Rust zstd-rs compression with dictionary

zstd-dict.rs

// dict
let mut dict_file =
    std::fs::File::open("dictionaryFile").unwrap();
let mut dict = Vec::new();
dict_file.read_to_end(&mut dict).unwrap();

// compress
let mut enc_buf = [0; 1_000_000];
let encoder_dict = zstd::dict::EncoderDictionary::copy(&dict, 0);
let mut compressor =
    zstd::bulk::Compressor::with_prepared_dictionary(&encoder_dict).unwrap();

// decompress
let mut dec_buf = [0; 1_000_000];
let decoder_dict = zstd::dict::DecoderDictionary::copy(&dict);
let mut decompressor =
    zstd::bulk::Decompressor::with_prepared_dictionary(&decoder_dict).unwrap();

for _i in 0..100 {
    let enc_bytes_written = compressor
        .compress_to_buffer(&input_bytes, &mut enc_buf)
        .unwrap();

    let dec_bytes_written = decompressor
        .decompress_to_buffer(&enc_buf[..enc_bytes_written], &mut dec_buf)
        .unwrap();
    println!("enc: {enc_bytes_written}, dec: {dec_bytes_written}");
    assert_eq!(&dec_buf[..dec_bytes_written], input_bytes.as_slice());
}