1 extern crate flate2; 2 3 use flate2::write::DeflateDecoder; 4 use flate2::write::DeflateEncoder; 5 use flate2::Compression; 6 use std::io; 7 use std::io::prelude::*; 8 9 // Compress a sample string and print it after transformation. main()10fn main() { 11 let mut e = DeflateEncoder::new(Vec::new(), Compression::default()); 12 e.write_all(b"Hello World").unwrap(); 13 let bytes = e.finish().unwrap(); 14 println!("{}", decode_reader(bytes).unwrap()); 15 } 16 17 // Uncompresses a Deflate Encoded vector of bytes and returns a string or error 18 // Here Vec<u8> implements Write decode_reader(bytes: Vec<u8>) -> io::Result<String>19fn decode_reader(bytes: Vec<u8>) -> io::Result<String> { 20 let mut writer = Vec::new(); 21 let mut deflater = DeflateDecoder::new(writer); 22 deflater.write_all(&bytes[..])?; 23 writer = deflater.finish()?; 24 let return_string = String::from_utf8(writer).expect("String parsing error"); 25 Ok(return_string) 26 } 27