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use bencher::{benchmark_group, benchmark_main};
use std::io::{Cursor, Write};
use bencher::Bencher;
use zip::{ZipArchive, ZipWriter};
const FILE_COUNT: usize = 15_000;
const FILE_SIZE: usize = 1024;
fn generate_random_archive(count_files: usize, file_size: usize) -> Vec<u8> {
let data = Vec::new();
let mut writer = ZipWriter::new(Cursor::new(data));
let options =
zip::write::FileOptions::default().compression_method(zip::CompressionMethod::Stored);
let bytes = vec![0u8; file_size];
for i in 0..count_files {
let name = format!("file_deadbeefdeadbeefdeadbeefdeadbeefdeadbeefdeadbeef_{i}.dat");
writer.start_file(name, options).unwrap();
writer.write_all(&bytes).unwrap();
}
writer.finish().unwrap().into_inner()
}
fn read_metadata(bench: &mut Bencher) {
let bytes = generate_random_archive(FILE_COUNT, FILE_SIZE);
bench.iter(|| {
let archive = ZipArchive::new(Cursor::new(bytes.as_slice())).unwrap();
archive.len()
});
}
benchmark_group!(benches, read_metadata);
benchmark_main!(benches);
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