How to convert Russian text to \u0418\u043b\u044c\u044f?

Question

JSON

Tell me how to translate plain Russian text to the form \u0418\u043b\u044c\u044f using C# or JS .
Thanks in advance.

Answer 1

using System;
using System.Text;

class Program
{
    static void Main()
    {
        string st = "Привет, мир!";
        Console.WriteLine(foo(st));
    }
    
    static string foo(string input)
    {
        StringBuilder sb = new StringBuilder();
        for(int i = 0; i < input.Length; i += Char.IsSurrogatePair(input, i) ? 2 : 1)
        {
            int index = Char.ConvertToUtf32(input, i);
            sb.Append(@"\u" + index.ToString("x4"));
        }
        
        return sb.ToString();
    }
}

For surrogate pairs, it will produce "ugly" values ​​- there will be more than four digits.
If you plan to work with them, you need to come up with something. For example, for all the format is "x8".
If not, it's better to throw an exception on if(Char.IsSurrogatePair(input, i)).