Определение параметров текущей ОС во время выполнения

src/myx/core/CMakeLists.txt

@@ -9,6 +9,7 @@ set(TRGT_cpp)
 set(TRGT_hpp
     ${CMAKE_CURRENT_SOURCE_DIR}/config.hpp
     ${CMAKE_CURRENT_SOURCE_DIR}/limits.hpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/current_system.hpp
     ${CMAKE_CURRENT_SOURCE_DIR}/endian_types.hpp
     ${CMAKE_CURRENT_SOURCE_DIR}/enum_bitmask_operations.hpp)
 

src/myx/core/current_system.hpp

@@ -0,0 +1,98 @@
+#ifndef MYX_CORE_CURRENT_SYSTEM_HPP_
+#define MYX_CORE_CURRENT_SYSTEM_HPP_
+
+#pragma once
+
+#include <algorithm>
+#include <limits>
+#include <fstream>
+#include <string>
+
+namespace myx {
+
+namespace core {
+
+class CurrentSystem
+{
+public:
+	CurrentSystem( const CurrentSystem& ) = delete;
+	CurrentSystem& operator=( const CurrentSystem& ) = delete;
+	CurrentSystem( CurrentSystem&& ) = delete;
+	CurrentSystem& operator=( CurrentSystem&& ) = delete;
+
+	/**
+	 * @brief instance
+	 * @return Уникальный экземпляр класса CurrentSystem
+	 */
+	static CurrentSystem& instance()
+	{
+		static CurrentSystem sCurrentSystem;
+		return( sCurrentSystem );
+	}
+
+	std::string os() const { return( m_os ); }
+	std::string distribution() const { return( m_distribution ); }
+	std::string variant() const { return( m_variant ); }
+	std::string version() const { return( m_version ); }
+
+protected:
+	CurrentSystem() :
+		m_os
+		(
+			#if defined( WIN32 ) || defined( _WIN32 ) || defined( __WIN32__ ) || defined( __NT__ )
+			"windows"
+			#elif __linux__
+			"linux"
+			#else
+			#error "Unknown OS"
+			#endif
+		)
+	{
+		std::ifstream file( "/etc/os-release" );
+		if ( file.is_open() )
+		{
+			std::string line;
+			while ( std::getline( file, line ) )
+			{
+				std::size_t pos = line.find( "ID=" );
+				if ( pos == 0 )
+				{
+					m_distribution = line.replace( pos, sizeof( "ID=" ) - 1, "" );
+				}
+
+				pos = line.find( "VARIANT_ID=" );
+				if ( pos != std::string::npos )
+				{
+					m_variant = line.replace( pos, sizeof( "VARIANT_ID=" ) - 1, "" );
+				}
+
+				pos = line.find( "VERSION_ID=" );
+				if ( pos != std::string::npos )
+				{
+					m_version = line.replace( pos, sizeof( "VERSION_ID=" ) - 1, "" );
+					while ( ( pos = m_version.find( '"' ) ) != std::string::npos )
+					{
+						m_version.erase( pos, sizeof( '"' ) );
+					}
+				}
+			}
+			file.close();
+		}
+	}
+
+	~CurrentSystem() = default;
+
+private:
+	std::string m_os;
+	std::string m_distribution;
+	std::string m_variant;
+	std::string m_version;
+}; // class CurrentSystem
+
+// class CurrentSystem
+
+} // namespace core
+
+} // namespace myx
+
+#endif // MYX_CORE_CURRENT_SYSTEM_HPP_