Function validate_comment_length

sql/sql_table.cc:1567–1596

*/

bool validate_comment_length(THD *thd, const char *comment_str,
                             size_t *comment_len, uint max_len,
                             uint err_code, const char *comment_name)
{
  int length= 0;
  DBUG_ENTER("validate_comment_length");
  uint tmp_len= system_charset_info->cset->charpos(system_charset_info,
                                                   comment_str,
                                                   comment_str +
                                                   *comment_len,
                                                   max_len);
  if (tmp_len < *comment_len)
  {
    if (thd->is_strict_mode())
    {
      my_error(err_code, MYF(0),
               comment_name, static_cast<ulong>(max_len));
      DBUG_RETURN(true);
    }
    char warn_buff[MYSQL_ERRMSG_SIZE];
    length= my_snprintf(warn_buff, sizeof(warn_buff), ER(err_code),
                        comment_name, static_cast<ulong>(max_len));
    /* do not push duplicate warnings */
    if (!thd->get_stmt_da()->has_sql_condition(warn_buff, length)) 
      push_warning(thd, Sql_condition::WARN_LEVEL_WARN,
                   err_code, warn_buff);
    *comment_len= tmp_len;
  }
  DBUG_RETURN(false);
}

/*
  Extend long VARCHAR fields to blob & prepare field if it's a blob