Struct flate2::bufread::MultiGzDecoder

pub struct MultiGzDecoder<R: BufRead> { /* fields omitted */ }

A gzip streaming decoder that decodes all members of a multistream

A gzip member consists of a header, compressed data and a trailer. The gzip specification, however, allows multiple gzip members to be joined in a single stream. MultiDecoderReaderBuf will decode all consecutive members while DecoderReaderBuf will only decompress the first gzip member. The multistream format is commonly used in bioinformatics, for example when using the BGZF compressed data.

This structure exposes a Read interface that will consume all gzip members from the underlying reader and emit uncompressed data.

Methods

impl<R: BufRead> MultiDecoderReaderBuf<R>

fn new(r: R) -> Result<MultiDecoderReaderBuf<R>>

Creates a new decoder from the given reader, immediately parsing the (first) gzip header. If the gzip stream contains multiple members all will be decoded.

If an error is encountered when parsing the gzip header, an error is returned.

fn header(&self) -> &Header

Returns the current header associated with this stream.

fn get_ref(&self) -> &R

Acquires a reference to the underlying reader.

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

Acquires a mutable reference to the underlying stream.

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

fn into_inner(self) -> R

Consumes this decoder, returning the underlying reader.

Trait Implementations

impl<R: BufRead> Read for MultiDecoderReaderBuf<R>

fn read(&mut self, into: &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.

impl<R: BufRead + Write> Write for MultiDecoderReaderBuf<R>

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

Write a buffer into this object, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

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

Attempts to write an entire buffer into this write.

fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

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

Creates a "by reference" adaptor for this instance of Write.