Copy files of xspf playlist (relative paths) to target folder, preserving folder structure

copy_xspf_to_folder.py

#!/usr/bin/env python3

import argparse
import os
from pathlib import Path
import shutil
import sys
from xml.dom import minidom

parser = argparse.ArgumentParser(description='Copy files of xspf playlist to target folder')
parser.add_argument('playlist')
parser.add_argument('target')


def build_folder_structure(file_path, target_folder):
    # Joining with an absolute path would cause destruction
    assert not file_path.is_absolute()
    full_target_path = target_folder.joinpath(file_path)
    assert not full_target_path.parent.exists() or full_target_path.parent.is_dir()
    if not full_target_path.parent.exists():
        full_target_path.parent.mkdir(parents=True, exist_ok=True)
    return full_target_path


def copy_file(file_path, target_path, base_dir):
    full_target_path = build_folder_structure(file_path, target_path)
    # Joining with an absolute path would cause destruction
    assert not file_path.is_absolute()
    source_file_path = base_dir.joinpath(file_path)
    if full_target_path.exists():
        print('File already exist: {}'.format(full_target_path))
    elif not source_file_path.exists():
        print('File not found: {}'.format(source_file_path))
    else:
        print('Copy {0}'.format(file_path))
        shutil.copy(source_file_path, full_target_path)


def copy_playlist_files(playlist, target_folder, base_dir):
    with open(playlist, 'r') as f:
        xspf = minidom.parse(f)
    for location in xspf.getElementsByTagName('location'):
        file_path = Path(location.firstChild.nodeValue)
        copy_file(file_path, target_folder, base_dir)


if __name__ == '__main__':
    args = parser.parse_args()
    playlist = Path(args.playlist)
    target_folder = Path(args.target)

    if not playlist.exists():
        print('Playlist not found', file=sys.stderr)
        sys.exit(1)
    if not target_folder.is_dir():
        print('Target folder not found or not a directory', file=sys.stderr)
        sys.exit(1)

    base_dir = playlist.parent
    copy_playlist_files(playlist, target_folder, base_dir)