Simple Browser

This project is a simple browser implemented in Python using the tkinter library for the GUI and raw socket connections for HTTP communication. It supports basic browsing functionalities, including handling HTTP/HTTPS requests, displaying content, scrolling, and resizing. The browser also has a cache system and can handle gzip compression.

Note: This is a work in progress.

Features

• Basic HTTP/HTTPS Support: Handles GET requests for http and https URLs.
• File Support: Can load local files using the file scheme.
• Data URLs: Supports data scheme URLs.
• View Source: Allows viewing the raw HTML source with the view-source scheme.
• Scrolling: Supports scrolling using the arrow keys and mouse wheel.
• Resizing: The browser window is resizable, and the layout adjusts accordingly.
• Scrollbar: Displays a scrollbar that reflects the visible portion of the document.
• Error Handling: Malformed URLs are handled gracefully by displaying a blank page.

Requirements

• Python 3.x
• tkinter library (usually included with Python)

Installation

1. Clone the repository:

   git clone https://github.com/yourusername/simple-browser.git
   cd simple-browser

2. Run the browser:

   python browser.py <url>

Usage

Running the Browser

To start the browser, run the browser.py script with a URL as an argument:

python browser.py http://example.org/

Supported Schemes

• HTTP/HTTPS: http://example.com, https://example.com
• File: file:///path/to/local/file
• Data: data:text/html,Hello world!
• View Source: view-source:http://example.com
• About Blank: about:blank

Scrolling

• Down Arrow: Scroll down
• Up Arrow: Scroll up
• Mouse Wheel: Scroll up/down

Resizing

• The browser window can be resized, and the content layout will adjust accordingly.

Error Handling

• If a malformed URL is entered, the browser will display a blank page (about:blank).

Code Overview

browser.py

This is the main script that initializes the browser, handles user input, and renders the content.

URL Class

Handles parsing and validation of URLs.

Cache Class

Implements a simple cache to store and retrieve HTTP responses.

HTTPClient Class

Manages HTTP connections, handles redirects, and supports gzip compression.

Browser Class

Handles rendering the content, scrolling, resizing, and drawing the scrollbar.

Helper Functions

• lex(body): Strips HTML tags from the body.
• layout(text): Converts text into a list of displayable items with coordinates.

Contributing

Contributions are welcome! Please fork the repository and submit pull requests for any improvements or bug fixes.

License

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