mixtape/zero.Core/Renderer/TokenReplacement.cs

using System.Collections.Generic;
using System.Text.RegularExpressions;
using zero.Core.Extensions;

namespace zero.Core.Renderer
{
  public class TokenReplacement
  {
    static Regex TokenRegex;


    static TokenReplacement()
    {
      TokenRegex = new Regex("{([\\w-_.]+)}", RegexOptions.IgnoreCase);
    }


    public static string Apply(string text, IDictionary<string, string> tokens)
    {
      if (text.IsNullOrWhiteSpace())
      {
        return text;
      }

      MatchCollection matches = TokenRegex.Matches(text);

      foreach (Match match in matches)
      {
        if (!match.Success)
        {
          continue;
        }

        string original = match.Value;
        string token = match.Groups[1].Value;

        if (tokens.ContainsKey(token))
        {
          text = text.Replace(original, tokens[token]);
        }
      }

      return text;

      //foreach ((string key, string value) in tokens)
      //{
      //  string tokenKey = key.EnsureStartsWith(BEGIN).EnsureEndsWith(END);
      //  string tokenValue = value; // TODO escape for HTML?

      //  text = text.Replace(tokenKey, value);
      //}

      //return text;
    }
  }
}