350 lines
		
	
	
		
			8.8 KiB
		
	
	
	
		
			C++
		
	
	
	
			
		
		
	
	
			350 lines
		
	
	
		
			8.8 KiB
		
	
	
	
		
			C++
		
	
	
	
// Copyright (c) 2016-2018 Kiwano - 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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#include "logs.h"
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#include <iostream>
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#include <fstream>
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namespace
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{
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	std::streambuf* cin_buffer, * cout_buffer, * cerr_buffer;
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	std::fstream console_input, console_output, console_error;
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	std::wstreambuf* wcin_buffer, * wcout_buffer, * wcerr_buffer;
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	std::wfstream wconsole_input, wconsole_output, wconsole_error;
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	void RedirectStdIO()
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	{
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		cin_buffer = std::cin.rdbuf();
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		cout_buffer = std::cout.rdbuf();
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		cerr_buffer = std::cerr.rdbuf();
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		wcin_buffer = std::wcin.rdbuf();
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		wcout_buffer = std::wcout.rdbuf();
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		wcerr_buffer = std::wcerr.rdbuf();
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		console_input.open("CONIN$", std::ios::in);
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		console_output.open("CONOUT$", std::ios::out);
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		console_error.open("CONOUT$", std::ios::out);
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		wconsole_input.open("CONIN$", std::ios::in);
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		wconsole_output.open("CONOUT$", std::ios::out);
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		wconsole_error.open("CONOUT$", std::ios::out);
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		FILE* dummy;
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		freopen_s(&dummy, "CONOUT$", "w+t", stdout);
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		freopen_s(&dummy, "CONIN$", "r+t", stdin);
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		freopen_s(&dummy, "CONOUT$", "w+t", stderr);
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		(void)dummy;
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		std::cin.rdbuf(console_input.rdbuf());
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		std::cout.rdbuf(console_output.rdbuf());
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		std::cerr.rdbuf(console_error.rdbuf());
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		std::wcin.rdbuf(wconsole_input.rdbuf());
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		std::wcout.rdbuf(wconsole_output.rdbuf());
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		std::wcerr.rdbuf(wconsole_error.rdbuf());
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	}
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	void ResetStdIO()
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	{
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		console_input.close();
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		console_output.close();
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		console_error.close();
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		wconsole_input.close();
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		wconsole_output.close();
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		wconsole_error.close();
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		std::cin.rdbuf(cin_buffer);
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		std::cout.rdbuf(cout_buffer);
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		std::cerr.rdbuf(cerr_buffer);
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		std::wcin.rdbuf(wcin_buffer);
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		std::wcout.rdbuf(wcout_buffer);
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		std::wcerr.rdbuf(wcerr_buffer);
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		fclose(stdout);
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		fclose(stdin);
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		fclose(stderr);
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		cin_buffer = nullptr;
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		cout_buffer = nullptr;
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		cerr_buffer = nullptr;
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		wcin_buffer = nullptr;
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		wcout_buffer = nullptr;
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		wcerr_buffer = nullptr;
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	}
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	HWND allocated_console = nullptr;
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	HWND AllocateConsole()
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	{
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		if (::AllocConsole())
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		{
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			allocated_console = ::GetConsoleWindow();
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			if (allocated_console)
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			{
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				RedirectStdIO();
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			}
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		}
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		return allocated_console;
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	}
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	void FreeAllocatedConsole()
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	{
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		if (allocated_console)
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		{
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			ResetStdIO();
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			::FreeConsole();
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			allocated_console = nullptr;
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		}
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	}
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	HWND GetAllocatedConsole()
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	{
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		return allocated_console;
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	}
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}
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namespace kiwano
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{
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	namespace __console_colors
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	{
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		const WORD _blue = FOREGROUND_BLUE | FOREGROUND_INTENSITY;
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		const WORD _green = FOREGROUND_GREEN | FOREGROUND_INTENSITY;
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		const WORD _red = FOREGROUND_RED | FOREGROUND_INTENSITY;
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		const WORD _yellow = FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY;
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		const WORD _white = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY;
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		const WORD _blue_bg = _white | BACKGROUND_BLUE | BACKGROUND_INTENSITY;
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		const WORD _green_bg = _white | BACKGROUND_GREEN | BACKGROUND_INTENSITY;
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		const WORD _red_bg = _white | BACKGROUND_RED | BACKGROUND_INTENSITY;
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		const WORD _yellow_bg = BACKGROUND_GREEN | BACKGROUND_RED | BACKGROUND_INTENSITY;
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		const WORD _white_bg = BACKGROUND_BLUE | BACKGROUND_GREEN | BACKGROUND_RED | BACKGROUND_INTENSITY;
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		const WORD _reset = _white;
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#define DECLARE_HANDLE_COLOR(NAME, HANDLE_NAME, COLOR)\
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	inline std::wostream& (NAME)(std::wostream& _out)\
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		{ ::SetConsoleTextAttribute(::GetStdHandle(HANDLE_NAME), _##COLOR); return _out; }
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#define DECLARE_COLOR(COLOR) \
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	DECLARE_HANDLE_COLOR(stdout_##COLOR, STD_OUTPUT_HANDLE, COLOR)\
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	DECLARE_HANDLE_COLOR(stderr_##COLOR, STD_ERROR_HANDLE, COLOR)
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#define DECLARE_BG_COLOR(COLOR) \
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	DECLARE_HANDLE_COLOR(stdout_##COLOR##_bg, STD_OUTPUT_HANDLE, COLOR##_bg)\
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	DECLARE_HANDLE_COLOR(stderr_##COLOR##_bg, STD_ERROR_HANDLE, COLOR##_bg)
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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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	Logger::Logger()
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		: enabled_(true)
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		, default_stdout_color_(0)
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		, default_stderr_color_(0)
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		, output_stream_(std::wcout.rdbuf())
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		, error_stream_(std::wcerr.rdbuf())
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	{
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		ResetOutputStream();
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	}
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	Logger::~Logger()
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	{
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		FreeAllocatedConsole();
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	}
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	void Logger::ResetOutputStream()
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	{
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		bool has_console = ::GetConsoleWindow() != nullptr;
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		if (has_console)
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		{
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			default_stdout_color_ = default_stderr_color_ = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY;
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			CONSOLE_SCREEN_BUFFER_INFO stdout_info;
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			if (::GetConsoleScreenBufferInfo(::GetStdHandle(STD_OUTPUT_HANDLE), &stdout_info))
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			{
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				default_stdout_color_ = stdout_info.wAttributes;
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			}
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			CONSOLE_SCREEN_BUFFER_INFO stderr_info;
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			if (::GetConsoleScreenBufferInfo(::GetStdHandle(STD_ERROR_HANDLE), &stderr_info))
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			{
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				default_stderr_color_ = stderr_info.wAttributes;
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			}
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			RedirectOutputStreamBuffer(std::wcout.rdbuf());
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			RedirectErrorStreamBuffer(std::wcerr.rdbuf());
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		}
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	}
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	std::wstreambuf* Logger::RedirectOutputStreamBuffer(std::wstreambuf* buf)
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	{
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		return output_stream_.rdbuf(buf);
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	}
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	std::wstreambuf* Logger::RedirectErrorStreamBuffer(std::wstreambuf* buf)
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	{
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		return error_stream_.rdbuf(buf);
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	}
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	void Logger::Printf(const wchar_t* format, ...)
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	{
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		va_list args = nullptr;
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		va_start(args, format);
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		Outputf(output_stream_, Logger::DefaultOutputColor, nullptr, format, args);
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		va_end(args);
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	}
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	void Logger::Messagef(const wchar_t* format, ...)
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	{
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		using namespace __console_colors;
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		va_list args = nullptr;
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		va_start(args, format);
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		Outputf(output_stream_, stdout_blue, nullptr, format, args);
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		va_end(args);
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	}
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	void Logger::Warningf(const wchar_t* format, ...)
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	{
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		using namespace __console_colors;
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		va_list args = nullptr;
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		va_start(args, format);
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		Outputf(output_stream_, stdout_yellow_bg, L" Warning:", format, args);
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		va_end(args);
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	}
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	void Logger::Errorf(const wchar_t* format, ...)
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	{
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		using namespace __console_colors;
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		va_list args = nullptr;
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		va_start(args, format);
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		Outputf(error_stream_, stderr_red_bg, L" Error:", format, args);
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		va_end(args);
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	}
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	void Logger::Outputf(std::wostream& os, std::wostream& (*color)(std::wostream&), const wchar_t* prompt, const wchar_t* format, va_list args) const
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	{
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		if (enabled_)
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		{
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			std::wstring output = MakeOutputStringf(prompt, format, args);
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			os << color << output << std::flush;
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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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	std::wstring Logger::MakeOutputStringf(const wchar_t* prompt, const wchar_t* format, va_list args) const
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	{
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		static wchar_t temp_buffer[1024 * 3 + 1];
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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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		if (format)
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		{
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			const auto len = ::_vscwprintf(format, args) + 1;
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			::_vsnwprintf_s(temp_buffer, len, len, format, args);
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			ss << ' ' << temp_buffer;
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		}
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		return ss.str();
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	}
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	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"[kiwano] %H:%M:%S");
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		return out;
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	}
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	void Logger::ShowConsole(bool show)
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	{
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		HWND current_console = ::GetConsoleWindow();
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		if (show)
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		{
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			if (current_console)
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			{
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				::ShowWindow(current_console, SW_SHOW);
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			}
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			else
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			{
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				HWND console = ::AllocateConsole();
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				if (!console)
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				{
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					KGE_WARNING_LOG(L"AllocConsole failed");
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				}
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				else
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				{
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					// disable the close button of console
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					HMENU hmenu = ::GetSystemMenu(console, FALSE);
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					::RemoveMenu(hmenu, SC_CLOSE, MF_BYCOMMAND);
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				}
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			}
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		}
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		else
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		{
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			if (current_console)
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			{
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				if (current_console == GetAllocatedConsole())
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				{
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					FreeAllocatedConsole();
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				}
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				else
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				{
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					::ShowWindow(current_console, SW_HIDE);
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				}
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			}
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		}
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		ResetOutputStream();
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	}
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}
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