Reorganized and cleaned up the solution.

Source/Common/Utility.cpp

@@ -0,0 +1,97 @@
+#include <algorithm>
+#include <cmath>
+#include <string>
+#include <cstdint>
+#include <winsock2.h>
+#include <ws2tcpip.h>
+#include <windows.h>
+
+#include "Common/Utility.hpp"
+
+int32_t Util::round_up( int32_t numToRound, int32_t multiple )
+{
+	if( multiple == 0 )
+		return numToRound;
+
+	int32_t remainder = abs( numToRound ) % multiple;
+	if( remainder == 0 )
+		return numToRound;
+
+	if( numToRound < 0 )
+		return -( abs( numToRound ) - remainder );
+	else
+		return numToRound + multiple - remainder;
+}
+
+int32_t Util::round_down( int32_t numToRound, int32_t multiple )
+{
+	if( multiple == 0 )
+		return numToRound;
+
+	int32_t remainder = abs( numToRound ) % multiple;
+	if( remainder == 0 )
+		return numToRound;
+
+	if( numToRound < 0 )
+		return -( abs( numToRound ) + remainder );
+	else
+		return numToRound - remainder;
+}
+
+uint16_t Util::ByteSwap( uint16_t val )
+{
+	return ( val << 8 ) | ( val >> 8 );
+}
+
+uint32_t Util::ByteSwap( uint32_t val )
+{
+	return ( ( val << 24 ) & 0xFF000000 ) |
+		( ( val << 8 ) & 0x00FF0000 ) |
+		( ( val >> 8 ) & 0x0000FF00 ) |
+		( ( val >> 24 ) & 0x000000FF );
+}
+
+std::string Util::IPFromAddr( const sockaddr_in &addr )
+{
+	char buffer[ INET_ADDRSTRLEN ] = {};
+	const char *result = inet_ntop( AF_INET, &addr.sin_addr, buffer, sizeof( buffer ) );
+
+	if( result )
+		return std::string( buffer );
+	else
+		return {};
+}
+
+std::string Util::WideToUTF8( const std::wstring &wstr )
+{
+	if( wstr.empty() ) return {};
+
+	int size_needed = WideCharToMultiByte(
+		CP_UTF8, 0, wstr.c_str(), static_cast< int >( wstr.size() ),
+		nullptr, 0, nullptr, nullptr
+	);
+
+	std::string result( size_needed, 0 );
+
+	WideCharToMultiByte(
+		CP_UTF8, 0, wstr.c_str(), static_cast< int >( wstr.size() ),
+		&result[ 0 ], size_needed, nullptr, nullptr
+	);
+
+	return result;
+}
+
+std::wstring Util::UTF8ToWide( const std::string &str )
+{
+	if( str.empty() ) return {};
+	int size_needed = MultiByteToWideChar(
+		CP_UTF8, 0, str.c_str(), static_cast< int >( str.size() ),
+		nullptr, 0
+	);
+	std::wstring result( size_needed, 0 );
+	MultiByteToWideChar(
+		CP_UTF8, 0, str.c_str(), static_cast< int >( str.size() ),
+		&result[ 0 ], size_needed
+	);
+	return result;
+}