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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/error.h>
#include <drizzled/current_session.h>
#include <drizzled/function/signed.h>
void Item_func_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 Item_func_signed::val_int_from_str(int *error)
{
char buff[MAX_FIELD_WIDTH], *end, *start;
uint32_t length;
String tmp(buff,sizeof(buff), &my_charset_bin), *res;
int64_t value;
/*
For a string result, we must first get the string and then convert it
to a int64_t
*/
if (!(res= args[0]->val_str(&tmp)))
{
null_value= 1;
*error= 0;
return 0;
}
null_value= 0;
start= (char *)res->ptr();
length= res->length();
end= start + length;
value= my_strtoll10(start, &end, error);
if (*error > 0 || end != start+ length)
{
char err_buff[128];
String err_tmp(err_buff,(uint32_t) sizeof(err_buff), system_charset_info);
err_tmp.copy(start, length, system_charset_info);
push_warning_printf(current_session, DRIZZLE_ERROR::WARN_LEVEL_WARN,
ER_TRUNCATED_WRONG_VALUE,
ER(ER_TRUNCATED_WRONG_VALUE), "INTEGER",
err_tmp.c_ptr());
}
return value;
}
int64_t Item_func_signed::val_int()
{
int64_t value;
int error;
if (args[0]->cast_to_int_type() != STRING_RESULT ||
args[0]->result_as_int64_t())
{
value= args[0]->val_int();
null_value= args[0]->null_value;
return value;
}
value= val_int_from_str(&error);
if (value < 0 && error == 0)
{
push_warning(current_session, DRIZZLE_ERROR::WARN_LEVEL_WARN, ER_UNKNOWN_ERROR,
"Cast to signed converted positive out-of-range integer to "
"it's negative complement");
}
return value;
}
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