100 lines
2.4 KiB
Rust
100 lines
2.4 KiB
Rust
use crate::io::{self, BorrowedCursor, IoSlice, IoSliceMut};
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use crate::mem::ManuallyDrop;
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use crate::os::unix::io::FromRawFd;
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use crate::sys::fd::FileDesc;
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pub struct Stdin(());
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pub struct Stdout(());
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pub struct Stderr(());
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impl Stdin {
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pub const fn new() -> Stdin {
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Stdin(())
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}
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}
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impl io::Read for Stdin {
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fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
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unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDIN_FILENO)).read(buf) }
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}
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fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> io::Result<()> {
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unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDIN_FILENO)).read_buf(buf) }
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}
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fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
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unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDIN_FILENO)).read_vectored(bufs) }
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}
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#[inline]
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fn is_read_vectored(&self) -> bool {
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true
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}
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}
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impl Stdout {
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pub const fn new() -> Stdout {
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Stdout(())
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}
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}
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impl io::Write for Stdout {
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fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
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unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDOUT_FILENO)).write(buf) }
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}
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fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
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unsafe {
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ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDOUT_FILENO)).write_vectored(bufs)
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}
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}
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#[inline]
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fn is_write_vectored(&self) -> bool {
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true
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}
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#[inline]
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fn flush(&mut self) -> io::Result<()> {
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Ok(())
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}
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}
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impl Stderr {
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pub const fn new() -> Stderr {
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Stderr(())
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}
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}
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impl io::Write for Stderr {
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fn write(&mut self, buf: &[u8]) -> io::Result<usize> {
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unsafe { ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDERR_FILENO)).write(buf) }
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}
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fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> {
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unsafe {
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ManuallyDrop::new(FileDesc::from_raw_fd(libc::STDERR_FILENO)).write_vectored(bufs)
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}
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}
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#[inline]
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fn is_write_vectored(&self) -> bool {
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true
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}
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#[inline]
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fn flush(&mut self) -> io::Result<()> {
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Ok(())
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}
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}
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pub fn is_ebadf(err: &io::Error) -> bool {
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err.raw_os_error() == Some(libc::EBADF as i32)
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}
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pub const STDIN_BUF_SIZE: usize = crate::sys_common::io::DEFAULT_BUF_SIZE;
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pub fn panic_output() -> Option<impl io::Write> {
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Some(Stderr::new())
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}
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