Struct cursive::utils::ProgressReader

pub struct ProgressReader<R: Read> { /* fields omitted */ }

Wrapper around a Read that reports the progress made.

Used to monitor a file downloading or other slow IO task in a progress bar.

Methods

impl<R: Read> ProgressReader<R>

fn new(counter: Counter, reader: R) -> Self

Creates a new ProgressReader around reader.

counter will be updated with the number of bytes read.

You should make sure the progress bar knows how many bytes should be received.

fn deconstruct(self) -> (R, Counter)

Unwraps this ProgressReader, returning the reader and counter.

Trait Implementations

impl<R: Read> Read for ProgressReader<R>

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.

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>) -> Result<usize, Error>

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

fn read_to_string(&mut self, buf: &mut String) -> 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 chars(self) -> Chars<Self>

🔬 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.

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.