rust/rhg/src/main.rs

46503:d8730ff51d5a

            .help("repository root directory")
            .short("-R")
            .long("--repository")
            .value_name("REPO")
            .takes_value(true),
    )
}

fn main() {
    env_logger::init();

    let args = subcommand_matches
        .expect("no subcommand arguments from clap despite AppSettings::SubcommandRequired");

    // Global arguments can be in either based on e.g. `hg -R ./foo log` v.s.
    // `hg log -R ./foo`
    let global_arg =
        |name| args.value_of_os(name).or_else(|| matches.value_of_os(name));

    let repo_path = global_arg("repository").map(Path::new);
    let result = (|| -> Result<(), CommandError> {
        let config = hg::config::Config::load()?;
        run(&ui, &config, repo_path, args)
    })();

    let exit_code = match result {
        Ok(_) => exitcode::OK,

46504:2e5dd18d6dc3

            .help("repository root directory")
            .short("-R")
            .long("--repository")
            .value_name("REPO")
            .takes_value(true),
    )
    .arg(
        Arg::with_name("config")
            .help("set/override config option (use 'section.name=value')")
            .long("--config")
            .value_name("CONFIG")
            .takes_value(true)
            // Ok: `--config section.key1=val --config section.key2=val2`
            .multiple(true)
            // Not ok: `--config section.key1=val section.key2=val2`
            .number_of_values(1),
    )
}

fn main() {
    env_logger::init();

    let args = subcommand_matches
        .expect("no subcommand arguments from clap despite AppSettings::SubcommandRequired");

    // Global arguments can be in either based on e.g. `hg -R ./foo log` v.s.
    // `hg log -R ./foo`
    let value_of_global_arg =
        |name| args.value_of_os(name).or_else(|| matches.value_of_os(name));
    // For arguments where multiple occurences are allowed, return a
    // possibly-iterator of all values.
    let values_of_global_arg = |name: &str| {
        let a = matches.values_of_os(name).into_iter().flatten();
        let b = args.values_of_os(name).into_iter().flatten();
        a.chain(b)
    };

    let repo_path = value_of_global_arg("repository").map(Path::new);
    let result = (|| -> Result<(), CommandError> {
        let config_args = values_of_global_arg("config")
            // `get_bytes_from_path` works for OsStr the same as for Path
            .map(hg::utils::files::get_bytes_from_path);
        let config = hg::config::Config::load(config_args)?;
        run(&ui, &config, repo_path, args)
    })();

    let exit_code = match result {
        Ok(_) => exitcode::OK,