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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
*
* 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/str/weight_string.h>
#include <algorithm>
using namespace std;
void Item_func_weight_string::fix_length_and_dec()
{
const CHARSET_INFO * const cs= args[0]->collation.collation;
collation.set(&my_charset_bin, args[0]->collation.derivation);
flags= my_strxfrm_flag_normalize(flags, cs->levels_for_order);
max_length= cs->mbmaxlen * max(args[0]->max_length, nweights);
maybe_null= 1;
}
/* Return a weight_string according to collation */
String *Item_func_weight_string::val_str(String *str)
{
String *res;
const CHARSET_INFO * const cs= args[0]->collation.collation;
uint32_t tmp_length, frm_length;
assert(fixed == 1);
if (args[0]->result_type() != STRING_RESULT ||
!(res= args[0]->val_str(str)))
goto nl;
tmp_length= cs->coll->strnxfrmlen(cs, cs->mbmaxlen *
max(res->length(), nweights));
if (tmp_value.alloc(tmp_length))
goto nl;
frm_length= cs->coll->strnxfrm(cs,
(unsigned char*) tmp_value.ptr(), tmp_length,
nweights ? nweights : tmp_length,
(const unsigned char*) res->ptr(), res->length(),
flags);
tmp_value.length(frm_length);
null_value= 0;
return &tmp_value;
nl:
null_value= 1;
return 0;
}
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