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use clap::{app_from_crate, arg, ErrorKind};
fn main() {
let mut app = app_from_crate!()
.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"))
.arg(arg!([INPUT_FILE] "some regular input"))
.arg(arg!(--"spec-in" <SPEC_IN> "some special input argument").required(false))
.arg(arg!(config: -c <CONFIG>).required(false));
let matches = app.get_matches_mut();
let mut major = 1;
let mut minor = 2;
let mut patch = 3;
let version = if let Some(ver) = matches.value_of("set-ver") {
if matches.is_present("major") || matches.is_present("minor") || matches.is_present("patch")
{
app.error(
ErrorKind::ArgumentConflict,
"Can't do relative and absolute version change",
)
.exit();
}
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, false, false) => major += 1,
(false, true, false) => minor += 1,
(false, false, true) => patch += 1,
_ => {
app.error(
ErrorKind::ArgumentConflict,
"Cam only modify one version field",
)
.exit();
}
};
format!("{}.{}.{}", major, minor, patch)
};
println!("Version: {}", version);
if matches.is_present("config") {
let input = matches
.value_of("INPUT_FILE")
.or_else(|| matches.value_of("spec-in"))
.unwrap_or_else(|| {
app.error(
ErrorKind::MissingRequiredArgument,
"INPUT_FILE or --spec-in is required when using --config",
)
.exit()
});
println!(
"Doing work using input {} and config {}",
input,
matches.value_of("config").unwrap()
);
}
}