Util: Add file class

src/util/file.cpp

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2021 Riyyi
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <cassert> // assert
+#include <cstdint> // int32_t
+#include <fstream> // ifstream, ios, ofstream
+#include <memory>  // make_unique
+#include <string>
+
+#include "util/file.h"
+
+namespace Util {
+
+File::File(const std::string& path)
+	: m_path(path)
+{
+	// Create input stream object and open file
+	std::ifstream file(path, std::ios::in);
+	assert(file.is_open());
+
+	// Get length of the file
+	file.seekg(0, std::ios::end);
+	int32_t size = file.tellg();
+	file.seekg(0, std::ios::beg);
+	assert(size != -1);
+
+	// Allocate memory filled with zeros
+	auto buffer = std::make_unique<char[]>(size);
+
+	// Fill buffer with file contents
+	file.read(buffer.get(), size);
+	file.close();
+
+	m_data = std::string(buffer.get(), size);
+}
+
+File::~File()
+{
+}
+
+// -----------------------------------------
+
+void File::clear()
+{
+	m_data.clear();
+}
+
+File& File::append(std::string data)
+{
+	m_data.append(data);
+
+	return *this;
+}
+
+File& File::flush()
+{
+	// Create output stream object and open file
+	std::ofstream file(m_path, std::ios::out | std::ios::trunc);
+	assert(file.is_open());
+
+	// Write data to disk
+	file.write(m_data.c_str(), m_data.size());
+
+	return *this;
+}
+
+} // namespace Util