Struct futures_util::io::LineWriter

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pub struct LineWriter<W: AsyncWrite> { /* private fields */ }
Expand description

Wrap a writer, like BufWriter does, but prioritizes buffering lines

This was written based on std::io::LineWriter which goes into further details explaining the code.

Buffering is actually done using BufWriter. This class will leverage BufWriter to write on-each-line.

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impl<W: AsyncWrite> LineWriter<W>

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pub fn new(inner: W) -> LineWriter<W>

Create a new LineWriter with default buffer capacity. The default is currently 1KB which was taken from std::io::LineWriter

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pub fn with_capacity(capacity: usize, inner: W) -> LineWriter<W>

Creates a new LineWriter with the specified buffer capacity.

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pub fn buffer(&self) -> &[u8]

Returns a reference to buf_writer’s internally buffered data.

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pub fn get_ref(&self) -> &W

Acquires a reference to the underlying sink or stream that this combinator is pulling from.

Trait Implementations§

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impl<W: AsyncWrite> AsyncWrite for LineWriter<W>

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fn poll_flush(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>

Forward to buf_writer ’s BufWriter::poll_flush()

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fn poll_close(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<()>>

Forward to buf_writer ’s BufWriter::poll_close()

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

Attempt to write bytes from buf into the object. Read more
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fn poll_write_vectored( self: Pin<&mut Self>, cx: &mut Context<'_>, bufs: &[IoSlice<'_>] ) -> Poll<Result<usize>>

Attempt to write bytes from bufs into the object using vectored IO operations. Read more
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impl<W: Debug + AsyncWrite> Debug for LineWriter<W>

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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<'__pin, W: AsyncWrite> Unpin for LineWriter<W>where __Origin<'__pin, W>: Unpin,

Auto Trait Implementations§

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impl<W> RefUnwindSafe for LineWriter<W>where W: RefUnwindSafe,

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impl<W> Send for LineWriter<W>where W: Send,

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impl<W> Sync for LineWriter<W>where W: Sync,

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impl<W> UnwindSafe for LineWriter<W>where W: UnwindSafe,

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<W> AsyncWriteExt for Wwhere W: AsyncWrite + ?Sized,

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fn flush(&mut self) -> Flush<'_, Self> where Self: Unpin,

Creates a future which will entirely flush this AsyncWrite. Read more
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fn close(&mut self) -> Close<'_, Self> where Self: Unpin,

Creates a future which will entirely close this AsyncWrite.
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fn write<'a>(&'a mut self, buf: &'a [u8]) -> Write<'a, Self> where Self: Unpin,

Creates a future which will write bytes from buf into the object. Read more
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fn write_vectored<'a>( &'a mut self, bufs: &'a [IoSlice<'a>] ) -> WriteVectored<'a, Self> where Self: Unpin,

Creates a future which will write bytes from bufs into the object using vectored IO operations. Read more
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fn write_all<'a>(&'a mut self, buf: &'a [u8]) -> WriteAll<'a, Self> where Self: Unpin,

Write data into this object. Read more
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fn into_sink<Item: AsRef<[u8]>>(self) -> IntoSink<Self, Item>where Self: Sized,

Allow using an AsyncWrite as a Sink<Item: AsRef<[u8]>>. Read more
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impl<T> Borrow<T> for Twhere 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 Twhere 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 Twhere 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 Twhere 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 Twhere 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.