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114 lines
2.9 KiB
C++
114 lines
2.9 KiB
C++
/* Copyright (C) 2014 InfiniDB, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/****************************************************************************
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* $Id: func_concat_ws.cpp 3714 2013-04-18 16:29:25Z bpaul $
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*
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*
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****************************************************************************/
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#include <string>
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using namespace std;
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#include "functor_str.h"
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#include "functioncolumn.h"
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#include "utils_utf8.h"
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using namespace execplan;
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#include "rowgroup.h"
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using namespace rowgroup;
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#define STRCOLL_ENH__
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namespace funcexp
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{
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CalpontSystemCatalog::ColType Func_concat_ws::operationType(FunctionParm& fp, CalpontSystemCatalog::ColType& resultType )
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{
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// operation type is not used by this functor
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return fp[0]->data()->resultType();
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}
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string Func_concat_ws::getStrVal(Row& row,
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FunctionParm& parm,
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bool& isNull,
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CalpontSystemCatalog::ColType&)
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{
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string delim = stringValue(parm[0], row, isNull);
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if (isNull)
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return "";
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#ifdef STRCOLL_ENH__
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wstring wstr;
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size_t strwclen = utf8::idb_mbstowcs(0,delim.c_str(),0) + 1;
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wchar_t* wcbuf = (wchar_t*)alloca(strwclen * sizeof(wchar_t));
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strwclen = utf8::idb_mbstowcs(wcbuf, delim.c_str(), strwclen);
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wstring wdelim(wcbuf, strwclen);
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for ( unsigned int id = 1 ; id < parm.size() ; id++)
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{
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string tstr = stringValue(parm[id], row, isNull);
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if (isNull)
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{
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isNull = false;
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continue;
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}
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if (!wstr.empty())
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wstr += wdelim;
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size_t strwclen1 = utf8::idb_mbstowcs(0, tstr.c_str(), 0) + 1;
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wchar_t* wcbuf1 = (wchar_t*)alloca(strwclen1 * sizeof(wchar_t));
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strwclen1 = utf8::idb_mbstowcs(wcbuf1, tstr.c_str(), strwclen1);
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wstring str1(wcbuf1, strwclen1);
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wstr += str1;
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}
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size_t strmblen = utf8::idb_wcstombs(0, wstr.c_str(), 0) + 1;
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char* outbuf = (char*)alloca(strmblen * sizeof(char));
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strmblen = utf8::idb_wcstombs(outbuf, wstr.c_str(), strmblen);
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if (strmblen == 0)
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isNull = true;
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else
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isNull = false;
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return string(outbuf, strmblen);
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#else
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string str;
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for ( uint32_t i = 1 ; i < parm.size() ; i++)
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{
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str += string(stringValue(parm[i], row, isNull).c_str());
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if (isNull)
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{
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isNull = false;
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continue;
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}
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if (!str.empty() && !isNull)
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str += delim;
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}
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if (str.empty())
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isNull = true;
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else
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isNull = false;
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return str;
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#endif
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}
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} // namespace funcexp
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// vim:ts=4 sw=4:
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