Struct snap::read::FrameDecoder

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

A reader for decompressing a Snappy stream.

This FrameDecoder wraps any other reader that implements std::io::Read. Bytes read from this reader are decompressed using the Snappy frame format (file extension sz, MIME type application/x-snappy-framed).

This reader can potentially make many small reads from the underlying stream depending on its format, therefore, passing in a buffered reader may be beneficial.

Implementations

impl<R: Read> FrameDecoder<R>

pub fn new(rdr: R) -> FrameDecoder<R>

Create a new reader for streaming Snappy decompression.

pub fn get_ref(&self) -> &R

Gets a reference to the underlying reader in this decoder.

pub fn get_mut(&mut self) -> &mut R

Gets a mutable reference to the underlying reader in this decoder.

Note that mutation of the stream may result in surprising results if this decoder is continued to be used.

Trait Implementations

impl<R: Debug + Read> Debug for FrameDecoder<R>

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

Formats the value using the given formatter.

impl<R: Read> Read for FrameDecoder<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.

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>) -> 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, appending them to 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.