privilege-escalation-awesome-scripts-suite/winPEAS/winPEASexe/winPEAS/Helpers/ProgressBar.cs

using System;
using System.Text;
using System.Threading;

namespace winPEAS.Helpers
{
    internal class ProgressBar : IDisposable, IProgress<double>
    {
        private const int blockCount = 10;
        private readonly TimeSpan animationInterval = TimeSpan.FromSeconds(1.0 / 8);
        private const string animation = @"|/-\";

        private readonly Timer timer;

        private double currentProgress = 0;
        private string currentText = string.Empty;
        private bool disposed = false;
        private int animationIndex = 0;

        public ProgressBar()
        {
            timer = new Timer(TimerHandler, new object(), animationInterval, animationInterval);
        }

        public void Report(double value)
        {
            // Make sure value is in [0..1] range
            value = Math.Max(0, Math.Min(1, value));
            Interlocked.Exchange(ref currentProgress, value);
        }

        private void TimerHandler(object state)
        {
            lock (timer)
            {
                if (disposed) return;

                int progressBlockCount = (int)(currentProgress * blockCount);
                int percent = (int)(currentProgress * 100);
                string text = string.Format("[{0}{1}] {2,3}% {3}",
                    new string('#', progressBlockCount), new string('-', blockCount - progressBlockCount),
                    percent,
                    animation[animationIndex++ % animation.Length]);
                UpdateText(text);
            }
        }

        private void UpdateText(string text)
        {
            // Get length of common portion
            int commonPrefixLength = 0;
            int commonLength = Math.Min(currentText.Length, text.Length);
            while (commonPrefixLength < commonLength && text[commonPrefixLength] == currentText[commonPrefixLength])
            {
                commonPrefixLength++;
            }

            // Backtrack to the first differing character
            StringBuilder outputBuilder = new StringBuilder();
            outputBuilder.Append('\b', currentText.Length - commonPrefixLength);

            // Output new suffix
            outputBuilder.Append(text.Substring(commonPrefixLength));

            // If the new text is shorter than the old one: delete overlapping characters
            int overlapCount = currentText.Length - text.Length;
            if (overlapCount > 0)
            {
                outputBuilder.Append(' ', overlapCount);
                outputBuilder.Append('\b', overlapCount);
            }

            Console.Write(outputBuilder);
            currentText = text;
        }

        public void Dispose()
        {
            lock (timer)
            {
                disposed = true;
                UpdateText(string.Empty);
                timer.Dispose();
            }
        }

    }
}