1 use flate2::read::ZlibEncoder;
2 use flate2::Compression;
3 use std::fs::File;
4 use std::io::prelude::*;
5 
6 // Open file and debug print the compressed contents
main()7 fn main() {
8     println!("{:?}", open_hello_world().unwrap());
9 }
10 
11 // Opens sample file, compresses the contents and returns a Vector or error
12 // File implements Read
open_hello_world() -> std::io::Result<Vec<u8>>13 fn open_hello_world() -> std::io::Result<Vec<u8>> {
14     let f = File::open("examples/hello_world.txt")?;
15     let mut z = ZlibEncoder::new(f, Compression::fast());
16     let mut result = Vec::new();
17     z.read_to_end(&mut result)?;
18     Ok(result)
19 }
20