mirror of
https://github.com/mariadb-corporation/mariadb-columnstore-engine.git
synced 2025-04-23 07:05:36 +03:00
3919c541ac
* Fix clang warnings * Remove vim tab guides * initialize variables * 'strncpy' output truncated before terminating nul copying as many bytes from a string as its length * Fix ISO C++17 does not allow 'register' storage class specifier for outdated bison * chars are unsigned on ARM, having if (ival < 0) always false * chars are unsigned by default on ARM and comparison with -1 if always true
105 lines
2.9 KiB
C++
105 lines
2.9 KiB
C++
/* Copyright (C) 2014 InfiniDB, 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 Street, Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
/****************************************************************************
|
|
* $Id: func_insert.cpp 2477 2011-04-01 16:07:35Z rdempsey $
|
|
*
|
|
*
|
|
****************************************************************************/
|
|
|
|
#include <string>
|
|
using namespace std;
|
|
|
|
#include "functor_str.h"
|
|
#include "functioncolumn.h"
|
|
using namespace execplan;
|
|
|
|
#include "rowgroup.h"
|
|
using namespace rowgroup;
|
|
|
|
#include "joblisttypes.h"
|
|
using namespace joblist;
|
|
|
|
#include "utf8.h"
|
|
using namespace utf8;
|
|
|
|
namespace funcexp
|
|
{
|
|
CalpontSystemCatalog::ColType Func_insert::operationType(FunctionParm& fp,
|
|
CalpontSystemCatalog::ColType& resultType)
|
|
{
|
|
// operation type is not used by this functor
|
|
return fp[0]->data()->resultType();
|
|
}
|
|
|
|
std::string Func_insert::getStrVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull,
|
|
execplan::CalpontSystemCatalog::ColType&)
|
|
{
|
|
string src;
|
|
string tnewstr;
|
|
int64_t start, length;
|
|
|
|
stringValue(fp[0], row, isNull, src);
|
|
if (isNull)
|
|
return "";
|
|
|
|
stringValue(fp[3], row, isNull, tnewstr);
|
|
if (isNull)
|
|
return "";
|
|
|
|
start = fp[1]->data()->getIntVal(row, isNull);
|
|
if (isNull)
|
|
return "";
|
|
start--; // Because SQL syntax is 1 based and we want 0 based.
|
|
|
|
length = fp[2]->data()->getIntVal(row, isNull);
|
|
if (isNull)
|
|
return "";
|
|
|
|
CHARSET_INFO* cs = fp[0]->data()->resultType().getCharset();
|
|
|
|
// binLen represents the number of bytes
|
|
int64_t binLen = static_cast<int64_t>(src.length());
|
|
const char* pos = src.c_str();
|
|
const char* end = pos + binLen;
|
|
// strLen is number of characters
|
|
int64_t strLen = cs->numchars(pos, end);
|
|
|
|
// Return the original string if start isn't within the string.
|
|
if ((start < 0) || start >= strLen)
|
|
return src;
|
|
|
|
if ((length < 0) || (length > strLen))
|
|
length = strLen;
|
|
|
|
// Convert start and length from characters to bytes.
|
|
start = cs->charpos(pos, end, start);
|
|
length = cs->charpos(pos + start, end, length);
|
|
|
|
string out;
|
|
out.reserve(binLen - length + tnewstr.length() + 1);
|
|
|
|
out.append(src.c_str(), start);
|
|
out.append(tnewstr.c_str(), tnewstr.length());
|
|
if (binLen - start - length > 0)
|
|
out.append(src.c_str() + start + length, binLen - start - length);
|
|
|
|
return out;
|
|
}
|
|
|
|
} // namespace funcexp
|