INNER CODE UNIT · Python

need_to_create_symlink

kblin/ncbi-genome-download · ncbi_genome_download/core.py:587

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 = NgdConfig.get_fileending(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

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