~drizzle-trunk/drizzle/development

/*

  Copyright (C) 2010 Stewart Smith

  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 Street, Fifth Floor, Boston, MA  02110-1301, USA.

*/

#include "config.h"

#include <drizzled/plugin/function.h>

#include <drizzled/item/func.h>

#include "drizzled/charset.h"

#include <drizzled/function/str/strfunc.h>

#include "libinnodb_version_func.h"

#include "embedded_innodb-1.0/innodb.h"

using namespace std;

using namespace drizzled;

class LibinnodbVersionFunction : public Item_str_func

{

public:

  LibinnodbVersionFunction() : Item_str_func() {}

  String *val_str(String*);

  void fix_length_and_dec()

  {

    max_length= 32;

  }

  const char *func_name() const

  {

    return "libinnodb_version";

  }

  bool check_argument_count(int n)

  {

    return (n == 0);

  }

};

String *LibinnodbVersionFunction::val_str(String *str)

{

  assert(fixed == true);

  if (str->alloc(50))

  {

    null_value= true;

    return 0;

  }

  null_value= false;

  uint64_t version= ib_api_version();

  int len= snprintf((char *) str->ptr(), 50,

                    "Release %"PRIx64", Revision %"PRIx64", Age %"PRIx64,

                    version >> 32,

                    (version >> 16) & 0xffff,

                    version & 0xffff);

  str->length(len);

  return str;

}

plugin::Create_function<LibinnodbVersionFunction> *libinnodb_version_func= NULL;

int libinnodb_version_func_initialize(module::Context &context)

{

  libinnodb_version_func= new plugin::Create_function<LibinnodbVersionFunction>("libinnodb_version");

  context.add(libinnodb_version_func);

  return 0;

}