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#[cfg(target_os = "hermit")]
use hermit_abi::{EBADF, STDERR_FILENO, STDIN_FILENO, STDOUT_FILENO};
#[cfg(target_family = "unix")]
use libc::{EBADF, STDERR_FILENO, STDIN_FILENO, STDOUT_FILENO};
#[cfg(target_family = "unix")]
use crate::io::BorrowedCursor;
use crate::io::{self, IoSlice, IoSliceMut};
use crate::mem::ManuallyDrop;
#[cfg(target_os = "hermit")]
use crate::os::hermit::io::FromRawFd;
#[cfg(target_family = "unix")]
use crate::os::unix::io::FromRawFd;
use crate::sys::fd::FileDesc;
pub struct Stdin(());
pub struct Stdout(());
pub struct Stderr(());
impl Stdin {
pub const fn new() -> Stdin {
Stdin(())
}
}
impl io::Read for Stdin {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(STDIN_FILENO)).read(buf) }
}
#[cfg(not(target_os = "hermit"))]
fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> io::Result<()> {
unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(STDIN_FILENO)).read_buf(buf) }
}
fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(STDIN_FILENO)).read_vectored(bufs) }
}
#[inline]
fn is_read_vectored(&self) -> bool {
true
}
}
impl Stdout {
pub const fn new() -> Stdout {
Stdout(())
}
}
impl io::Write for Stdout {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(STDOUT_FILENO)).write(buf) }
}
fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(STDOUT_FILENO)).write_vectored(bufs) }
}
#[inline]
fn is_write_vectored(&self) -> bool {
true
}
#[inline]
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
impl Stderr {
pub const fn new() -> Stderr {
Stderr(())
}
}
impl io::Write for Stderr {
fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(STDERR_FILENO)).write(buf) }
}
fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(STDERR_FILENO)).write_vectored(bufs) }
}
#[inline]
fn is_write_vectored(&self) -> bool {
true
}
#[inline]
fn flush(&mut self) -> io::Result<()> {
Ok(())
}
}
pub fn is_ebadf(err: &io::Error) -> bool {
err.raw_os_error() == Some(EBADF as i32)
}
pub const STDIN_BUF_SIZE: usize = crate::sys::io::DEFAULT_BUF_SIZE;
pub fn panic_output() -> Option<impl io::Write> {
Some(Stderr::new())
}
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