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pub mod general;
pub mod keymap;
pub mod mimetype;
pub mod option;
pub mod preview;
pub mod theme;
pub use self::general::AppConfig;
pub use self::keymap::*;
pub use self::mimetype::*;
pub use self::preview::*;
pub use self::theme::*;
use serde::de::DeserializeOwned;
use std::fs;
use std::path::{Path, PathBuf};
use crate::CONFIG_HIERARCHY;
pub trait TomlConfigFile {
fn get_config(file_name: &str) -> Self;
}
// searches a list of folders for a given file in order of preference
pub fn search_directories<P>(filename: &str, directories: &[P]) -> Option<PathBuf>
where
P: AsRef<Path>,
{
for path in directories.iter() {
let filepath = path.as_ref().join(filename);
if filepath.exists() {
return Some(filepath);
}
}
None
}
// parses a config file into its appropriate format
fn parse_to_config_file<T, S>(filename: &str) -> Option<S>
where
T: DeserializeOwned,
S: From<T>,
{
let file_path = search_directories(filename, &CONFIG_HIERARCHY)?;
let file_contents = match fs::read_to_string(&file_path) {
Ok(content) => content,
Err(e) => {
eprintln!("Error reading {} file: {}", filename, e);
return None;
}
};
let config = match toml::from_str::<T>(&file_contents) {
Ok(config) => config,
Err(e) => {
eprintln!("Error parsing {} file: {}", filename, e);
return None;
}
};
Some(S::from(config))
}
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