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use clap::Parser;
use std::path::Path;
use anyhow::Result;
use walkdir::WalkDir;
#[derive(Parser, Debug)]
#[command(version, about, author)]
struct Args {
source: String,
destination: String,
#[arg(short, long, default_value_t = 8)]
jobs: usize,
}
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 !to_path.exists() {
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(())
}
async fn run(args: Args) -> Result<()> {
let source = Path::new(&args.source);
let destination = Path::new(&args.destination);
let mut tasks: Vec<tokio::task::JoinHandle<std::prelude::v1::Result<(), std::io::Error>>> =
Vec::new();
for (count, entry) in WalkDir::new(source).into_iter().filter_map(|e| e.ok()).enumerate() {
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)));
print!("copied {count} files\r");
}
println!("\nsyncing filesystem");
for task in tasks {
match task.await {
Ok(result) => {
if let Err(e) = result {
eprintln!("Error: {:?}", e);
}
}
Err(e) => eprintln!("Runtime Error: {:?}", e)
}
}
Ok(())
}
fn main() -> Result<()> {
let args = Args::parse();
let runtime = tokio::runtime::Builder::new_multi_thread()
.worker_threads(args.jobs)
.enable_all()
.build()
.unwrap();
runtime.block_on(run(args))
}
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