Question

Hi I have following string pattern:

*A

*BA*

AB

*GN*BN

I need to find such pattern in my input string.
If it matches, I need to replace the values accordingly.

How can I do it with regex?
Here pattern that I shown above is coming from XML file. So it is dynamic.
* here means wild card character. so,

*A means string ending with A.

*BA* means string containg BA in between.

AB means exact AB string.

Answer 1

It looks like the patterns you’re getting are pretty close to regexes already, just missing a . in front of the * to indicate that what can be repeated is ‘anything’ (Repetition in regexes).

static bool PerformMatch(string rawPattern, string value)
{
    var adjustedPattern = rawPattern.Replace("*", ".*");
    var regex = new Regex(adjustedPattern);
    var match = regex.Match(value);
    return match.Success && match.Length == value.Length;
}

static void Main()
{
    Console.WriteLine(PerformMatch("*BA*", "Oh?"));  //false
    Console.WriteLine(PerformMatch("*BA*", "BAH!")); //true
    Console.ReadLine();
}