1 use flate2::write::DeflateDecoder;
2 use flate2::write::DeflateEncoder;
3 use flate2::Compression;
4 use std::io;
5 use std::io::prelude::*;
6 
7 // Compress a sample string and print it after transformation.
main()8 fn main() {
9     let mut e = DeflateEncoder::new(Vec::new(), Compression::default());
10     e.write_all(b"Hello World").unwrap();
11     let bytes = e.finish().unwrap();
12     println!("{}", decode_reader(bytes).unwrap());
13 }
14 
15 // Uncompresses a Deflate Encoded vector of bytes and returns a string or error
16 // Here Vec<u8> implements Write
decode_reader(bytes: Vec<u8>) -> io::Result<String>17 fn decode_reader(bytes: Vec<u8>) -> io::Result<String> {
18     let mut writer = Vec::new();
19     let mut deflater = DeflateDecoder::new(writer);
20     deflater.write_all(&bytes[..])?;
21     writer = deflater.finish()?;
22     let return_string = String::from_utf8(writer).expect("String parsing error");
23     Ok(return_string)
24 }
25