mirror of
https://github.com/clap-rs/clap
synced 2024-12-13 14:22:34 +00:00
17193bd074
Fixes #3500
53 lines
1.5 KiB
Rust
53 lines
1.5 KiB
Rust
use clap::error::Error;
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use clap::{Arg, ArgMatches, Args, Command, FromArgMatches, Parser};
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#[derive(Debug)]
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struct CliArgs {
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foo: bool,
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bar: bool,
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quuz: Option<String>,
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}
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impl FromArgMatches for CliArgs {
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fn from_arg_matches(matches: &ArgMatches) -> Result<Self, Error> {
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Ok(Self {
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foo: matches.is_present("foo"),
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bar: matches.is_present("bar"),
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quuz: matches.value_of("quuz").map(|quuz| quuz.to_owned()),
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})
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}
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fn update_from_arg_matches(&mut self, matches: &ArgMatches) -> Result<(), Error> {
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self.foo |= matches.is_present("foo");
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self.bar |= matches.is_present("bar");
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if let Some(quuz) = matches.value_of("quuz") {
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self.quuz = Some(quuz.to_owned());
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}
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Ok(())
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}
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}
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impl Args for CliArgs {
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fn augment_args(cmd: Command<'_>) -> Command<'_> {
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cmd.arg(Arg::new("foo").short('f').long("foo"))
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.arg(Arg::new("bar").short('b').long("bar"))
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.arg(Arg::new("quuz").short('q').long("quuz").takes_value(true))
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}
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fn augment_args_for_update(cmd: Command<'_>) -> Command<'_> {
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cmd.arg(Arg::new("foo").short('f').long("foo"))
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.arg(Arg::new("bar").short('b').long("bar"))
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.arg(Arg::new("quuz").short('q').long("quuz").takes_value(true))
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}
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}
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#[derive(Parser, Debug)]
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struct Cli {
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#[clap(short, long)]
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top_level: bool,
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#[clap(flatten)]
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more_args: CliArgs,
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}
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fn main() {
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let args = Cli::parse();
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println!("{:#?}", args);
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}
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