binformatlib 6.3.0

A beginner-friendly binary format packing/unpacking module with full hex and byte control.

binformatlib

Version: 6.3.0
Author: jony eldry
License: MIT

binformatlib is a lightweight and beginner-friendly Python library for packing and unpacking binary files with full control over bytes and hexadecimal representations. It supports recursive nested field structures, custom EOF markers, and encodes the full file as hex for maximum readability and integrity.

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✨ Features

• Convert values (strings, integers, bytes, lists, etc.) into binary-safe formats
• Pack structured data dictionaries into hex-encoded binary files
• Unpack hex-encoded binary files back into nested Python dictionaries
• Flat field key formatting using dot notation (e.g., header.version)
• Optional custom EOF marker
• Simple to use and extend

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📦 Installation

You can install binformatlib via pip:

pip install binformatlib

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🚀 Quick Start

Packing a File

from binformatlib import pack

format = {
    "meta": {
        "version": 1,
        "author": "jony"
    },
    "data": None,
    "end of file": "<EOF>"
}

pack(format, "output.bin", "Hello, World!")

Unpacking a File

from binformatlib import unpack

data = unpack("output.bin")
print(data)

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🔧 Internals

_to_bytes(value)

Converts input of type str, int, bytes, list, or None into a bytes object.

_flatten_fields(dict, prefix='')

Recursively flattens nested dictionaries into key-value pairs using dot notation.

pack(format: dict, output_file: str, data: str) -> bool

Serializes and hex-encodes a structured dictionary with data into a .bin file.

unpack(input_file: str) -> dict

Reconstructs the original nested dictionary from a packed .bin file.

tohex(value)

Converts a string to its hexadecimal representation.

fromhex(hex_string: bytes)

Converts a hexadecimal-encoded bytestring back to raw bytes.

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🧪 Example

$ python binformatlib.py
{'data': b'test'}

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📁 File Format

Each line in the binary file follows the format:

key=hexvalue

Where key can use dot-notation (e.g., meta.version) and hexvalue is the hex string of the binary-encoded data.

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🛠 Development

Clone and run locally:

git clone https://github.com/yourusername/binformatlib.git
cd binformatlib
python binformatlib.py

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📄 License

This project is licensed under the MIT License.

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✉️ Contact

Author: jony eldry
Email: [e-mail]