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use std::path::Path;
use anyhow::Result;
use kdam::tqdm;
use walkdir::WalkDir;
async fn copy(from: String, to: String) -> std::io::Result<()> {
let from_path = std::path::Path::new(&from);
let to_path = std::path::Path::new(&to);
if from_path.is_dir() {
std::fs::create_dir_all(to)?;
} else if from_path.is_file() {
std::fs::create_dir_all(to_path.parent().unwrap())?;
std::fs::copy(from, to)?;
}
Ok(())
}
#[tokio::main]
async fn main() -> Result<()> {
let args: Vec<String> = std::env::args().collect();
if args.len() != 3 {
println!("{} <source> <destination>", args.first().unwrap());
return Ok(());
}
let source = Path::new(&args[1]);
let destination = Path::new(&args[2]);
const MAX: usize = 100;
let mut tasks = Vec::new();
let count = WalkDir::new(source)
.into_iter()
.filter_map(|e| e.ok())
.filter(|e| e.file_type().is_file()).count();
for entry in tqdm!(WalkDir::new(source)
.into_iter()
.filter_map(|e| e.ok())
.filter(|e| e.file_type().is_file()), total = count)
{
let from = entry.path().to_str().unwrap().to_string();
let rel = entry.path().strip_prefix(source)?;
let to = {
let mut target = destination.to_path_buf();
target.push(rel);
target.to_str().unwrap().to_string()
};
tasks.push(tokio::spawn(copy(from, to)));
if tasks.len() > MAX {
for task in tasks {
task.await.unwrap()?
}
tasks = Vec::new();
}
}
Ok(())
}
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