4 fn load_config_file() -> Vec<(String, Option<String>)> {
5 fs::read_to_string("config.txt")
8 .map(|line| if let Some((line, _comment)) = line.split_once('#') { line } else { line })
9 .map(|line| line.trim())
10 .filter(|line| !line.is_empty())
12 if let Some((key, val)) = line.split_once('=') {
13 (key.trim().to_owned(), Some(val.trim().to_owned()))
15 (line.to_owned(), None)
21 pub(crate) fn get_bool(name: &str) -> bool {
22 let values = load_config_file()
24 .filter(|(key, _)| key == name)
27 if values.is_empty() {
30 if values.iter().any(|val| val.is_some()) {
31 eprintln!("Boolean config `{}` has a value", name);
38 pub(crate) fn get_value(name: &str) -> Option<String> {
39 let values = load_config_file()
41 .filter(|(key, _)| key == name)
44 if values.is_empty() {
46 } else if values.len() == 1 {
47 if values[0].is_none() {
48 eprintln!("Config `{}` missing value", name);
51 values.into_iter().next().unwrap()
53 eprintln!("Config `{}` given multiple values: {:?}", name, values);