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https://github.com/rust-lang/rust.git
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bd177f3ea3
This renames `std::io::IoVec` to `std::io::IoSlice` and `std::io::IoVecMut` to `std::io::IoSliceMut`, and stabilizes `std::io::IoSlice`, `std::io::IoSliceMut`, `std::io::Read::read_vectored`, and `std::io::Write::write_vectored`. Closes #58452
68 lines
1.7 KiB
Rust
68 lines
1.7 KiB
Rust
use crate::io::{self, IoSlice, IoSliceMut};
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use crate::sys::fd::FileDesc;
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use crate::mem::ManuallyDrop;
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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 fn new() -> io::Result<Stdin> { Ok(Stdin(())) }
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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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ManuallyDrop::new(FileDesc::new(libc::STDIN_FILENO)).read(buf)
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}
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fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
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ManuallyDrop::new(FileDesc::new(libc::STDIN_FILENO)).read_vectored(bufs)
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}
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}
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impl Stdout {
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pub fn new() -> io::Result<Stdout> { Ok(Stdout(())) }
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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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ManuallyDrop::new(FileDesc::new(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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ManuallyDrop::new(FileDesc::new(libc::STDOUT_FILENO)).write_vectored(bufs)
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}
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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 fn new() -> io::Result<Stderr> { Ok(Stderr(())) }
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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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ManuallyDrop::new(FileDesc::new(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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ManuallyDrop::new(FileDesc::new(libc::STDERR_FILENO)).write_vectored(bufs)
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}
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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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Stderr::new().ok()
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}
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