add file interface

include/sp/io/FileIO.h

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <fstream>
+#include <sp/io/IOInterface.h>
+
+namespace sp {
+
+struct FileTag {};
+
+template <>
+class IOInterface<FileTag> {
+  private:
+	std::ofstream m_FileOutput;
+	std::ifstream m_FileInput;
+
+  public:
+	IOInterface(const std::string& filePath) : m_FileOutput(filePath), m_FileInput(filePath) {}
+	IOInterface(IOInterface&& other) : m_FileOutput(std::move(other.m_FileOutput)), m_FileInput(std::move(other.m_FileInput)) {}
+
+	DataBuffer Read(std::size_t a_Amount) {
+		DataBuffer buffer;
+		buffer.Resize(a_Amount);
+		m_FileInput.read(reinterpret_cast<char*>(buffer.data()), a_Amount);
+		return buffer;
+	}
+
+	void Write(const sp::DataBuffer& a_Data) {
+		m_FileOutput.write(reinterpret_cast<const char*>(a_Data.data()), a_Data.GetSize());
+		m_FileOutput.flush();
+	}
+};
+
+using FileIO = IOInterface<FileTag>;
+
+}  // namespace sp