hyper_scripter/
env_pair.rs

1use crate::error::{DisplayError, DisplayResult, FormatCode::EnvPair as EnvPairCode};
2use crate::util::{impl_de_by_from_str, impl_ser_by_to_string};
3use std::str::FromStr;
4
5#[derive(Display, Debug, Clone, Eq, PartialEq)]
6#[display(fmt = "{}={}", key, val)]
7pub struct EnvPair {
8    pub key: String,
9    pub val: String,
10}
11impl_ser_by_to_string!(EnvPair);
12impl_de_by_from_str!(EnvPair);
13
14impl EnvPair {
15    /// 使用此函式前需確保 line 非空字串
16    pub fn process_line(line: &str, env_vec: &mut Vec<Self>) {
17        let env = line.split_whitespace().next().unwrap();
18        if env_vec.iter().find(|p| env == p.key).is_some() {
19            // previous env is stronger, use it
20        } else if let Ok(val) = std::env::var(env) {
21            env_vec.push(EnvPair {
22                key: env.to_owned(),
23                val,
24            });
25        }
26    }
27    pub fn sort(v: &mut Vec<Self>) {
28        v.sort_by(|a, b| a.key.cmp(&b.key));
29    }
30}
31impl FromStr for EnvPair {
32    type Err = DisplayError;
33    fn from_str(s: &str) -> DisplayResult<Self> {
34        if let Some((key, val)) = s.split_once('=') {
35            Ok(EnvPair {
36                key: key.to_owned(),
37                val: val.to_owned(),
38            })
39        } else {
40            EnvPairCode.to_display_res(s.to_owned())
41        }
42    }
43}
hyper_scripter/env_pair.rs

hyper_scripter/
env_pair.rs
