maybe_bin_range

clap_num

Function maybe_bin_range 

Source 
pub fn maybe_bin_range<T>(s: &str, min: T, max: T) -> Result<T, String>
where
    <T as Num>::FromStrRadixErr: Display,
    <T as FromStr>::Err: Display,
    T: FromStr + Display + Ord + Num + Unsigned,
Expand description

Validates an unsigned integer value that can be base-10 or base-2 within a range.

This combines maybe_bin and number_range, see the documentation of those functions for details.

ยงExample

This extends the example in maybe_bin, and only allows a range of addresses from 2 (0b10) to 15 (0b1111).

use clap::Parser;
use clap_num::maybe_bin_range;

fn address_in_range(s: &str) -> Result<u8, String> {
    maybe_bin_range(s, 0b10, 0b1111)
}

#[derive(Parser)]
struct Args {
    #[clap(short, long, value_parser=address_in_range)]
    address: u8,
}