Simple Git

Overview

This project is a minimal Git-like version control system implemented in Python. It provides basic functionalities for working with Git objects, such as blobs and trees. This implementation helps understand how Git internally stores and retrieves data. Inspired by codecrafters build-your-own-git

Features

• Create Blob: Stores file contents as Git blob objects.
• Read Blob: Retrieves and prints blob contents from .git/objects/.
• Read Tree: Parses tree objects to display file structure.
• Custom Object Storage: Mimics Git's object storage structure.

Installation

Ensure you have Python 3 installed on your system.

Clone this repository:

$ git clone https://github.com/omarraf/simple-git.git
$ cd <your-repo-folder>

Usage

1. Creating a Blob

You can create a blob object by running:

from git_clone import create_blob

content = b"Hello, Git!"
blob_hash = create_blob(content)
print("Blob Hash:", blob_hash)

This will store the blob inside .git/objects/ using Git's SHA-1 hashing mechanism.

2. Reading a Blob

To read and display a stored blob:

from git_clone import read_blob

read_blob(blob_hash)  # Use the hash generated from create_blob()

This will output the content of the stored blob.

3. Reading a Tree

If you have a Git tree object stored, you can read it using:

from git_clone import read_tree

read_tree(tree_hash)  # Replace with actual tree hash

This will display the structure of files and subdirectories stored in the tree object.

How It Works

1. The create_blob function creates a Git blob by:
   • Adding a Git header (blob <size>\0)
   • Compressing and storing the content in .git/objects/ using SHA-1.
2. The read_blob function retrieves and decompresses the stored blob.
3. The read_tree function reads and parses a Git tree object.

Dependencies

This project relies on Python's built-in libraries:

• os (File and directory management)
• sys (Error handling)
• zlib (Compression)
• hashlib (SHA-1 hashing)
• time (Timestamp handling)