def copytree()

in aws_lambda_builders/utils.py [0:0]

• 24 lines of code
• 7 McCabe index (conditional complexity)

def copytree(source, destination, ignore=None):
    """
    Similar to shutil.copytree except that it removes the limitation that the destination directory should
    be present.

    :type source: str
    :param source:
        Path to the source folder to copy

    :type destination: str
    :param destination:
        Path to destination folder

    :type ignore: function
    :param ignore:
        A function that returns a set of file names to ignore, given a list of available file names. Similar to the
        ``ignore`` property of ``shutils.copytree`` method
    """

    if not os.path.exists(source):
        LOG.warning("Skipping copy operation since source %s does not exist", source)
        return

    if not os.path.exists(destination):
        os.makedirs(destination)

        try:
            # Let's try to copy the directory metadata from source to destination
            shutil.copystat(source, destination)
        except OSError as ex:
            # Can't copy file access times in Windows
            LOG.debug("Unable to copy file access times from %s to %s", source, destination, exc_info=ex)

    names = os.listdir(source)
    if ignore is not None:
        ignored_names = ignore(source, names)
    else:
        ignored_names = set()

    for name in names:
        # Skip ignored names
        if name in ignored_names:
            continue

        new_source = os.path.join(source, name)
        new_destination = os.path.join(destination, name)

        if os.path.isdir(new_source):
            copytree(new_source, new_destination, ignore=ignore)
        else:
            shutil.copy2(new_source, new_destination)