Wildcard To Regex Pattern - CSharp System.Text.RegularExpressions

CSharp examples for System.Text.RegularExpressions:Regex

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Description

Wildcard To Regex Pattern

Demo Code


using System.Text.RegularExpressions;
using System.Linq;
using System.IO;/*from w  w w  .ja  v a2 s .  co  m*/
using System.Collections.Generic;
using System;

public class Main{
        public static string WildcardToRegexPattern(string wildcard, bool matchWholeWord = true)
      {
         if (String.IsNullOrEmpty(wildcard))
         {
            wildcard = "*";
         }

         // Replace ; with |
         string[] strings = wildcard.Split(';');
         for (int i = 0; i < strings.Length; ++i)
         {
            // Remove extra spaces and escape any special characters and convert wildcards into regex tokens
            strings[i] = Regex.Escape(strings[i].Trim()).Replace("\\*", ".*").Replace("\\?", ".");
         }
         wildcard = string.Join("|", strings);

         // If the match whole word flag is set then add the required characters to the ends of the string
         if (matchWholeWord) wildcard = "^" + wildcard + "$";

         return wildcard;
      }
}

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