3 files changed, 138 insertions, 0 deletions
diff --git a/common/Logger.h b/common/Logger.h
new file mode 100644
index 0000000..324b71e
--- /dev/null
+++ b/common/Logger.h
@@ -0,0 +1,25 @@
+#pragma once
+
+namespace nv
+{
+	enum struct LogSeverity
+	{
+		kInfo = 0, // Message contains information about normal and expected behavior
+		kWarning = 1, // Message contains information about a potentially problematic situation
+		kError = 2, // Message contains information about a problem
+		kFatal = 3 // Message contains information about a fatal problem; program should be aborted
+	};
+
+	static const char * LogSeverityStrings[] = { "INFO", "WARNING", "ERROR", "FATAL" };
+
+
+	// Note: Implementation of this interface must be thread-safe
+	class ILogger
+	{
+	public:
+		// �filename� is NULL and �linenumber� is 0 in release builds of GameWorks	
+		virtual void log(const char* text, LogSeverity severity, const char* filename, int linenumber) = 0;
+		virtual void log(const wchar_t* text, LogSeverity severity, const wchar_t* filename, int linenumber) = 0;
+	};
+}
+
diff --git a/common/LoggerImpl.cpp b/common/LoggerImpl.cpp
new file mode 100644
index 0000000..9a2921d
--- /dev/null
+++ b/common/LoggerImpl.cpp
@@ -0,0 +1,46 @@
+#include "LoggerImpl.h"
+#include <iostream>
+#include <sstream>
+#include <windows.h>
+
+LoggerWWSamples* g_Logger = nullptr;
+
+LoggerWWSamples::LoggerWWSamples():
+LoggingLevel(nv::LogSeverity::kInfo)
+{
+
+}
+
+LoggerWWSamples::LoggerWWSamples(nv::LogSeverity loggingLevel) :
+	LoggingLevel(loggingLevel)
+{
+
+}
+
+nv::LogSeverity LoggerWWSamples::getLoggingLevel()
+{
+	return LoggingLevel;
+}
+
+void LoggerWWSamples::setLoggingLevel(nv::LogSeverity newLevel)
+{
+	LoggingLevel = newLevel;
+}
+
+void LoggerWWSamples::log(const char* text, nv::LogSeverity severity, const char* filename, int linenumber)
+{
+	std::ostringstream out;
+
+	out << filename << "(" << linenumber << "): " << "[" << nv::LogSeverityStrings[(int) severity] << "] " << text << std::endl;
+
+	OutputDebugStringA(out.str().c_str());
+}
+
+void LoggerWWSamples::log(const wchar_t* text, nv::LogSeverity severity, const wchar_t* filename, int linenumber)
+{
+	std::wstringstream out;
+
+	out << filename << "(" << linenumber << "): " << "[" << nv::LogSeverityStrings[(int)severity] << "] " << text << std::endl;
+
+	OutputDebugStringW(out.str().c_str());
+}
diff --git a/common/LoggerImpl.h b/common/LoggerImpl.h
new file mode 100644
index 0000000..a07cead
--- /dev/null
+++ b/common/LoggerImpl.h
@@ -0,0 +1,67 @@
+#pragma once
+#include "Logger.h"
+#include <cstdarg>
+#include <cstdio>
+
+class LoggerWWSamples : public nv::ILogger
+{
+public:
+	LoggerWWSamples();
+	LoggerWWSamples(nv::LogSeverity loggingLevel);
+	virtual ~LoggerWWSamples() = default;
+
+	virtual void log(const char* text, nv::LogSeverity severity, const char* filename, int linenumber) override;
+	virtual void log(const wchar_t* text, nv::LogSeverity severity, const wchar_t* filename, int linenumber) override;
+
+	nv::LogSeverity getLoggingLevel();
+	void setLoggingLevel(nv::LogSeverity newLevel);
+
+private:
+	nv::LogSeverity	LoggingLevel;
+};
+
+extern LoggerWWSamples* g_Logger;
+
+namespace wwsamples
+{
+	inline void log(nv::LogSeverity severity, const char* filename, int linenumber, const char* format, ...)
+	{
+		if (g_Logger == nullptr)
+		{
+			g_Logger = new LoggerWWSamples();
+		}
+
+		if (g_Logger->getLoggingLevel() > severity)
+			return;
+
+		char buffer[1024];
+
+		va_list args;
+		va_start(args, format);
+#if NV_GCC_FAMILY
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"
+#endif
+		vsnprintf_s(buffer, sizeof(buffer), format, args);
+#if NV_GCC_FAMILY
+#pragma GCC diagnostic pop
+#endif
+		va_end(args);
+
+		g_Logger->log(buffer, severity, filename, linenumber);
+	}
+}
+
+
+
+#ifndef NV_LOG
+/// <param name="__VA_ARGS__">format, ...</param>
+#define NV_LOG(...) wwsamples::log(nv::LogSeverity::kInfo, __FILE__, __LINE__, __VA_ARGS__)
+/// <param name="__VA_ARGS__">format, ...</param>
+#define NV_WARN(...) wwsamples::log(nv::LogSeverity::kWarning, __FILE__, __LINE__, __VA_ARGS__)
+/// <param name="__VA_ARGS__">format, ...</param>
+#define NV_ERROR(...) wwsamples::log(nv::LogSeverity::kError, __FILE__, __LINE__, __VA_ARGS__)
+/// <param name="__VA_ARGS__">format, ...</param>
+#define NV_FATAL(...) wwsamples::log(nv::LogSeverity::kFatal, __FILE__, __LINE__, __VA_ARGS__)
+
+#endif
+\ No newline at end of file