File : adagio-upload-ratings.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-upload-ratings.adb,v 1.3 2004/01/21 21:05:50 Jano Exp $
with Adagio.Os;
with Adagio.Trace;
with Expressions_evaluator;
with Strings.Utils; use Strings.Utils;
package body Adagio.Upload.Ratings is
package Eval is new Expressions_evaluator (Float);
------------------------------------------------------------------------
-- Check_syntax --
------------------------------------------------------------------------
-- Ensure validity of a expression to be evaluated
function Check_syntax (Expression : in String) return Boolean is
Cooked_expr : Ustring := U ("f = " & Expression);
E : Eval.Expressions;
Result : Float;
begin
-- Do replacements:
Cooked_expr :=
U (Replace (S (Cooked_expr), "uploads", "(0)"));
Cooked_expr :=
U (Replace (S (Cooked_expr), "bytes_sent", "(0)"));
Cooked_expr :=
U (Replace (S (Cooked_expr), "file_size", "(0)"));
Cooked_expr :=
U (Replace (S (Cooked_expr), "waited", "(1.0)"));
begin
E := Eval.Create (S (Cooked_expr));
Result := Eval.Evaluate (E, Eval.f);
Eval.Destroy (E);
return true;
exception
when Ex : others =>
Eval.Destroy (E);
Trace.Log ("Upload.Ratings.Check_syntax: " & Trace.Report (Ex));
Os.Message_box ("Syntax error", "Queue expression not valid: " &
Expression);
return false;
end;
end Check_syntax;
end Adagio.Upload.Ratings;