zlibencoder-read.rs

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use flate2::read::ZlibEncoder;

use flate2::Compression;

use std::fs::File;

use std::io::prelude::*;

// Open file and debug print the compressed contents

fn main() {

    println!("{:?}", open_hello_world().unwrap());

// Opens sample file, compresses the contents and returns a Vector or error

// File implements Read

fn open_hello_world() -> std::io::Result<Vec<u8>> {

    let f = File::open("examples/hello_world.txt")?;

    let mut z = ZlibEncoder::new(f, Compression::fast());

    let mut result = Vec::new();

    z.read_to_end(&mut result)?;

    Ok(result)