Manager: Add feature to selectively comment and uncomment

src/util/file.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 Riyyi
+ * Copyright (C) 2021-2022 Riyyi
  *
  * SPDX-License-Identifier: MIT
  */
@@ -55,6 +55,13 @@ File& File::append(std::string data)
 	return *this;
 }
 
+File& File::replace(size_t index, size_t length, const std::string& data)
+{
+	m_data.replace(index, length, data);
+
+	return *this;
+}
+
 File& File::flush()
 {
 	// Create output stream object and open file

src/util/file.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2021 Riyyi
+ * Copyright (C) 2021-2022 Riyyi
  *
  * SPDX-License-Identifier: MIT
  */
@@ -18,6 +18,7 @@ public:
 
 	void clear();
 	File& append(std::string data);
+	File& replace(size_t index, size_t length, const std::string& data);
 	File& flush();
 
 	const char* c_str() const { return m_data.c_str(); }