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// Note: this requires the `unstable-multicall` feature
use std::process::exit;
use clap::{Arg, Command};
fn applet_commands() -> [Command<'static>; 2] {
[
Command::new("true").about("does nothing successfully"),
Command::new("false").about("does nothing unsuccessfully"),
]
}
fn main() {
let cmd = Command::new(env!("CARGO_CRATE_NAME"))
.multicall(true)
.subcommand(
Command::new("busybox")
.arg_required_else_help(true)
.subcommand_value_name("APPLET")
.subcommand_help_heading("APPLETS")
.arg(
Arg::new("install")
.long("install")
.help("Install hardlinks for all subcommands in path")
.exclusive(true)
.takes_value(true)
.default_missing_value("/usr/local/bin")
.use_value_delimiter(false),
)
.subcommands(applet_commands()),
)
.subcommands(applet_commands());
let matches = cmd.get_matches();
let mut subcommand = matches.subcommand();
if let Some(("busybox", cmd)) = subcommand {
if cmd.occurrences_of("install") > 0 {
unimplemented!("Make hardlinks to the executable here");
}
subcommand = cmd.subcommand();
}
match subcommand {
Some(("false", _)) => exit(1),
Some(("true", _)) => exit(0),
_ => unreachable!("parser should ensure only valid subcommand names are used"),
}
}
|
