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Viewing changes to plugin/collation_dictionary/character_sets.cc

  • Committer: Monty Taylor
  • Date: 2009-04-14 19:16:51 UTC
  • mto: (997.2.5 mordred)
  • mto: This revision was merged to the branch mainline in revision 994.
  • Revision ID: mordred@inaugust.com-20090414191651-ltbww6hpqks8k7qk
Clarified instructions in README.

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plugin/collation_dictionary/character_sets.cc
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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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 *
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 *  Copyright (C) 2010 Sun Microsystems
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation; either version 2 of the License, or
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 *  (at your option) any later version.
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 *
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 *  This program is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program; if not, write to the Free Software
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#include "config.h"
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#include "plugin/collation_dictionary/dictionary.h"
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using namespace std;
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using namespace drizzled;
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CharacterSetsTool::CharacterSetsTool() :
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  plugin::TableFunction("DATA_DICTIONARY", "CHARACTER_SETS")
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{
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  add_field("CHARACTER_SET_NAME");
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  add_field("DEFAULT_COLLATE_NAME");
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  add_field("DESCRIPTION");
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  add_field("MAXLEN", plugin::TableFunction::NUMBER);
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}
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CharacterSetsTool::Generator::Generator(Field **arg) :
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  plugin::TableFunction::Generator(arg),
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  is_char_primed(false)
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{
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}
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bool CharacterSetsTool::Generator::checkCharacterSet()
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{
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  if (character_set() && (character_set()->state & MY_CS_PRIMARY) &&
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      (character_set()->state & MY_CS_AVAILABLE) && not (character_set()->state & MY_CS_HIDDEN))
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  {
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    return false;
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  }
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  return true;
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}
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bool CharacterSetsTool::Generator::nextCharacterSetCore()
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{
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  if (is_char_primed)
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  {
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    character_set_iter++;
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  }
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  else
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  {
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    character_set_iter= all_charsets;
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    is_char_primed= true;
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  }
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  if (character_set_iter == all_charsets+255)
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    return false;
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  if (checkCharacterSet())
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      return false;
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  return true;
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}
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bool CharacterSetsTool::Generator::nextCharacterSet()
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{
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  while (not nextCharacterSetCore())
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  {
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    if (character_set_iter == all_charsets+255)
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      return false;
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  }
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  return true;
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}
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bool CharacterSetsTool::Generator::populate()
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{
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  if (nextCharacterSet())
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  {
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    fill();
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    return true;
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  }
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  return false;
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}
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void CharacterSetsTool::Generator::fill()
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{
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  const CHARSET_INFO * const tmp_cs= character_set_iter[0];
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  /* CHARACTER_SET_NAME */
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  push(tmp_cs->csname);
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  /* DEFAULT_COLLATE_NAME */
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  push(tmp_cs->name);
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  /* DESCRIPTION */
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  push(tmp_cs->comment);
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  /* MAXLEN */
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  push(static_cast<int64_t>(tmp_cs->mbmaxlen));
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}