~drizzle-trunk/drizzle/development

/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2010 Brian Aker

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

#include <config.h>

#include <plugin/utility_dictionary/dictionary.h>

#include <drizzled/atomics.h>

#include <drizzled/session.h>

extern char **environ;

using namespace drizzled;

using namespace std;

#define LARGEST_ENV_STRING 512

utility_dictionary::Environmental::Environmental() :

  plugin::TableFunction("DATA_DICTIONARY", "ENVIRONMENTAL")

{

  add_field("VARIABLE_NAME", plugin::TableFunction::STRING, LARGEST_ENV_STRING, true);

  add_field("VARIABLE_VALUE", plugin::TableFunction::STRING, LARGEST_ENV_STRING, false);

}

utility_dictionary::Environmental::Generator::Generator(drizzled::Field **arg) :

  drizzled::plugin::TableFunction::Generator(arg),

  position(0)

{

  position= environ;

}

bool utility_dictionary::Environmental::Generator::populate()

{

  if (not *position)

    return false;

  char *value= NULL;

  if ((value= strchr(*position, '=')))

  {

    value++;

  }

  if (value)

  {

    std::string substring(*position, 0, (size_t)(value - *position -1)); // The additional -1 is for the = 

    push(substring);

    substring.assign(value, 0, LARGEST_ENV_STRING);

    push(substring);

  }

  else

  {

    std::string substring(*position, 0, LARGEST_ENV_STRING);

    push(false);

  }

  position++;

  return true;

}