The test of strange slug from a title with Japanese on Orchard CMS 1.0

orchard_slug_ja_test.cs

using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Text;
using System.Globalization;

namespace code_test_dotnet
{

	/// <summary>
	/// its dummy for the test
	/// </summary>
	public interface IEventHandler { }

	public interface ISlugEventHandler : IEventHandler
	{
		void FillingSlugFromTitle(FillSlugContext context);
		void FilledSlugFromTitle(FillSlugContext context);
	}

	public class FillSlugContext
	{
		public FillSlugContext(string slug)
		{
			Slug = slug;
		}

		public string Slug { get; set; }
		public bool Adjusted { get; set; }
	}

	/// <summary>
	/// its dummy for the test
	/// </summary>
	public class Model
	{
		public string Title { get; set; }
		public string Slug { get; set; }
		public override string ToString()
		{ return "Title: " + Title + "\n" + "Slug : " + Slug + "\n"; }
	}

	class Program
	{
		IEnumerable<ISlugEventHandler> _slugEventHandlers = new List<ISlugEventHandler>();

		string RemoveDiacritics(string slug)
		{
			string stFormD = slug.Normalize(NormalizationForm.FormD);
			StringBuilder sb = new StringBuilder();

			for (int ich = 0; ich < stFormD.Length; ich++)
			{
				UnicodeCategory uc = CharUnicodeInfo.GetUnicodeCategory(stFormD[ich]);
				if (uc != UnicodeCategory.NonSpacingMark)
				{
					sb.Append(stFormD[ich]);
				}
			}

			return (sb.ToString().Normalize(NormalizationForm.FormC));
		}

		/// <summary>
		/// its "FillSlugFromTitle" fake for the test
		/// </summary>
		void test(ref Model model)
		{
			FillSlugContext slugContext = new FillSlugContext(model.Title);

			foreach (ISlugEventHandler slugEventHandler in _slugEventHandlers)
			{
				slugEventHandler.FillingSlugFromTitle(slugContext);
			}

			if (!slugContext.Adjusted)
			{
				var disallowed = new Regex(@"[/:?#\[\]@!$&'()*+,;=\s\""\<\>]+");

				slugContext.Slug = disallowed.Replace(slugContext.Slug, "-").Trim('-');

				if (slugContext.Slug.Length > 1000)
					slugContext.Slug = slugContext.Slug.Substring(0, 1000);

				// dots are not allowed at the begin and the end of routes
				slugContext.Slug = RemoveDiacritics(slugContext.Slug.Trim('.').ToLower());
			}

			foreach (ISlugEventHandler slugEventHandler in _slugEventHandlers)
			{
				slugEventHandler.FilledSlugFromTitle(slugContext);
			}

	    model.Slug = slugContext.Slug;
		}

		static void Main()
		{
			var p = new Program();
			var m = new Model() { Title = "じゅんぱな"};
			p.test(ref m);
			Console.WriteLine(m);
		}
	}
}