playlistmanager/PlaylistManager/frmPlaylistAdapt.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace PlaylistManager
{
    public partial class frmPlaylistAdapt : Form
    {
        public frmPlaylistAdapt()
        {
            InitializeComponent();
        }

        #region Kontextmenü MusicFolder

        private void menMusicFolderAdd_Click(object sender, EventArgs e)
        {
            if (FBD.ShowDialog() == DialogResult.OK)
            {
                bool itmexists = false;
                string ordner = FBD.SelectedPath;
                if (ordner.EndsWith(@"\") == false)
                    ordner += @"\";

                foreach (ListViewItem itm in lstMusicFolders.Items)
                {
                    if ((itm.Text ?? "") == (ordner ?? ""))
                    {
                        itmexists = true;
                        break;
                    }
                }

                if (itmexists == false)
                {
                    var itm = new ListViewItem(ordner);
                    lstMusicFolders.Items.Add(itm);
                }

            }
        }

        private void menMusicFolderRemove_Click(object sender, EventArgs e)
        {
            if (lstMusicFolders.SelectedItems.Count > 0)
            {
                foreach (ListViewItem itm in lstMusicFolders.SelectedItems)
                    itm.Remove();
            }
        }


        #endregion


        #region Kontextmenü Replace

        private void menReplaceFolderRemove_Click(object sender, EventArgs e)
        {
            if (lstReplaceFolders.SelectedItems.Count > 0)
            {
                foreach (ListViewItem itm in lstReplaceFolders.SelectedItems)
                    itm.Remove();
            }
        }

        private void menReplaceFolderAdd_Click(object sender, EventArgs e)
        {
            var frm = new frmPathSelect();
            if (frm.ShowDialog() == DialogResult.OK)
            {
                bool itmexists = false;
                string ordner = frm.txtPath.Text;

                if (ordner.EndsWith(@"\") == false)
                    ordner += @"\";
                foreach (ListViewItem itm in lstReplaceFolders.Items)
                {
                    if ((itm.Text ?? "") == (ordner ?? ""))
                    {
                        itmexists = true;
                        break;
                    }
                }

                if (itmexists == false)
                {
                    var itm = new ListViewItem(ordner);
                    lstReplaceFolders.Items.Add(itm);
                }
            }
        }


        #endregion


        private void btnLoadPlaylist_Click(object sender, EventArgs e)
        {
            if (OFD.ShowDialog() == DialogResult.OK)
            {
                var sr = new StreamReader(OFD.FileName, System.Text.Encoding.Default);
                var pfade = new List<PLLine>();
                while (sr.EndOfStream == false)
                    pfade.Add(new PLLine(sr.ReadLine()));
                sr.Close();


                string replacepath;
                foreach (PLLine pfad in pfade)
                {
                    if (pfad.IsPath & (pfad.Path ?? "") == (pfad.OriginalPath ?? "")) // Line ist Pfad und ist auch noch unverändert
                    {
                        replacepath = null;
                        foreach (ListViewItem replaceitm in lstReplaceFolders.Items)
                        {
                            if (pfad.Path.StartsWith(replaceitm.Text))
                            {
                                replacepath = replaceitm.Text; // Zu ersetzenden Teil des Pfades gefunden
                                break;
                            }
                        }

                        // pfad.path mit neuem Pfad versehen bis einer gefunden wurde der existiert oder keiner mehr übrig ist.

                    }
                }

            }
        }

        private void frmPlaylistAdapt_Load(object sender, EventArgs e)
        {

        }
    }

    public class PLLine
    {
        private string line;
        public string? OriginalPath;
        public string? Path;
        public bool IsPath;


        public PLLine(string line)
        {
            this.line = line;
            if (line.StartsWith("#") == false)
            {
                OriginalPath = line;
                Path = line;
                IsPath = true;
            }

        }


    }
}