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// Copyright 2022-2024 Gabriel Bjørnager Jensen.
use crate::{Config, Error, Result};
use configparser::ini::Ini;
use std::env::args;
use std::path::PathBuf;
impl Config {
pub fn load() -> Result<Self> {
let path = {
let mut args = args().skip(0x1);
let Some(path) = args.next() else { return Err(Error::MissingConfig) };
if let Some(arg) = args.next() { return Err(Error::IllegalArgument { arg }) };
PathBuf::from(path)
};
let mut config = Ini::new();
config
.load(path)
.map_err(|e| Error::ConfigError { message: e })?;
macro_rules! get_field {
($section:ident.$key:ident) => {{
const FIELD: &str = concat!(stringify!($section), ".", stringify!($key));
if let Some(value) = config.get(stringify!($section), stringify!($key)) {
value
.parse()
.map_err(|e| Error::IllegalFieldValue { field: FIELD, value, source: Box::new(e) })
} else {
Err(Error::MissingField { field: FIELD })
}
}};
}
Ok(Self {
name: get_field!(server.name)?,
port: get_field!(server.port)?,
max_player_count: get_field!(server.max_player_count)?,
})
}
}
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