LZip - Just another Zip implementation

What's so great about it?

• Also works on smaller files
• compression rates up to 87%! (normally around 50%) (and even more under unrealistic circumstances :) )

Format of lzip files

1 bytes - Magic Byte of lzip file [0x23] [for checking if file is actual lzip]
1 byte - length of following bit alignments
n bits - bit alignments to fill up to full bytes
2 bytes - Length of coming huffmann tree
n bytes - The serialized huffmann tree [which holds bit - char assignment]
n bytes - The actual encoded data using the tree

Installation

git clone https://github.com/the-lightstack/lzip.git
cd ./lzip
chmod +x ./lzip
sudo mv ./lzip /usr/bin
pip3 install -r requirements.txt

Usage

Get Help

lzip -h 

Compress file

lzip -c <file to compress> 

Default output to out.lzip

Uncompress file

lzip -d <file to uncompress>

Default output to plain_data.txt

Define output file

lzip [-d/-c] <file> -o <filename>

Writes output to specified file

Compression Rates

• Text files: ~ 50%
• ELF-Binaries: ~ 35%
• Images: ~ 2-5%

TODO

• Add -o parameter to define output file
• Fix failure when encountering null-bytes ( which prevents from zipping most non-text files)