TomlConf uses the directories library to locate the appropriate place for application data in a cross-platform way, and populates that location with a default file included at compile-time.
All you need to do is define a struct that implements serde::de::DeserializeOwned (typically by way of #[derive(Deserialize)] for a struct that owns its data) and implement the ConfigData trait for it.
You can then use the constructors on the trait to create, load, and read the data from a file;
If you also derive Serialize, you can even save changes to the data back into the file.
```rust
struct AppConfig { output: String, number: usize, }
impl ConfigData for AppConfig { const DEFAULT: &'static str = includestr!("cfgdefault.toml"); }
fn main() {
let cfg: ConfigFilemsg variable tells the user whether an existing config
// file was found, or whether a new one was created with the
// default values instead.
eprintln!("{}", msg);
config
}
Err(msg) => {
eprintln!("Setup failed: {}", msg);
std::process::exit(1);
}
};
for i in 0..cfg.number {
println!("{}: {}", i, &cfg.output);
}
} ```