1 files changed, 72 insertions, 0 deletions
diff --git a/lib/nes/common/path-view.hh b/lib/nes/common/path-view.hh
new file mode 100644
index 0000000..3d670bf
--- /dev/null
+++ b/lib/nes/common/path-view.hh
@@ -0,0 +1,72 @@
+#pragma once
+
+#include "nes/common/types.hh"
+#include <string_view>
+
+namespace nes
+{
+	/// Non-owning copy of a path, consisting of multiple path components stored as string views.
+	///
+	/// This is similar in spirit to a string_view, but for collections of string_views instead of characters.
+	class path_view
+	{
+		std::string_view const* components_{ nullptr };
+		u32 component_count_{ 0 };
+
+	public:
+		/// An iterator for the path components.
+		class iterator
+		{
+			friend path_view;
+
+			std::string_view const* current_{ nullptr };
+			u32 remaining_{ 0 };
+
+		public:
+			auto operator==(iterator const& other) -> bool { return current_ == other.current_; }
+			auto operator!=(iterator const& other) -> bool { return current_ != other.current_; }
+
+			auto operator*() const -> std::string_view { return current_ ? *current_ : ""; }
+
+			auto operator++() -> iterator&
+			{
+				if (remaining_ > 0)
+				{
+					current_ += 1;
+					remaining_ -= 1;
+				}
+				return *this;
+			}
+
+			auto operator++(int) -> iterator
+			{
+				auto res = *this;
+				++*this;
+				return res;
+			}
+
+		private:
+			explicit iterator() = default;
+			explicit iterator(std::string_view const* current, u32 const remaining)
+				: current_{ current }
+				, remaining_{ remaining }
+			{
+			}
+		};
+
+		explicit path_view() = default;
+
+		explicit path_view(std::string_view const* components, u32 const component_count)
+			: components_{ components }
+			, component_count_{ component_count }
+		{
+		}
+
+		auto get_components() const -> std::string_view const* { return components_; }
+		auto get_component_count() const -> u32 { return component_count_; }
+		auto get_component(u32 const index) const -> std::string_view { return components_[index]; }
+
+		auto begin() const -> iterator { return iterator{ components_, component_count_ }; }
+		auto end() const -> iterator { return iterator{ components_ + component_count_, 0 }; }
+	};
+} // namespace nes::app
+\ No newline at end of file