wabbajack/Wabbajack.RateLimiter/NumberExtensions.cs

using System;

namespace Wabbajack.Common;

public static class NumberExtensions
{
    private static readonly string[]
        Suffix = {"B", "KB", "MB", "GB", "TB", "PB", "EB"}; // Longs run out around EB

    public static string ToFileSizeString(this long byteCount)
    {
        if (byteCount == 0)
            return "0" + Suffix[0];
        var bytes = Math.Abs(byteCount);
        var place = Convert.ToInt32(Math.Floor(Math.Log(bytes, 1024)));
        var num = Math.Round(bytes / Math.Pow(1024, place), 1);
        return Math.Sign(byteCount) * num + Suffix[place];
    }

    public static string ToFileSizeString(this int byteCount)
    {
        return ToFileSizeString((long) byteCount);
    }
}