PathHelper.cs

//--------------------------------------------------//
// Created by basicx-StrgV                          //
// https://github.com/basicx-StrgV/                 //
//--------------------------------------------------//
using System.IO;
 
namespace WGetNET.Helper
{
    internal static class PathHelper
    {
        public enum PathType
        {
            Generic,
            URI,
            Directory
        }
 
        public static string TrimLastPathPart(string path, PathType type)
        {
            char separatorChar = '/';
            switch (type)
            {
                case PathType.URI:
                    separatorChar = '/';
                    break;
                case PathType.Directory:
                    separatorChar = Path.DirectorySeparatorChar;
                    break;
            }
 
            int lastSeparatorIndex = -1;
            for (int i = 0; i < path.Length; i++)
            {
                if (path[i].Equals(separatorChar))
                {
                    lastSeparatorIndex = i;
                }
            }
 
            if (lastSeparatorIndex > -1)
            {
#if NETCOREAPP3_1_OR_GREATER
                return path[..lastSeparatorIndex];
#elif NETSTANDARD2_0
                return path.Remove(lastSeparatorIndex);
#endif
            }
 
            return path;
        }
    }
}