coreutils/pwd/pwd.rs

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#![crate_id(name="pwd", vers="1.0.0", author="Heather Cynede")]
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/*
* This file is part of the uutils coreutils package.
*
* (c) Derek Chiang <derekchiang93@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
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#![feature(macro_rules)]
extern crate getopts;
extern crate libc;
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use std::os;
use std::io::print;
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#[path = "../common/util.rs"]
mod util;
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static NAME: &'static str = "pwd";
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static VERSION: &'static str = "1.0.0";
fn main() {
let args = os::args();
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let program = args.get(0).clone();
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let opts = ~[
getopts::optflag("", "help", "display this help and exit"),
getopts::optflag("", "version", "output version information and exit"),
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];
let matches = match getopts::getopts(args.tail(), opts) {
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Ok(m) => m,
Err(f) => {
crash!(1, "Invalid options\n{}", f.to_err_msg())
}
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};
if matches.opt_present("help") {
println!("pwd {}", VERSION);
println!("");
println!("Usage:");
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println!(" {0:s} [OPTION] NAME...", program);
println!("");
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print(getopts::usage("Print the full filename of the current working directory.", opts).as_slice());
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} else if matches.opt_present("version") {
return println!("pwd version: {}", VERSION);
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} else {
let cwd = std::os::getcwd();
println!("{}", cwd.display());
}
}