coreutils/src/yes/yes.rs
2015-02-22 13:59:57 +01:00

65 lines
1.6 KiB
Rust

#![crate_name = "yes"]
#![feature(collections, old_io, rustc_private)]
/*
* 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 crate getopts;
extern crate libc;
use std::old_io::print;
use std::borrow::IntoCow;
#[path = "../common/util.rs"]
#[macro_use]
mod util;
static NAME: &'static str = "yes";
pub fn uumain(args: Vec<String>) -> i32 {
let program = &args[0];
let opts = [
getopts::optflag("h", "help", "display this help and exit"),
getopts::optflag("V", "version", "output version information and exit"),
];
let matches = match getopts::getopts(args.tail(), &opts) {
Ok(m) => m,
Err(f) => {
crash!(1, "invalid options\n{}", f)
}
};
if matches.opt_present("help") {
println!("yes 1.0.0");
println!("");
println!("Usage:");
println!(" {0} [STRING]... [OPTION]...", program);
println!("");
print(&getopts::usage("Repeatedly output a line with all specified STRING(s), or 'y'.", &opts)[..]);
return 0;
}
if matches.opt_present("version") {
println!("yes 1.0.0");
return 0;
}
let string = if matches.free.is_empty() {
"y".into_cow()
} else {
matches.free.connect(" ").into_cow()
};
exec(&string[..]);
0
}
pub fn exec(string: &str) {
while pipe_println!("{}", string) { }
}