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use clap::{arg, command, Parser};
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#[derive(Debug, Parser)]
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#[command(version, about, long_about = None)]
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pub struct Ctx {
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    // 位置参数
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    #[arg(short, long, help = "是否删除", default_value_t = true)]
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    pub rm: bool,
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    // 会被clap忽略
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    #[clap(skip)]
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    pub dir: String,
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    // 子命令
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    #[clap(subcommand)]
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    pub sub: Sub,
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    // 跟随参数，在 "-arg value" 后面
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    pub targets: Vec<String>,
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}
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pub struct Sub {
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    #[arg(short, long, help = "数量", default_value = 0)]
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    pub val: u8,
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}
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fn main() {
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    let ctx = Ctx::parse();
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    println!("{:?}", ctx);
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}