inital commit (message v3)

solanaceae/message3/file.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include <cstdint>
+#include <vector>
+
+struct FileI {
+	uint64_t _file_size {0};
+	// TODO: remove?
+	uint64_t _bytes_read {0};
+	uint64_t _bytes_written {0};
+
+	virtual ~FileI(void) {}
+
+	virtual bool isGood(void) = 0;
+
+	// TODO: move to owning/nonowning pointers
+	virtual std::vector<uint8_t> read(uint64_t pos, uint32_t size) = 0;
+	virtual bool write(uint64_t pos, const std::vector<uint8_t>& data) = 0;
+};
+