Improve Dynamic and 2D Ring Buffer Implementation, Enhance Shell Functionality, and Add Comments and Error Checks

[Galfurian]

Improve Dynamic and 2D Ring Buffer Implementation, Enhance Shell Functionality, and Add Comments and Error Checks

1. Dynamic and 2D Ring Buffer Improvements:

• Simplified the implementation of the dynamic ring buffer (9231a37, e4652f9).
• Revised the dynamic-size and 2D ring buffers to enhance performance and flexibility (d8eced0).
• Implemented shell history management using a 2D ring buffer (4b9fd59).
• Further improvements and optimizations to the 2D ring buffer (7462a42).

2. Shell Enhancements:

• Improved keyboard input and getchar functionalities (3291167).
• Adapted login and shell to integrate new keyboard features (3291167).
• Revised the command suggestion system, with continued work on making it fully functional (664bb4d).
• Implemented relative (./) and absolute path suggestions (56ae3c3, 9219e20).
• Enhanced the shell suggestion system to include smarter path searching (36ba9bc, 41ee3ea).
• Added comments and error checks to all shell commands for improved stability and maintainability (0798b3d).

3. Keyboard and Cursor Features:

• Added a cursor shape-changing routine for better visual feedback (1a650e8).
• Introduced new keyboard combinations for more intuitive control (ad2a153).
• Standardized the way key sequences are handled by the keyboard driver (221f5a1).

4. Bug Fixes and Refactoring:

• Fixed a dangling pointer issue (4796d2c).
• Addressed test failures and improved the reliability of the test suite (176cbba).
• Moved IPC function definitions inside syscall.h and added necessary comments (34b3e1d).
• Improved memory-related functions by adding comments and error checks (f5a4d9a, a386be3).

Key Features:

• Enhanced dynamic and 2D ring buffer mechanisms.
• Smarter and more responsive shell command suggestions.
• Improved keyboard handling with new features and standardizations.
• Comprehensive error checks and added documentation across key components.

Notes:

Work on refining the suggestion system is ongoing, and additional updates may follow in future commits.