Basic parsing for Archive II file

wxdata/include/scwx/util/rangebuf.hpp

@@ -0,0 +1,29 @@
+#pragma once
+
+#include <streambuf>
+#include <vector>
+
+namespace scwx
+{
+namespace util
+{
+
+class rangebuf : public std::streambuf
+{
+public:
+   rangebuf(std::streambuf* sbuf, size_t size);
+   ~rangebuf() = default;
+
+   rangebuf(const rangebuf&) = delete;
+   rangebuf& operator=(const rangebuf&) = delete;
+
+   int underflow() override;
+
+private:
+   size_t            size_;
+   std::streambuf*   sbuf_;
+   std::vector<char> data_;
+};
+
+} // namespace util
+} // namespace scwx