using System;

using System.Collections.Generic;

using System.IO;

using System.Threading;

using System.Threading.Tasks;

​

namespace FileCopier

{

    class Program

    {

        static int Main(string[] args)

        {

            if (args.Length != 2)

            {

                ShowUsage(args[0]);

            }

            if(!File.Exists(args[0]))

            {

                Console.WriteLine("Source file list does not exist: " + args[0]);

                ShowUsage(args[0]);

            }

​

            if(!Directory.Exists(args[1]))

            {

                Console.WriteLine("Destination directory does not exist: " + args[1]);

                ShowUsage(args[0]);

            }

​

            string SourceFilePath = args[0];

            string DestinationDir = args[1];

​

            if (!DestinationDir.EndsWith("\\"))

                DestinationDir = DestinationDir + "\\";

​

            CancellationTokenSource cts = new CancellationTokenSource();

            ParallelOptions po = new ParallelOptions();

            po.CancellationToken = cts.Token;

            po.MaxDegreeOfParallelism = Environment.ProcessorCount*2;

​

            string[] FilesToMove = File.ReadAllLines(args[0]);

​

            int Progress = 0;

            object LockerObj = new object();

            List<string> Errors = new List<string>();

​

            DrawProgressBar(Progress, FilesToMove.Length, 25, '*');

            Parallel.ForEach(FilesToMove, po, (line, loopState) =>

            {

                try

                {

                    Interlocked.Increment(ref Progress);

                    lock (LockerObj)

                    {

                        DrawProgressBar(Progress, FilesToMove.Length, 25, '*');

                    }

                    File.Copy(line, DestinationDir + Path.GetFileName(line), true);

                }

                catch(FileNotFoundException)

                {

                    // ignore

                }

                catch (System.Exception ex)

                {

                    lock(Errors)

                    {

                        Errors.Add(ex.GetType().ToString() + ": " + ex.Message);

                    }

                    if (!loopState.IsStopped)

                        loopState.Stop();

                }

            });

​

            if (Errors.Count > 0)

            {

                Console.Clear();

                Console.WriteLine();

                foreach (string e in Errors)

                {

                    Console.WriteLine(e);

                }

                return 1;

            }

            else

                return 0;

        }

​

        private static void ShowUsage(string ProgramName)

        {

            Console.WriteLine();

            Console.WriteLine(ProgramName + " <FullFilePathsList.txt> <DestinationDirectory>");

            Console.WriteLine("Example: " + ProgramName + " files.txt C:\\test");

            Console.WriteLine();

​

            Environment.Exit(1);

        }

​

        public static void DrawProgressBar(int complete, int maxVal, int barSize, char progressCharacter)

        {

            Console.CursorVisible = false;

            int left = Console.CursorLeft;

            decimal perc = (decimal)complete / (decimal)maxVal;

            int chars = (int)Math.Floor(perc / ((decimal)1 / (decimal)barSize));

            string p1 = String.Empty, p2 = String.Empty;

​

            for (int i = 0; i < chars; i++) p1 += progressCharacter;

            for (int i = 0; i < barSize - chars; i++) p2 += progressCharacter;

​

            Console.ForegroundColor = ConsoleColor.Green;

            Console.Write(p1);

            Console.ForegroundColor = ConsoleColor.DarkGreen;

            Console.Write(p2);

​

            Console.ResetColor();

            Console.Write(" {0}%", (perc * 100).ToString("N2"));

            Console.CursorLeft = left;

        }

    }

}

​