Struct async_process::ChildStdout

pub struct ChildStdout(_);

A handle to a child process’s standard output (stdout).

When a ChildStdout is dropped, the underlying handle gets closed.

Implementations

impl ChildStdout

pub async fn into_stdio(self) -> Result<Stdio>

Convert async_process::ChildStdout into std::process::Stdio.

You can use it to associate to the next process.

Examples

use async_process::Command;
use std::process::Stdio;
use std::io::Read;
use futures_lite::AsyncReadExt;

let mut ls_child = Command::new("ls").stdout(Stdio::piped()).spawn()?;
let stdio:Stdio = ls_child.stdout.take().unwrap().into_stdio().await?;

let mut echo_child = Command::new("echo").stdin(stdio).stdout(Stdio::piped()).spawn()?;
let mut buf = vec![];
echo_child.stdout.take().unwrap().read(&mut buf).await;

Trait Implementations

impl AsFd for ChildStdout

fn as_fd(&self) -> BorrowedFd<'_>

Borrows the file descriptor.

impl AsRawFd for ChildStdout

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl AsyncRead for ChildStdout

fn poll_read(
    self: Pin<&mut Self>,
    cx: &mut Context<'_>,
    buf: &mut [u8]
) -> Poll<Result<usize>>

Attempt to read from the AsyncRead into buf.

fn poll_read_vectored(
    self: Pin<&mut Self>,
    cx: &mut Context<'_>,
    bufs: &mut [IoSliceMut<'_>]
) -> Poll<Result<usize, Error>>

Attempt to read from the AsyncRead into bufs using vectored IO operations.

impl Debug for ChildStdout

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl TryFrom<ChildStdout> for OwnedFd

type Error = Error

The type returned in the event of a conversion error.

fn try_from(value: ChildStdout) -> Result<Self, Self::Error>

Performs the conversion.