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|
use std::env;
use std::io::{self, Write};
use std::str::FromStr;
fn main() {
match env::args().nth(1) {
None => {
writeln!(
&mut io::stderr(),
"Invalid option. Usage: `stream [-d|-1..-22]`"
)
.unwrap();
}
Some(ref option) if option == "-d" => decompress(),
Some(ref option) => {
if option.starts_with('-') {
let level = match i32::from_str(&option[1..]) {
Ok(level) => level,
Err(e) => panic!("Error parsing compression level: {}", e),
};
compress(level);
} else {
writeln!(
&mut io::stderr(),
"Invalid option. Usage: `stream [-d|-1..-22]`"
)
.unwrap();
}
}
}
}
fn compress(level: i32) {
zstd::stream::copy_encode(io::stdin(), io::stdout(), level).unwrap();
}
fn decompress() {
zstd::stream::copy_decode(io::stdin(), io::stdout()).unwrap();
}
|
