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402 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "rowinputbinary.hxx"
#include <com/sun/star/sdbc/DataType.hpp>
#include <com/sun/star/io/WrongFormatException.hpp>
#include <com/sun/star/util/Time.hpp>
#include <com/sun/star/util/Date.hpp>
#include <com/sun/star/util/DateTime.hpp>
#include <unotools/ucbstreamhelper.hxx>
#include <tools/stream.hxx>
#include <rtl/ustrbuf.hxx>
#include <boost/date_time/posix_time/posix_time.hpp>
namespace
{
/**
* Converts binary represented big integer value to BCD (Binary Coded
* Decimal), and returns a string representation of the number.
*
* Bytes[0] is the most significant part of the number.
*/
OUString lcl_double_dabble(const std::vector<sal_uInt8>& bytes)
{
size_t nbits = 8 * bytes.size(); // length of array in bits
size_t nscratch = nbits / 2; // length of scratch in bytes
std::vector<char> scratch(nscratch, 0);
for (size_t i = 0; i < bytes.size(); ++i)
{
for (size_t j = 0; j < 8; ++j)
{
/* This bit will be shifted in on the right. */
int shifted_in = (bytes[i] & (1 << (7 - j))) ? 1 : 0;
/* Add 3 everywhere that scratch[k] >= 5. */
for (size_t k = 0; k < nscratch; ++k)
scratch[k] += (scratch[k] >= 5) ? 3 : 0;
/* Shift scratch to the left by one position. */
for (size_t k = 0; k < nscratch - 1; ++k)
{
scratch[k] <<= 1;
scratch[k] &= 0xF;
scratch[k] |= (scratch[k + 1] >= 8) ? 1 : 0;
}
/* Shift in the new bit from arr. */
scratch[nscratch - 1] <<= 1;
scratch[nscratch - 1] &= 0xF;
scratch[nscratch - 1] |= shifted_in;
}
}
auto it = scratch.begin();
/* Remove leading zeros from the scratch space. */
while (*it == 0 && scratch.size() > 1)
{
it = scratch.erase(it);
}
/* Convert the scratch space from BCD digits to ASCII. */
for (auto& digit : scratch)
digit += '0';<--- Consider using std::transform algorithm instead of a raw loop.
/* Resize and return the resulting string. */
return OStringToOUString(OString(scratch.data(), scratch.size()), RTL_TEXTENCODING_UTF8);
}
OUString lcl_makeStringFromBigint(const std::vector<sal_uInt8>& bytes)
{
std::vector<sal_uInt8> aBytes{ bytes };
OUStringBuffer sRet;
// two's complement
if ((aBytes[0] & 0x80) != 0)
{
sRet.append("-");
for (auto& byte : aBytes)
byte = ~byte;<--- Consider using std::transform algorithm instead of a raw loop.
// add 1 to byte array
// FIXME e.g. 10000 valid ?
for (size_t i = aBytes.size() - 1; i != 0; --i)
{
aBytes[i] += 1;
if (aBytes[i] != 0)
break;
}
}
// convert binary to BCD
OUString sNum = lcl_double_dabble(aBytes);
sRet.append(sNum);
return sRet.makeStringAndClear();
}
OUString lcl_putDot(const OUString& sNum, sal_Int32 nScale)
{
// e.g. sNum = "0", nScale = 2 -> "0.00"
OUStringBuffer sBuf{ sNum };
sal_Int32 nNullsToAppend = nScale - sNum.getLength() + 1;
for (sal_Int32 i = 0; i < nNullsToAppend; ++i)
sBuf.insert(0, "0");
if (nScale > 0)
sBuf.insert(sBuf.getLength() - 1 - nScale, ".");
return sBuf.makeStringAndClear();
}
}
namespace dbahsql
{
using namespace css::uno;
using namespace css::sdbc;
using namespace css::io;
using namespace boost::posix_time;
using namespace boost::gregorian;
HsqlRowInputStream::HsqlRowInputStream() {}
void HsqlRowInputStream::setInputStream(Reference<XInputStream> const& rStream)
{
m_pStream = utl::UcbStreamHelper::CreateStream(rStream, true);
m_pStream->SetEndian(SvStreamEndian::BIG);
}
SvStream* HsqlRowInputStream::getInputStream() const { return m_pStream.get(); }
void HsqlRowInputStream::seek(sal_Int32 nPos) { m_pStream->Seek(nPos); }
OUString HsqlRowInputStream::readString()
{
sal_Int32 nLen = 0;
m_pStream->ReadInt32(nLen);
return readUTF(nLen);
}
OUString HsqlRowInputStream::readUTF(sal_Int32 nUTFLen)
{
Sequence<sal_Unicode> aBuffer(nUTFLen);
sal_Unicode* pStr = aBuffer.getArray();
sal_Int32 nCount = 0;
sal_Int32 nStrLen = 0;
while (nCount < nUTFLen)
{
unsigned char cIn = 0;
m_pStream->ReadUChar(cIn);
sal_uInt8 c = reinterpret_cast<sal_uInt8&>(cIn);
sal_uInt8 char2, char3;
switch (c >> 4)
{
case 0:
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
// 0xxxxxxx
nCount++;
pStr[nStrLen++] = c;
break;
case 12:
case 13:
// 110x xxxx 10xx xxxx
nCount += 2;
if (nCount > nUTFLen)
{
throw WrongFormatException();
}
m_pStream->ReadUChar(cIn);
char2 = reinterpret_cast<sal_uInt8&>(cIn);
if ((char2 & 0xC0) != 0x80)
{
throw WrongFormatException();
}
pStr[nStrLen++] = (sal_Unicode(c & 0x1F) << 6) | (char2 & 0x3F);
break;
case 14:
// 1110 xxxx 10xx xxxx 10xx xxxx
nCount += 3;
if (nCount > nUTFLen)
{
throw WrongFormatException();
}
m_pStream->ReadUChar(cIn);
char2 = reinterpret_cast<sal_uInt8&>(cIn);
m_pStream->ReadUChar(cIn);
char3 = reinterpret_cast<sal_uInt8&>(cIn);
if (((char2 & 0xC0) != 0x80) || ((char3 & 0xC0) != 0x80))
{
throw WrongFormatException();
}
pStr[nStrLen++] = (sal_Unicode(c & 0x0F) << 12) | (sal_Unicode(char2 & 0x3F) << 6)
| (char3 & 0x3F);
break;
default:
// 10xx xxxx, 1111 xxxx
throw WrongFormatException();
}
}
return OUString(pStr, nStrLen);
}
bool HsqlRowInputStream::checkNull()
{
unsigned char cIn = 0;
m_pStream->ReadUChar(cIn);
sal_uInt8 nNull = reinterpret_cast<sal_uInt8&>(cIn);
return nNull == 0;
}
std::vector<Any> HsqlRowInputStream::readOneRow(const std::vector<ColumnDefinition>& nColTypes)
{
auto nLen = nColTypes.size();
std::vector<Any> aData;
for (size_t i = 0; i < nLen; ++i)
{
if (checkNull())
{
aData.push_back(Any());
continue;
}
sal_Int32 nType = nColTypes[i].getDataType();
// TODO throw error on EoF
switch (nType)
{
case DataType::CHAR:
case DataType::VARCHAR:
case DataType::LONGVARCHAR:
aData.push_back(makeAny(readString()));
break;
case DataType::TINYINT:
case DataType::SMALLINT:
{
sal_Int16 value = 0;
m_pStream->ReadInt16(value);
aData.push_back(makeAny(value));
}
break;
case DataType::INTEGER:
{
sal_Int32 value = 0;
m_pStream->ReadInt32(value);
aData.push_back(makeAny(value));
}
break;
case DataType::BIGINT:
{
sal_Int64 value = 0;
m_pStream->ReadInt64(value);
aData.push_back(makeAny(value));
}
break;
case DataType::REAL:
case DataType::FLOAT:
case DataType::DOUBLE:
{
double value = 0;
m_pStream->ReadDouble(value);
// FIXME double is not necessarily 4 bytes
aData.push_back(makeAny(value));
}
break;
case DataType::NUMERIC:
case DataType::DECIMAL:
{
sal_Int32 nSize = 0;
m_pStream->ReadInt32(nSize);
std::vector<sal_uInt8> aBytes(nSize);
m_pStream->ReadBytes(aBytes.data(), nSize);
assert(aBytes.size() > 0);
sal_Int32 nScale = 0;
m_pStream->ReadInt32(nScale);
Sequence<Any> result(2);
OUString sNum = lcl_makeStringFromBigint(aBytes);
result[0] <<= lcl_putDot(sNum, nScale);
result[1] <<= nScale;
aData.push_back(makeAny(result));
}
break;
case DataType::DATE:
{
sal_Int64 value = 0;
m_pStream->ReadInt64(value); // in millisec, from 1970
ptime epoch = time_from_string("1970-01-01 00:00:00.000");
ptime time = epoch + milliseconds(value);
date asDate = time.date();
css::util::Date loDate(asDate.day(), asDate.month(),
asDate.year()); // day, month, year
aData.push_back(makeAny(loDate));
}
break;
case DataType::TIME:
{
sal_Int64 value = 0;
m_pStream->ReadInt64(value);
auto valueInSecs = value / 1000;
/* Observed valueInSecs fall in the range from
negative one day to positive two days. Coerce
valueInSecs between zero and positive one day.*/
const int secPerDay = 24 * 60 * 60;
valueInSecs = (valueInSecs + secPerDay) % secPerDay;
auto nHours = valueInSecs / (60 * 60);
valueInSecs = valueInSecs % 3600;
const sal_uInt16 nMins = valueInSecs / 60;
const sal_uInt16 nSecs = valueInSecs % 60;
css::util::Time time((value % 1000) * 1000000, nSecs, nMins, nHours, true);
aData.push_back(makeAny(time));
}
break;
case DataType::TIMESTAMP:
{
sal_Int64 nEpochMillis = 0;
m_pStream->ReadInt64(nEpochMillis);
ptime epoch = time_from_string("1970-01-01 00:00:00.000");
ptime time = epoch + milliseconds(nEpochMillis);
date asDate = time.date();
sal_Int32 nNanos = 0;
m_pStream->ReadInt32(nNanos);
// convert into LO internal representation of dateTime
css::util::DateTime dateTime;
dateTime.NanoSeconds = nNanos;
dateTime.Seconds = time.time_of_day().seconds();
dateTime.Minutes = time.time_of_day().minutes();
dateTime.Hours = time.time_of_day().hours();
dateTime.Day = asDate.day();
dateTime.Month = asDate.month();
dateTime.Year = asDate.year();
aData.push_back(makeAny(dateTime));
}
break;
case DataType::BOOLEAN:
{
sal_uInt8 nBool = 0;
m_pStream->ReadUChar(nBool);
aData.push_back(makeAny(static_cast<bool>(nBool)));
}
break;
case DataType::OTHER:
aData.push_back(Any{}); // TODO
break;
case DataType::BINARY:
case DataType::VARBINARY:
case DataType::LONGVARBINARY:
{
sal_Int32 nSize = 0;
m_pStream->ReadInt32(nSize);
Sequence<sal_Int8> aBytes(nSize);
m_pStream->ReadBytes(aBytes.getArray(), nSize);
aData.push_back(makeAny(aBytes));
}
break;
default:
throw WrongFormatException();
}
}
return aData;
}
} // namespace dbahsql
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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