13. Strings and Text Processing 12. ParseURL

using System;

class ParseURL
{
    static void Main()
    {
        string str = @"http://www.devbg.org/forum/index.php";

        int index2Dots = 0;
        int index2Slash = 0;
        int index1Slash = 0;

        for (int i = 0; i < str.Length-2 ; i++)
        {
            if (str.Substring(i, 1) == ":")
            {
                index2Dots = i;
            }
            else if ((str.Substring(i, 2) == "//"))
            {
                index2Slash = i;
                for (int k = i+2; k < str.Length; k++)
                {
                    if (str.Substring(k, 1) == "/")
                    {
                        index1Slash = k;
                        break;
                    }
                }
            }
        }
        int protokolLength = index2Dots;
        int serverLength = index1Slash - index2Slash;
        int resourceLength = str.Length-1 - index1Slash;

        string protokolStr = str.Substring(0, protokolLength);
        string serverStr = str.Substring(index2Slash+1, serverLength);
        string resourceStr = str.Substring(index1Slash+1, resourceLength);

        Console.WriteLine(@"[protokol] = ""{0}""",protokolStr);
        Console.WriteLine(@"[server] = ""{0}""", serverStr);
        Console.WriteLine(@"[resource] = ""{0}""", resourceStr);
    }
}