pub fn decompress(data: &[u8]) -> Result<Vec<u8>, std::io::Error> {
zstd::decode_all(data)
.map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))
}
pub fn compress(data: &[u8], level: i32) -> Result<Vec<u8>, std::io::Error> {
let encoded = zstd::encode_all(data, level)
.map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))?;
Ok(encoded)
}