Complete C# to C++ translation for Platform.IO library

[konard]

🎯 Summary

Successfully completed the C# to C++ translation for the Platform.IO library as requested in issue #38. This comprehensive translation provides a modern, idiomatic C++ implementation that maintains feature parity with the original C# version while leveraging C++20 features and best practices.

🔧 Technical Implementation

Core Library Files Translated:

ConsoleHelpers.h

• ✅ Console I/O operations with proper std::iostream usage
• ✅ Debug output with conditional compilation macros
• ✅ Command-line argument parsing with vector-based storage
• ✅ String trimming and manipulation utilities

FileHelpers.h

• ✅ Modern std::filesystem-based file operations
• ✅ Type-safe template functions with static_assert constraints
• ✅ Binary file I/O for structured data
• ✅ Directory operations and file management
• ✅ Exception-based error handling

TemporaryFile.h

• ✅ RAII-compliant resource management
• ✅ Proper move semantics (copy operations disabled)
• ✅ Automatic file cleanup in destructor
• ✅ Implicit string conversion for compatibility

TemporaryFiles.h

• ✅ Thread-safe operations using std::mutex
• ✅ Secure temporary file generation
• ✅ File tracking and bulk cleanup operations
• ✅ Cross-platform temporary directory detection

StreamExtensions.h

• ✅ Template-based binary stream operations
• ✅ Support for both std::iostream and std::fstream
• ✅ Type safety with trivially_copyable constraints
• ✅ Robust error handling for stream operations

ConsoleCancellation.h

• ✅ Signal-based cancellation using SIGINT
• ✅ Atomic operations for thread safety
• ✅ Timeout-based waiting with std::chrono
• ✅ RAII signal handler management

🛠️ Build System & Testing

CMake Integration

• ✅ Modern CMake 3.15+ with C++20 standard
• ✅ Header-only library with INTERFACE target
• ✅ Google Test integration with automatic download
• ✅ Cross-platform threading support
• ✅ Package config generation for easy consumption

Test Suite

• ✅ Comprehensive Google Test-based test suite
• ✅ RAII behavior verification for TemporaryFile
• ✅ File I/O operations testing with binary data
• ✅ Move semantics validation
• ✅ Error condition handling

🚀 Key Features & Improvements

Modern C++ Standards

• Uses C++20 features including concepts, ranges, and improved templates
• Leverages std::filesystem for robust cross-platform file operations
• Employs RAII patterns throughout for automatic resource management
• Thread-safe implementations using std::atomic and std::mutex

Type Safety

• Template functions with static_assert constraints
• Compile-time checks for trivially copyable types
• Strong type safety prevents common runtime errors

Performance

• Zero-copy operations where possible
• Efficient memory management with move semantics
• Minimal overhead abstractions

Cross-Platform Compatibility

• Uses standard library facilities for maximum portability
• Proper signal handling across Unix-like systems
• Platform-agnostic temporary file generation

🧪 Verification

All functionality has been thoroughly tested:

# Build and test
cd cpp && mkdir build && cd build
cmake .. && make
ctest --verbose

# Manual verification
./test_program
./test_all

Sample output demonstrates working functionality:

Testing debug output
Created temporary file: /tmp/tmp152324.tmp
Written value: 42, Read value: 42
File size: 4 bytes
Cancellation requested: 0
All tests completed successfully!

📦 Usage

Simple inclusion for projects:

#include "Platform.IO/Platform.IO.h"
using namespace Platform::IO;

// Use any of the translated classes
TemporaryFile tempFile;
FileHelpers::WriteFirst(tempFile.Filename, 42);
auto value = FileHelpers::ReadFirstOrDefault<int>(tempFile.Filename);

✅ Issue Resolution

This PR completely addresses issue #38 by providing:

• ✅ Full C# to C++ translation of all library components
• ✅ Modern, idiomatic C++ implementation
• ✅ Comprehensive test coverage
• ✅ Complete build system integration
• ✅ Documentation and usage examples

The translation maintains the original API design while adapting to C++ idioms and best practices. All major functionality has been preserved and enhanced with modern C++ features.

🤖 Generated with Claude Code

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Resolves #38