Move all your torrents in QBittorrent

main.py

# Copyright (c) 2015, Jimmy Zelinskie.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

# To move the paths of all your torrents at once, we need to replace references
# to the paths in all of the .fastresume files located in the BT_BACKUP directory.
# These files are bencoded and contain two different paths, one for libtorrent and
# the other for qBittorrent.

import os
import sys

from bencode import bdecode, bencode


# --- CHANGE THIS ---
# I happen to be using cygwin Python.
# If you're using native Windows Python, use forward slashes (i.e. 'C:/Windows').
BACKUP_PATH  = '/cygdrive/c/Users/Jimi/AppData/Local/qBittorrent/BT_BACKUP'

# -- CHANGE THIS ---
# These are what you're finding and replacing.
# Use forward slashes on Windows.
FIND_QBT_PATH = 'F:/Anime/'
REPLACE_QBT_PATH = 'F:/'

# Don't touch these.
# libtorrent expects backslashes in paths for Windows.
FIND_SAVE_PATH = os.path.normpath(FIND_QBT_PATH)
REPLACE_SAVE_PATH = os.path.normpath(REPLACE_QBT_PATH)


def main():
  for _, _, files in os.walk(BACKUP_PATH):
    for name in files:
      if name.endswith('.fastresume'):
        path = BACKUP_PATH + '/' + name
        with open(path, 'r+') as raw:
          contents = raw.read()
          try:
            dct = bdecode(contents) 
          except:
            continue
          dct['qBt-savePath'] = dct['qBt-savePath'].replace(FIND_QBT_PATH, REPLACE_QBT_PATH)
          dct['save_path'] = dct['save_path'].replace(FIND_SAVE_PATH, REPLACE_SAVE_PATH)
          new_contents = bencode(dct)
          raw.seek(0)
          raw.write(new_contents)
          raw.truncate()


if __name__ == '__main__':
  main()