) = '-' then
Final := RSize - 1;
else
Final :=
Natural'Value (Select_field (Rang, 2, '-'));
end if;
Len := Final - Start + 1;
Add (Result, "Content-Length",
Trim (Natural'Image (Len)));
end;
else
Add (Result, "Content-Length", Size);
end if;
if Partial then
Add (Result, "Content-Range", "bytes " &
Trim (Natural'Image (Start)) & "-" &
Trim (Natural'Image (Final)) & "/" & Size);
end if;
end Create_response;
end Adagio.Http.Header.Response;