relocate_qbittorrent_torrents.py

#!/usr/bin/env python3
import os
import bencode
import re
import sys

# Inspired by https://github.com/ctminime/QB_Migrate_to_Linux
# Need `pip3 install bencode.py`.
# Run in folder like "/home/user/.local/share/data/qBittorrent/BT_backup/" (configured in qBitTorrent).
# Takes 2 parameters:
# - path (string) change from,
# - path (string) change to.
# See below for Win -> Unix paths convertion help.
assert len(sys.argv) > 2, "Please specify first path change from, next path change to."
save_path_from = sys.argv[1]
save_path_to = sys.argv[2]

# For each file in the directory that has the extension ".fastresume"
directory_path = os.getcwd()
for file in os.listdir(directory_path):
    if file.endswith(".fastresume"):
        file_path = os.path.join(directory_path, file)
        try:
            torrent = bencode.bread(file_path)
        except:
            print(file_path, " is not a valid fastresume file.")
            continue
        save_path_orig = (torrent['save_path'])
        if save_path_orig.startswith(save_path_from):
            save_path = save_path_orig.replace(save_path_from, save_path_to)
            # Uncomment below to convert Win -> Unix
            #save_path = re.sub("\\\\", "/", save_path)
            # Need change 2 locations for qBitTorrent.
            torrent['save_path'] = save_path
            torrent['qBt-savePath'] = save_path
            bencode.bwrite(torrent, file_path)
            # Print the new torrent path
            print("%s: %s -> %s" % (os.path.basename(file_path), save_path_orig, torrent['save_path']))