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Mini Shell
#ifndef ITEM_INETFUNC_INCLUDED
#define ITEM_INETFUNC_INCLUDED
/* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
Copyright (c) 2014 MariaDB Foundation
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 02110-1335 USA */
#include "item.h"
/*************************************************************************
Item_func_inet_aton implements INET_ATON() SQL-function.
*************************************************************************/
class Item_func_inet_aton : public Item_longlong_func
{
bool check_arguments() const
{ return check_argument_types_can_return_text(0, arg_count); }
public:
Item_func_inet_aton(THD *thd, Item *a): Item_longlong_func(thd, a) {}
longlong val_int();
const char *func_name() const { return "inet_aton"; }
bool fix_length_and_dec()
{
decimals= 0;
max_length= 21;
maybe_null= 1;
unsigned_flag= 1;
return FALSE;
}
Item *get_copy(THD *thd)
{ return get_item_copy<Item_func_inet_aton>(thd, this); }
};
/*************************************************************************
Item_func_inet_ntoa implements INET_NTOA() SQL-function.
*************************************************************************/
class Item_func_inet_ntoa : public Item_str_func
{
public:
Item_func_inet_ntoa(THD *thd, Item *a): Item_str_func(thd, a)
{ }
String* val_str(String* str);
const char *func_name() const { return "inet_ntoa"; }
bool fix_length_and_dec()
{
decimals= 0;
fix_length_and_charset(3 * 8 + 7, default_charset());
maybe_null= 1;
return FALSE;
}
Item *get_copy(THD *thd)
{ return get_item_copy<Item_func_inet_ntoa>(thd, this); }
};
/*************************************************************************
Item_func_inet_bool_base implements common code for INET6/IP-related
functions returning boolean value.
*************************************************************************/
class Item_func_inet_bool_base : public Item_bool_func
{
public:
inline Item_func_inet_bool_base(THD *thd, Item *ip_addr):
Item_bool_func(thd, ip_addr)
{
null_value= false;
}
public:
virtual longlong val_int();
bool need_parentheses_in_default() { return false; }
protected:
virtual bool calc_value(const String *arg) = 0;
};
/*************************************************************************
Item_func_inet_str_base implements common code for INET6/IP-related
functions returning string value.
*************************************************************************/
class Item_func_inet_str_base : public Item_str_ascii_func
{
public:
inline Item_func_inet_str_base(THD *thd, Item *arg):
Item_str_ascii_func(thd, arg)
{ }
public:
virtual String *val_str_ascii(String *buffer);
protected:
virtual bool calc_value(const String *arg, String *buffer) = 0;
};
/*************************************************************************
Item_func_inet6_aton implements INET6_ATON() SQL-function.
*************************************************************************/
class Item_func_inet6_aton : public Item_func_inet_str_base
{
public:
inline Item_func_inet6_aton(THD *thd, Item *ip_addr):
Item_func_inet_str_base(thd, ip_addr)
{ }
public:
virtual const char *func_name() const
{ return "inet6_aton"; }
virtual bool fix_length_and_dec()
{
decimals= 0;
fix_length_and_charset(16, &my_charset_bin);
maybe_null= 1;
return FALSE;
}
Item *get_copy(THD *thd)
{ return get_item_copy<Item_func_inet6_aton>(thd, this); }
protected:
virtual bool calc_value(const String *arg, String *buffer);
};
/*************************************************************************
Item_func_inet6_ntoa implements INET6_NTOA() SQL-function.
*************************************************************************/
class Item_func_inet6_ntoa : public Item_func_inet_str_base
{
public:
inline Item_func_inet6_ntoa(THD *thd, Item *ip_addr):
Item_func_inet_str_base(thd, ip_addr)
{ }
public:
virtual const char *func_name() const
{ return "inet6_ntoa"; }
virtual bool fix_length_and_dec()
{
decimals= 0;
// max length: IPv6-address -- 16 bytes
// 16 bytes / 2 bytes per group == 8 groups => 7 delimiter
// 4 symbols per group
fix_length_and_charset(8 * 4 + 7, default_charset());
maybe_null= 1;
return FALSE;
}
Item *get_copy(THD *thd)
{ return get_item_copy<Item_func_inet6_ntoa>(thd, this); }
protected:
virtual bool calc_value(const String *arg, String *buffer);
};
/*************************************************************************
Item_func_is_ipv4 implements IS_IPV4() SQL-function.
*************************************************************************/
class Item_func_is_ipv4 : public Item_func_inet_bool_base
{
public:
inline Item_func_is_ipv4(THD *thd, Item *ip_addr):
Item_func_inet_bool_base(thd, ip_addr)
{ }
public:
virtual const char *func_name() const
{ return "is_ipv4"; }
Item *get_copy(THD *thd)
{ return get_item_copy<Item_func_is_ipv4>(thd, this); }
protected:
virtual bool calc_value(const String *arg);
};
/*************************************************************************
Item_func_is_ipv6 implements IS_IPV6() SQL-function.
*************************************************************************/
class Item_func_is_ipv6 : public Item_func_inet_bool_base
{
public:
inline Item_func_is_ipv6(THD *thd, Item *ip_addr):
Item_func_inet_bool_base(thd, ip_addr)
{ }
public:
virtual const char *func_name() const
{ return "is_ipv6"; }
Item *get_copy(THD *thd)
{ return get_item_copy<Item_func_is_ipv6>(thd, this); }
protected:
virtual bool calc_value(const String *arg);
};
/*************************************************************************
Item_func_is_ipv4_compat implements IS_IPV4_COMPAT() SQL-function.
*************************************************************************/
class Item_func_is_ipv4_compat : public Item_func_inet_bool_base
{
public:
inline Item_func_is_ipv4_compat(THD *thd, Item *ip_addr):
Item_func_inet_bool_base(thd, ip_addr)
{ }
public:
virtual const char *func_name() const
{ return "is_ipv4_compat"; }
Item *get_copy(THD *thd)
{ return get_item_copy<Item_func_is_ipv4_compat>(thd, this); }
protected:
virtual bool calc_value(const String *arg);
};
/*************************************************************************
Item_func_is_ipv4_mapped implements IS_IPV4_MAPPED() SQL-function.
*************************************************************************/
class Item_func_is_ipv4_mapped : public Item_func_inet_bool_base
{
public:
inline Item_func_is_ipv4_mapped(THD *thd, Item *ip_addr):
Item_func_inet_bool_base(thd, ip_addr)
{ }
public:
virtual const char *func_name() const
{ return "is_ipv4_mapped"; }
Item *get_copy(THD *thd)
{ return get_item_copy<Item_func_is_ipv4_mapped>(thd, this); }
protected:
virtual bool calc_value(const String *arg);
};
#endif // ITEM_INETFUNC_INCLUDED
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