Huffman Coding
Self-made C++ file archiver and archive extractor programs based on Huffman's lossless compression algorithm
Table of Contents
How does it work?
You can check out documentation inside Compressor.cpp and Decompressor.cpp files to help you understand Huffman's algorithm's inner workings.
Compressor:
The Compressor
is a 2-pass program. What I mean by this is that the Compressor
reads input files twice.
In the first pass, the program counts usage frequency of every unique byte and creates a weighted translation tree for every used unique byte inversely proportional to its usage frequency and then writes this transformation info to the compressed file for decompression purposes
In the second pass, the program translates input files according to the translation tree and writes it to the newly created compressed file
Decompressor:
The Decompressor
is a 1-pass program:
The Decompressor
first reads translation info and creates a binary tree from it. After this process is done, it uses this binary translation tree to decode the rest of the file
How to use it?
- Compile with
make
using your favourate shell:
make all
- After running make, you can use
archive
command below to compress the file you want:
- To compress one file use:
./archive {{filename}}
- To compress multiple files use:
./archive {{filename1}} {{filename2}} ...
- And to decompress a compressed file, use the
extract
command below:
./extract {{filename}}
Roadmap
See the open issues for a list of proposed features (and known issues).
Contributing
Contributions are what make the open source community such an amazing place to be learn, inspire, and create. Any contributions you make are greatly appreciated.
- Fork the Project
- Create your Feature Branch (
git checkout -b feature/AmazingFeature
) - Commit your Changes (
git commit -m 'Add some AmazingFeature'
) - Push to the Branch (
git push origin feature/AmazingFeature
) - Open a Pull Request
License
Distributed under the MIT License. See LICENSE
for more information.
Contact
Rudresh Dixit - 00rudreshdixit@gmail.com
Project Link: https://github.com/shie-ld/huffman-coding