blob: 36ffd564a48a19dbbbedf17525d0f44494a5a796 [file] [log] [blame] [view]
# BitReader
BitReader is a helper type to extract strings of bits from a slice of bytes.
[![Published Package](https://img.shields.io/crates/v/bitreader.svg)](https://crates.io/crates/bitreader)
[![Documentation](https://docs.rs/bitreader/badge.svg)](https://docs.rs/bitreader)
[![Build Status](https://github.com/irauta/bitreader/actions/workflows/rust.yml/badge.svg?branch=master)](https://github.com/irauta/bitreader/actions/workflows/rust.yml)
Here is how you read first a single bit, then three bits and finally four bits from a byte buffer:
use bitreader::BitReader;
let slice_of_u8 = &[0b1000_1111];
let mut reader = BitReader::new(slice_of_u8);
// You obviously should use try! or some other error handling mechanism here
let a_single_bit = reader.read_u8(1).unwrap(); // 1
let more_bits = reader.read_u8(3).unwrap(); // 0
let last_bits_of_byte = reader.read_u8(4).unwrap(); // 0b1111
You can naturally read bits from longer buffer of data than just a single byte.
As you read bits, the internal cursor of BitReader moves on along the stream of bits. Big endian format is assumed when reading the multi-byte values. BitReader supports reading maximum of 64 bits at a time (with read_u64).
## License
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.