Struct Decoder

pub struct Decoder { /* private fields */ }

Decoder is a raw decoder for decompressing bytes in the Snappy format.

This decoder does not use the Snappy frame format and simply decompresses the given bytes as if it were returned from Encoder.

Unless you explicitly need the low-level control, you should use read::FrameDecoder instead, which decompresses the Snappy frame format.

Implementations

impl Decoder

pub fn new() -> Decoder

Return a new decoder that can be used for decompressing bytes.

pub fn decompress(&mut self, input: &[u8], output: &mut [u8]) -> Result<usize>

Decompresses all bytes in input into output.

input must be a sequence of bytes returned by a conforming Snappy compressor.

The size of output must be large enough to hold all decompressed bytes from the input. The size required can be queried with the decompress_len function.

On success, this returns the number of bytes written to output.

Errors

This method returns an error in the following circumstances:

• Invalid compressed Snappy data was seen.
• The total space required for decompression exceeds 2^32 - 1.
• output has length less than decompress_len(input).

pub fn decompress_vec(&mut self, input: &[u8]) -> Result<Vec<u8>>

Decompresses all bytes in input into a freshly allocated Vec.

This is just like the decompress method, except it allocates a Vec with the right size for you. (This is intended to be a convenience method.)

This method returns an error under the same circumstances that decompress does.

Trait Implementations

impl Clone for Decoder

fn clone(&self) -> Decoder

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Decoder

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

Formats the value using the given formatter.

impl Default for Decoder

fn default() -> Decoder

Returns the “default value” for a type.