Struct HuffmanReader

pub struct HuffmanReader<R>
where
    R: Read,
{ /* private fields */ }

HuffmanReader is a Read implementation that can read encoded words from the inner reader

Examples

extern crate huffman_coding;
let pseudo_data = vec![0, 0, 1, 2, 2];
let tree = huffman_coding::HuffmanTree::from_data(&pseudo_data[..]);

use std::io::{Read, Cursor};
let cursor = Cursor::new([43, 8]);
let mut buffer: [u8; 5] = [0; 5];

let mut reader = huffman_coding::HuffmanReader::new(cursor, tree);
assert!(reader.read_exact(&mut buffer[..]).is_ok());
assert_eq!(&buffer[..], &[2, 2, 0, 0, 1]);

Implementations

impl<R> HuffmanReader<R>

where R: Read,

pub fn new(reader: R, tree: HuffmanTree) -> Self

Construct a new reader, using the provided HuffmanTree for decoding

Trait Implementations

impl<R> Read for HuffmanReader<R>

where R: Read,

fn read(&mut self, buf: &mut [u8]) -> IOResult<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.