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This commit is contained in:
Leonid Fedorov
2022-01-21 16:43:49 +00:00
parent 6b6411229f
commit 04752ec546
1376 changed files with 393460 additions and 412662 deletions
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165
utils/funcexp/func_lpad.cpp
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@ -16,10 +16,10 @@
MA 02110-1301, USA. */
/****************************************************************************
* $Id: func_lpad.cpp 3923 2013-06-19 21:43:06Z bwilkinson $
*
*
****************************************************************************/
* $Id: func_lpad.cpp 3923 2013-06-19 21:43:06Z bwilkinson $
*
*
****************************************************************************/
#include "errorids.h"
#include <string>
@ -41,95 +41,90 @@ namespace funcexp
{
const string Func_lpad::fPad = " ";
CalpontSystemCatalog::ColType Func_lpad::operationType(FunctionParm& fp, CalpontSystemCatalog::ColType& resultType)
CalpontSystemCatalog::ColType Func_lpad::operationType(FunctionParm& fp,
CalpontSystemCatalog::ColType& resultType)
{
// operation type is not used by this functor
return fp[0]->data()->resultType();
// operation type is not used by this functor
return fp[0]->data()->resultType();
}
std::string Func_lpad::getStrVal(rowgroup::Row& row,
FunctionParm& fp,
bool& isNull,
std::string Func_lpad::getStrVal(rowgroup::Row& row, FunctionParm& fp, bool& isNull,
execplan::CalpontSystemCatalog::ColType& type)
{
CHARSET_INFO* cs = type.getCharset();
// The original string
const string& src = fp[0]->data()->getStrVal(row, isNull);
if (isNull)
return "";
if (src.empty() || src.length() == 0)
return src;
// binLen represents the number of bytes in src
size_t binLen = src.length();
const char* pos = src.c_str();
const char* end = pos + binLen;
// strLen = the number of characters in src
size_t strLen = cs->numchars(pos, end);
CHARSET_INFO* cs = type.getCharset();
// The original string
const string& src = fp[0]->data()->getStrVal(row, isNull);
if (isNull)
return "";
if (src.empty() || src.length() == 0)
return src;
// binLen represents the number of bytes in src
size_t binLen = src.length();
const char* pos = src.c_str();
const char* end = pos + binLen;
// strLen = the number of characters in src
size_t strLen = cs->numchars(pos, end);
// In the case where someone entered pad length as a quoted string,
// it may be interpreted by columnstore to be an actual string
// and stored in fResult.int as a htonl of that string,
// However fResult.double is always correct, so we'll use that.
size_t padLength = (size_t)fp[1]->data()->getDoubleVal(row, isNull);
if (isNull || padLength <= 0)
return "";
if (padLength > (size_t)INT_MAX32)
padLength = (size_t)INT_MAX32;
if (padLength < strLen)
{
binLen = cs->charpos(pos, end, padLength);
std::string ret(pos, binLen);
return ret;
}
// In the case where someone entered pad length as a quoted string,
// it may be interpreted by columnstore to be an actual string
// and stored in fResult.int as a htonl of that string,
// However fResult.double is always correct, so we'll use that.
size_t padLength = (size_t)fp[1]->data()->getDoubleVal(row, isNull);
if (isNull || padLength <= 0)
return "";
if (padLength > (size_t)INT_MAX32)
padLength = (size_t)INT_MAX32;
// The pad characters.
const string* pad = &fPad; // Defaults to space
if (fp.size() > 2)
{
pad = &fp[2]->data()->getStrVal(row, isNull);
}
// binPLen represents the number of bytes in pad
size_t binPLen = pad->length();
const char* posP = pad->c_str();
// plen = the number of characters in pad
size_t plen = cs->numchars(posP, posP+binPLen);
if (plen == 0)
return src;
size_t byteCount = (padLength+1) * cs->mbmaxlen; // absolute maximun number of bytes
char* buf = new char[byteCount];
char* pBuf = buf;
padLength -= strLen;
byteCount = 0;
while (padLength >= plen)
{
memcpy(pBuf, posP, binPLen);
padLength -= plen;
byteCount += binPLen;
pBuf += binPLen;
}
// Sometimes, in a case with multi-char pad, we need to add a partial pad
if (padLength > 0)
{
size_t partialSize = cs->charpos(posP, posP+binPLen, padLength);
memcpy(pBuf, posP, partialSize);
byteCount += partialSize;
pBuf += partialSize;
}
memcpy(pBuf, pos, binLen);
byteCount += binLen;
std::string ret(buf, byteCount);
delete [] buf;
if (padLength < strLen)
{
binLen = cs->charpos(pos, end, padLength);
std::string ret(pos, binLen);
return ret;
}
// The pad characters.
const string* pad = &fPad; // Defaults to space
if (fp.size() > 2)
{
pad = &fp[2]->data()->getStrVal(row, isNull);
}
// binPLen represents the number of bytes in pad
size_t binPLen = pad->length();
const char* posP = pad->c_str();
// plen = the number of characters in pad
size_t plen = cs->numchars(posP, posP + binPLen);
if (plen == 0)
return src;
size_t byteCount = (padLength + 1) * cs->mbmaxlen; // absolute maximun number of bytes
char* buf = new char[byteCount];
char* pBuf = buf;
padLength -= strLen;
byteCount = 0;
while (padLength >= plen)
{
memcpy(pBuf, posP, binPLen);
padLength -= plen;
byteCount += binPLen;
pBuf += binPLen;
}
// Sometimes, in a case with multi-char pad, we need to add a partial pad
if (padLength > 0)
{
size_t partialSize = cs->charpos(posP, posP + binPLen, padLength);
memcpy(pBuf, posP, partialSize);
byteCount += partialSize;
pBuf += partialSize;
}
memcpy(pBuf, pos, binLen);
byteCount += binLen;
std::string ret(buf, byteCount);
delete[] buf;
return ret;
}
} // namespace funcexp
} // namespace funcexp
// vim:ts=4 sw=4: