CsvWriter H Define CsvWriter H Include Vector

Csvwriterhifndef Csvwriter Hdefine Csvwriter Hinclude Vecto

Csvwriterhifndef Csvwriter Hdefine Csvwriter Hinclude Vecto

CsvWriter.h #ifndef CSVWRITER_H #define CSVWRITER_H #include #include #include using namespace std; class CsvWriter { private: vector _lines; int _currentLine; public: CsvWriter() { _currentLine = 0; _lines.push_back(""); } //Adds a new cell to the current row void addText(string text) { string &currentLine = _lines[_currentLine]; if(currentLine.length() > 0) { currentLine += ","; } currentLine += "\"" + text + "\""; } //Moves the CsvWriter to the next line in the CSV file void nextLine() { _lines.push_back(""); _currentLine++; } //Converts the class into a string-based CSV file. string toCsvString() const { string output = ""; for(vector::const_iterator iter = _lines.begin(); iter != _lines.end(); iter++) { output += *iter + "\n"; } return output; } }; #endif Capture.GIF Captu2re.GIF

Paper For Above instruction

The provided code snippet illustrates the design and implementation of a simple CSV writer class in C++. The primary objective of such a class is to facilitate the creation, manipulation, and output of CSV-format data within a C++ environment. CSV (Comma-Separated Values) is a widely adopted file format for data interchange, especially when importing and exporting data between different systems or software applications such as Excel, databases, or data analysis tools. A CSV writer class simplifies this process by managing the details of data formatting, such as handling delimiters and encapsulating text within quotes to ensure data integrity when special characters or delimiters are present.

In the core of the code, the class CsvWriter maintains a private vector of strings, each representing a line in the CSV file, along with an integer index to track the current line being written to. The constructor initializes the CSV with a single empty line and sets the current line index to zero. The class offers three main public methods: addText(), nextLine(), and toCsvString().

The addText() method appends a string to the current line, enclosing the text within double quotes to prevent issues with commas and line breaks within data fields. If the current line already contains some data, it adds a comma separator before appending the new text, thus maintaining the CSV format. This functionality allows users to add individual cells to the current row, with the class handling the necessary formatting details.

The nextLine() method advances the writer to a new line in the CSV file by pushing an empty string into the vector and incrementing the current line index. This enables the sequential addition of multiple rows to the CSV data, ensuring each row starts with a clean slate for cell data.

Finally, the toCsvString() method converts the internal data representation into a single string formatted as CSV. It iterates over all lines stored in the vector, concatenating each line with a newline character, producing a correctly formatted CSV string that can be written to a file or used elsewhere for data processing. This method ensures that the output is well-structured, with each row separated by a newline, and each cell encapsulated within quotes, except where necessary to preserve data integrity.

Despite the simplicity of this implementation, it encapsulates essential features of a CSV writer, such as managing multiple rows, handling cell data with proper quoting, and exporting the complete CSV content as a string. For more robust applications, additional functionality such as handling different delimiters, escaping quotes within data, and supporting various data types could be integrated. However, this code provides a clear foundation for understanding how to create and manipulate CSV data programmatically in C++.

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