dysk_cli/
order.rs

1use std::{
2    fmt,
3    str::FromStr,
4};
5
6/// one of the two sorting directions
7#[derive(Debug, Clone, Copy, PartialEq)]
8pub enum Order {
9    Asc,
10    Desc,
11}
12
13#[derive(Debug)]
14pub struct ParseOrderError {
15    /// the string which couldn't be parsed
16    pub raw: String,
17}
18impl ParseOrderError {
19    pub fn new<S: Into<String>>(s: S) -> Self {
20        Self { raw: s.into() }
21    }
22}
23impl fmt::Display for ParseOrderError {
24    fn fmt(
25        &self,
26        f: &mut fmt::Formatter<'_>,
27    ) -> fmt::Result {
28        write!(
29            f,
30            "{:?} can't be parsed as a sort order. Use 'asc' or 'desc' (or nothing)",
31            self.raw
32        )
33    }
34}
35impl std::error::Error for ParseOrderError {}
36
37impl FromStr for Order {
38    type Err = ParseOrderError;
39    fn from_str(s: &str) -> Result<Self, ParseOrderError> {
40        let s = s.to_lowercase();
41        match s.as_ref() {
42            "a" | "asc" => Ok(Self::Asc),
43            "d" | "desc" => Ok(Self::Desc),
44            _ => Err(ParseOrderError::new(s)),
45        }
46    }
47}
dysk_cli/order.rs

dysk_cli/
order.rs
