sharp-chat/SharpChat/SharpUtil.cs

namespace SharpChat {
    public static class SharpUtil {
        public static string Sanitise(string? body) {
            if(string.IsNullOrEmpty(body))
                return string.Empty;

            return body.Replace("<", "&lt;").Replace(">", "&gt;").Replace("\n", " <br/> ").Replace("\t", "    ");
        }
    }
}