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use crate::file::convert_systimespec;
use fs_set_times::SetTimes;
use io_lifetimes::AsFilelike;
use is_terminal::IsTerminal;
use std::any::Any;
use std::convert::TryInto;
use std::fs::File;
use std::io;
use std::io::{Read, Write};
use system_interface::io::ReadReady;
#[cfg(windows)]
use io_extras::os::windows::{AsRawHandleOrSocket, RawHandleOrSocket};
#[cfg(unix)]
use io_lifetimes::{AsFd, BorrowedFd};
#[cfg(windows)]
use io_lifetimes::{AsHandle, BorrowedHandle};
use wasi_common::{
file::{FdFlags, FileType, WasiFile},
Error, ErrorExt,
};
pub struct Stdin(std::io::Stdin);
pub fn stdin() -> Stdin {
Stdin(std::io::stdin())
}
#[async_trait::async_trait]
impl WasiFile for Stdin {
fn as_any(&self) -> &dyn Any {
self
}
#[cfg(unix)]
fn pollable(&self) -> Option<rustix::fd::BorrowedFd> {
Some(self.0.as_fd())
}
#[cfg(windows)]
fn pollable(&self) -> Option<io_extras::os::windows::RawHandleOrSocket> {
Some(self.0.as_raw_handle_or_socket())
}
async fn get_filetype(&mut self) -> Result<FileType, Error> {
if self.isatty() {
Ok(FileType::CharacterDevice)
} else {
Ok(FileType::Unknown)
}
}
async fn read_vectored<'a>(&mut self, bufs: &mut [io::IoSliceMut<'a>]) -> Result<u64, Error> {
let n = (&*self.0.as_filelike_view::<File>()).read_vectored(bufs)?;
Ok(n.try_into().map_err(|_| Error::range())?)
}
async fn read_vectored_at<'a>(
&mut self,
_bufs: &mut [io::IoSliceMut<'a>],
_offset: u64,
) -> Result<u64, Error> {
Err(Error::seek_pipe())
}
async fn seek(&mut self, _pos: std::io::SeekFrom) -> Result<u64, Error> {
Err(Error::seek_pipe())
}
async fn peek(&mut self, _buf: &mut [u8]) -> Result<u64, Error> {
Err(Error::seek_pipe())
}
async fn set_times(
&mut self,
atime: Option<wasi_common::SystemTimeSpec>,
mtime: Option<wasi_common::SystemTimeSpec>,
) -> Result<(), Error> {
self.0
.set_times(convert_systimespec(atime), convert_systimespec(mtime))?;
Ok(())
}
async fn num_ready_bytes(&self) -> Result<u64, Error> {
Ok(self.0.num_ready_bytes()?)
}
fn isatty(&mut self) -> bool {
self.0.is_terminal()
}
}
#[cfg(windows)]
impl AsHandle for Stdin {
fn as_handle(&self) -> BorrowedHandle<'_> {
self.0.as_handle()
}
}
#[cfg(windows)]
impl AsRawHandleOrSocket for Stdin {
#[inline]
fn as_raw_handle_or_socket(&self) -> RawHandleOrSocket {
self.0.as_raw_handle_or_socket()
}
}
#[cfg(unix)]
impl AsFd for Stdin {
fn as_fd(&self) -> BorrowedFd<'_> {
self.0.as_fd()
}
}
macro_rules! wasi_file_write_impl {
($ty:ty, $ident:ident) => {
#[async_trait::async_trait]
impl WasiFile for $ty {
fn as_any(&self) -> &dyn Any {
self
}
#[cfg(unix)]
fn pollable(&self) -> Option<rustix::fd::BorrowedFd> {
Some(self.0.as_fd())
}
#[cfg(windows)]
fn pollable(&self) -> Option<io_extras::os::windows::RawHandleOrSocket> {
Some(self.0.as_raw_handle_or_socket())
}
async fn get_filetype(&mut self) -> Result<FileType, Error> {
if self.isatty() {
Ok(FileType::CharacterDevice)
} else {
Ok(FileType::Unknown)
}
}
async fn get_fdflags(&mut self) -> Result<FdFlags, Error> {
Ok(FdFlags::APPEND)
}
async fn write_vectored<'a>(&mut self, bufs: &[io::IoSlice<'a>]) -> Result<u64, Error> {
let n = (&*self.0.as_filelike_view::<File>()).write_vectored(bufs)?;
Ok(n.try_into().map_err(|c| Error::range().context(c))?)
}
async fn write_vectored_at<'a>(
&mut self,
_bufs: &[io::IoSlice<'a>],
_offset: u64,
) -> Result<u64, Error> {
Err(Error::seek_pipe())
}
async fn seek(&mut self, _pos: std::io::SeekFrom) -> Result<u64, Error> {
Err(Error::seek_pipe())
}
async fn set_times(
&mut self,
atime: Option<wasi_common::SystemTimeSpec>,
mtime: Option<wasi_common::SystemTimeSpec>,
) -> Result<(), Error> {
self.0
.set_times(convert_systimespec(atime), convert_systimespec(mtime))?;
Ok(())
}
fn isatty(&mut self) -> bool {
self.0.is_terminal()
}
}
#[cfg(windows)]
impl AsHandle for $ty {
fn as_handle(&self) -> BorrowedHandle<'_> {
self.0.as_handle()
}
}
#[cfg(unix)]
impl AsFd for $ty {
fn as_fd(&self) -> BorrowedFd<'_> {
self.0.as_fd()
}
}
#[cfg(windows)]
impl AsRawHandleOrSocket for $ty {
#[inline]
fn as_raw_handle_or_socket(&self) -> RawHandleOrSocket {
self.0.as_raw_handle_or_socket()
}
}
};
}
pub struct Stdout(std::io::Stdout);
pub fn stdout() -> Stdout {
Stdout(std::io::stdout())
}
wasi_file_write_impl!(Stdout, Stdout);
pub struct Stderr(std::io::Stderr);
pub fn stderr() -> Stderr {
Stderr(std::io::stderr())
}
wasi_file_write_impl!(Stderr, Stderr);