Struct XzDecoder 

pub struct XzDecoder<W: Write> { /* private fields */ }

A compression stream which will have compressed data written to it and will write uncompressed data to an output stream. XzDecoder will no longer perform the finalization automatically in the next miner release, so you need to call XzDecoder::finish manually. If you want to automate the finalization process, please use XzDecoder::auto_finish.

Implementations

impl<W: Write> XzDecoder<W>

pub fn new(obj: W) -> XzDecoder<W>

Creates a new decoding stream which will decode into obj one xz stream from the input written to it.

pub fn new_multi_decoder(obj: W) -> XzDecoder<W>

Creates a new decoding stream which will decode into obj all the xz streams from the input written to it.

pub fn new_stream(obj: W, stream: Stream) -> XzDecoder<W>

Creates a new decoding stream which will decode all input written to it into obj.

A custom stream can be specified to configure what format this decoder will recognize or configure other various decoding options.

pub fn get_ref(&self) -> &W

Acquires a reference to the underlying writer.

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

Acquires a mutable reference to the underlying writer.

Note that mutating the output/input state of the stream may corrupt this object, so care must be taken when using this method.

pub fn try_finish(&mut self) -> Result<()>

Attempt to finish this output stream, writing out final chunks of data.

Note that this function can only be used once data has finished being written to the output stream. After this function is called then further calls to write may result in a panic.

Panics

Attempts to write data to this stream may result in a panic after this function is called.

pub fn finish(self) -> Result<W>

Consumes this decoder, finishing the decompression stream.

This will finish the underlying data stream and then return the contained writer if the finish succeeded.

Note that this function may not be suitable to call in a situation where the underlying stream is an asynchronous I/O stream. To finish a stream the try_finish (or shutdown) method should be used instead. To re-acquire ownership of a stream it is safe to call this method after try_finish or shutdown has returned Ok.

pub fn total_out(&self) -> u64

Returns the number of bytes produced by the decompressor

Note that, due to buffering, this only bears any relation to total_in() after a call to flush(). At that point, total_in() / total_out() is the compression ratio.

pub fn total_in(&self) -> u64

Returns the number of bytes consumed by the decompressor (e.g. the number of bytes written to this stream.)

pub fn auto_finish(self) -> AutoFinishXzDecoder<W>

Convert to AutoFinishXzDecoder that impl Drop trait. AutoFinishXzDecoder automatically calls XzDecoder::try_finish method when exiting the scope.

Trait Implementations

impl<W: Write> Drop for XzDecoder<W>

fn drop(&mut self)

Executes the destructor for this type.

impl<W: Read + Write> Read for XzDecoder<W>

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.

impl<W: Write> Write for XzDecoder<W>

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

Writes a buffer into this writer, returning how many bytes were written.

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

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

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

Like write, except that it writes from a slice of buffers.

fn is_write_vectored(&self) -> bool

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

Determines if this Writer has an efficient write_vectored implementation.

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

Attempts to write an entire buffer into this writer.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

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

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

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

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

where Self: Sized,

Creates a “by reference” adapter for this instance of Write.