core.py 文件源码

def need_to_create_symlink(directory, checksums, filetype, symlink_path):
    """Check if we need to create a symlink for an existing file"""
    # If we don't have a symlink path, we don't need to create a symlink
    if symlink_path is None:
        return False

    pattern = EFormats.get_content(filetype)
    filename, _ = get_name_and_checksum(checksums, pattern)
    full_filename = os.path.join(directory, filename)
    symlink_name = os.path.join(symlink_path, filename)

    if os.path.islink(symlink_name):
        existing_link = os.readlink(symlink_name)
        if full_filename == existing_link:
            return False

    return True