source/System/File.cpp: move path stuff to Path.cpp

source/System/Path.cpp

@@ -0,0 +1,24 @@
+
+#include <Spectre/System/Path.h>
+
+namespace sp {
+
+std::string Path::getBasename(const std::string& path)
+{
+	size_t p = path.find_last_of('/');
+
+	if (p == std::string::npos)
+		return path;
+	return path.substr(p + 1);
+}
+
+std::string Path::getExtension(const std::string& path)
+{
+	std::string base_name = getBasename(path);
+	size_t p = base_name.find_first_of('.');
+	if (p == std::string::npos)
+		return "";
+	return base_name.substr(p + 1);
+}
+
+} // namespace sp