A comprehensive Rust application for viewing file extensions supported by macOS applications and setting default applications for file types.

• 🔍 Scan System Applications: Automatically discovers all installed applications on macOS
• 📱 File Extension Analysis: Shows which file extensions each application supports
• 🎯 Interactive Query Mode: Search for applications that support specific file types
• ⚙️ Default App Setting: Set default applications for file types using the duti command
• 🚀 UTI Detection: Intelligent UTI (Uniform Type Identifier) detection with retry mechanisms
• 📊 Categorized Display: File extensions are organized by category
• 🔧 Auto-dependency Management: Automatically installs duti via Homebrew if not available

• macOS 10.14 or later
• Homebrew (for automatic duti installation)

# Install dutis directly from Homebrew
brew install tsonglew/dutis/dutis

The application will automatically check for duti on startup and install it via Homebrew if it's not available. No manual installation is required!

# Clone the repository
git clone https://github.com/tsonglew/dutis.git
cd dutis

# Build the project
cargo build --release

# Run the application
cargo run

cargo install --path .

The application starts in interactive mode where you can:

1. View All Applications: See a comprehensive list of all applications and their supported file extensions
2. Search by Extension: Enter a file extension (e.g., txt, pdf, py) to find supporting applications
3. Set Default Apps: Choose an application to set as the default for a specific file type
4. Debug Information: Access detailed scanning information

1. System Directories: Scans /Applications, /System/Applications, and ~/Applications
2. Info.plist Parsing: Reads each application's Info.plist file to extract supported file extensions
3. UTI Mapping: Maps file extensions to their corresponding UTI (Uniform Type Identifier)

1. Bundle ID Detection: Uses mdls command to get the application's Bundle Identifier
2. UTI Detection: Creates temporary files with appropriate content to detect UTI
3. Retry Mechanism: Implements intelligent retry logic for UTI detection
4. duti Integration: Uses the duti command to set system-wide default applications

• Modular Design: Separated into logical modules (app_scanner, plist_parser, platform)
• Cross-Platform Ready: Platform-specific implementations with trait abstractions
• Error Handling: Comprehensive error handling using anyhow
• Async Ready: Designed to be easily extended with async operations

• anyhow: Error handling and propagation
• colored: Terminal output formatting and colors
• walkdir: Directory traversal

Contributions are welcome! Please feel free to submit a Pull Request.

This project is licensed under the MIT License.

If you encounter any issues or have questions, please create an issue on GitHub.