fn parse_args()

in sources/api/thar-be-updates/src/main.rs [78:118]

• 37 lines of code
• 9 McCabe index (conditional complexity)

fn parse_args(args: std::env::Args) -> Args {
    let mut subcommand = None;
    let mut log_level = None;
    let mut socket_path = None;

    let mut iter = args.skip(1).peekable();
    while let Some(arg) = iter.next() {
        match arg.as_ref() {
            "--log-level" => {
                let log_level_str = iter
                    .next()
                    .unwrap_or_else(|| usage_msg("Did not give argument to --log-level"));
                log_level = Some(LevelFilter::from_str(&log_level_str).unwrap_or_else(|_| {
                    usage_msg(format!("Invalid log level '{}'", log_level_str))
                }));
            }

            "--socket-path" => {
                socket_path = Some(
                    iter.next()
                        .unwrap_or_else(|| usage_msg("Did not give argument to --socket-path")),
                )
            }
            // Assume any arguments not prefixed with '-' is a subcommand
            s if !s.starts_with('-') => {
                if subcommand.is_some() {
                    usage();
                }
                subcommand =
                    Some(serde_plain::from_str::<UpdateCommand>(s).unwrap_or_else(|_| usage()));
            }
            _ => usage(),
        }
    }

    Args {
        subcommand: subcommand.unwrap_or_else(|| usage()),
        log_level: log_level.unwrap_or_else(|| LevelFilter::Info),
        socket_path: socket_path.unwrap_or_else(|| constants::API_SOCKET.to_string()),
    }
}