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/* - mode: c++ c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Brian Aker
*
* 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 <drizzled/charset_info.h>
#include <drizzled/error.h>
#include <drizzled/function/cast/signed.h>
#include <drizzled/lex_string.h>
namespace drizzled {
namespace function {
namespace cast {
void Signed::print(String *str, enum_query_type query_type)
{
str->append(STRING_WITH_LEN("cast("));
args[0]->print(str, query_type);
str->append(STRING_WITH_LEN(" as signed)"));
}
int64_t Signed::val_int()
{
int64_t value;
int error= 0;
char buff[MAX_FIELD_WIDTH];
String res_buffer(buff,sizeof(buff), &my_charset_bin);
String *res;
if (not (res= args[0]->val_str(&res_buffer)))
{
null_value= 1;
error= 0;
return 0;
}
null_value= 0;
char *end= res->ptr() + res->length();
value= res->charset()->cset->strntoull10rnd(res->charset(),
res->ptr(),
res->length(),
false, &end, &error);
if (error or (end != res->ptr() + res->length()))
{
my_error(ER_INVALID_CAST_TO_SIGNED, MYF(0), res->c_str());
}
return value;
}
} // namespace cast
} // namespace function
} // namespace drizzled
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