Query/Base/Utils/RegexUtils.cs

using System.Text;
using System.Text.RegularExpressions;

namespace Base.Utils{
    public static class RegexUtils{
        public static readonly RegexOptions Text = RegexOptions.CultureInvariant | RegexOptions.IgnoreCase | RegexOptions.ExplicitCapture | RegexOptions.Compiled;

        public static string Balance(string escapedStart, string escapedEnd){ // \(((?>[^()]+|\((?<n>)|\)(?<-n>))+(?(n)(?!)))\)
            return new StringBuilder()
                .Append(escapedStart)
                .Append(@"((?>[^")
                .Append(escapedStart)
                .Append(escapedEnd)
                .Append(@"]+|")
                .Append(escapedStart)
                .Append(@"(?<n>)|")
                .Append(escapedEnd)
                .Append(@"(?<-n>))+(?(n)(?!)))")
                .Append(escapedEnd)
                .ToString();
        }
    }
}