| use crate::io::{self, IoSlice, IoSliceMut}; |
| use crate::mem::ManuallyDrop; |
| 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> { |
| ManuallyDrop::new(FileDesc::new(libc::STDIN_FILENO)).read(buf) |
| } |
| |
| fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> io::Result<usize> { |
| ManuallyDrop::new(FileDesc::new(libc::STDIN_FILENO)).read_vectored(bufs) |
| } |
| } |
| |
| impl Stdout { |
| pub fn new() -> io::Result<Stdout> { |
| Ok(Stdout(())) |
| } |
| } |
| |
| impl io::Write for Stdout { |
| fn write(&mut self, buf: &[u8]) -> io::Result<usize> { |
| ManuallyDrop::new(FileDesc::new(libc::STDOUT_FILENO)).write(buf) |
| } |
| |
| fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> { |
| ManuallyDrop::new(FileDesc::new(libc::STDOUT_FILENO)).write_vectored(bufs) |
| } |
| |
| 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> { |
| ManuallyDrop::new(FileDesc::new(libc::STDERR_FILENO)).write(buf) |
| } |
| |
| fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> io::Result<usize> { |
| ManuallyDrop::new(FileDesc::new(libc::STDERR_FILENO)).write_vectored(bufs) |
| } |
| |
| 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() |
| } |