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use crate::block_on_dummy_executor;
#[cfg(not(windows))]
use io_lifetimes::AsFd;
#[cfg(windows)]
use io_lifetimes::{AsHandle, BorrowedHandle};
use std::any::Any;
use std::io;
use wasi_common::{
file::{Advice, FdFlags, FileType, Filestat, WasiFile},
Error,
};
pub struct File(wasi_cap_std_sync::file::File);
impl File {
pub(crate) fn from_inner(file: wasi_cap_std_sync::file::File) -> Self {
File(file)
}
pub fn from_cap_std(file: cap_std::fs::File) -> Self {
Self::from_inner(wasi_cap_std_sync::file::File::from_cap_std(file))
}
}
pub struct Stdin(wasi_cap_std_sync::stdio::Stdin);
pub fn stdin() -> Stdin {
Stdin(wasi_cap_std_sync::stdio::stdin())
}
pub struct Stdout(wasi_cap_std_sync::stdio::Stdout);
pub fn stdout() -> Stdout {
Stdout(wasi_cap_std_sync::stdio::stdout())
}
pub struct Stderr(wasi_cap_std_sync::stdio::Stderr);
pub fn stderr() -> Stderr {
Stderr(wasi_cap_std_sync::stdio::stderr())
}
macro_rules! wasi_file_impl {
($ty:ty) => {
#[wiggle::async_trait]
impl WasiFile for $ty {
fn as_any(&self) -> &dyn Any {
self
}
async fn datasync(&self) -> Result<(), Error> {
block_on_dummy_executor(|| self.0.datasync())
}
async fn sync(&self) -> Result<(), Error> {
block_on_dummy_executor(|| self.0.sync())
}
async fn get_filetype(&self) -> Result<FileType, Error> {
block_on_dummy_executor(|| self.0.get_filetype())
}
async fn get_fdflags(&self) -> Result<FdFlags, Error> {
block_on_dummy_executor(|| self.0.get_fdflags())
}
async fn set_fdflags(&mut self, fdflags: FdFlags) -> Result<(), Error> {
block_on_dummy_executor(|| self.0.set_fdflags(fdflags))
}
async fn get_filestat(&self) -> Result<Filestat, Error> {
block_on_dummy_executor(|| self.0.get_filestat())
}
async fn set_filestat_size(&self, size: u64) -> Result<(), Error> {
block_on_dummy_executor(move || self.0.set_filestat_size(size))
}
async fn advise(&self, offset: u64, len: u64, advice: Advice) -> Result<(), Error> {
block_on_dummy_executor(move || self.0.advise(offset, len, advice))
}
async fn allocate(&self, offset: u64, len: u64) -> Result<(), Error> {
block_on_dummy_executor(move || self.0.allocate(offset, len))
}
async fn read_vectored<'a>(
&self,
bufs: &mut [io::IoSliceMut<'a>],
) -> Result<u64, Error> {
block_on_dummy_executor(move || self.0.read_vectored(bufs))
}
async fn read_vectored_at<'a>(
&self,
bufs: &mut [io::IoSliceMut<'a>],
offset: u64,
) -> Result<u64, Error> {
block_on_dummy_executor(move || self.0.read_vectored_at(bufs, offset))
}
async fn write_vectored<'a>(&self, bufs: &[io::IoSlice<'a>]) -> Result<u64, Error> {
block_on_dummy_executor(move || self.0.write_vectored(bufs))
}
async fn write_vectored_at<'a>(
&self,
bufs: &[io::IoSlice<'a>],
offset: u64,
) -> Result<u64, Error> {
block_on_dummy_executor(move || self.0.write_vectored_at(bufs, offset))
}
async fn seek(&self, pos: std::io::SeekFrom) -> Result<u64, Error> {
block_on_dummy_executor(move || self.0.seek(pos))
}
async fn peek(&self, buf: &mut [u8]) -> Result<u64, Error> {
block_on_dummy_executor(move || self.0.peek(buf))
}
async fn set_times(
&self,
atime: Option<wasi_common::SystemTimeSpec>,
mtime: Option<wasi_common::SystemTimeSpec>,
) -> Result<(), Error> {
block_on_dummy_executor(move || self.0.set_times(atime, mtime))
}
async fn num_ready_bytes(&self) -> Result<u64, Error> {
block_on_dummy_executor(|| self.0.num_ready_bytes())
}
#[cfg(not(windows))]
async fn readable(&self) -> Result<(), Error> {
use std::os::unix::io::AsRawFd;
use tokio::io::{unix::AsyncFd, Interest};
let rawfd = self.0.as_fd().as_raw_fd();
match AsyncFd::with_interest(rawfd, Interest::READABLE) {
Ok(asyncfd) => {
let _ = asyncfd.readable().await?;
Ok(())
}
Err(e) if e.kind() == std::io::ErrorKind::PermissionDenied => {
Ok(())
}
Err(e) => Err(e.into()),
}
}
#[cfg(windows)]
async fn readable(&self) -> Result<(), Error> {
use wasi_common::ErrorExt;
Err(Error::badf())
}
#[cfg(not(windows))]
async fn writable(&self) -> Result<(), Error> {
use std::os::unix::io::AsRawFd;
use tokio::io::{unix::AsyncFd, Interest};
let rawfd = self.0.as_fd().as_raw_fd();
match AsyncFd::with_interest(rawfd, Interest::WRITABLE) {
Ok(asyncfd) => {
let _ = asyncfd.writable().await?;
Ok(())
}
Err(e) if e.kind() == std::io::ErrorKind::PermissionDenied => {
Ok(())
}
Err(e) => Err(e.into()),
}
}
#[cfg(windows)]
async fn writable(&self) -> Result<(), Error> {
use wasi_common::ErrorExt;
Err(Error::badf())
}
}
#[cfg(windows)]
impl AsHandle for $ty {
fn as_handle(&self) -> BorrowedHandle<'_> {
self.0.as_handle()
}
}
};
}
wasi_file_impl!(File);
wasi_file_impl!(Stdin);
wasi_file_impl!(Stdout);
wasi_file_impl!(Stderr);
