c++ json parser euc-kr

#include <iostream>
#include <fstream>
#include <nlohmann/json.hpp>

int main() {
    std::ifstream file("data.json"); // Step 1: Open JSON file for reading
    if (!file.is_open()) {
        std::cerr << "Error opening file." << std::endl;
        return 1;
    }

    std::stringstream buffer; // Step 2: Create a string stream
    buffer << file.rdbuf(); // Step 3: Read file buffer into string stream

    std::string data = buffer.str(); // Step 4: Get string data from the buffer

    std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter; // Step 5: Create a converter
    std::wstring wideData = converter.from_bytes(data); // Step 6: Convert string to wide string

    std::wstring_convert<std::codecvt_euc<wchar_t>> eucConverter; // Step 7: Create EUC-KR converter
    std::string eucData = eucConverter.to_bytes(wideData); // Step 8: Convert wide string to EUC-KR string

    nlohmann::json json = nlohmann::json::parse(eucData); // Step 9: Parse EUC-KR encoded JSON data

    // Use the JSON data as needed

    file.close(); // Step 10: Close the file

    return 0;
}

Explanation for each step:

1. Includes necessary libraries: iostream for input/output, fstream for file handling, and nlohmann/json for JSON manipulation.

2. Opens a file stream (ifstream) named file to read the contents of the JSON file (data.json).

3. Creates a string stream (stringstream) named buffer.

4. Reads the entire content of the file buffer into the buffer string stream.

5. Creates a wstring_convert object using codecvt_utf8_utf16 to convert between UTF-8 and UTF-16 encoding.

6. Converts the content of the buffer string stream to a wide string (wideData) using the UTF-8 to UTF-16 converter.

7. Creates another wstring_convert object using codecvt_euc to convert between wide strings and EUC-KR encoding.

8. Converts the wide string (wideData) to EUC-KR encoded string (eucData) using the EUC-KR converter.

9. Uses the nlohmann::json::parse() function to parse the EUC-KR encoded JSON data into a json object for further manipulation.

10. Closes the file stream (file) after processing.

This C++ code demonstrates how to read a JSON file, convert its content from UTF-8 to UTF-16 and then to EUC-KR encoding, and parse it using the nlohmann/json library.