~drizzle-trunk/drizzle/development

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

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

 *

 *  Copyright (C) 2009 Sun Microsystems, Inc.

 *

 *  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 <assert.h>

#include "drizzled/identifier.h"

#include "drizzled/session.h"

#include "drizzled/current_session.h"

#include "drizzled/internal/my_sys.h"

#include "drizzled/util/tablename_to_filename.h"

#include "drizzled/util/backtrace.h"

#include <algorithm>

#include <sstream>

#include <cstdio>

#include <boost/algorithm/string/compare.hpp>

using namespace std;

namespace drizzled

{

namespace identifier

{

extern string drizzle_tmpdir;

extern pid_t current_pid;

static size_t build_schema_filename(string &path, const string &db)

{

  path.append("");

  bool conversion_error= false;

  conversion_error= util::tablename_to_filename(db, path);

  if (conversion_error)

  {

    errmsg_printf(ERRMSG_LVL_ERROR,

                  _("Schema name cannot be encoded and fit within filesystem "

                    "name length restrictions."));

    return 0;

  }

  return path.length();

}

Schema::Schema(const std::string &db_arg) :

  db(db_arg),

  db_path("")

{ 

#if 0

  string::size_type lastPos= db.find_first_of('/', 0);

  if (lastPos != std::string::npos) 

  {

    catalog= db.substr(0, lastPos);

    db.erase(0, lastPos + 1);

  }

#endif

  if (not db_arg.empty())

  {

    build_schema_filename(db_path, db);

    assert(db_path.length()); // TODO throw exception, this is a possibility

  }

}

void Schema::getSQLPath(std::string &arg) const

{

  arg= db;

}

const std::string &Schema::getPath() const

{

  return db_path;

}

bool Schema::compare(const std::string &arg) const

{

  return boost::iequals(arg, db);

}

bool Schema::compare(Schema::const_reference arg) const

{

  return boost::iequals(arg.getSchemaName(), db);

}

bool Schema::isValid() const

{

  bool error= false;

  do

  {

    if (db.empty())

    {

      error= true;

      break;

    }

    if (db.size() > NAME_LEN)

    {

      error= true;

      break;

    }

    if (db.at(db.length() -1) == ' ')

    {

      error= true;

      break;

    }

    if (db.at(0) == '.')

    {

      error= true;

      break;

    }

    {

      const CHARSET_INFO * const cs= &my_charset_utf8mb4_general_ci;

      int well_formed_error;

      uint32_t res= cs->cset->well_formed_len(cs, db.c_str(), db.c_str() + db.length(),

                                              NAME_CHAR_LEN, &well_formed_error);

      if (well_formed_error or db.length() != res)

      {

        error= true;

        break;

      }

    }

  } while (0);

  if (error)

  {

    my_error(ER_WRONG_DB_NAME, *this);

    return false;

  }

  return true;

}

const std::string &Schema::getCatalogName() const

{

  return drizzled::catalog::local_identifier().name();

}

std::ostream& operator<<(std::ostream& output, const Schema&identifier)

{

  output << "identifier::Schema:(";

  output <<  catalog::local_identifier();

  output << ", ";

  output <<  identifier.getSchemaName().c_str();

  output << ", ";

  output << identifier.getPath().c_str();

  output << ")";

  return output;  // for multiple << operators.

}

} /* namespace identifier */

} /* namespace drizzled */