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use clap::{ArgGroup, Parser};
#[derive(Parser)]
#[command(author, version, about, long_about = None)]
#[command(group(
ArgGroup::new("vers")
.required(true)
.args(["set_ver", "major", "minor", "patch"]),
))]
struct Cli {
#[arg(long, value_name = "VER")]
set_ver: Option<String>,
#[arg(long)]
major: bool,
#[arg(long)]
minor: bool,
#[arg(long)]
patch: bool,
#[arg(group = "input")]
input_file: Option<String>,
#[arg(long, group = "input")]
spec_in: Option<String>,
#[arg(short, requires = "input")]
config: Option<String>,
}
fn main() {
let cli = Cli::parse();
let mut major = 1;
let mut minor = 2;
let mut patch = 3;
let version = if let Some(ver) = cli.set_ver.as_deref() {
ver.to_string()
} else {
let (maj, min, pat) = (cli.major, cli.minor, cli.patch);
match (maj, min, pat) {
(true, _, _) => major += 1,
(_, true, _) => minor += 1,
(_, _, true) => patch += 1,
_ => unreachable!(),
};
format!("{}.{}.{}", major, minor, patch)
};
println!("Version: {}", version);
if let Some(config) = cli.config.as_deref() {
let input = cli
.input_file
.as_deref()
.unwrap_or_else(|| cli.spec_in.as_deref().unwrap());
println!("Doing work using input {} and config {}", input, config);
}
}