Function append_identifier

sql/sql_show.cc:509–550

*/

void
append_identifier(THD *thd, String *packet, const char *name, uint length)
{
  const char *name_end;
  char quote_char;
  int q;
  q= thd ? get_quote_char_for_identifier(thd, name, length) : '`';

  if (q == EOF)
  {
    packet->append(name, length, packet->charset());
    return;
  }

  /*
    The identifier must be quoted as it includes a quote character or
   it's a keyword
  */

  (void) packet->reserve(length*2 + 2);
  quote_char= (char) q;
  packet->append(&quote_char, 1, system_charset_info);

  for (name_end= name+length ; name < name_end ; name+= length)
  {
    uchar chr= (uchar) *name;
    length= my_mbcharlen(system_charset_info, chr);
    /*
      my_mbcharlen can return 0 on a wrong multibyte
      sequence. It is possible when upgrading from 4.0,
      and identifier contains some accented characters.
      The manual says it does not work. So we'll just
      change length to 1 not to hang in the endless loop.
    */
    if (!length)
      length= 1;
    if (length == 1 && chr == (uchar) quote_char)
      packet->append(&quote_char, 1, system_charset_info);
    packet->append(name, length, system_charset_info);
  }
  packet->append(&quote_char, 1, system_charset_info);
}


/*