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extern crate humansize;
extern crate ignore;
extern crate num_cpus;
use std::collections::HashSet;
use std::os::unix::fs::MetadataExt;
use std::sync::mpsc::channel;
use std::thread;
use humansize::{file_size_opts, FileSize};
use ignore::WalkBuilder;
fn main() {
let mut builder = WalkBuilder::new("./");
builder.hidden(false);
builder.parents(false);
builder.ignore(false);
builder.git_global(false);
builder.git_ignore(false);
builder.git_exclude(false);
builder.follow_links(false);
builder.threads(num_cpus::get());
let walker = builder.build_parallel();
let (tx, rx) = channel();
let receiver_thread = thread::spawn(move || {
let mut total = 0;
let mut ids = HashSet::new();
for (unique_id, size) in rx {
if let Some(unique_id) = unique_id {
// Only count this entry if the ID has not been seen
if ids.insert(unique_id) {
total += size;
}
} else {
total += size;
}
}
println!(
"{} ({} bytes)",
total.file_size(file_size_opts::DECIMAL).unwrap(),
total
);
});
walker.run(|| {
let tx = tx.clone();
Box::new(move |result| {
if let Ok(entry) = result {
let metadata = entry.metadata().unwrap();
// If the entry has more than one hard link, generate
// a unique ID consisting of device and inode in order
// not to count this entry twice.
let unique_id = if metadata.is_file() && metadata.nlink() > 1 {
Some((metadata.dev(), metadata.ino()))
} else {
None
};
let size = metadata.len();
tx.send((unique_id, size)).unwrap();
}
return ignore::WalkState::Continue;
})
});
drop(tx);
receiver_thread.join().unwrap();
}
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