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use clap::{Arg, Command};
fn build_cli() -> Command {
Command::new(env!("CARGO_PKG_NAME"))
.subcommand_required(true)
.subcommand(
Command::new("completions")
.about("Generate shell completions")
.arg(
Arg::new("shell")
.value_name("SHELL")
.help("The shell to generate the completions for")
.required(true)
.value_parser(
clap::builder::EnumValueParser::<clap_complete_command::Shell>::new(),
),
),
)
}
fn main() {
let matches = build_cli().get_matches();
match matches.subcommand() {
Some(("completions", sub_matches)) => {
if let Some(shell) = sub_matches.get_one::<clap_complete_command::Shell>("shell") {
let mut command = build_cli();
shell.generate(&mut command, &mut std::io::stdout());
}
}
_ => {
unreachable!("Exhausted list of subcommands and `subcommand_required` prevents `None`")
}
}
}
|
