Function err_conv

sql/sql_error.cc:880–931

*/

uint err_conv(char *buff, size_t to_length, const char *from,
              size_t from_length, const CHARSET_INFO *from_cs)
{
  char *to= buff;
  const char *from_start= from;
  size_t res;

  DBUG_ASSERT(to_length > 0);
  to_length--;
  if (from_cs == &my_charset_bin)
  {
    uchar char_code;
    res= 0;
    while (1)
    {
      if ((uint)(from - from_start) >= from_length ||
          res >= to_length)
      {
        *to= 0;
        break;
      }

      char_code= ((uchar) *from);
      if (char_code >= 0x20 && char_code <= 0x7E)
      {
        *to++= char_code;
        from++;
        res++;
      }
      else
      {
        if (res + 4 >= to_length)
        {
          *to= 0;
          break;
        }
        res+= my_snprintf(to, 5, "\\x%02X", (uint) char_code);
        to+=4;
        from++;
      }
    }
  }
  else
  {
    uint errors;
    res= copy_and_convert(to, to_length, system_charset_info,
                          from, from_length, from_cs, &errors);
    to+= res;
    *to= 0;
  }
  return to - buff;
}


/**