peach-workspace/peach-web/src/config.rs

// Kind thanks to Alex Wennerberg (https://alexwennerberg.com/) for writing
// this code and offered it under the 0BSD (BDS 0-Clause) license.

use std::fs::File;
use std::io::{self, BufRead};
use std::path::Path;

// Ini-like key=value configuration with global config only (no subsections).
#[derive(Debug, PartialEq)]
pub struct Config {
    pub disable_auth: bool,
    pub standalone_mode: bool,
}

impl Default for Config {
    fn default() -> Self {
        Self {
            disable_auth: false,
            standalone_mode: true,
        }
    }
}

impl Config {
    pub fn match_kv(&mut self, key: &str, value: &str) {
        match key {
            "disable_auth" => self.disable_auth = value.parse().unwrap(),
            "standalone_mode" => self.standalone_mode = value.parse().unwrap(),
            _ => {}
        }
    }
}

impl Config {
    pub fn from_file<P: AsRef<Path>>(path: P) -> Result<Config, std::io::Error> {
        let file = File::open(path)?;
        let mut conf = Config::default();

        for l in io::BufReader::new(file).lines() {
            let line = l?;
            if line.is_empty() {
                continue;
            }
            if let Some(i) = line.find('=') {
                let key = &line[..i];
                let value = &line[i + 1..];
                conf.match_kv(key, value);
            } else {
                // panic!("Invalid config")
            }
        }
        Ok(conf)
    }
}