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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, Inc.
*
* 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 <config.h>
#include <drizzled/item/bin_string.h>
namespace drizzled {
/*
bin item.
In string context this is a binary string.
In number context this is a int64_t value.
*/
Item_bin_string::Item_bin_string(const char *str, uint32_t str_length)
{
const char *end= str + str_length - 1;
unsigned char bits= 0;
uint32_t power= 1;
max_length= (str_length + 7) >> 3;
char *ptr= (char*) memory::sql_alloc(max_length + 1);
if (!ptr)
return;
str_value.set(ptr, max_length, &my_charset_bin);
ptr+= max_length - 1;
ptr[1]= 0; // Set end null for string
for (; end >= str; end--)
{
if (power == 256)
{
power= 1;
*ptr--= bits;
bits= 0;
}
if (*end == '1')
bits|= power;
power<<= 1;
}
*ptr= (char) bits;
collation.set(&my_charset_bin, DERIVATION_COERCIBLE);
fixed= 1;
}
} /* namespace drizzled */
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