# Cote
A simple option manager manage the [`AOpt`](aopt::opt::AOpt), support auto generate help message.
## Setup
`cargo add cote`
## Enable Features from aopt
### Enable `sync` feature
If you want the utils of current crate implement `Send` and `Sync`, you can enable `sync` feature.
```toml
[dependencies]
cote = { version = "*", features = [ "sync" ] }
```
## Documents
See [`reference`](crate::_reference) for more information.
### Example
#### Using [`Cote`](crate::cote_derive::Cote) generate struct from command line options.
```rust
use aopt::opt::Pos;
use cote::prelude::*;
fn main() -> cote::Result<()> {
#[derive(Debug, Cote)]
pub struct Cli {
/// A flag option named `--flag`
flag: bool,
/// Comment here set the help message for option
#[arg(alias = "-n")]
name: String,
#[arg(help = "`Option` mean the option is not force required")]
nick: Option<String>,
/// A position option at index 1
#[arg(index = "1")]
from: Pos<String>,
/// A positon option collect argument start from 2
#[pos(index = 2..)]
to: Vec<String>,
}
let cli = Cli::parse(Args::from(["app", "-nLily", "src", "foo", "bar"]))?;
assert!(!cli.flag);
assert_eq!(cli.name, String::from("Lily"));
assert_eq!(cli.nick, None);
assert_eq!(cli.from, Pos(String::from("src")));
assert_eq!(cli.to, vec![String::from("foo"), String::from("bar")]);
let cli = Cli::parse(Args::from(["app", "--name", "Lily", "src", "foo", "bar"]))?;
assert!(!cli.flag);
assert_eq!(cli.name, String::from("Lily"));
assert_eq!(cli.nick, None);
assert_eq!(cli.from, Pos(String::from("src")));
assert_eq!(cli.to, vec![String::from("foo"), String::from("bar")]);
assert!(Cli::parse(Args::from(["app", "--nick", "Lily", "src", "foo", "bar"])).is_err());
Ok(())
}
```
## LICENSE
MPL-2.0