~drizzle-trunk/drizzle/development

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

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

 *

 *  Copyright (C) 2008 Sun Microsystems

 *

 *  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; version 2 of the License.

 *

 *  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 <drizzled/server_includes.h>

#include CSTDINT_H

#include <drizzled/function/math/ord.h>

int64_t Item_func_ord::val_int()

{

  assert(fixed == 1);

  String *res=args[0]->val_str(&value);

  if (!res)

  {

    null_value=1;

    return 0;

  }

  null_value=0;

  if (!res->length()) return 0;

  if (use_mb(res->charset()))

  {

    register const char *str=res->ptr();

    register uint32_t n=0, l=my_ismbchar(res->charset(),str,str+res->length());

    if (!l)

      return (int64_t)((unsigned char) *str);

    while (l--)

      n=(n<<8)|(uint32_t)((unsigned char) *str++);

    return (int64_t) n;

  }

  return (int64_t) ((unsigned char) (*res)[0]);

}