source: trunk/sources/HeuristicLab.ExtLibs/HeuristicLab.EPPlus/4.0.3/EPPlus-4.0.3/FormulaParsing/ExcelUtilities/WildCardValueMatcher.cs @ 12074

/*******************************************************************************
 * You may amend and distribute as you like, but don't remove this header!
 *
 * EPPlus provides server-side generation of Excel 2007/2010 spreadsheets.
 * See http://www.codeplex.com/EPPlus for details.
 *
 * Copyright (C) 2011  Jan Källman
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, 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.  
 * See the GNU Lesser General Public License for more details.
 *
 * The GNU Lesser General Public License can be viewed at http://www.opensource.org/licenses/lgpl-license.php
 * If you unfamiliar with this license or have questions about it, here is an http://www.gnu.org/licenses/gpl-faq.html
 *
 * All code and executables are provided "as is" with no warranty either express or implied. 
 * The author accepts no liability for any damage or loss of business that this product may cause.
 *
 * Code change notes:
 * 
 * Author             Change            Date
 * ******************************************************************************
 * Mats Alm                       Added                   2013-03-01 (Prior file history on https://github.com/swmal/ExcelFormulaParser)
 *******************************************************************************/
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;

namespace OfficeOpenXml.FormulaParsing.ExcelUtilities
{
    public class WildCardValueMatcher : ValueMatcher
    {
        protected override int CompareStringToString(string s1, string s2)
        {
            if (s1.Contains("*") || s1.Contains("?"))
            {
                var regexPattern = Regex.Escape(s1);
                regexPattern = string.Format("^{0}$", regexPattern);
                regexPattern = regexPattern.Replace(@"\*", ".*");
                regexPattern = regexPattern.Replace(@"\?", ".");
                if (Regex.IsMatch(s2, regexPattern))
                {
                    return 0;
                }
            }
            return base.CompareStringToString(s1, s2);
        }
    }
}