clean up path logic a bit

1 files changed, 38 insertions, 0 deletions

diff --git a/lib/nes/common/path-builder.hh b/lib/nes/common/path-builder.hh
new file mode 100644
index 0000000..727d18c
--- /dev/null
+++ b/lib/nes/common/path-builder.hh
@@ -0,0 +1,38 @@
+#pragma once
+
+#include "nes/common/types.hh"
+#include "nes/common/path-view.hh"
+#include <string_view>
+
+namespace nes
+{
+	/// A mutable path with a fixed-length buffer.
+	class path_builder
+	{
+		char* buffer_{ nullptr };
+		u32 buffer_length_{ 0 };
+		u32 actual_length_{ 0 };
+
+	public:
+		explicit path_builder(char* buffer, u32 buffer_length);
+
+		auto get_components() const -> path_view { return path_view{ get_path() }; }
+		auto get_path() const -> std::string_view { return std::string_view{ buffer_, actual_length_ }; }
+
+		auto push(std::string_view) -> bool;
+		auto pop() -> bool;
+	};
+
+	/// A path builder with a buffer embedded into it.
+	template<u32 Capacity>
+	class path_buffer : public path_builder
+	{
+		char buffer_[Capacity];
+
+	public:
+		explicit path_buffer()
+			: path_builder{ buffer_, Capacity }
+		{
+		}
+	};
+} // namespace nes
\ No newline at end of file