added io functionality

src/io/io.cpp

@@ -0,0 +1,36 @@
+#include "io/io.hpp"
+#include <fstream>
+#include <sstream>
+#include <stdexcept>
+#include <string>
+
+std::string read_file(const std::string &FILE_PATH) {
+  std::ifstream file(FILE_PATH);
+  if (!file) {
+    throw std::runtime_error("Error while opening file at " + FILE_PATH);
+  }
+  std::stringstream buffer;
+  buffer << file.rdbuf();
+
+  if (file.bad()) {
+    throw std::runtime_error("Error while reading file at " + FILE_PATH);
+  }
+
+  return buffer.str();
+}
+
+void write_file(const std::string &FILE_PATH, const std::string &CONTENT) {
+  std::ofstream out(FILE_PATH);
+  if (!out) {
+    throw std::runtime_error("Error while opening file for writing at " +
+                             FILE_PATH);
+  }
+
+  out << CONTENT;
+
+  if (!out) {
+    throw std::runtime_error("Error while writing to the " + FILE_PATH);
+  }
+
+  out.close();
+}

src/io/io.hpp

@@ -0,0 +1,13 @@
+#include <string>
+
+// @brief Read file from given path
+// @param FILE PATH Path to the file
+// @return File content
+// @throws std::runtime_error if any errors
+std::string read_file(const std::string &FILE_PATH);
+
+/// @brief Writes the given content into a file.
+/// @param FILE_PATH Path to the file to write.
+/// @param CONTENT Content to write into the file.
+/// @throws std::runtime_error if the file cannot be opened or written.
+void write_file(const std::string &FILE_PATH, const std::string &CONTENT);