#![crate_id(name="whoami", version="1.0.0", author="KokaKiwi")] /* * This file is part of the uutils coreutils package. * * (c) Jordi Boggiano * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ /* last synced with: whoami (GNU coreutils) 8.21 */ #![allow(non_camel_case_types)] #![feature(macro_rules)] extern crate getopts; extern crate libc; use std::io::print; use std::os; use std::str; use c_types::{c_passwd, getpwuid}; #[path = "../common/util.rs"] mod util; #[path = "../common/c_types.rs"] mod c_types; extern { pub fn geteuid() -> libc::c_int; } unsafe fn getusername() -> ~str { let passwd: *c_passwd = getpwuid(geteuid()); let pw_name: *libc::c_char = (*passwd).pw_name; let name = str::raw::from_c_str(pw_name); name } static NAME: &'static str = "whoami"; fn main() { let args = os::args(); let program = args[0].as_slice(); 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, "{}", f.to_err_msg()), }; if matches.opt_present("help") { println!("whoami 1.0.0"); println!(""); println!("Usage:"); println!(" {:s}", program); println!(""); print(getopts::usage("print effective userid", opts)); return; } if matches.opt_present("version") { println!("whoami 1.0.0"); return; } exec(); } pub fn exec() { unsafe { let username = getusername(); println!("{:s}", username); } }