std::pipe

Struct PipeWriter

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pub struct PipeWriter(/* private fields */);
🔬This is a nightly-only experimental API. (anonymous_pipe #127154)
Expand description

Write end of the anonymous pipe.

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impl PipeWriter

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pub fn try_clone(&self) -> Result<Self>

🔬This is a nightly-only experimental API. (anonymous_pipe #127154)

Create a new PipeWriter instance that shares the same underlying file description.

§Examples
#![feature(anonymous_pipe)]
let (mut reader, writer) = std::pipe::pipe()?;

// Spawn a process that writes to stdout and stderr.
let mut peer = Command::new("bash")
    .args([
        "-c",
        "echo -n foo\n\
         echo -n bar >&2"
    ])
    .stdout(writer.try_clone()?)
    .stderr(writer)
    .spawn()?;

// Read and check the result.
let mut msg = String::new();
reader.read_to_string(&mut msg)?;
assert_eq!(&msg, "foobar");

peer.wait()?;

Trait Implementations§

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impl AsFd for PipeWriter

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

Borrows the file descriptor. Read more
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impl AsRawFd for PipeWriter

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fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor. Read more
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impl Debug for PipeWriter

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

Formats the value using the given formatter. Read more
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impl From<OwnedFd> for PipeWriter

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fn from(owned_fd: OwnedFd) -> Self

Converts to this type from the input type.
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impl From<PipeWriter> for OwnedFd

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fn from(pipe: PipeWriter) -> Self

Converts to this type from the input type.
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impl From<PipeWriter> for Stdio

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fn from(pipe: PipeWriter) -> Self

Converts to this type from the input type.
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impl FromRawFd for PipeWriter

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unsafe fn from_raw_fd(raw_fd: RawFd) -> Self

Constructs a new instance of Self from the given raw file descriptor. Read more
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impl IntoRawFd for PipeWriter

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fn into_raw_fd(self) -> RawFd

Consumes this object, returning the raw underlying file descriptor. Read more
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impl Write for &PipeWriter

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fn write(&mut self, buf: &[u8]) -> Result<usize>

Writes a buffer into this writer, returning how many bytes were written. Read more
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fn flush(&mut self) -> Result<()>

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination. Read more
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fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize>

Like write, except that it writes from a slice of buffers. Read more
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fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector #69941)
Determines if this Writer has an efficient write_vectored implementation. Read more
1.0.0 · Source§

fn write_all(&mut self, buf: &[u8]) -> Result<()>

Attempts to write an entire buffer into this writer. Read more
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fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>

🔬This is a nightly-only experimental API. (write_all_vectored #70436)
Attempts to write multiple buffers into this writer. Read more
1.0.0 · Source§

fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()>

Writes a formatted string into this writer, returning any error encountered. Read more
1.0.0 · Source§

fn by_ref(&mut self) -> &mut Self
where Self: Sized,

Creates a “by reference” adapter for this instance of Write. Read more
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impl Write for PipeWriter

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fn write(&mut self, buf: &[u8]) -> Result<usize>

Writes a buffer into this writer, returning how many bytes were written. Read more
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fn flush(&mut self) -> Result<()>

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination. Read more
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fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize>

Like write, except that it writes from a slice of buffers. Read more
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fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector #69941)
Determines if this Writer has an efficient write_vectored implementation. Read more
1.0.0 · Source§

fn write_all(&mut self, buf: &[u8]) -> Result<()>

Attempts to write an entire buffer into this writer. Read more
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fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<()>

🔬This is a nightly-only experimental API. (write_all_vectored #70436)
Attempts to write multiple buffers into this writer. Read more
1.0.0 · Source§

fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()>

Writes a formatted string into this writer, returning any error encountered. Read more
1.0.0 · Source§

fn by_ref(&mut self) -> &mut Self
where Self: Sized,

Creates a “by reference” adapter for this instance of Write. Read more

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.