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use std::env;
use std::fs;
use std::time::Instant;
fn main() {
let args = env::args().collect::<Vec<_>>();
if args.len() == 1 {
println!("Usage: {} [list of files]", args[0]);
panic!();
}
let f = &args[1];
let mut crc = 0;
let content = fs::read(f).expect("can't read file");
let sz = content.len();
let size_mb = sz as f64 / 1024.0 / 1024.0;
println!("CRC for {:.2} MB file", size_mb);
let start = Instant::now();
crc = crc64::crc64(crc, content.as_slice());
let elapsed = start.elapsed();
let total_time_seconds = elapsed.as_secs();
let speed = size_mb / total_time_seconds as f64;
println!("{:x} {}", crc, f);
println!("{} seconds at {:.2} MB/s", total_time_seconds, speed);
}
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