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use clap::{arg, command, ArgGroup};
fn main() {
let matches = command!()
.arg(arg!(--"set-ver" <VER> "set version manually").required(false))
.arg(arg!(--major "auto inc major"))
.arg(arg!(--minor "auto inc minor"))
.arg(arg!(--patch "auto inc patch"))
.group(
ArgGroup::new("vers")
.required(true)
.args(&["set-ver", "major", "minor", "patch"]),
)
.arg(arg!([INPUT_FILE] "some regular input").group("input"))
.arg(
arg!(--"spec-in" <SPEC_IN> "some special input argument")
.required(false)
.group("input"),
)
.arg(arg!(config: -c <CONFIG>).required(false).requires("input"))
.get_matches();
let mut major = 1;
let mut minor = 2;
let mut patch = 3;
let version = if let Some(ver) = matches.value_of("set-ver") {
ver.to_string()
} else {
let (maj, min, pat) = (
matches.is_present("major"),
matches.is_present("minor"),
matches.is_present("patch"),
);
match (maj, min, pat) {
(true, _, _) => major += 1,
(_, true, _) => minor += 1,
(_, _, true) => patch += 1,
_ => unreachable!(),
};
format!("{}.{}.{}", major, minor, patch)
};
println!("Version: {}", version);
if matches.is_present("config") {
let input = matches
.value_of("INPUT_FILE")
.unwrap_or_else(|| matches.value_of("spec-in").unwrap());
println!(
"Doing work using input {} and config {}",
input,
matches.value_of("config").unwrap()
);
}
}