A gzip streaming encoder

This structure implements a Read interface. When read from, it reads uncompressed data from the underlying Read and provides the compressed data.

Examples

use std::io::prelude::*;
use std::io;
use flate2::Compression;
use flate2::read::GzEncoder;

// Return a vector containing the GZ compressed version of hello world

fn gzencode_hello_world() -> io::Result<Vec<u8>> {
    let mut ret_vec = Vec::new();
    let bytestring = b"hello world";
    let mut gz = GzEncoder::new(&bytestring[..], Compression::fast());
    gz.read_to_end(&mut ret_vec)?;
    Ok(ret_vec)
}