Trait bitstream_io::write::HuffmanWrite

pub trait HuffmanWrite<E: Endianness> {
    fn write_huffman<T>(
        &mut self, 
        tree: &WriteHuffmanTree<E, T>, 
        symbol: T
    ) -> Result<()>
    where
        T: Ord + Copy;
}

A trait for anything that can write Huffman codes of a given endianness to an output stream

Required methods

fn write_huffman<T>(
    &mut self,
    tree: &WriteHuffmanTree<E, T>,
    symbol: T
) -> Result<()> where
    T: Ord + Copy, 

Writes Huffman code for the given symbol to the stream.

Errors

Passes along any I/O error from the underlying stream.

Implementors

impl<N, E> HuffmanWrite<E> for BitCounter<N, E> where
    E: Endianness,
    N: AddAssign + From<u32>, 

fn write_huffman<T>(
    &mut self,
    tree: &WriteHuffmanTree<E, T>,
    symbol: T
) -> Result<()> where
    T: Ord + Copy, 

impl<N, E> HuffmanWrite<E> for BitRecorder<N, E> where
    E: Endianness,
    N: Copy + From<u32> + AddAssign + Rem<Output = N> + Eq, 

fn write_huffman<T>(
    &mut self,
    tree: &WriteHuffmanTree<E, T>,
    symbol: T
) -> Result<()> where
    T: Ord + Copy, 

impl<W: Write, E: Endianness> HuffmanWrite<E> for BitWriter<W, E>

fn write_huffman<T>(
    &mut self,
    tree: &WriteHuffmanTree<E, T>,
    symbol: T
) -> Result<()> where
    T: Ord + Copy, 

Example

use std::io::Write;
use bitstream_io::{BigEndian, BitWriter, HuffmanWrite};
use bitstream_io::huffman::compile_write_tree;
let tree = compile_write_tree(
    vec![('a', vec![0]),
         ('b', vec![1, 0]),
         ('c', vec![1, 1, 0]),
         ('d', vec![1, 1, 1])]).unwrap();
let mut writer = BitWriter::endian(Vec::new(), BigEndian);
writer.write_huffman(&tree, 'b').unwrap();
writer.write_huffman(&tree, 'c').unwrap();
writer.write_huffman(&tree, 'd').unwrap();
assert_eq!(writer.into_writer(), [0b10110111]);