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use std::env;
use std::path::PathBuf;
pub struct Configuration {
// Default Base Directories, default to XDG dirs but can be
pub output_directory: PathBuf,
}
impl Configuration {
pub fn new() -> Self {
let output_directory = Configuration::directory(
"PAGE_OUTPUT_DIRECTORY",
"XDG_CACHE_HOME",
".cache",
"page"
);
Configuration {
output_directory,
}
}
fn directory(user_override: &str, default_value: &str, home_fallback: &str, path: &str) -> PathBuf {
match env::var(user_override) {
Ok(directory) => PathBuf::from(directory),
Err(_) => match env::var(default_value) {
Ok(directory) => PathBuf::from(directory),
Err(_) => match env::var("HOME") {
Ok(directory) => PathBuf::from(directory).join(home_fallback),
Err(_) => panic!("Could not find required directory, {} or {} should be set and readable.", user_override, default_value),
},
},
}.join(path)
}
}
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