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use crate::io;
use crate::sys::fd::FileDesc;
pub struct Stdin(());
pub struct Stdout(());
pub struct Stderr(());
impl Stdin {
pub fn new() -> io::Result<Stdin> {
Ok(Stdin(()))
}
}
impl io::Read for Stdin {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
let fd = FileDesc::new(libc::STDIN_FILENO);
let ret = fd.read(buf);
fd.into_raw(); // do not close this FD
ret
}
}
impl Stdout {
pub fn new() -> io::Result<Stdout> {
Ok(Stdout(()))
}
}
impl io::Write for Stdout {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
let fd = FileDesc::new(libc::STDOUT_FILENO);
let ret = fd.write(buf);
fd.into_raw(); // do not close this FD
ret
}
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
impl Stderr {
pub fn new() -> io::Result<Stderr> {
Ok(Stderr(()))
}
}
impl io::Write for Stderr {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
let fd = FileDesc::new(libc::STDERR_FILENO);
let ret = fd.write(buf);
fd.into_raw(); // do not close this FD
ret
}
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
pub fn is_ebadf(err: &io::Error) -> bool {
err.raw_os_error() == Some(libc::EBADF as i32)
}
pub const STDIN_BUF_SIZE: usize = crate::sys_common::io::DEFAULT_BUF_SIZE;
pub fn panic_output() -> Option<impl io::Write> {
Stderr::new().ok()
}
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