mcBase64x32

A high-performance Base64x32 implementation specialized for maximizing data storage in Minecraft books, written in Rust for maximum performance.

_{Minecraft book page filled with mcbase64x32 characters}

Overview

mcBase64x32 is a custom encoding scheme designed specifically for storing data efficiently in Minecraft books. It uses a 64x32-2-character alphabet using Unicode characters of pixel width of 1 and 2 and by combining these characters we achieve optimal compression while keeping the Minecraft book limits of characters and pixels.

We basically use a bunch of 1 and 2 pixel width Unicode characters to build 2048 unique pairs of them that then we use to encode and decode data.

Features

• High Performance: Implemented in Rust for ultra-fast encoding/decoding
• Minecraft Optimized: Designed specifically for maximum data storage in Minecraft books
• Zero Dependencies: No external Python dependencies required

Installation

Using uv (Recommended)

uv add mcbase64x32

Using pip

pip install mcbase64x32

From Source

git clone https://github.com/victordlp8/mcBase64x32.git
cd mcBase64x32
uv sync
uv tool install -e .

Quick Start

import mcbase64x32


# Encode data
data = b"Hello, Minecraft World!"
encoded = mcbase64x32.encode(data)
print(f"Encoded: {encoded}")

# Decode data
decoded = mcbase64x32.decode(encoded)
print(f"Decoded: {decoded.decode()}")

# Check compression ratio
original_size = len(data)
encoded_size = len(encoded)
compression_ratio = original_size / encoded_size
print(f"Compression ratio: {compression_ratio:.2f}x")

API Reference

Functions

encode(payload: bytes) -> str

Encodes binary data into mcBase64x32 format.

Parameters:

• payload (bytes): The binary data to encode

Returns:

• str: The encoded string in mcBase64x32 format

decode(text_in_mcbase64x32: str) -> bytes

Decodes mcBase64x32 string back to binary data.

Parameters:

• text_in_mcbase64x32 (str): The encoded string to decode

Returns:

• bytes: The decoded binary data

Raises:

• ValueError: If the encoded string contains invalid characters

Constants

MAX_BYTES_PER_PAGE

The maximum number of bytes that can be stored per Minecraft book page (694 bytes).

How It Works

mcBase64x32 uses a custom encoding scheme that:

1. Converts data to 11-bit chunks: Each chunk represents a value from 0-2047
2. Maps to Unicode characters: Uses a custom built 64x32-2-character alphabet made of pairs of Unicode characters
3. Optimizes for Minecraft: Designed specifically for maximum data storage in Minecraft books
4. Includes dynamic length header: up to 32-bit length prefix ensures proper decoding
5. Rust-powered: Compiled Rust extension for maximum performance

Performance

The implementation is optimized for speed using:

• Rust compilation: Native compiled code for maximum performance
• Pre-computed lookup tables: Character mappings are pre-calculated at compile time
• Bit manipulation: Efficient binary operations for encoding/decoding
• Memory optimization: Minimal memory allocations during processing

Testing

Run the test suite:

# Using uv
uv run pytest

# Using pytest directly
pytest

# With coverage
uv run pytest --cov=mcbase64x32

Requirements

• Python >= 3.13
• No external dependencies required

Development

Setup Development Environment

git clone https://github.com/victordlp8/mcBase64x32.git
cd mcBase64x32
uv sync

Running Tests

uv run pytest

Building Package

uv build

License

This project is licensed under the MIT License - see the LICENSE file for details.

Authors

• ThorTuwy - Initial work and inventor of the custom base
• victordlp8 - Main developer and maintainer