String extensions

StringExtensions.cs

using System;
using System.Collections.Generic;
using System.Linq;

namespace Cabana.UmbracoExamineApi
{
    public static class StringExtensions
    {
        /// <summary>
        /// VanDamme split
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        public static List<string> VanDamme(this string split, bool kick = true) => split.SplitCsv(!kick);

        /// <summary>
        /// Csv string split helper
        /// </summary>
        /// <param name="s"></param>
        /// <returns></returns>
        public static List<string> SplitCsv(this string s, bool allowEmpty = false)
            => s.Split(new[] { ',' }, allowEmpty ? StringSplitOptions.None : StringSplitOptions.RemoveEmptyEntries)?
            .Select(x => x.Trim())?
            .ToList();

        /// <summary>
        /// InvariantCultureIgnoreCase equals
        /// </summary>
        /// <param name="s"></param>
        /// <param name="input"></param>
        /// <returns></returns>
        public static bool Equalsish(this string s, string input) =>
            s.Equals(input, StringComparison.InvariantCultureIgnoreCase);

        /// <summary>
        /// StringComparisonable Many Replace
        /// </summary>
        /// <param name="source">Source string</param>
        /// <param name="oldValues">Find strings</param>
        /// <param name="newValue">Replacement string</param>
        /// <param name="stringComparison">Comparison type</param>
        /// <returns></returns>
        public static string Replace(this string source, string[] oldValues, string newValue, StringComparison stringComparison = StringComparison.InvariantCultureIgnoreCase) 
        {
            foreach (var oldValue in oldValues)
                source = source.Replace(oldValue, newValue, stringComparison);
            return source;
        }

        /// <summary>
        /// StringComparisonable Replace
        /// </summary>
        /// <param name="source">Source string</param>
        /// <param name="oldValue">Find string</param>
        /// <param name="newValue">Replacement string</param>
        /// <param name="stringComparison">Comparison type</param>
        /// <returns></returns>
        public static string Replace(this string source, string oldValue, string newValue, StringComparison stringComparison)
        {
            newValue = newValue ?? string.Empty;
            if (string.IsNullOrEmpty(source) || string.IsNullOrEmpty(oldValue) || oldValue.Equals(newValue, stringComparison))
                return source;
            int foundAt;
            while ((foundAt = source.IndexOf(oldValue, 0, stringComparison)) != -1)
                source = source.Remove(foundAt, oldValue.Length).Insert(foundAt, newValue);
            return source;
        }

    }
}