broot 1.2.8

A new file manager
Documentation 
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use {
    fnv::FnvHashMap,
    std::sync::Mutex,
};

pub fn supported() -> bool {
    true
}

pub fn user_name(uid: u32) -> String {
    lazy_static! {
        static ref USERS_CACHE_MUTEX: Mutex<FnvHashMap<u32, String>> =
            Mutex::new(FnvHashMap::default());
    }
    let mut users_cache = USERS_CACHE_MUTEX.lock().unwrap();
    let name = users_cache
        .entry(uid)
        .or_insert_with(|| {
            users::get_user_by_uid(uid).map_or_else(
                || "????".to_string(),
                |u| u.name().to_string_lossy().to_string(),
            )
        });
    (*name).to_string()
}

pub fn group_name(gid: u32) -> String {
    lazy_static! {
        static ref USERS_CACHE_MUTEX: Mutex<FnvHashMap<u32, String>> = Mutex::new(FnvHashMap::default());
    }
    let mut groups_cache = USERS_CACHE_MUTEX.lock().unwrap();
    let name = groups_cache
        .entry(gid)
        .or_insert_with(|| {
            users::get_group_by_gid(gid).map_or_else(
                || "????".to_string(),
                |u| u.name().to_string_lossy().to_string(),
            )
        });
    (*name).to_string()
}