coreutils/yes/yes.rs
2013-10-22 14:22:10 +02:00

61 lines
1.5 KiB
Rust

#[link(name="yes", vers="1.0.0", author="Seldaek")];
/*
* This file is part of the uutils coreutils package.
*
* (c) Jordi Boggiano <j.boggiano@seld.be>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
/* last synced with: yes (GNU coreutils) 8.13 */
extern mod extra;
use std::os;
use std::io::stderr;
use extra::getopts::groups;
fn main() {
let args = os::args();
let program = args[0].clone();
let opts = ~[
groups::optflag("h", "help", "display this help and exit"),
groups::optflag("V", "version", "output version information and exit"),
];
let matches = match groups::getopts(args.tail(), opts) {
Ok(m) => m,
Err(f) => {
stderr().write_line("Invalid options");
stderr().write_line(f.to_err_msg());
os::set_exit_status(1);
return
}
};
if matches.opt_present("help") {
println("yes 1.0.0");
println("");
println("Usage:");
println(format!(" {0:s} [STRING]... [OPTION]...", program));
println("");
print(groups::usage("Repeatedly output a line with all specified STRING(s), or 'y'.", opts));
return;
}
if matches.opt_present("version") {
println("yes 1.0.0");
return;
}
let mut string = ~"y";
if !matches.free.is_empty() {
string = matches.free.connect(" ");
}
exec(string);
}
pub fn exec(string: ~str) {
loop {
println(string);
}
}