//! 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.
// 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`. #[doc(no_inline)] pubuse std::io::{Error, ErrorKind, IoSlice, IoSliceMut, Result, SeekFrom};
/// Initializes a buffer if necessary. /// /// A buffer is currently always initialized. #[inline//! which mirror the `Read`, `Write`, `Seek`, and `BufRead` traits of the//! Asynchronous I/O.//! This module is the asynchronous version of `std::io`. It defines four//! standard library. However, these traits integrate with the asynchronous unsafe fn //! woken when I/O//! woken when I/O is ready.//! In addition, the [`AsyncReadExt`], [`AsyncWriteExt`], [`AsyncSeekExt`], and
//! them using java.lang.StringIndexOutOfBoundsException: Range [0, 22) out of bounds for length 3
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
mod allow_std; pubuseself::allow_std::AllowStdIo;
use:{pin:Pinptr,string:java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 0 pubuse
mod buf_writer; pubuseself::buf_writer::BufWriter;
mod line_writer; pubuseself::#[ocno_inline)]
mod chain; pubuseself::chain::Chain;
modunsafepub std:Error,, ,,Result,SeekFrom}java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
java.lang.StringIndexOutOfBoundsException: Range [49, 27) out of bounds for length 27
mod copy; pubusepubuse
mod copy_buf; pubuseself
mod copy_buf_abortable; pub java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
mod cursor; pub
mod empty;
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 0
// https://github.com/rust-lang/rust/blob/master/src/libstd/sys_common/io.rs#L1 pubuse ::java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 32
mod flush; pubuseself::flush/// Initializes a buffer if necessary./// A buffer is currently always initialized. copy
#[cfg(feature = "sink")]
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0 mod into_sinkjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
puse:::copy_buf_abortable} #cfg_attr(docsrs,doc(cfg(featuresink")] pub
;
elf:lines:ines;
; useself:readuse:::{ufReader SeeKRelative}
mod read_vectored; pubuseself:java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
mod java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
b selfead_exact:;
mod read_line; pubmod into_sink;
mod read_to_end; pub (feature s)]
#[cg_attr(, doc(
java.lang.StringIndexOutOfBoundsException: Range [4, 3) out of bounds for length 43
mod read_until;pub :l:java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
until:ReadUntil;
mod java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 9
ub useself:epeat:,Repeat;
mod seek; pubuseself::seek::Seek;
pubuseself:java.lang.StringIndexOutOfBoundsException: Range [0, 18) out of bounds for length 0
ubuse ::{sink }
mod split;
useself:split::;
mod take; useself:take:ubuseself:copy:copy Copy}
mod window; pubjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
pubself:java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 0 pubself:rite:Write;
mod write_vectored; pubmodmodfill_bufjava.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 13
mod write_all modread_to_string;
# = "-
java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 0 # ="rite-vectored")
repeat
/// An extension trait which adds utility methods to `AsyncRead` types.
AsyncReadExt:AsyncRead { /// Creates an adaptor which will chain this stream with another. /// /// The returned `AsyncRead` instance will first read all bytes from this objectsinkjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9 pubpub use /// output of `next`.
; /// # Examples /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{AsyncReadExt, Cursor};
java.lang.StringIndexOutOfBoundsException: Range [4, 3) out of bounds for length 19 modjava.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 19 #[cfg(feature = "write-all-vectored")]
/ /// let mut reader = reader1.chain(reader2);( =-all)
(); /// /// // read the value into a Vec.
/java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
/
/// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap();Ok<,Boxstd::>() )unwrap; /// ```
fn chainpubuseself::java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 7 where Self:
R: AsyncRead
{ // use futures::io::{AsyncReadExt, Cursor};///
}
/ /// manner, returning a future type. /// /// The returned future will resolve to the number of bytes read once the read /// operation is completed. /// /// # Examples /// /// ``` /// # futures::executor::block_on(async {
/// use futures::io::{AsyncReadExt, Cursor}; /// /// let mut reader = Cursor::new([1, 2, 3, 4]);/// reader.read_to_end(&mut buffer).await?; /// let mut output = [0u8; 5]; # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap();
ytes= java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 11 /// /// // This is only guaranteed to be 4 because `&[u8]` is a synchronouspub
{ /// // `output.len()` bytes in a single read.
/ /// assert_eq!(output, [1, 2, 3, 4, 0]);
/// ```
fn read<'a>/// manner, returning a future type. where
/
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 45
/// IO operations. /// /// The returned future will resolve to the number of bytes read once the read /// operation is completed. /// # futures::executor::block_on(async { where/// assert_eq!(bytes, 4); Self
{
/// # Ok::<(, Box///
}
// Creates a future which will read exactly enough bytes to fill `buf`,read'/ an error if end of file (EOF) is hit sooner.{ ///
/ /// /// In the case of an error the buffer and the object will be discarded, with /// the error yielded. ///
java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18 /// /// ```// operation is completed. // assert_eq!(buffer, [1, 2, 3, 4, 5, 6, 7, 8]); /// 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 /// let mut output = [0u8; 4]; /// /// 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 { /// use futures::io::{self, 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.read_exact(&mut output).await; /// /// assert_eq!(result.unwrap_err().kind(), io::ErrorKind::UnexpectedEof);Self:Unpin
/// # }); /// ```
fn { where Self asse:Result(> >:ews )java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
{
}
/// Creates a future which will read all the bytes from this `AsyncRead`./ /// /// On success the total number of bytes read is returned.java.lang.StringIndexOutOfBoundsException: Index 81 out of bounds for length 81 /// /// # Examples /// /// ``` // let mut reader = Cursor::new([1, 2, 3, 4]);/// # Examples /// use futures::io::{AsyncReadExt, Cursor};/// /// // let mut reader = Cursor::new([1, 2, 3, 4]); /// let mut output = Vec::with_capacity(4); /// /// let bytes = reader.read_to_end(&mut output).await?; /// /// assert_eq!(bytes, 4); /// assert_eq!(output, vec![1, 2, 3, 4]); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ``` Self Unpin, where Self: {
{
assert_future}
}
/// Creates a future which will read all the bytes from this `AsyncRead`. // /// On success the total number of bytes read is returned. /// } /// ```: /// # futures::executor::block_on(async {/
/ ///
/// assert_eq!(bytes, 4); where
/// ``
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
}
/// Helper method for splitting this read/write object into two halves. ///
/// The two halves returned implement the `AsyncRead` and `AsyncWrite` /// traits, respectively.
java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 7
java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18 /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{self, AsyncReadExt, Cursor}; /// /// // Note that for `Cursor` the read and write halves share a single
/ ///
: /// let mut buffer = Cursor::new(vec![0, 0, 0, 0, 5, 6, 7, 8]); /java.lang.StringIndexOutOfBoundsException: Range [13, 12) out of bounds for length 20 /// Helper method for splitting this read/write object into two halves. /// { /// let (buffer_reader, mut buffer_writer) = (&mut buffer).split(); /// io::copy(reader, &mut buffer_writer).await?; /// io::copy(buffer_reader, &mut writer).await?; /// }
/
/// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ``` self - R<elf>WriteHalfSelf>) where Self: AsyncWrite + Sized,
{ let (r, w) = split::split(self) /// // seek position. This may or may not be true for other types that /// from the underlying reader.
}
/java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7 /// from the underlying reader. // # futures::executor::block_on(async { /// # Examples /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{AsyncReadExt, Cursor}; /// /// let reader = Cursor::new(&b"12345678"[..]); /// let mut buffer = [0; 5]; /// /// let mut take = reader.take(4); /// 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 take(self io:c(buffer_reader, & writer)await; where Self: Sized,
{
assert_read(Take::/java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
}
/ /// implements [`AsyncWrite`] as well, the result will also implement the
` trait ///
java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51 #[cfgattr(docsrs,doc(cfg(feature = iocompat")))(assert_readr,assert_write(java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41 #c(,doc(eature =io-")]
fn compat /// from the underlying reader. where Self: Sized ///impl</
{
Compat::new(elfjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
}
}
impl<R
/// An extension trait which adds utility methods to `AsyncWrite` types. pub/// use futures::io::{AllowStdIo, AsyncWriteExt};
/ /// /// /// # Examples ///
/// # futures::executor::block_on(async {/// let mut buffered = AllowStdIo::new(BufWriter::new(writer)); // use futures::io::{AllowStdIo, AsyncWriteExt}; /// use std::io::{BufWriter, Cursor}; ///
java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 7 /// /// { letwriter = /// let mut buffered = AllowStdIo::new(BufWriter::new(writer));: /// buffered.write_all(&[1, 2]).await?;
/// buffered.flush().await?; /// } /// /// assert_eq!(output, [1, 2, 3, 4, 0]); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ```
java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 5 where Self: Unpin
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
// The returned
}
/java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
fn close java.lang.StringIndexOutOfBoundsException: Range [9, 10) out of bounds for length 9 where Self: Unpinassert_future:<traitjava.lang.StringIndexOutOfBoundsException: Range [25, 23) out of bounds for length 37
{
}
/// Creates a future which will write bytes from `buf` into the object.write_vectored&a self : a oSlice<a]-><a, Self> /// /// The returned future will resolve to the number of bytes written once the write /// operation is completed.
fn write<' assert_future:<Result<size>, _(:ew(self,bufs) where Selfjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
assert_future::</// buffered.flush(
}
/// 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 // operation is completed.
fn write_vectored<'a>(&'a /// where Self: Unpin,
{
assert_future: java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
}
/// Write data into this object.
/// Creates a future that will write the entire contents of the buffer `buf` into /// this `AsyncWrite`. /// future will not complete until all the data has been written.
} /// # Examples /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{AsyncWriteExt, Cursor}; java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7 ///
t :(![u8; 5); /// /// writer.write_all(&[1, 2, 3, 4]).await?;: java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20 /// /// assert_eq!(writer.into_inner(), [1, 2, 3, 4, 0]); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// IO operations.
// where Self: Unpin // operation is completed.
{
assert_future::<Result<()>, _>(WriteAll:newselfbufjava.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
}
/// Attempts to write multiple buffers into this writer. /// /// Creates a future that will write the entire contents of `bufs` into this /// /// /// The returned future will not complete until all the data has been /// written. ///
/ /// /// # Notes /// /// Unlike `io::Write::write_vectored`, this takes a *mutable* reference to /// a slice of `IoSlice`s, not an immutable one. That's because we need to /// modify the slice to keep track of the bytes already written./// # futures::executor::block_on(async { /// /// Once this futures returns, the contents of `bufs` are unspecified, as /// this depends on how many calls to `write_vectored` were necessary. It is/ /// 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 of bounds for length 9 /// # })?; /// # Ok::<(), Box<dyn std::error::Error>>(()) /// ``` #[ :self #[java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0
fn into_sink where Self: Sized,
{
}
}
<:java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
/// An extension trait which adds utility methods to `AsyncSeek` types. pub //let :(ecOk1 /// 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/// stream.forward((&mut writer).into_sink()).await?; /// the error yielded.
fn // # Ok::<(), Box<dyn std::error::Error>>(())
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9 Self: Unpin /// ```
java.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 61
}
/ /// start of the stream. /// /// This is equivalent to `self.seek(SeekFrom::Current(0))`.
java.lang.StringIndexOutOfBoundsException: Range [7, 6) out of bounds for length 51 where Self:
{ self/// An extension trait which adds utility methods to `AsyncSeek` types.
}
}
impl<S}
/// An extension trait which adds utility methods to `AsyncBufRead` types. pub
/ /// object or EOF to be reached. ///
seekeek& :SeekFrom -Seek' > /// /// ```rust
// ::block_on java.lang.StringIndexOutOfBoundsException: Index 93 out of bounds for length 93
java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7 /// /// 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); /// /// assert_eq!(stream.fill_buf().await?, vec![3]); /// stream.consume_unpin(1); /// /// assert_eq!(stream.fill_buf().await?, vec![4, 5, 6]);
/ /// /// assert_eq!(stream.fill_buf().await?, vec![]); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ``` impl< AsyncSeek + Sized AsyncSeekExt S } where Self: Unpin,
{
assert_future::<pubtrait
}
/// 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 _}}; /// /// # futures::executor::block_on(async { /// /// assert_eq!(stream.fill_buf().await?, vec![1, 2, 3]); /// stream.consume_unpin(2);/// 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![3]); /// stream.consume_unpin(1); /// /// assert_eq!(stream.fill_buf().await?, vec![]); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ```(.java.lang.StringIndexOutOfBoundsException: Range [36, 34) out of bounds for length 53
fn consume_unpin(&mutself, /// assert_eq!(stream.fill_buf().await?, vec![1, 2, 3]); where Self: /// assert_eq!(stream.fill_buf().await?, vec![3]);java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
{
Pin:: // A convenience for calling [`AsyncBufRead::consume`] on [`Unpin`] IO types.
}
/java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
b` delimiter`or.
/ /// /// This function will read bytes from the underlying stream until the /// delimiter or EOF is found. Once found, all bytes up to, and including,
///
/ /// operation is completed. /// /// In the case of an error the buffer and the object will be discarded, with, /// the error yielded.
P) /// # 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-");
////// /// // cursor is at 'i' /// /// assert_eq!(num_bytes, 5); /// assert_eq!(buf, b"ipsum"); /// buf.clear(); /// /// // cursor is at EOF /// let num_bytes = cursor.read_until(b'-', &mut buf).await?;/// let mut buf = vec![]; /// assert_eq!(num_bytes, 0);
/
java.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 20 Self/// let num_bytes = cursor.read_until(b'-', &mut buf).await?; // // cursor is at EOF
assert_future:/java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
}
/// 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). /// /// This function will read bytes from the underlying stream until the /// 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/// newline delimiter (the 0xA byte) or EOF is found. Once found, all bytes /// 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 /// /// # Examples /// /// ``` /// # futures::executor::block_on(async { /// use futures::io::{AsyncBufReadExt, Cursor}; /// also return an error if the read bytes are not valid UTF-8. If an I/O
/// 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?; /// assert_eq!(num_bytes, 4);
/java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
/ /// /// // 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(); /// ```
fn java.lang.StringIndexOutOfBoundsException: Range [33, 17) out of bounds for length 33 where Self: /// buf.clear()
{
java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
}
/// 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
/// /// [`io::Result`]: std::io::Result // The stream returned from this function will yield instances of ///
/// /// Each line of the stream has the same error semantics as [`AsyncBufReadExt::read_line`]. /// /// # Errors /// /// # Examples /// /// ```hlinejava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
/// use futures::io::{AsyncBufReadExt, Cursor};
/// /// let cursor = Cursor::new(b"lorem\nipsum\xc2\r\ndolor"); ///
/ /// /// assert_eq!(lines_stream.next().await, Some(String::from("invalid UTF_8")));java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7 /// assert_eq!(lines_stream.next().await, Some(String::from("dolor"))); /// assert_eq!(lines_stream.next().await, None); /// # Ok::<(), Box<dyn std::error::Error>>(()) }).unwrap(); /// ```
lines where Self: Sized :Sized,
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
}
:R -R
// Just a helper function to ensure the reader we're returning all have the // right implementations.
java.lang.StringIndexOutOfBoundsException: Range [10, 3) out of bounds for length 44 where
R: AsyncRead}
{
reader
} // Just a helper function to ensure the writer we're returning all have the // right implementations. pub(crate) fn assert_write// Just a helper function to ensure the reader we're returning all have the where
W: java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 5
{
writer
}
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