292 lines
		
	
	
		
			8.2 KiB
		
	
	
	
		
			C++
		
	
	
	
			
		
		
	
	
			292 lines
		
	
	
		
			8.2 KiB
		
	
	
	
		
			C++
		
	
	
	
// Copyright (c) 2016-2018 Easy2D - Nomango
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// 
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// 
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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// 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#pragma once
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#include "../macros.h"
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#include "../common/Singleton.hpp"
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#include <ctime>
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#include <iomanip>
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#include <sstream>
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#ifndef E2D_LOG
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#	ifdef E2D_DEBUG
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#		define E2D_LOG(FORMAT, ...) easy2d::Logger::Instance().Messageln((FORMAT), __VA_ARGS__)
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#	else
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#		define E2D_LOG __noop
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#	endif
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#endif
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#ifndef E2D_WARNING_LOG
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#	define E2D_WARNING_LOG(FORMAT, ...) easy2d::Logger::Instance().Warningln((FORMAT), __VA_ARGS__)
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#endif
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#ifndef E2D_ERROR_LOG
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#	define E2D_ERROR_LOG(FORMAT, ...) easy2d::Logger::Instance().Errorln((FORMAT), __VA_ARGS__)
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#endif
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namespace easy2d
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{
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	class E2D_API Logger
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		: public Singleton<Logger>
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	{
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		E2D_DECLARE_SINGLETON(Logger);
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	public:
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		void Enable();
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		void Disable();
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		template <typename ..._Args>
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		void Print(const wchar_t* format, _Args&&... args);
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		template <typename ..._Args>
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		void Println(const wchar_t* format, _Args&&... args);
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		template <typename ..._Args>
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		void Message(const wchar_t * format, _Args&&... args);
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		template <typename ..._Args>
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		void Messageln(const wchar_t * format, _Args&&... args);
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		template <typename ..._Args>
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		void Warning(const wchar_t* format, _Args&&... args);
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		template <typename ..._Args>
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		void Warningln(const wchar_t* format, _Args&&... args);
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		template <typename ..._Args>
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		void Error(const wchar_t* format, _Args&&... args);
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		template <typename ..._Args>
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		void Errorln(const wchar_t* format, _Args&&... args);
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		std::wstreambuf* RedirectOutputStreamBuffer(std::wstreambuf* buf);
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		std::wstreambuf* RedirectErrorStreamBuffer(std::wstreambuf* buf);
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		void ResetOutputStream();
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	private:
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		Logger();
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		template <typename ..._Args>
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		void OutputLine(std::wostream& os, std::wostream&(*color)(std::wostream&), const wchar_t* prompt, const wchar_t* format, _Args&&... args) const;
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		template <typename ..._Args>
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		void Output(std::wostream& os, std::wostream&(*color)(std::wostream&), const wchar_t* prompt, const wchar_t* format, _Args&&... args) const;
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		template <typename ..._Args>
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		std::wstring MakeOutputString(const wchar_t* prompt, const wchar_t* format, _Args&&... args) const;
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		void ResetConsoleColor() const;
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		static std::wostream& DefaultOutputColor(std::wostream& out);
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		static std::wostream& OutPrefix(std::wostream& out);
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	private:
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		bool enabled_;
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		bool has_console_;
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		WORD default_stdout_color_;
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		WORD default_stderr_color_;
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		std::wostream output_stream_;
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		std::wostream error_stream_;
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	};
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	//
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	// details of Logger
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	//
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	namespace __console_colors
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	{
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#define DECLARE_COLOR(COLOR)\
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		extern std::wostream&(stdout_##COLOR)(std::wostream&);\
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		extern std::wostream&(stderr_##COLOR)(std::wostream&);
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#define DECLARE_BG_COLOR(COLOR)\
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		extern std::wostream&(stdout_##COLOR##_bg)(std::wostream&);\
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		extern std::wostream&(stderr_##COLOR##_bg)(std::wostream&);
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		DECLARE_COLOR(red);
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		DECLARE_COLOR(green);
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		DECLARE_COLOR(yellow);
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		DECLARE_COLOR(blue);
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		DECLARE_COLOR(white);
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		DECLARE_COLOR(reset);
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		DECLARE_BG_COLOR(red);
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		DECLARE_BG_COLOR(green);
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		DECLARE_BG_COLOR(yellow);
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		DECLARE_BG_COLOR(blue);
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		DECLARE_BG_COLOR(white);
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#undef DECLARE_COLOR
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#undef DECLARE_BG_COLOR
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	}
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	inline void Logger::Enable()
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	{
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		enabled_ = true;
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	}
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	inline void Logger::Disable()
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	{
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		enabled_ = false;
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	}
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	template <typename ..._Args>
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	inline void Logger::Print(const wchar_t* format, _Args&&... args)
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	{
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		Output(output_stream_, Logger::DefaultOutputColor, nullptr, format, std::forward<_Args>(args)...);
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	}
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	template <typename ..._Args>
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	inline void Logger::Println(const wchar_t* format, _Args&&... args)
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	{
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		OutputLine(output_stream_, Logger::DefaultOutputColor, nullptr, format, std::forward<_Args>(args)...);
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	}
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	template <typename ..._Args>
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	inline void Logger::Message(const wchar_t * format, _Args&&... args)
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	{
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		using namespace __console_colors;
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		Output(output_stream_, stdout_blue, nullptr, format, std::forward<_Args>(args)...);
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	}
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	template <typename ..._Args>
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	inline void Logger::Messageln(const wchar_t * format, _Args&&... args)
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	{
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		using namespace __console_colors;
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		OutputLine(output_stream_, stdout_blue, nullptr, format, std::forward<_Args>(args)...);
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	}
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	template <typename ..._Args>
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	inline void Logger::Warning(const wchar_t* format, _Args&&... args)
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	{
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		using namespace __console_colors;
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		Output(output_stream_, stdout_yellow_bg, L"Warning: ", format, std::forward<_Args>(args)...);
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	}
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	template <typename ..._Args>
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	inline void Logger::Warningln(const wchar_t* format, _Args&&... args)
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	{
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		using namespace __console_colors;
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		OutputLine(output_stream_, stdout_yellow_bg, L"Warning: ", format, std::forward<_Args>(args)...);
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	}
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	template <typename ..._Args>
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	inline void Logger::Error(const wchar_t* format, _Args&&... args)
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	{
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		using namespace __console_colors;
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		Output(error_stream_, stderr_red_bg, L"Error: ", format, std::forward<_Args>(args)...);
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	}
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	template <typename ..._Args>
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	inline void Logger::Errorln(const wchar_t* format, _Args&&... args)
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	{
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		using namespace __console_colors;
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		OutputLine(error_stream_, stderr_red_bg, L"Error: ", format, std::forward<_Args>(args)...);
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	}
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	template <typename ..._Args>
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	inline void Logger::OutputLine(std::wostream& os, std::wostream&(*color)(std::wostream&), const wchar_t* prompt, const wchar_t* format, _Args&&... args) const
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	{
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		if (enabled_ && has_console_)
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		{
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			Output(os, color, prompt, format, std::forward<_Args>(args)...);
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			os << std::endl;
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			::OutputDebugStringW(L"\r\n");
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		}
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	}
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	template <typename ..._Args>
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	inline void Logger::Output(std::wostream& os, std::wostream&(*color)(std::wostream&), const wchar_t* prompt, const wchar_t* format, _Args&&... args) const
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	{
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		if (enabled_ && has_console_)
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		{
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			std::wstring output = MakeOutputString(prompt, format, std::forward<_Args>(args)...);
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			os << color << output;
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			::OutputDebugStringW(output.c_str());
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			ResetConsoleColor();
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		}
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	}
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	template <typename ..._Args>
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	inline std::wstring Logger::MakeOutputString(const wchar_t* prompt, const wchar_t* format, _Args&&... args) const
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	{
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		static wchar_t temp_buffer[1024 * 3 + 1];
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		const auto len = ::_scwprintf(format, std::forward<_Args>(args)...);
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		::swprintf_s(temp_buffer, len + 1, format, std::forward<_Args>(args)...);
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		std::wstringstream ss;
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		ss << Logger::OutPrefix;
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		if (prompt)
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			ss << prompt;
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		ss << temp_buffer;
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		return ss.str();
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	}
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	inline void Logger::ResetConsoleColor() const
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	{
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		::SetConsoleTextAttribute(::GetStdHandle(STD_OUTPUT_HANDLE), default_stdout_color_);
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		::SetConsoleTextAttribute(::GetStdHandle(STD_ERROR_HANDLE), default_stderr_color_);
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	}
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	inline std::wostream& Logger::DefaultOutputColor(std::wostream& out)
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	{
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		::SetConsoleTextAttribute(::GetStdHandle(STD_OUTPUT_HANDLE), Logger::Instance().default_stdout_color_);
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		return out;
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	}
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	inline std::wostream& Logger::OutPrefix(std::wostream& out)
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	{
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		std::time_t unix = std::time(nullptr);
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		std::tm tmbuf;
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		localtime_s(&tmbuf, &unix);
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		out << std::put_time(&tmbuf, L"[easy2d] %H:%M:%S ");
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		return out;
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	}
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}
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namespace easy2d
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{
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	inline void ThrowIfFailed(HRESULT hr)
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	{
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		if (FAILED(hr))
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		{
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			E2D_ERROR_LOG(L"Fatal error with HRESULT of %08X", hr);
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			static char buffer[1024 + 1];
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			sprintf_s(buffer, "Fatal error with HRESULT of %08X", hr);
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			throw std::runtime_error(buffer);
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		}
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	}
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}
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