2 releases
0.1.1 | Sep 22, 2019 |
---|---|
0.1.0 | Sep 22, 2019 |
#30 in #ron
11KB
111 lines
Fetch File
Quick trait to impl struct to turn it into a quick config file. Json, Ron, or Bincode can be used.
use std::env;
use std::error::Error;
use std::path::PathBuf;
use serde::*;
use serde::de::DeserializeOwned;
use fetch_file::Fetchable;
#[derive(Deserialize, Serialize)]
pub struct Config {
setting1: usize,
setting2: usize
}
impl Default for Config {
fn default() -> Self {
Config {
setting1: 0,
setting2: 5,
}
}
}
impl Fetchable for Config {
fn deserialize_l<T>(f_path: &PathBuf) -> Result<T, Box<dyn Error>>
where T: DeserializeOwned + Default + Fetchable {
// Ron
Config::deserialize_ron(f_path)
// Json
//Config::deserialize_json(f_path)
// bin
//Config::deserialize_bin(f_path)
}
fn serialize_l(&self) -> Result<Vec<u8>, Box<dyn Error>>
where Self: serde::Serialize + Fetchable {
// Ron
self.serialize_ron()
// Json
// self.serialize_json()
// Bin
// self.serialize_bin()
}
}
fn main() -> std::result::Result<(), Box<dyn Error>> {
// Example directory
let mut path = env::current_dir()?;
// adding file name
path.push("config.ron");
// fetch or default will either open file from disk and deserialize
// or return the default for Config and a boolean indicating the
// config is default.
let config: (Config, bool) = Config::fetch_or_default(&path)?;
if config.1 {
config.0.save(&path);
}
let config = config.0;
println!("Config: {}, {}", config.setting1, config.setting2);
Ok(())
}
Dependencies
~1.6–2.6MB
~56K SLoC