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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/plugin/function.h>
#include <drizzled/function/math/int.h>
#include <plugin/compression/uncompressed_length.h>
#include <string>
using namespace std;
using namespace drizzled;
int64_t Item_func_uncompressed_length::val_int()
{
assert(fixed == 1);
String *res= args[0]->val_str(&value);
if (!res)
{
null_value=1;
return 0;
}
null_value=0;
if (res->empty()) return 0;
/*
res->ptr() using is safe because we have tested that string is not empty,
res->c_ptr() is not used because:
- we do not need \0 terminated string to get first 4 bytes
- c_ptr() tests simbol after string end (uninitialiozed memory) which
confuse valgrind
*/
return uint4korr(res->ptr()) & 0x3FFFFFFF;
}
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