Struct utf8_io::Utf8Reader

pub struct Utf8Reader<Inner: Read> { /* fields omitted */ }

A Read implementation which translates from an input Read producing an arbitrary byte sequence into a valid UTF-8 sequence with invalid sequences replaced by U+FFFD (REPLACEMENT CHARACTER) in the manner of String::from_utf8_lossy, where scalar value encodings never straddle read calls (callers can do str::from_utf8 and it will always succeed).

Implementations

impl<Inner: Read> Utf8Reader<Inner>

pub fn new(inner: Inner) -> Self

Construct a new instance of Utf8Reader wrapping inner.

Trait Implementations

impl<Inner: Read + AsFd> AsFd for Utf8Reader<Inner>

fn as_fd(&self) -> BorrowedFd<'_>

Borrows the file descriptor.

impl<Inner: Read + AsRawFd> AsRawFd for Utf8Reader<Inner>

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl<Inner: Read + Debug> Debug for Utf8Reader<Inner>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<Inner: Read> Read for Utf8Reader<Inner>

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_to_string(&mut self, buf: &mut String) -> Result<usize>

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

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.

unsafe fn initializer(&self) -> Initializer

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

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

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

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

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

Read the exact number of bytes required to fill buf.

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

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

fn bytes(self) -> Bytes<Self>

Transforms this Read instance to an Iterator over its bytes.

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

Creates an adaptor which will chain this stream with another.

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

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

impl<Inner: Read> ReadStr for Utf8Reader<Inner>

fn read_str(&mut self, buf: &mut str) -> Result<usize>

Like read but produces the result in a str. Be sure to check the size field of the return value to see how many bytes were written.

fn read_exact_str(&mut self, buf: &mut str) -> Result<()>

Like read_exact but produces the result in a str.