//! Asynchronous I/O. //! //! This module is the asynchronous version of `std::io`. It defines four //! traits, [`AsyncRead`], [`AsyncWrite`], [`AsyncSeek`], and [`AsyncBufRead`], //! which mirror the `Read`, `Write`, `Seek`, and `BufRead` traits of the //! standard library. However, these traits integrate with the asynchronous //! task system, so that if an I/O object isn't ready for reading (or writing), //! the thread is not blocked, and instead the current task is queued to be //! woken when I/O is ready. //! //! In addition, the [`AsyncReadExt`], [`AsyncWriteExt`], [`AsyncSeekExt`], and //! [`AsyncBufReadExt`] extension traits offer a variety of useful combinators //! for operating with asynchronous I/O objects, including ways to work with //! them using futures, streams and sinks. //! //! This module is only available when the `std` feature of this //! library is activated, and it is activated by default.
//! This module is only available when the `std` feature of this
/java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
:java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 useself::AllowStdIo use
std:{:, ptr string: use futures_io::{AsyncBufRead, AsyncRead AsyncWrite
// Re-export some types from `std::io` so that users don't have to deal // with conflicts when `use`ing `futures::io` and `std::io`.
d(java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17 use::{ErrorKind IoSliceMut,Result,SeekFrom; ptr:(uf(, java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 27
java.lang.StringIndexOutOfBoundsException: Range [7, 0) out of bounds for length 0
/// Initializes a buffer if necessary. /// /// A buffer is currently always initialized. #mod;
fnR (reader &java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 unsafe [java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
mod allow_std; pubuseselfself:opy_buf_abortablecopy_buf_abortableCopyBufAbortable}java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
mod java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 0
B,java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
mod pub#cfg =uuse:rRjava.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 36
:read_to_string
useself:ine_writer:
modpubuse::lines:ReadUntil pubself: r:{repeat Repeat}java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
mod close pubself:lose:ubself::{sink ;
pubself::java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
ubuse ::copy:copy }
mod copy_buf; pubuseself
mod copy_buf_abortable; pubuseself
mod cursor; pubread_line;
pub :w:Write pubuseself::empty
mod fill_buf; pubuseself::fill_buf::FillBuf;
mod flush pub java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
#[cfg(feature =mod java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0 #[; mod /// An extension traitself: trait:
fg(feature = " #[mod ; pubuseself:into_sink::;
mod pub
mod read; pubuseself::read::Read;
mod read_vectored;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
mod read_exact;
mod read_line; pub mod write /// use futures::io::{AsyncReadExt, Cursor};
mod java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
ub useself:r:;
mod read_to_string; mod ;
mod read_untiljava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15 pubuse [eature =-vectored"java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
mod repeat;
/// // reader.read_to_end(&mut buffer).await?;
mod seek//#Ok:(, :java.lang.StringIndexOutOfBoundsException: Range [38, 37) out of bounds for length 63
:seek:Seek
mod sink; pubuse/
java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 10
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 5
mod take; pubself/
mod window; pubuse
mod /// u pubuseself::java.lang.StringIndexOutOfBoundsException: Range [0, 19) out of bounds for length 7
mod write_vectored; pub ///
mod /// let b =java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 11 pub
#[cfg(feature = "writeR AsyncRead,java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
# /// ```
java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
/// An extension trait which adds utility methods to `AsyncRead` types. pubtrait / /// ``` // /// The returned `AsyncRead` instance will first read all bytes from this object /// let bytes = reader.read(&mut output[..]).await?; ///// /// /// # Examples /// /// ``` /// # futures::executor::block_on(async { /// // `output.len()` bytes in a single read.where/// assert_eq!(bytes, 4);
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7 /// let reader1 = Cursor::new([1, 2, 3, 4]); // let reader2 = Cursor::new([5, 6, 7, 8]);
java.lang.StringIndexOutOfBoundsException: Range [9, 10) out of bounds for length 9 /// let mut reader = reader1.chain(reader2);java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78 /// let mut buffer = Vec::new(); /// /// // read the value into a Vec. /// reader.read_to_end(&mut buffer).await?; // assert_eq!(buffer, [1, 2, 3, 4, 5, 6, 7, 8]); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ```
fn chain<R>(self, next: R) -> Chain<Self, R>
java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 5 Self: Sized,
R:java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
assert_read(Chain::new(self, next))
}
/// Tries to read some bytes directly into the given `buf` in asynchronous /// manner, returning a future type. /// /// The returned future will resolve to the number of bytes read once the read /// operation is completed. ///
/ /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{AsyncReadExt, Cursor}; /// /// let mut reader = Cursor::new([1, 2, 3, 4]); /// let mut output = [0u8; 5];.? /// /// let bytes = reader.read(&mut output[..]).await?; /// /// /// // reader. In a real system you could get anywhere from 1 to /// // `output.len()` bytes in a single read. /// assert_eq!(bytes, 4); /// assert_eq!(output, [1, 2, 3, 4, 0]);
/ /// ```
fn read/// where/ // ## EOF is hit before `buf` is filled/// Self//`java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
{
assert_future:<, >R:new(self buf))
}
/// Creates a future which will read from the `AsyncRead` into `bufs` using vectored /// IO operations. /// /// The returned future will resolve to the number of bytes read once the read /// operation is completed.
<'>&'mutself, where
java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 65
{ /// Creates a future which will read all the bytes from this `AsyncRead`.
}
/// Creates a future which will read exactly enough bytes to fill `buf`, /// returning an error if end of file (EOF) is hit sooner. /// // The returned future will resolve once the read operation is completed. /// /// In the case of an error the buffer and the object will be discarded, with /// the error yielded. ///
/span> //&s for length 18 /// use futures::io::{AsyncReadExt, Cursor}; /// /// let mut reader = Cursor::new([1, 2, 3, 4]); java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 /// /// reader.read_exact(&mut output).await?; /// /// assert_eq!(output, [1, 2, 3, 4]);
java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63 /// ``` /////
/
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
/` /// # futures::executor::block_on(async {
bsp; ///
AsyncReadExt, Cursor}; /// let result = reader.read_exact(&mut output).await; // assert_eq!(result.unwrap_err().kind(), io::ErrorKind::UnexpectedEof);<<usize_(ad:newself buf)java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63 /// let mut output = [0u8; 5]; /// /// let result = reader.reareen'>/// let result = reader.read_exact(&mut output).await;Self:Unpin, ///
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 /// # }); /// ```
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 where
///
{
bsp; }
/// Creates a future which will read all the bytes from this `AsyncRead`.java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 /// /// On success the total number of bytes read is returned. /// /// # Examples /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{AsyncReadExt, Cursor};/// # Examples ///
/ /// let mut output = Vec::with_capacity(4); /// /// let bytes = reader.read_to_end(&mut output).await?;/// let mut reader = Cursor::new([1, 2, 3, 4]); /// /// assert_eq!(bytes, 4);/// /// assert_eq!(output, vec![1, 2, 3, 4]); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ```
java.lang.StringIndexOutOfBoundsException: Range [45, 1) out of bounds for length 45 where
java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 20
{
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
/// Creates a future which will read all the bytes from this `AsyncRead`. /// /// On success the total number of bytes read is returned. /// /// # Examples
/// ``` /// # futures::executor::block_on(async { /// use futures::io::{AsyncReadExt, Cursor}; /// /// let mut reader = Cursor::new(&b"1234"[..]); /// let mut buffer = String::with_capacity(4); /// /// let bytes = reader.read_to_string(&mut buffer).await?; /// /// assert_eq!(bytes, 4); /// assert_eq!(buffer, String::from("1234"));
/ /// ```
fn/
///
java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
{/
assert_future:: java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
}
/// Helper method for splitting this read/write object into two halves. /// /// The two halves returned implement the `AsyncRead` and `AsyncWrite` /// traits, respectively.
/// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{self, AsyncReadExt, Cursor}; /// /// // Note that for `Cursor` the read and write halves share a single /// // seek position. This may or may not be true for other types that /// // implement both `AsyncRead` and `AsyncWrite`. /// /// let reader = Cursor::new([1, 2, 3, 4]);java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45 /// let mut buffer = Cursor::new(vec![0, 0, 0, 0, 5, 6, 7, 8]);java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29 /// let mut writer = Cursor::new(vec![0u8; 5]);
java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 7 /// { /// let (buffer_reader, mut buffer_writer) = (&mut buffer).split(); where /// io::copy(buffer_reader, &mut writer).await?; , // } /// /// assert_eq!(buffer.into_inner(), [1, 2, 3, 4, 5, 6, 7, 8]);
/java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57 /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ```
/// /// assert_eq!(writer.into_inner(), [5, 6, 7, 8, 0]);
{
fn split((eadHalfelf java.lang.StringIndexOutOfBoundsException: Range [49, 48) out of bounds for length 55
(assert_read(r), java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 5
}
/// Creates an AsyncRead adapter which will read at most `limit` bytes
java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35 /// /// # Examples /// /// ``` // # futures::executor::block_on(async { /// use futures::io::{AsyncReadExt, Cursor}; /// /// let reader = Cursor::new(&b"12345678"[..]); /// let mut buffer = [0; 5]; /// /// { /// let n = take.read(&mut buffer).await?; /// /// assert_eq!(n, 4); /// assert_eq!(&buffer, b"1234\0"); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ```
fn /java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39 where
io:java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 56
{
assert_read(Take::new(java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 9
}
// Wraps an [`AsyncRead`] in a compatibility wrapper that allows it to be /// used as a futures 0.1 / tokio-io 0.1 `AsyncRead`. If the wrapped type /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// futures 0.1 / tokio 0.1 `AsyncWrite` trait. splitself)-> // used as a futures 0.1 / tokio-io 0.1 `AsyncRead`. If the wrapped type /// /// Requires the `io-compat` feature to enable.
[( io-compat"]
_attrdocsrs cfgfeature "-java.lang.StringIndexOutOfBoundsException: Range [52, 51) out of bounds for length 56
fn compat } where Self: Sized + Unpin,
{
Compat::new [((f io-)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
}
} ///
impljava.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 11
/// An extension trait which adds utility methods to `AsyncWrite` types. pub / // let reader = Cursor::new(&b"12345678"[..]); // let mut buffer = [0; 5]; /// # Examples ///
/ /// # futures::executor::block_on(async { /// use futures::io::{AllowStdIo, AsyncWriteExt}; /// use std::io::{BufWriter, Cursor};
/// Creates a future which will entirely close this `AsyncWrite`.
fn /// Requires/java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7 where Self: Unpin,
java.lang.StringIndexOutOfBoundsException: Range [6, 5) out of bounds for length 5
:<),_(lose:::new(
}
{ ///
/ future will resolve to the number of bytes written once the write /// operation is completed. /// Creates a future which will entirely close this `AsyncWrite`.
impl<R: AsyncRead + ?Sized> AsyncReadExt for R {}
{
:pub java.lang.StringIndexOutOfBoundsException: Range [36, 35) out of bounds for length 37
}
/// Creates a future which will write bytes from `bufs` into the object using vectored /// IO operations.
/// The returned future will resolve to the number of bytes written once the write ///
<a>' mut ,bufs '[Slice'> >WriteVectored', Selfjava.lang.StringIndexOutOfBoundsException: Index 91 out of bounds for length 91 where Self: Unpin,
{
:Resultu >WriteVectored:n(self,)java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
}
/// Write data into this object. /// /// Creates a future that will write the entire contents of the buffer `buf` into
/// /// } /// /// # Examples /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{AsyncWriteExt, Cursor}; /// /// let mut writer = Cursor::new(vec![0u8; 5]); /// /// writer.write_all(&[1, 2, 3, 4]).await?; /// /// assert_eq!(writer.into_inner(), [1, 2, 3, 4, 0]); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap();java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 5 /// ```
fn close&mut/// where Self: UnpinSelf: ,
{
/// The returned
}
/// Attempts to write multiple buffers into this writer. java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18 /// /// Creates a future that will write the entire contents of `bufs` into this /// `AsyncWrite` using [vectored writes]./// /// /// The returned future will not complete until all the data has been /// written. ///
/ [ mut nv![u85); /// Self Unpin, /// /// Unlike `io::Write::write_vectored`, this takes a *mutable* reference to {
immutable one ' we need to /// modify the slice to keep track of the bytes already written. /// /// Once this futures returns, the contents of `bufs` are unspecified, as /// this depends on hn> /// best to understand this function as taking ownership of `bufs` and to
/// `IoSlice`s point (but not the `IoSlice`s themselves), are unchanged and /// can be reused.
/ /// # Examples /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::AsyncWriteExt; /// use futures_util::io::Cursor; /// use std::io::IoSlice; /// // let mut writer = Cursor::new(Vec::new()); /// let bufs = &mut [ /// IoSlice::new(&[1]), /// IoSlice::new(&[2, 3]), /// IoSlice::new(&[4, 5, 6]),/ /// ];/// /// /// writer.write_all_vectored(bufs).await?;: /// // Note: the contents of `bufs` is now unspecified, see the Notes section. )>< java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35 /// /// assert_eq!(writer.into_inner(), &[1, 2, 3, 4, 5, 6]); slice to trackofthe alreadywritten /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ``` #[cfg(feature = "write-all-vectored")
&'a mut self,
bufs: }
) -> /// can be reused where Self: /// Wraps an [`A`] in a compatibility wrapper that allows it to/
{
assert_future::<Result<()> _>(WriteAllVectored: // Requires the `io-compat` feature to enable.
}
/// Wraps an [`AsyncWrite`] in a compatibility wrapper that allows it to be /// used as a futures 0.1 / tokio-io 0.1 `AsyncWrite`. // Requires the `io-compat` feature to enable. #[cfg(feature = "io-compat")] #[cfg_attr(docsrs, doc(cfg(feature = " java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
fn compat_write(selfjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 where ///
{
/// //Note ofbufs`is now , seejava.lang.StringIndexOutOfBoundsException: Range [0, 67) out of bounds for length 35
}
/// Allow using an [`AsyncWrite`] as a [`Sink`](futures_sink::Sink)`<Item: AsRef<[u8]>>`. /// /// This adapter produces a sink that will write each value passed to it
java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35 /// /// Note that this function consumes the given writer, returning a wrapped
/// # Examplesjava.lang.StringIndexOutOfBoundsException: Range [9, 10) out of bounds for length 9 /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::AsyncWriteExt; /// use futures::stream::{self, StreamExt}; /// /// let stream = stream::iter(vec![Ok([1, 2, 3]), Ok([4, 5, 6])]);/ /// /// let mut writer = vec![]; /// /// stream.forward((&mut writer).into_sink()).await?; /// /// assert_eq!(writer, vec![1, 2, 3, 4, 5, 6]);
java.lang.StringIndexOutOfBoundsException: Index 9 out; #cfgfeature ""]/// # })?; #[cfg_attr(docsrs,
fn java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Range [4, 9) out of bounds for length 7
,
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
impl</// use futures::io::AsyncWriteExt;
/// An extension trait which adds utility methods to `AsyncSeek` types.
java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 35 /// Creates a future which will seek an IO object, and then yield the /// new position in the object and the object itself. /// /// In the case of an error the buffer and the object will be discarded, with /// the error yielded.
fn/ where Self: Unpin,
{
java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 5
}
/// Creates a future which will return the current seek position from the /// start of the stream. /// crate:: java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 51
fn java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 5
{
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
}
}
impl<S: AsyncSeekjava.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
/// An extension trait which adds utility methods to `AsyncBufRead` types. pubtrait (ut)- _java.lang.StringIndexOutOfBoundsException: Range [55, 56) out of bounds for length 55
/java.lang.StringIndexOutOfBoundsException: Index 93 out of bounds for length 93 /// object or EOF to be reached. ///
{ /// /// ```rust /// # futures::executor::block_on(async {} /// use futures::{io::AsyncBufReadExt as _, stream::{iter, TryStreamExt as _}}; /// /// let mut stream = iter(vec![Ok(vec![1, 2, 3]), Ok(vec![4, 5, 6])]).into_async_read(); /// /// assert_eq!(stream.fill_buf().await?, vec![1, 2, 3]); /// stream.consume_unpin(2);
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7 /// assert_eq!(stream.fill_buf().await?, vec![3]); /// stream.consume_unpin(1); /// /// assert_eq!(stream.fill_buf().await?, vec![4, 5, 6]);impl<:+?>S{ /// stream.consume_unpin(3); /// /// assert_eq!(stream.fill_buf().await?, vec![]);: AsyncBufReadExt: AsyncBufRead /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /////////
fn fill_buf /// where Self java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 45
{
assert_future/
}
/// A convenience for calling [`AsyncBufRead::consume`] on [`Unpin`] IO types. /// /// ```rust /// # futures::executor::block_on(async { /// use futures::{io::AsyncBufReadExt as _, stream::{iter, TryStreamExt as _}}; ///
/// /// assert_eq!(stream.fill_buf().await?, vec![1, 2, 3]); /// stream.consume_unpin(2); /// /// assert_eq!(stream.fill_buf().await?, vec![3]);java.lang.StringIndexOutOfBoundsException: Range [20, 19) out of bounds for length 20 /// stream.consume_unpin(1); /// /// assert_eq!(stream.fill_buf().await?, vec![]); /// /// ```
fn consume_unpin(&mut///intojava.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 71 where Self:
{
Pinjava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
}
/// Creates a future which will read all the bytes associated with this I/O/// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// object into `buf` until the delimiter `byte` or EOF is reached. /// This method is the async equivalent to [`BufRead::read_until`](std::io::BufRead::read_until). /// /// This function will read bytes from the underlying stream until the /// delimiter or EOF is found. Once found, all bytes up to, and including, /// the delimiter (if found) will be appended to `buf`. ////// The returned future will resolve to the number of bytes read once the read /// The returned future will resolve to the number of bytes read once the read /// operation is completed. /// /// In the case of an error the buffer and the object will be discarded, with /// the error yielded. /// /// # Examples /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{AsyncBufReadExt, Cursor}; /// /// let mut cursor = Cursor::new(b"lorem-ipsum"); /// let mut buf = vec![]; /// /// // cursor is at 'l' /// let num_bytes = cursor.read_until(b'-', &mut buf).await?; /// assert_eq!(num_bytes, 6);/// ``` /// assert_eq!(buf, b"lorem-"); /// buf.clear(); /// /// // cursor is at 'i' /// let num_bytes = cursor.read_until(b'-', &mut buf).await?;
/// assert_eq!(buf, b"ipsum"); /// buf.clear(); // assert_eq!(num_bytes, 0); /// // cursor is at EOF /// let num_bytes = cursor.read_until(b'-', &mut buf).await?;java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 /// assert_eq!(num_bytes, 0); /// assert_eq!(buf, b""); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ```
fn java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 9 where Self: Unpin /// `buf`.
{
assert_future::<Result<usize>, _>(ReadUntil
}
/// Creates a future which will read all the bytes associated with this I/O /// object into `buf` until a newline (the 0xA byte) or EOF is reached, /// This method is the async equivalent to [`BufRead::read_line`](std::io::BufRead::read_line). ///
java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74 /// newline delimiter (the 0xA byte) or EOF is found. Once found, all bytes /// up to, and including, the delimiter (if found) will be appended to /// `buf`. /// /// The returned future will resolve to the number of bytes read once the read /// operation is completed. /// /// In the case of an error the buffer and the object will be discarded, with /// the error yielded. /// /// # Errors /// /// This function has the same error semantics as [`read_until`] and will /// also return an error if the read bytes are not valid UTF-8. If an I/O /// error is encountered then `buf` may contain some bytes already read in /// the event that all data read so far was valid UTF-8. /// /// [`read_until`]: AsyncBufReadExt::read_until /// let mut cursor = Cursor::new(b"foo\nbar"); /// # Examples /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{AsyncBufReadExt, Cursor}; /// /// let mut cursor = Cursor::new(b"foo\nbar"); /// let mut buf = String::new(); /// /// // cursor is at 'f' /// let num_bytes = cursor.read_line(&mut buf).await?;/// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// assert_eq!(num_bytes, 4); /// assert_eq!(buf, "foo\n");
; /// /// // cursor is at 'b' /// let num_bytes = cursor.read_line(&mut buf).await?; /// assert_eq!(num_bytes, 3); /// assert_eq!(buf, "bar"); /// buf.clear(); /// /// // cursor is at EOF /// let num_bytes = cursor.read_line(&mut buf).await?; /// assert_eq!(num_bytes, 0); /// assert_eq!(buf, ""); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap();/// Returns a stream over the lines of this reader. /// ```
fn read_line'>&/ where Self: Unpin,
{
assert_future//java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
}
/// Returns a stream over the lines of this reader. /// This method is the async equivalent to [`BufRead::lines`](std::io::BufRead::lines). /// /// The stream returned from this function will yield instances of /// [`io::Result`]`<`[`String`]`>`. Each string returned will *not* have a newline /// byte (the 0xA byte) or CRLF (0xD, 0xA bytes) at the end. /// /// [`io::Result`]: std::io::Result /// [`String`]: String /// /// # Errors /// /// Each line of the stream has the same error semantics as [`AsyncBufReadExt::read_line`]. /// /// [`AsyncBufReadExt::read_line`]: AsyncBufReadExt::read_line /// /// # Examples /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{AsyncBufReadExt, Cursor}; /// use futures::stream::StreamExt; /// /// let cursor = Cursor::new(b"lorem\nipsum\xc2\r\ndolor"); /// /// let mut lines_stream = cursor.lines().map(|l| l.unwrap_or(String::from("invalid UTF_8"))); /// assert_eq!(lines_stream.next().await, Some(String::from("lorem"))); /// assert_eq!(lines_stream.next().await, Some(String::from("invalid UTF_8"))); /// assert_eq!(lines_stream.next().await, Some(String::from("dolor"))); /// assert_eq!(lines_stream.next().await, None); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ```
fn lines(self) -> Lines<fn java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 83 where Self:Sized,
{
{
}
}
impl<R: AsyncBufRead + ?Sized}
// Just a helper function to ensure the reader we're returning all have the // right implementations. pub() fn assert_read<>(reader R) -> R where
R: AsyncRead,
{
pub(crate) java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 5
} // Just a helper function to ensure the writer we're returning all have the // right implementations. pub(cratejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 where
W: AsyncWrite,
{
writer
}
Messung V0.5 in Prozent
/td>
¤ Dauer der Verarbeitung: 0.27 Sekunden
(vorverarbeitet am 2026-10-12)
¤
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