initial import, >900commits predate this

framework/filesystem/src/mm/path_utils.hpp

@@ -0,0 +1,49 @@
+#pragma once
+
+// TODO: test
+
+#include <mm/string_view_split.hpp>
+
+// TODO: make proper namespace
+namespace MM {
+
+// removes './'s and resolves '../'
+// returns false if too many ..
+inline bool path_shorten(std::string& path) {
+	auto splits = std_utils::split(path, "/");
+	std::vector<std::string_view> new_splits;
+
+	for (size_t i = 0; i < splits.size(); i++) {
+		if (splits[i] == "..") {
+			if (new_splits.empty())
+				return false;
+
+			new_splits.pop_back();
+		} else if (splits[i] == ".") {
+			// skip
+		} else {
+			new_splits.emplace_back(splits[i]);
+		}
+	}
+
+	std::string new_path;
+	for (auto& s : new_splits) {
+		new_path += "/";
+		new_path += s;
+	}
+	path = new_path;
+
+	return true;
+}
+
+// remove the file name from the path
+inline std::string base_path(std::string_view path) {
+	auto pos = path.find_last_of("/");
+	if (pos == path.npos)
+		return std::string(path); // TODO: make sure there is a '/'
+
+	return std::string(path.substr(0, pos+1));
+}
+
+} // MM
+