caffee 2.4.0

A simple CUI editor for Caffee.

☕ CAFFEE Command Line Text Editor

install

pip install caffee

upgrade

pip install caffee --upgrade

🇯🇵 日本語版README　 Official Japanese UI Plugin　 Nuitka Compilation Guide　 PATH Setup Guide

CAFFEE is a lightweight terminal text editor written in Python using the curses library. It aims to provide a simple, extensible, and efficient editing experience directly in your terminal with modern IDE-like features.

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✨ What's New in v2.4.0

🎨 Modern UI Enhancements

• Interactive Start Screen - Welcome screen with quick access to settings, plugins, and file explorer.
• Tab Bar System - Multi-file editing with visual tab management.
• Split Panel Layout - Toggle file explorer and integrated terminal panels.
• Enhanced Visual Design - Improved color schemes and status indicators.

🚀 Productivity Features

• Git Integration - View the current Git branch, file status in each tab (~: modified, +: new/untracked), and open a diff view (Ctrl+D).
• Command Mode (Ctrl+P) - Execute commands like :open, :saveas, :set, and :diff.
• Predictive Text - Get auto-completion suggestions from words in the current buffer.
• Enhanced File Explorer (Ctrl+F) - Browse and manage files with advanced features:
  • Sort by name, date, or size (s key).
  • Toggle ascending/descending order (o key).
  • Show/hide hidden files (h key).
  • Search with wildcards (/ key).
  • Create, delete, and rename files/directories (a, d, r keys).
• Code Templates (Ctrl+T) - Insert language-specific code snippets.
• Built-in Terminal (Ctrl+N) - Execute commands directly from the editor.
• Plugin & Settings Manager - Interactive menus to manage plugins and editor settings.
• Build & Run (Ctrl+B) - Automatic compilation and execution for various languages.
• Smart Horizontal Scrolling - Nano-style smooth scrolling for long lines.
• Full-Width Character Support - Proper handling of Japanese and other wide characters.

🎨 Syntax Highlighting

• Python, JavaScript, C/C++, Go, Rust, HTML, Markdown, and Git Diff support.
• Customizable color schemes via setting.json.

📑 Multi-Tab Editing

• Ctrl+S - Create a new tab or return to the start screen.
• Ctrl+L - Switch to the next tab.
• Ctrl+X - Close the current tab (prompts if unsaved).

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💡 Core Features

• Small and focused editing experience.
• Undo/Redo history with a configurable limit.
• Mark-based selection and clipboard operations (cut/copy/paste).
• Line operations (delete, comment/uncomment, goto).
• Atomic file saving with automatic backup creation.
• Extensible plugin system and JSON configuration.

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💻 Installation

Requirements

• Python 3.6+
• Unix-like terminal (Linux, macOS, ChromeOS Linux shell)
• curses library (usually included with Python)

Quick Start

# Run the editor
caffee

# Or open a specific file
caffee /path/to/file.py

Optional: Speed Up with Nuitka

For significantly faster startup, compile with Nuitka. See the Nuitka Compilation Guide for detailed instructions.

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⌨️ Keybindings

File Operations

Key	Action
Ctrl+O	Save current file
Ctrl+X	Close current tab / Exit
Ctrl+S	New tab / Start screen
Ctrl+L	Switch to next tab

Editing

Key	Action
Ctrl+Z	Undo
Ctrl+R	Redo
Ctrl+K	Cut (line or selection)
Ctrl+U	Paste
Ctrl+C	Copy selection
Ctrl+Y	Delete current line
Ctrl+/	Toggle comment

Navigation & Search

Key	Action
Ctrl+W	Search (with regex support)
Ctrl+G	Go to line number
Ctrl+E	Move to end of line
Ctrl+A	Select all / Clear selection
Ctrl+6	Set/Unset mark (selection start)

Panels & Tools

Key	Action
Ctrl+F	Toggle file explorer
Ctrl+N	Toggle integrated terminal
Ctrl+T	Insert template
Ctrl+B	Build/Run current file
Ctrl+D	Show Git diff for the current file
Ctrl+P	Enter Command Mode
Esc	Return to editor from panels

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🚀 Command Mode

Press Ctrl+P to enter Command Mode, then type a command and press Enter.

Command	Alias	Description
open <file>	o <file>	Open a file in a new tab.
save	w	Save the current file.
saveas <file>		Save the current file with a new name.
close	q	Close the current tab.
quit	qa	Exit the editor (prompts for unsaved files).
new		Create a new empty tab.
set <key> <val>		Change a setting (e.g., set tab_width 2).
diff		Show a Git diff of the current file in a new tab.

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⚙️ Configuration

User settings are stored in ~/.caffee_setting/setting.json. You can edit this file directly or use the interactive settings manager from the start screen (Ctrl+S -> [2] Choice setting).

Example Configuration

{
  "tab_width": 4,
  "history_limit": 50,
  "use_soft_tabs": true,
  "backup_count": 5,
  "enable_predictive_text": true,
  
  "templates": {
    "python": "def main():\\n    print(\"Hello, world!\")\\n\\nif __name__ == \"__main__\":\\n    main()",
    "javascript": "function main() {\\n    console.log('Hello, world!');\\n}\\n\\nmain();"
  },

  "start_screen_mode": true,
  "show_explorer_default": true,
  "explorer_show_details": true,
  
  "colors": {
    "header_text": "BLACK",
    "header_bg": "WHITE",
    "keyword": "YELLOW",
    "string": "GREEN",
    "comment": "MAGENTA",
    "number": "BLUE",
    "diff_add": "GREEN",
    "diff_remove": "RED"
  }
}

Key Configuration Options

• enable_predictive_text: Enable/disable auto-completion suggestions.
• explorer_show_details: Show file size and modification date in the explorer.
• displayed_keybindings: Customize which keybindings appear in the footer bar.
• colors: Comprehensive color customization for all UI elements.

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🧩 Plugin System

Extend CAFFEE's functionality with custom Python scripts placed in ~/.caffee_setting/plugins/. Use the interactive Plugin Manager (Start Screen -> Ctrl+P) to enable or disable plugins.

Plugin API

Plugins can access the editor's state and functions via an init(editor) entry point, allowing you to:

• Bind custom key combinations.
• Register new syntax highlighting rules.
• Add new build commands.
• Manipulate buffers and the cursor.
• Display custom messages in the status bar.

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🛠️ Troubleshooting

• Display Issues: If colors or special characters don't render correctly, ensure your terminal supports 256 colors and UTF-8. For environments like iSH, CAFFEE attempts to set a compatible TERM variable automatically.
• File Access: If you encounter errors saving files or creating backups, check the permissions for ~/.caffee_setting/.
• Terminal Not Working: The integrated terminal requires pty support (standard on Linux and macOS).

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🤝 Contributing

Contributions are welcome! Please fork the repository, make focused changes in a feature branch, and submit a pull request.

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📄 License

MIT License - See the LICENSE file for details.