yanix 0.23.0

Yet Another Nix crate: a Unix API helper library (deprecated)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

use std::{
    io::{Error, Result},
    os::wasi::prelude::*,
};

pub unsafe fn isatty(fd: RawFd) -> Result<bool> {
    let res = libc::isatty(fd);
    if res == 1 {
        // isatty() returns 1 if fd is an open file descriptor referring to a terminal...
        Ok(true)
    } else {
        // ... otherwise 0 is returned, and errno is set to indicate the error.
        let errno = Error::last_os_error();
        let raw_errno = errno.raw_os_error().unwrap();
        if raw_errno == libc::ENOTTY {
            Ok(false)
        } else {
            Err(errno)
        }
    }
}