Определение параметров текущей ОС во время выполнения

examples/core/02_current-system/CMakeLists.txt

@@ -0,0 +1,51 @@
+# Название основной цели в текущем каталоге
+set(TRGT example-core-current-system)
+
+# Список файлов исходных текстов
+set(TRGT_cpp ${CMAKE_CURRENT_SOURCE_DIR}/current_system.cpp)
+
+if(MYXLIB_BUILD_EXAMPLES)
+  # Путь поиска библиотек внутри проекта
+  link_directories(${CMAKE_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR})
+
+  # Цель для создания исполняемого файла
+  add_executable(${TRGT} ${TRGT_cpp} ${TRGT_qrc})
+  common_target_properties(${TRGT})
+
+  # Создание цели для проверки утилитой clang-tidy
+  add_clang_tidy_check(${TRGT} ${TRGT_cpp})
+
+  # Создание цели для проверки утилитой clang-analyze
+  add_clang_analyze_check(${TRGT} ${TRGT_cpp})
+
+  # Создание цели для проверки утилитой clazy
+  add_clazy_check(${TRGT} ${TRGT_cpp})
+
+  # Создание цели для проверки утилитой pvs-studio
+  add_pvs_check(${TRGT})
+
+  # Создание цели для автоматического форматирования кода
+  add_format_sources(${TRGT} ${TRGT_cpp})
+
+  # Qt5
+  target_include_directories(${TRGT} PRIVATE ${CMAKE_SOURCE_DIR}/src)
+  target_include_directories(${TRGT} SYSTEM PUBLIC ${Qt5Core_INCLUDE_DIRS})
+
+  target_include_directories(${TRGT} SYSTEM PRIVATE ${CMAKE_SOURCE_DIR}/src)
+  add_dependencies(${TRGT} core)
+
+  target_link_libraries(${TRGT} Qt5::Core)
+  target_link_libraries(${TRGT} Threads::Threads)
+
+  # Имя выходного файла для цели
+  set_target_properties(${TRGT} PROPERTIES OUTPUT_NAME current-system-minimal)
+
+  add_sanitizers(${TRGT})
+
+  cotire(${TRGT})
+
+  add_dependencies(${TRGT} create_auxilary_symlinks)
+
+  # Правила для установки
+  # install(TARGETS ${TRGT} COMPONENT examples RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+endif()

examples/core/02_current-system/current_system.cpp

@@ -0,0 +1,23 @@
+#include <myx/core/config.hpp>
+#include <myx/core/current_system.hpp>
+
+#include <QDebug>
+
+//NOLINTNEXTLINE
+#define CMLIB_PROJECT_NAME "myxlib"
+
+namespace MC = myx::core;
+
+int main( int argc, char** argv )
+{
+	(void)argc;
+	(void)argv;
+
+	MC::CurrentSystem& currentSystem = MC::CurrentSystem::instance();
+	qDebug() << "Current OS: " << QString::fromStdString( currentSystem.os() );
+	qDebug() << "OS distrib: " << QString::fromStdString( currentSystem.distribution() );
+	qDebug() << "OS variant: " << QString::fromStdString( currentSystem.variant() );
+	qDebug() << "OS version: " << QString::fromStdString( currentSystem.version() );
+
+	return( 0 );
+} // main

examples/core/CMakeLists.txt

@@ -1 +1,2 @@
 add_subdirectory(01_endian)
+add_subdirectory(02_current-system)

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_