ex_cli/cli/
depth.rs

1use crate::error::{MyError, MyResult};
2use regex::{Match, Regex};
3use std::num::ParseIntError;
4
5#[derive(Clone, Default)]
6pub struct RecurseDepth {
7    pub min_depth: Option<usize>,
8    pub max_depth: Option<usize>,
9}
10
11impl RecurseDepth {
12    pub fn from_str(value: &str) -> MyResult<Self> {
13        match value.parse::<usize>() {
14            Ok(value) => Ok(Self::from_pair(Some(1), Some(value + 1))),
15            Err(_) => {
16                let re = Regex::new("^(\\d+)?-(\\d+)?$")?;
17                match re.captures(value) {
18                    Some(captures) => {
19                        let min_depth = parse_integer(captures.get(1))?;
20                        let max_depth = parse_integer(captures.get(2))?;
21                        let min_depth = min_depth.map(|x| x + 1).or(Some(1));
22                        let max_depth = max_depth.map(|x| x + 1);
23                        Ok(Self::from_pair(min_depth, max_depth))
24                    }
25                    None => Err(MyError::create_clap("depth", value)),
26                }
27            }
28        }
29    }
30
31    fn from_pair(min_depth: Option<usize>, max_depth: Option<usize>) -> Self {
32        Self { min_depth, max_depth }
33    }
34}
35
36fn parse_integer(matched: Option<Match>) -> Result<Option<usize>, ParseIntError> {
37    match matched {
38        Some(m) => m.as_str().parse().map(|x| Some(x)),
39        None => Ok(None),
40    }
41}
ex_cli/cli/depth.rs

ex_cli/cli/
depth.rs
