Refactor utils

src/Components/Modules/Flags.cpp

@@ -6,9 +6,15 @@ namespace Components
 
 	bool Flags::HasFlag(const std::string& flag)
 	{
-		Flags::ParseFlags();
+		static auto parsed = false;
 
-		for (auto entry : Flags::EnabledFlags)
+		if (!parsed)
+		{
+			Flags::ParseFlags();
+			parsed = true;
+		}
+
+		for (const auto& entry : Flags::EnabledFlags)
 		{
 			if (Utils::String::ToLower(entry) == Utils::String::ToLower(flag))
 			{
@@ -21,21 +27,20 @@ namespace Components
 
 	void Flags::ParseFlags()
 	{
-		static bool flagsParsed = false;
-		if (flagsParsed) return;
-		flagsParsed = true;
-
 		int numArgs;
-		LPWSTR* argv = CommandLineToArgvW(GetCommandLineW(), &numArgs);
+		auto* const argv = CommandLineToArgvW(GetCommandLineW(), &numArgs);
+
+		assert(Flags::EnabledFlags.empty());
 
 		if (argv)
 		{
-			for (int i = 0; i < numArgs; ++i)
+			for (auto i = 0; i < numArgs; ++i)
 			{
 				std::wstring wFlag(argv[i]);
 				if (wFlag[0] == L'-')
 				{
-					Flags::EnabledFlags.push_back(std::string(++wFlag.begin(), wFlag.end()));
+					wFlag.erase(wFlag.begin());
+					Flags::EnabledFlags.push_back(Utils::String::Convert(wFlag));
 				}
 			}
 
@@ -51,11 +56,5 @@ namespace Components
 
 	Flags::Flags()
 	{
-		Flags::ParseFlags();
-	}
-
-	Flags::~Flags()
-	{
-		Flags::EnabledFlags.clear();
 	}
 }

src/Components/Modules/Flags.hpp

@@ -6,7 +6,6 @@ namespace Components
 	{
 	public:
 		Flags();
-		~Flags();
 
 		static bool HasFlag(const std::string& flag);
 

src/Utils/String.cpp

@@ -103,30 +103,58 @@ namespace Utils
 			return _isspace_l(c, nullptr);
 		}
 
-		// trim from start
-		std::string &LTrim(std::string &s)
+		// Trim from start
+		std::string& LTrim(std::string& str)
 		{
-			s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](int val)
+			str.erase(str.begin(), std::find_if(str.begin(), str.end(), [](int val)
 			{
 				return !IsSpace(val);
 			}));
-			return s;
+
+			return str;
 		}
 
-		// trim from end
-		std::string &RTrim(std::string &s)
+		// Trim from end
+		std::string& RTrim(std::string& str)
 		{
-			s.erase(std::find_if(s.rbegin(), s.rend(), [](int val)
+			str.erase(std::find_if(str.rbegin(), str.rend(), [](int val)
 			{
 				return !IsSpace(val);
-			}).base(), s.end());
-			return s;
+			}).base(), str.end());
+
+			return str;
 		}
 
-		// trim from both ends
-		std::string &Trim(std::string &s)
+		// Trim from both ends
+		std::string& Trim(std::string& str)
 		{
-			return LTrim(RTrim(s));
+			return LTrim(RTrim(str));
+		}
+
+		std::string Convert(const std::wstring& wstr)
+		{
+			std::string result;
+			result.reserve(wstr.size());
+
+			for (const auto& chr : wstr)
+			{
+				result.push_back(static_cast<char>(chr));
+			}
+
+			return result;
+		}
+
+		std::wstring Convert(const std::string& str)
+		{
+			std::wstring result;
+			result.reserve(str.size());
+
+			for (const auto& chr : str)
+			{
+				result.push_back(static_cast<wchar_t>(chr));
+			}
+
+			return result;
 		}
 
 		std::string FormatTimeSpan(int milliseconds)

src/Utils/String.hpp

@@ -79,11 +79,14 @@ namespace Utils
 		std::string ToUpper(std::string input);
 		bool EndsWith(const std::string& haystack, const std::string& needle);
 		std::vector<std::string> Split(const std::string& str, const char delim);
-		void Replace(std::string &string, const std::string& find, const std::string& replace);
+		void Replace(std::string& string, const std::string& find, const std::string& replace);
 		bool StartsWith(const std::string& haystack, const std::string& needle);
-		std::string &LTrim(std::string &s);
-		std::string &RTrim(std::string &s);
-		std::string &Trim(std::string &s);
+		std::string& LTrim(std::string& str);
+		std::string& RTrim(std::string& str);
+		std::string& Trim(std::string& str);
+
+		std::string Convert(const std::wstring& wstr);
+		std::wstring Convert(const std::string& str);
 
 		std::string FormatTimeSpan(int milliseconds);
 		std::string FormatBandwidth(size_t bytes, int milliseconds);