use std::io::{Read, Write};
use flate2::Compression;
use flate2::read::GzDecoder;
use flate2::write::GzEncoder;
use error::Result;
pub fn compress(src: &[u8]) -> Result<Vec<u8>> {
let mut e = GzEncoder::new(Vec::new(), Compression::Default);
try!(e.write(src));
let compressed_bytes = try!(e.finish());
Ok((compressed_bytes))
}
pub fn uncompress<T: Read>(src: T) -> Result<Vec<u8>> {
let mut d = try!(GzDecoder::new(src));
let mut buffer: Vec<u8> = Vec::new();
match d.read_to_end(&mut buffer) {
Err(err) => Err(From::from(err)),
Ok(_) => Ok(buffer)
}
}
#[test]
fn test_uncompress() {
use std::io::Cursor;
let msg: Vec<u8> = vec!(31, 139, 8, 0, 192, 248, 79, 85, 2, 255, 43, 73, 45, 46, 1, 0, 12, 126, 127, 216, 4, 0, 0, 0);
let uncomp_msg = String::from_utf8(uncompress(Cursor::new(msg)).unwrap()).unwrap();
assert_eq!(&uncomp_msg[..], "test");
}
#[test]
#[should_panic]
fn test_uncompress_panic() {
use std::io::Cursor;
let msg: Vec<u8> = vec!(12, 42, 84, 104, 105, 115, 32, 105, 115, 32, 116, 101, 115, 116);
let uncomp_msg = String::from_utf8(uncompress(Cursor::new(msg)).unwrap()).unwrap();
assert_eq!(&uncomp_msg[..], "This is test");
}