Struct bytes::buf::Reader [] [src]

pub struct Reader<B> { /* fields omitted */ }

A Buf adapter which implements io::Read for the inner value.

This struct is generally created by calling reader() on Buf. See documentation of reader() for more details.

Methods

impl<B: Buf> Reader<B>
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Important traits for &'a mut R
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Gets a reference to the underlying Buf.

It is inadvisable to directly read from the underlying Buf.

Examples

use bytes::Buf;
use std::io::{self, Cursor};

let mut buf = Cursor::new(b"hello world").reader();

assert_eq!(0, buf.get_ref().position());

Important traits for &'a mut R
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Gets a mutable reference to the underlying Buf.

It is inadvisable to directly read from the underlying Buf.

Examples

use bytes::Buf;
use std::io::{self, Cursor};

let mut buf = Cursor::new(b"hello world").reader();
let mut dst = vec![];

buf.get_mut().set_position(2);
io::copy(&mut buf, &mut dst).unwrap();

assert_eq!(*dst, b"llo world"[..]);

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Consumes this Reader, returning the underlying value.

Examples

use bytes::Buf;
use std::io::{self, Cursor};

let mut buf = Cursor::new(b"hello world").reader();
let mut dst = vec![];

io::copy(&mut buf, &mut dst).unwrap();

let buf = buf.into_inner();
assert_eq!(0, buf.remaining());

Trait Implementations

impl<B: Debug> Debug for Reader<B>
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Formats the value using the given formatter. Read more

impl<B: Buf + Sized> Read for Reader<B>
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Pull some bytes from this source into the specified buffer, returning how many bytes were read. Read more

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🔬 This is a nightly-only experimental API. (read_initializer)

Determines if this Reader can work with buffers of uninitialized memory. Read more

1.0.0
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Read all bytes until EOF in this source, placing them into buf. Read more

1.0.0
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Read all bytes until EOF in this source, appending them to buf. Read more

1.6.0
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Read the exact number of bytes required to fill buf. Read more

Important traits for &'a mut R
1.0.0
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Creates a "by reference" adaptor for this instance of Read. Read more

Important traits for Bytes<R>
1.0.0
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Transforms this Read instance to an [Iterator] over its bytes. Read more

Important traits for Chars<R>
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🔬 This is a nightly-only experimental API. (io)

the semantics of a partial read/write of where errors happen is currently unclear and may change

Transforms this Read instance to an [Iterator] over [char]s. Read more

Important traits for Chain<T, U>
1.0.0
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Creates an adaptor which will chain this stream with another. Read more

Important traits for Take<T>
1.0.0
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Creates an adaptor which will read at most limit bytes from it. Read more