first init of 0.9

source/system/shared_wrapper.cpp

@@ -0,0 +1,125 @@
+/*
+ *	Operation System Shared Linkage Library Wrapper Implementation
+ *	Copyright(C) 2003 Jinhao
+ *
+ *	Distributed under the Boost Software License, Version 1.0. 
+ *	(See accompanying file LICENSE_1_0.txt or copy at 
+ *	http://www.boost.org/LICENSE_1_0.txt)
+ *
+ *	@file: nana/system/shared_wrapper.cpp
+ */
+
+#include <nana/system/shared_wrapper.hpp>
+#include <algorithm>
+#include <iterator>
+#ifdef NANA_LINUX
+#include <dlfcn.h>
+#else
+#include <windows.h>
+#endif
+
+namespace nana
+{
+namespace system
+{
+
+	namespace detail
+	{
+		namespace shared_helper
+		{
+
+			module_t open(const char* filename)
+			{
+#ifdef NANA_LINUX
+				return ::dlopen(filename, RTLD_LAZY);
+#else
+				return ::LoadLibraryA(filename);
+#endif
+			}
+
+			void* symbols(module_t handle, const char* symbol)
+			{
+#ifdef NANA_LINUX
+				return ::dlsym(handle, const_cast<char*>(symbol));
+#else
+				return (void*)(::GetProcAddress(reinterpret_cast<HMODULE>(handle), symbol));
+#endif
+			}
+
+			void close(module_t handle)
+			{
+#ifdef NANA_LINUX
+				::dlclose(handle);
+#else
+				::FreeLibrary(reinterpret_cast<HMODULE>(handle));
+#endif
+			}
+		}; //end struct shared_helper
+	}//end namespace detail
+
+
+	shared_wrapper::impl_type::impl_type()
+	{}
+
+	//class shared_wrapper
+	shared_wrapper::shared_wrapper()
+	{}
+
+	shared_wrapper::shared_wrapper(const char* filename)
+		{
+			this->open(filename);
+		}
+
+	shared_wrapper::~shared_wrapper()
+		{
+			this->close();
+		}
+
+	bool shared_wrapper::open(const char* filename)
+		{
+			this->close();
+
+			if(filename)
+			{
+				std::string file;
+				std::string ofn = filename;
+				std::string::size_type length = ofn.length();
+
+				if(length > 13)
+				{
+					std::transform(filename + length - 13, filename + length , std::back_inserter(file), tolower);
+					if(file == ".nana_shared")
+					{
+#ifdef NANA_LINUX
+						ofn.replace(length - 13, 13, ".so");
+#else
+						ofn.replace(length - 13, 13, ".DLL");
+#endif
+						filename = ofn.c_str();
+					}
+				}
+
+				impl_.handle = detail::shared_helper::open(filename);
+			}
+
+			return (impl_.handle != 0);
+		}
+
+	void shared_wrapper::close()
+		{
+			if(impl_.handle)
+			{
+				detail::shared_helper::close(impl_.handle);
+				impl_.symbol = "";
+				impl_.proc_address = 0;
+				impl_.handle = 0;
+			}
+		}
+
+	bool shared_wrapper::empty() const
+		{
+			return (impl_.handle == 0);
+		}
+	//end class shared_wrapper
+}//end namespace system
+}//end namespace nana