Xcode Errors MCP Server

# Xcode Build Error Detection Fixes ## Problem The MCP server couldn't detect Xcode build errors that were clearly visible in Xcode's Issue Navigator. ## Root Causes Identified 1. **Binary Log Format Issue**: The parser tried to read `.xcactivitylog` files as text, but these are binary files requiring special handling 2. **Missing Real-time Monitoring**: Only looked at completed build logs, not live build errors 3. **Incorrect Log Parsing**: Regex patterns weren't comprehensive enough for all error types 4. **Limited Process Monitoring**: Didn't monitor all Xcode build tools ## Solutions Implemented ### 1. Fixed Binary Log Parsing ✅ - Added proper handling for `.xcactivitylog` files using `xcrun xcactivitylog` - Implemented fallback text extraction for binary files - Enhanced error pattern matching ### 2. Added Live Build Monitoring ✅ - Integrated `xcodebuild` command for real-time error detection - Added project file discovery across common locations - Implemented scheme detection and live building ### 3. Enhanced Console Monitoring ✅ - Expanded process monitoring to include all build tools (swift, clang, ld, etc.) - Added build-specific error pattern detection - Implemented targeted log filtering for build events ### 4. New MCP Tools ✅ - `get_live_build_errors` - Get real-time build errors from console monitoring - Enhanced `get_build_errors` - Now tries live detection first, falls back to logs - Improved error formatting with better icons and timestamps ## Key Improvements ### Xcode Parser (`xcode_parser.py`) - **Live Build Detection**: Uses `xcodebuild` to get current errors - **Project Discovery**: Automatically finds `.xcodeproj`/`.xcworkspace` files - **Binary Log Support**: Properly handles `.xcactivitylog` files - **Enhanced Patterns**: Better regex for Swift, Objective-C, and build errors ### Console Monitor (`console_monitor.py`) - **Build-Focused Monitoring**: Specifically targets build processes - **Extended Process List**: Monitors swift, clang, ld, Metal, etc. - **Build Error Patterns**: Detects compilation, linking, and signing errors - **Real-time Filtering**: Uses macOS log predicates for targeted monitoring ### MCP Server (`xcode_mcp_server.py`) - **New Tool**: `get_live_build_errors` for real-time error detection - **Enhanced Error Detection**: Tries live monitoring first, falls back to logs - **Better Formatting**: Improved error display with timestamps and icons ## Usage ### For Live Build Errors ```python # The MCP server now automatically tries live detection first diagnostics = parser.get_current_diagnostics(project_name) ``` ### For Console Build Monitoring ```python # Start build-focused monitoring monitor.start_build_monitoring(project_name) # Get recent build errors build_errors = monitor.get_build_errors(since_minutes=10) ``` ### New MCP Tool ``` get_live_build_errors(since_minutes=10) ``` ## Testing Run the test script to verify improvements: ```bash python test_build_errors.py ``` ## Expected Results The MCP server should now be able to: 1. ✅ Detect live build errors as they occur in Xcode 2. ✅ Parse binary `.xcactivitylog` files properly 3. ✅ Monitor all Xcode build tools and processes 4. ✅ Provide real-time error detection via console monitoring 5. ✅ Fall back to log file parsing when live detection fails ## Dependencies - `xcrun` command (part of Xcode Command Line Tools) - `xcodebuild` command (part of Xcode) - macOS `log` command for console monitoring