How to use read_line with bufread::MultiGzDecoder?

[Crispy13]

use std::io::prelude::*;
use std::io;
use flate2::bufread::MultiGzDecoder;
use std::io::BufReader;
use std::fs::File;

// Uncompresses a Gz Encoded vector of bytes and returns a string or error
// Here &[u8] implements BufRead

fn decode_reader(bytes: Vec<u8>) -> io::Result<String> {
   let mut gz = MultiGzDecoder::new(
      BufReader::new(File::open("some.gz").unwrap());
   );
   let mut gz = BufReader::new(gz); // << Is this proper way?
   // ...
   gz.read_until(...);
   gz.read_line(...);

   todo!()
}

Is just making a new BufReader on bufread::MultiGzDecoder enough?

[jongiddy]

Yes, this is the correct way. The first BufReader wraps the input data read from the file, allowing bufread::GzDecoder to call the BufRead methods on the compressed data. The second BufReader wraps the output data, allowing you to call the BufRead methods on the decompressed data.