27 lines
839 B
Rust
27 lines
839 B
Rust
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use flate2::write::GzEncoder;
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use flate2::Compression;
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use std::env::args;
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use std::fs::File;
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use std::io::copy;
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use std::io::BufReader;
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use std::time::Instant;
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fn main() {
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if args().len() != 3 {
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eprintln!("Usage: ./compress_file `source` `target`");
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return;
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}
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let mut input = BufReader::new(File::open(args().nth(1).unwrap()).unwrap());
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let output = File::create(args().nth(2).unwrap()).unwrap();
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let mut encoder = GzEncoder::new(output, Compression::default());
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let start = Instant::now();
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copy(&mut input, &mut encoder).unwrap();
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let output = encoder.finish().unwrap();
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println!(
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"Source len: {:?}",
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input.get_ref().metadata().unwrap().len()
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);
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println!("Target len: {:?}", output.metadata().unwrap().len());
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println!("Elapsed: {:?}", start.elapsed());
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}
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