Struct IterRead

pub struct IterRead<E: IterReadItem, I: Iterator<Item = E>> { /* private fields */ }

An adapter that allows treating iterators of bytes (and other types that implement IterReadItem) as a Read.

IterReadItem is implemented for u8, &u8, Vec<u8>, [u8; N] and its borrowed variants as well as String and its borrowed variants. It is also implemented for all iterators that take a Result type whose Ok value is an IterReadItem and whose Err value can be converted to an std::io::Error with into().

For inner types other than u8 the adapter might need to buffer some contents of the iterator.

Implementations

impl<E: IterReadItem, I: Iterator<Item = E>> IterRead<E, I>

pub fn new(iter: I) -> IterRead<E, I>

Create a new IterRead which will read from the specified Iterator.

pub fn into_inner(self) -> Fuse<I>

Unwrap the inner iterator. If the adapter uses buffering, the contents of the buffer are lost.

Trait Implementations

impl<E: IterReadItem, I: Iterator<Item = E>> Read for IterRead<E, I>

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

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

fn read_vectored(&mut self, bufs: &mut [IoSliceMut<'_>]) -> Result<usize, Error>

Like read, except that it reads into a slice of buffers.

fn is_read_vectored(&self) -> bool

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

Determines if this Reader has an efficient read_vectored implementation.

fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>

Reads all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>

Reads all bytes until EOF in this source, appending them to buf.

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

Reads the exact number of bytes required to fill buf.

fn read_buf(&mut self, buf: BorrowedCursor<'_>) -> Result<(), Error>

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

Pull some bytes from this source into the specified buffer.

fn read_buf_exact(&mut self, cursor: BorrowedCursor<'_>) -> Result<(), Error>

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

Reads the exact number of bytes required to fill cursor.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>

where Self: Sized,

Transforms this Read instance to an Iterator over its bytes.

fn chain<R>(self, next: R) -> Chain<Self, R>

where R: Read, Self: Sized,

Creates an adapter which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>

where Self: Sized,

Creates an adapter which will read at most limit bytes from it.