Let us start here, from square one. No, from Zero!

util/lz77.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <vector>
+#include <cstdint>
+
+namespace util::lz77 {
+
+    uint8_t *compress_stub(uint8_t *input, size_t input_length, size_t *compressed_length);
+    std::vector<uint8_t> compress(uint8_t *input, size_t input_length);
+    std::vector<uint8_t> decompress(uint8_t *input, size_t input_length);
+}