mirror of
https://github.com/clap-rs/clap
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42 lines
1.2 KiB
Rust
42 lines
1.2 KiB
Rust
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// A functional translation of the example at
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// https://docs.rs/clap/2.31.2/clap/struct.App.html#method.group
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#[macro_use]
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extern crate structopt;
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use structopt::StructOpt;
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use structopt::clap::ArgGroup;
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// This function is not needed, we can insert everything in the group
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// attribute, but, as it might be long, using a function is more
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// lisible.
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fn vers_arg_group() -> ArgGroup<'static> {
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// As the attributes of the struct are executed before the struct
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// fields, we can't use .args(...), but we can use the group
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// attribute on the fields.
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ArgGroup::with_name("vers")
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.required(true)
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}
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#[derive(StructOpt, Debug)]
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#[structopt(raw(group = "vers_arg_group()"))]
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struct Opt {
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/// set the version manually
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#[structopt(long = "set-ver", group = "vers")]
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set_ver: Option<String>,
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/// auto increase major
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#[structopt(long = "major", group = "vers")]
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major: bool,
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/// auto increase minor
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#[structopt(long = "minor", group = "vers")]
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minor: bool,
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/// auto increase patch
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#[structopt(long = "patch", group = "vers")]
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patch: bool,
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}
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fn main() {
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let opt = Opt::from_args();
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println!("{:?}", opt);
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}
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