Crabfull is a powerful desktop application built with Rust, using the eframe and egui libraries, for real-time log file viewing. It continuously streams and displays the contents of a log file (log.txt) in a scrollable, code-friendly UI with advanced search capabilities.

• Live Log Streaming: Automatically updates the UI as new lines are appended to log.txt
• Modern GUI: Built with egui for a clean, responsive interface
• Threaded File Watching: Uses a background thread to monitor the log file for changes

• Real-time Search:
  • Instant text search with match highlighting
  • Regular expression support with easy toggle
  • Smart partial-text highlighting (only matched portions are highlighted)
  • Red dot indicators for lines containing matches
  • Match counter showing total matches found
• Search Navigation:
  • Quick navigation between matches with ⬆⬇ buttons
  • Auto-scroll to matches when navigating
  • Maintains search state while scrolling

• Line Navigation:
  • Jump to specific line number with Enter key support
  • Quick jump buttons for ±100, ±1K, ±10K lines
  • One-click bottom jump with auto-scroll disable
  • Smooth mouse wheel scrolling
  • Auto-scroll to latest content (can be toggled)

• Efficient Memory Usage:
  • Circular buffer for memory-efficient log viewing
  • Windowed line display for handling large files
  • Smart partial file loading
  • Optimized search highlighting

• Clean Interface:
  • Monospace formatting for better readability
  • Clear line numbers with separator
  • Responsive layout adapting to window size
  • Consistent spacing and alignment

• File Reading:
  • Pause/Resume log file reading
  • Visual pause state indicator
  • Background file monitoring
• Display:
  • Line numbers display with separator
  • Match indicators
  • Status information display
  • Monospace formatting for better readability

1. Build and Run

   # Run with default options (log.txt file and 1M line buffer)
   cargo run --release
   
   # Run with custom log file
   cargo run --release -- mylog.log
   
   # Run with custom buffer size (500K lines)
   cargo run --release -- --buffer-size 500000 mylog.log
   
   # Display help
   cargo run --release -- --help

2. Log File

   • By default, the application reads from log.txt in the current directory
   • You can specify a different log file as a command line argument
   • If the specified log file does not exist, it will be created automatically
   • Any new lines appended to the log file will appear in the viewer in near real-time

3. Command Line Options

   Usage: crabfull [OPTIONS] [LOG_FILE]
   
   Arguments:
     [LOG_FILE]  Path to the log file to monitor [default: log.txt]
   
   Options:
     -b, --buffer-size <SIZE>  Number of lines to keep in memory [default: 1000000]
     -h, --help               Print help
     -V, --version            Print version
   

4. Basic Controls

   • Use the search box to find text in logs
   • Toggle "Regex" for pattern matching
   • Navigate between matches with ⬆⬇ buttons
   • Use jump controls to move through the log file
   • Enter a line number to jump to specific location
   • Click "Pause Reading" to temporarily stop updating

5. Customizing

   • To view a different log file, modify the log_path variable in src/main.rs

• eframe - egui framework
• egui - Immediate mode GUI
• notify - File system notifications
• regex - Regular expression support

• src/main.rs — Main application logic and UI
• log.txt — The log file being monitored
• Cargo.toml — Project manifest and dependencies

MIT or Apache-2.0 (see Rust licensing)

Made with Rust and egui for fast, native log monitoring