using System;

using System.IO; 

using System.Diagnostics; 

public class Program

{

    public static void Main()

    {

        //string filePath = @"C:\build\MSDN\BusinessReportQuarter1-4AnalysisTradesGrossDomesticPoductUSAFargosWellsthecorruptincarnateforecast-revenueand_growthMSDN-Products_SprIntÁroundMSDN-Products_SprIntÁroundbuildMSDNLONGerDocumentsVisualStudio2013ProjectsSuperAAAAAAAAAAAAAAAAAAAAAAAAaaa.txt"; //path too long

        //string filePath  = @"C:\Users\Markus\Documents\Visual Studio 2013\Projects\Butter Cups\bin\Debug\test.txt";

        //string filePath  = @"C:\Users\test.txt";

        string filePath  = @"c:\test.txt.txt";

        //string filePath  = @"\.t"; 

        //string filePath  = @"\."; 

        //string filePath  = @"\ass"; 

        //string filePath  = @"c:\doc."; 

        //string filePath = @"\\server1\mapper\build\MSDN\BusinessReportQuarter1-4AnalysisTradesGrossDomesticPoductUSAFargosWellsthecorruptincarnateforecast-revenueand_growthMSDN-Products_SprIntÁroundMSDN-Products_SprIntÁroundbuildMSDNLONGerDocumentsVisualStudio2013ProjectsSuperAAAAAAAAAAAAAAAAAAAAAAAAaaa.txt"; //path too long

        //string filePath = @"\\server1\mapper\build\MSDN\BusinessReportQuarter1-4AnalysisTradesGrossDomesticPoductUSAFargosWellsthecorruptincarnateforecast-revenueand_growthMSDN-Products_SprIntÁroundMSDN-Products_SprIntÁ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"; 

        string fileNamer = @"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.txt"; //path too long

        string combo = "";

        //string tmpflname = filePath.Replace(".txt", "");

        string tmpflname = ""; 

        int i = filePath.LastIndexOf(".txt");

        if (i >= 0)

            tmpflname = filePath.Substring(0, i) + filePath.Substring(i + ".txt".Length);

        Console.WriteLine("tmpflname="+tmpflname); 

        try{

            combo = System.IO.Path.Combine(filePath, fileNamer); 

            Console.WriteLine("path combine success");

        }

        catch{

            Console.WriteLine("path combine failed");

        }

        if (filePath.IndexOf(@"\\?\UNC\")==0) Console.WriteLine("UNC=true");

        else 

            Console.WriteLine("UNC=false");

        Console.WriteLine("Alpha exists="+Alphaleonis.Win32.Filesystem.File.Exists(filePath).ToString()); 

        string directoryName;

        string fileName;

        string fileExt; 

        string ext; 

        int i = 0;

        Stopwatch s = new Stopwatch();

        long dirnameticks = 0; 

        while (filePath != null)

        {

            //directoryName = "C"; 

            try{

            s.Start();

            directoryName = Path.GetDirectoryName(filePath);

            s.Stop();  

            dirnameticks = s.ElapsedTicks;

            }catch {directoryName="";}

            s.Reset(); 

            s.Start(); 

            string path = ""; 

            if (filePath.IndexOf('\\',0,2)>=0){

                Console.WriteLine("UNC yes=" + filePath);

                    Console.WriteLine("UNC last part=" + filePath.IndexOf('\\',2));

                    Console.WriteLine("UNC last part=" + filePath.IndexOf('\\',filePath.IndexOf('\\',2)+1));

                    Console.WriteLine("UNC last part=" + filePath.Substring(0,filePath.IndexOf('\\',filePath.IndexOf('\\',2)+1)+1));

                    foreach (var p in filePath.Split('\\'))

                               Console.WriteLine("part=" + p);

            }

            if (filePath!=null  && filePath.LastIndexOf('\\') >= 0){

                path = filePath.Substring(0, filePath.LastIndexOf('\\'));

                if (path.Length<3 && filePath.Length<=(path.Length+1)) path=""; 

                else if (path.Length<3 && filePath.Length > (path.Length+1)) path+='\\';    

            }

            s.Stop(); 

            long dirnamestringticks = s.ElapsedTicks;  

            //bool truth = String.Compare(path,directoryName,true)==0?true:false;

            bool truth=false; 

            truth = ((path ?? string.Empty) == (directoryName ?? string.Empty))?true:false;

            fileName = Path.GetFileName(filePath);

            //Get FileName Equivalent

            string filename = ""; 

            int fileLastBackSlash = filePath.LastIndexOf('\\');

            if (fileLastBackSlash >= 0)

                filename = filePath.Substring(fileLastBackSlash+1, filePath.Length - fileLastBackSlash-1);

            else

                filename = filePath;

            bool filenametruth = ((filename ?? string.Empty) == (fileName ?? string.Empty))?true:false;

            fileExt = Path.GetExtension(filePath); 

            //Get Extension

            int fileExtPos = filePath.LastIndexOf('.');

            if (fileExtPos > filePath.LastIndexOf('\\')){

                ext = filePath.Substring(fileExtPos,filePath.Length - fileExtPos);

                if (ext.Length<=1) ext = "";

            }

            else

                ext = "";

            bool fileexttruth = ((fileExt ?? string.Empty) == (ext ?? string.Empty))?true:false;

            Console.WriteLine("GetDirectoryName('{0}')["+dirnameticks+" ticks] returns '{1}'["+dirnamestringticks+" ticks] = '{2}'\t\t{3} filename '{4}'='{5}' {6} ext '{7}'='{8}' {9}",

                filePath, directoryName, path, truth, fileName, filename, filenametruth, fileExt, ext, fileexttruth);

            Console.WriteLine("what is this?  " + filePath.Substring(filePath.LastIndexOf('\\')+1)); 

            filePath = directoryName;

            if (i == 1) //first interation

            {

                filePath = directoryName + @"\";  // this will preserve the previous path

            }

            if (filePath!=null && filePath.Length==3 && filePath.EndsWith("\\")){

                Console.WriteLine("Edge Craze :: GetDirectoryName('{0}') returns '{1}' = '{2}' ",

                    filePath, directoryName, path);

            }

            i++;

        }

    }

}