def main()

in core/export.py [0:0]

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

def main(ctx: Ctx, log: Logger, dry_run: bool):
    """Export data to file or standard output."""

    format = ctx.format
    if format is None:
        if ctx.file_name:
            format = Path(ctx.file_name).suffix.lower()[1:]
            log.debug(f"export file format guessed from file extension: {format}")
        else:
            format = "yaml"
            log.debug(f"assuming export file format: {format}")

    if dry_run:
        return

    node = ctx.get_binding("state").node
    msg_state = "everything" if node is None else f"'{node}'"
    msg_file_name = f"'{ctx.file_name}'" if ctx.file_name else "standard output"
    log.info(f"exporting {msg_state} to {msg_file_name}...")

    if ctx.file_name:
        with open(Path(ctx.base_dir) / ctx.file_name, "w") as f:
            serialize(f, ctx.state, format=format)
    else:
        serialize(sys.stdout, ctx.state, format=format)