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/* Copyright (C) 2000-2006 MySQL AB
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/**
@file
@brief
This file defines all string functions
@warning
Some string functions don't always put and end-null on a String.
(This shouldn't be needed)
*/
#include "config.h"
#include <zlib.h>
#include <drizzled/query_id.h>
#include <drizzled/error.h>
#include <drizzled/function/str/strfunc.h>
// For soundex_map
#include "drizzled/internal/my_static.h"
using namespace std;
namespace drizzled
{
Item_str_func::~Item_str_func() {}
bool Item_str_func::fix_fields(Session *session, Item **ref)
{
bool res= Item_func::fix_fields(session, ref);
/*
In Item_str_func::check_well_formed_result() we may set null_value
flag on the same condition as in test() below.
*/
maybe_null= (maybe_null || true);
return res;
}
my_decimal *Item_str_func::val_decimal(my_decimal *decimal_value)
{
assert(fixed == 1);
char buff[64];
String *res, tmp(buff,sizeof(buff), &my_charset_bin);
res= val_str(&tmp);
if (!res)
return 0;
(void)str2my_decimal(E_DEC_FATAL_ERROR, (char*) res->ptr(),
res->length(), res->charset(), decimal_value);
return decimal_value;
}
double Item_str_func::val_real()
{
assert(fixed == 1);
int err_not_used;
char *end_not_used, buff[64];
String *res, tmp(buff,sizeof(buff), &my_charset_bin);
res= val_str(&tmp);
return res ? my_strntod(res->charset(), (char*) res->ptr(), res->length(),
&end_not_used, &err_not_used) : 0.0;
}
int64_t Item_str_func::val_int()
{
assert(fixed == 1);
int err;
char buff[22];
String *res, tmp(buff,sizeof(buff), &my_charset_bin);
res= val_str(&tmp);
return (res ?
my_strntoll(res->charset(), res->ptr(), res->length(), 10, NULL,
&err) :
(int64_t) 0);
}
void Item_str_func::left_right_max_length()
{
max_length=args[0]->max_length;
if (args[1]->const_item())
{
int length=(int) args[1]->val_int()*collation.collation->mbmaxlen;
if (length <= 0)
max_length=0;
else
set_if_smaller(max_length,(uint) length);
}
}
String my_empty_string("",default_charset_info);
} /* namespace drizzled */
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