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use crate::io;
use crate::io::{IoSlice, IoSliceMut};
use crate::sys::hermit::abi;
pub struct Stdin;
pub struct Stdout;
pub struct Stderr;
impl Stdin {
pub fn new() -> io::Result<Stdin> {
Ok(Stdin)
}
pub fn read(&self, data: &mut [u8]) -> io::Result<usize> {
self.read_vectored(&mut [IoSliceMut::new(data)])
}
pub fn read_vectored(&self, _data: &mut [IoSliceMut<'_>]) -> io::Result<usize> {
//ManuallyDrop::new(unsafe { WasiFd::from_raw(libc::STDIN_FILENO as u32) })
// .read(data)
Ok(0)
}
}
impl Stdout {
pub fn new() -> io::Result<Stdout> {
Ok(Stdout)
}
pub fn write(&self, data: &[u8]) -> io::Result<usize> {
let len;
unsafe { len = abi::write(1, data.as_ptr() as *const u8, data.len()) }
if len < 0 {
Err(io::Error::new(io::ErrorKind::Other, "Stdout is not able to print"))
} else {
Ok(len as usize)
}
}
pub fn write_vectored(&self, data: &[IoSlice<'_>]) -> io::Result<usize> {
let len;
unsafe { len = abi::write(1, data.as_ptr() as *const u8, data.len()) }
if len < 0 {
Err(io::Error::new(io::ErrorKind::Other, "Stdout is not able to print"))
} else {
Ok(len as usize)
}
}
pub fn flush(&self) -> io::Result<()> {
Ok(())
}
}
impl Stderr {
pub fn new() -> io::Result<Stderr> {
Ok(Stderr)
}
pub fn write(&self, data: &[u8]) -> io::Result<usize> {
let len;
unsafe { len = abi::write(2, data.as_ptr() as *const u8, data.len()) }
if len < 0 {
Err(io::Error::new(io::ErrorKind::Other, "Stderr is not able to print"))
} else {
Ok(len as usize)
}
}
pub fn write_vectored(&self, data: &[IoSlice<'_>]) -> io::Result<usize> {
let len;
unsafe { len = abi::write(2, data.as_ptr() as *const u8, data.len()) }
if len < 0 {
Err(io::Error::new(io::ErrorKind::Other, "Stderr is not able to print"))
} else {
Ok(len as usize)
}
}
pub fn flush(&self) -> io::Result<()> {
Ok(())
}
}
impl io::Write for Stderr {
fn write(&mut self, data: &[u8]) -> io::Result<usize> {
(&*self).write(data)
}
fn flush(&mut self) -> io::Result<()> {
(&*self).flush()
}
}
pub const STDIN_BUF_SIZE: usize = 0;
pub fn is_ebadf(_err: &io::Error) -> bool {
true
}
pub fn panic_output() -> Option<impl io::Write> {
Stderr::new().ok()
}
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