RGBCube/uutils-coreutils
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Update tty's options to conform to GNU version.

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This commit is contained in:
Joseph Crail 2015-05-03 17:11:42 -04:00
parent e002caedc3
commit 6de22f91a9
1 changed files with 41 additions and 35 deletions
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76
src/tty/tty.rs
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@ -15,8 +15,9 @@
extern crate getopts;
extern crate libc;
use getopts::{getopts, optflag};
use std::ffi::CStr;
use getopts::{optflag,getopts};
use std::io::Write;
#[path = "../common/util.rs"]
#[macro_use]
@ -28,51 +29,56 @@ extern {
}
static NAME: &'static str = "tty";
static VERSION: &'static str = "1.0.0";
pub fn uumain(args: Vec<String>) -> i32 {
let options = [
optflag("s", "silent", "print nothing, only return an exit status")
optflag("s", "silent", "print nothing, only return an exit status"),
optflag("h", "help", "display this help and exit"),
optflag("V", "version", "output version information and exit")
];
let silent = match getopts(&args[1..], &options) {
Ok(m) => {
m.opt_present("s")
},
let matches = match getopts(&args[1..], &options) {
Ok(m) => m,
Err(f) => {
println!("{}", f);
usage();
return 2;
crash!(2, "{}", f)
}
};
let tty = unsafe {
let ptr = ttyname(libc::STDIN_FILENO);
if !ptr.is_null() {
String::from_utf8_lossy(CStr::from_ptr(ptr).to_bytes()).to_string()
} else {
"".to_string()
}
};
if matches.opt_present("help") {
let usage = getopts::usage("Print the file name of the terminal connected to standard input.", &options);
if !silent {
if !tty.chars().all(|c| c.is_whitespace()) {
println!("{}", tty);
} else {
println!("not a tty");
println!("Usage: {} [OPTION]...\n{}", NAME, usage);
} else if matches.opt_present("version") {
println!("{} {}", NAME, VERSION);
} else {
let silent = matches.opt_present("s");
let tty = unsafe {
let ptr = ttyname(libc::STDIN_FILENO);
if !ptr.is_null() {
String::from_utf8_lossy(CStr::from_ptr(ptr).to_bytes()).to_string()
} else {
"".to_string()
}
};
if !silent {
if !tty.chars().all(|c| c.is_whitespace()) {
println!("{}", tty);
} else {
println!("not a tty");
}
}
return unsafe {
if isatty(libc::STDIN_FILENO) == 1 {
libc::EXIT_SUCCESS
} else {
libc::EXIT_FAILURE
}
};
}
let exit_code = unsafe {
if isatty(libc::STDIN_FILENO) == 1 {
libc::EXIT_SUCCESS
} else {
libc::EXIT_FAILURE
}
};
exit_code
}
fn usage() {
println!("usage: {} [-s]", NAME);
0
}