using System;
using System.CodeDom.Compiler;
using Microsoft.CSharp;
using System.Xml.Serialization;
using System.IO;
using System.Text;

namespace DoenaSoft.InlineCompiling
{
  public static class Program
  {
    static void Main()
    {
      ParamList pl;

      //to create a sample XML file:
      pl = new ParamList();
      pl.Params = new Param[1];
      pl.Params[0] = new Param();
      pl.Params[0].Name = "Kursiver Text";
      pl.Params[0].Regex
        = "\\\\[i\\\\](?'Text'.+?)\\\\[/i\\\\]";
      pl.Params[0].RegexOptions = "RegexOptions.Compiled"
        + "| RegexOptions.Singleline "
        + "| RegexOptions.IgnoreCase";
      pl.Params[0].Code = "\"\""
        + " + match.Groups[\"Text\"].Value + \"\"";
      using(FileStream fs = new FileStream("params.xml"
        , FileMode.Create, FileAccess.Write
        , FileShare.None))
      {
        XmlSerializer xmls
          = new XmlSerializer(typeof(ParamList));

        xmls.Serialize(fs, pl);
      }
      //end creating sample XML file

      using(FileStream fs = new FileStream("params.xml"
        , FileMode.Open, FileAccess.Read
        , FileShare.Read))
      {
        XmlSerializer xmls
          = new XmlSerializer(typeof(ParamList));

        pl = (ParamList)(xmls.Deserialize(fs));
      }

      String text = "[i]some text[/i]";

      foreach(Param param in pl.Params)
      {
        CSharpCodeProvider scp;
        CompilerParameters cp;
        CompilerResults cr;
        Object replacer;
        StringBuilder sb;

        sb =  new StringBuilder();
        sb.AppendLine("using System;");
        sb.AppendLine("using System.Text."
          + "RegularExpressions;");
        sb.AppendLine();
        sb.AppendLine("public class RegexReplacer");
        sb.AppendLine("{");
        sb.AppendLine("  private static readonly Regex "
          + "s_Regex = new Regex(\"" + param.Regex
          + "\", " + param.RegexOptions + ");");
        sb.AppendLine();
        sb.AppendLine("  private String Replace(Match "
          + "match)");
        sb.AppendLine("  {");
        sb.AppendLine("    return (" + param.Code
          + ");");
        sb.AppendLine("  }");
        sb.AppendLine();
        sb.AppendLine("  public String Replace(String "
          + "text)");
        sb.AppendLine("  {");
        sb.AppendLine("    return (s_Regex.Replace(text"
          + ", new MatchEvaluator(this.Replace)));");
        sb.AppendLine("  }");
        sb.AppendLine("}");

        scp = new CSharpCodeProvider();
        cp = new CompilerParameters();
        cp.ReferencedAssemblies.Add("System.dll");
        cr = scp.CompileAssemblyFromSource(cp
          , sb.ToString());
        replacer = cr.CompiledAssembly
          .CreateInstance("RegexReplacer");
        text = replacer.GetType().GetMethod("Replace")
          .Invoke(replacer, new Object[] { text })
          .ToString();
      }
    }
  }

  [Serializable()]
  public class ParamList
  {
    [XmlArrayItem("Param")]
    public Param[] Params;
  }

  [Serializable()]
  public class Param
  {
    public String Name;
    public String Regex;
    public String RegexOptions;
    public String Code;
  }
}