filepath: Added clear and isEmpty methods.

include/bx/filepath.h

@@ -56,6 +56,9 @@ namespace bx
 		///
 		FilePath& operator=(const StringView& _rhs);
 
+		///
+		void clear();
+
 		///
 		void set(Dir::Enum _dir);
 
@@ -87,6 +90,9 @@ namespace bx
 		///
 		bool isAbsolute() const;
 
+		///
+		bool isEmpty() const;
+
 	private:
 		char m_filePath[kMaxFilePath];
 	};

src/filepath.cpp

@@ -275,6 +275,14 @@ namespace bx
 		return *this;
 	}
 
+	void FilePath::clear()
+	{
+		if (!isEmpty() )
+		{
+			set("");
+		}
+	}
+
 	void FilePath::set(Dir::Enum _dir)
 	{
 		char tmp[kMaxFilePath];
@@ -384,6 +392,11 @@ namespace bx
 			;
 	}
 
+	bool FilePath::isEmpty() const
+	{
+		return 0 == strCmp(m_filePath, ".");
+	}
+
 	bool make(const FilePath& _filePath, Error* _err)
 	{
 		BX_ERROR_SCOPE(_err);