Function Truncate

libs/base/string_utils.cpp:267–297

}

bool Truncate(std::string & utf8, size_t const maxTextLengthPlus1)
{
  size_t codePoints = 0;

  for (size_t i = 0; i < utf8.length(); ++i)
  {
    if ((utf8[i] & 0xC0) != 0x80)
    {
      if (++codePoints == maxTextLengthPlus1)
      {
        --i;

        auto const & byte = utf8[i];
        uint8_t bytesInCodepoint = 1;

        if ((byte & 0x80) == 0x00)
        {}
        else if ((byte & 0xE0) == 0xC0)
          bytesInCodepoint = 2;
        else if ((byte & 0xF0) == 0xE0)
          bytesInCodepoint = 3;
        else if ((byte & 0xF8) == 0xF0)
          bytesInCodepoint = 4;

        utf8.resize(i + bytesInCodepoint);
        return true;
      }
    }
  }
  return false;
}

bool ReplaceFirst(std::string & str, std::string const & from, std::string const & to)
{