1 #![deny(unsafe_op_in_unsafe_fn)]
4 use crate::io::{self, IoSlice, IoSliceMut};
5 use crate::mem::ManuallyDrop;
7 use crate::os::wasi::io::{AsRawFd, FromRawFd};
14 pub const fn new() -> Stdin {
19 impl AsRawFd for Stdin {
21 fn as_raw_fd(&self) -> raw::c_int {
26 impl io::Read for Stdin {
27 fn read(&mut self, data: &mut [u8]) -> io::Result<usize> {
28 self.read_vectored(&mut [IoSliceMut::new(data)])
31 fn read_vectored(&mut self, data: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
32 ManuallyDrop::new(unsafe { WasiFd::from_raw_fd(self.as_raw_fd()) }).read(data)
36 fn is_read_vectored(&self) -> bool {
42 pub const fn new() -> Stdout {
47 impl AsRawFd for Stdout {
49 fn as_raw_fd(&self) -> raw::c_int {
54 impl io::Write for Stdout {
55 fn write(&mut self, data: &[u8]) -> io::Result<usize> {
56 self.write_vectored(&[IoSlice::new(data)])
59 fn write_vectored(&mut self, data: &[IoSlice<'_>]) -> io::Result<usize> {
60 ManuallyDrop::new(unsafe { WasiFd::from_raw_fd(self.as_raw_fd()) }).write(data)
64 fn is_write_vectored(&self) -> bool {
67 fn flush(&mut self) -> io::Result<()> {
73 pub const fn new() -> Stderr {
78 impl AsRawFd for Stderr {
80 fn as_raw_fd(&self) -> raw::c_int {
85 impl io::Write for Stderr {
86 fn write(&mut self, data: &[u8]) -> io::Result<usize> {
87 self.write_vectored(&[IoSlice::new(data)])
90 fn write_vectored(&mut self, data: &[IoSlice<'_>]) -> io::Result<usize> {
91 ManuallyDrop::new(unsafe { WasiFd::from_raw_fd(self.as_raw_fd()) }).write(data)
95 fn is_write_vectored(&self) -> bool {
99 fn flush(&mut self) -> io::Result<()> {
104 pub const STDIN_BUF_SIZE: usize = crate::sys_common::io::DEFAULT_BUF_SIZE;
106 pub fn is_ebadf(err: &io::Error) -> bool {
107 err.raw_os_error() == Some(wasi::ERRNO_BADF.raw().into())
110 pub fn panic_output() -> Option<impl io::Write> {