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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 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; 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 "config.h"
#include <drizzled/function/str/conv.h>
#include "drizzled/internal/m_string.h"
namespace drizzled
{
String *Item_func_conv::val_str(String *str)
{
assert(fixed == 1);
String *res= args[0]->val_str(str);
char *endptr,ans[65],*ptr;
int64_t dec;
int from_base= (int) args[1]->val_int();
int to_base= (int) args[2]->val_int();
int err;
if (args[0]->null_value || args[1]->null_value || args[2]->null_value ||
abs(to_base) > 36 || abs(to_base) < 2 ||
abs(from_base) > 36 || abs(from_base) < 2 || !(res->length()))
{
null_value= 1;
return NULL;
}
null_value= 0;
unsigned_flag= !(from_base < 0);
if (from_base < 0)
dec= my_strntoll(res->charset(), res->ptr(), res->length(),
-from_base, &endptr, &err);
else
dec= (int64_t) my_strntoull(res->charset(), res->ptr(), res->length(),
from_base, &endptr, &err);
ptr= internal::int64_t2str(dec, ans, to_base);
if (str->copy(ans, (uint32_t) (ptr-ans), default_charset()))
return &my_empty_string;
return str;
}
} /* namespace drizzled */
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