Function show_status_array

sql/sql_show.cc:3995–4141

static bool show_status_array(THD *thd, const char *wild,
                              SHOW_VAR *variables,
                              enum enum_var_type scope,
                              struct system_status_var *status_var,
                              const LEX_CSTRING &prefix, TABLE *table,
                              bool ucase_names,
                              COND *cond)
{
  my_aligned_storage<SHOW_VAR_FUNC_BUFF_SIZE, MY_ALIGNOF(long)> buffer;
  char * const buff= buffer.data;
  CharBuffer<NAME_CHAR_LEN> name_buffer;
  SHOW_VAR tmp, *var;
  bool res= FALSE;
  CHARSET_INFO *charset= system_charset_info;
  DBUG_ENTER("show_status_array");

  if (prefix.length)
  {
    if (ucase_names)
      name_buffer.copy_caseup(system_charset_info, prefix);
    else
      name_buffer.copy_casedn(system_charset_info, prefix);
    name_buffer.append(Lex_cstring("_", 1));
  }
  size_t prefix_length= name_buffer.length();

#ifdef WITH_WSREP
  bool is_wsrep_var= FALSE;
  /*
    This is a workaround for lp:1306875 (PBX) to skip switching of wsrep
    status variable name's first letter to uppercase. This is an optimization
    for status variables defined under wsrep plugin.
    TODO: remove once lp:1306875 has been addressed.
  */
  if (prefix.length && Lex_ident_sys_var(prefix).streq("wsrep"_LEX_CSTRING))
  {
    is_wsrep_var= TRUE;
  }
#endif /* WITH_WSREP */

  for (; variables->name; variables++)
  {
    bool wild_checked= false;
    Lex_cstring_strlen var_name(variables->name);
    name_buffer.truncate(prefix_length);

#ifdef WITH_WSREP
    /*
      If the prefix is NULL, that means we are looking into the status variables
      defined directly under mysqld.cc. Do not capitalize wsrep status variable
      names until lp:1306875 has been fixed.
      TODO: remove once lp:1306875 has been addressed.
     */
    if (!prefix.length &&
        !strncasecmp(variables->name, STRING_WITH_LEN("wsrep")))
    {
      is_wsrep_var= TRUE;
    }