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/* -*- 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/.
*/
#include <datastream.hxx>
#include <datastreamgettime.hxx>
#include <com/sun/star/frame/XLayoutManager.hpp>
#include <osl/conditn.hxx>
#include <osl/time.h>
#include <salhelper/thread.hxx>
#include <sfx2/viewfrm.hxx>
#include <tools/stream.hxx>
#include <vcl/svapp.hxx>
#include <docsh.hxx>
#include <tabvwsh.hxx>
#include <viewdata.hxx>
#include <stringutil.hxx>
#include <documentlinkmgr.hxx>
#include <o3tl/enumarray.hxx>
#include <officecfg/Office/Calc.hxx>
#include <orcus/csv_parser.hpp>
#include <atomic>
#include <queue>
namespace com::sun::star::ui { class XUIElement; }
namespace sc {
static o3tl::enumarray<DebugTime, double> fTimes { 0.0, 0.0, 0.0 };
double datastream_get_time(DebugTime nIdx)
{
return fTimes[ nIdx ];
}
namespace {
double getNow()
{
TimeValue now;
osl_getSystemTime(&now);
return static_cast<double>(now.Seconds) + static_cast<double>(now.Nanosec) / 1000000000.0;
}
class CSVHandler
{
DataStream::Line& mrLine;
size_t mnColCount;
size_t mnCols;
const char* mpLineHead;
public:
CSVHandler( DataStream::Line& rLine, size_t nColCount ) :
mrLine(rLine), mnColCount(nColCount), mnCols(0), mpLineHead(rLine.maLine.getStr()) {}
static void begin_parse() {}
static void end_parse() {}
static void begin_row() {}
static void end_row() {}
void cell(std::string_view s, bool /*transient*/)
{
if (mnCols >= mnColCount)
return;
DataStream::Cell aCell;
if (ScStringUtil::parseSimpleNumber(s.data(), s.size(), '.', ',', aCell.mfValue))
{
aCell.mbValue = true;
}
else
{
aCell.mbValue = false;
aCell.maStr.Pos = std::distance(mpLineHead, s.data());
aCell.maStr.Size = s.size();
}
mrLine.maCells.push_back(aCell);
++mnCols;
}
};
}
namespace datastreams {
class ReaderThread : public salhelper::Thread
{
std::unique_ptr<SvStream> mpStream;
size_t mnColCount;
std::atomic<bool> mbTerminate;
std::queue<DataStream::LinesType> maPendingLines;
std::queue<DataStream::LinesType> maUsedLines;
std::mutex maMtxLines;
osl::Condition maCondReadStream;
osl::Condition maCondConsume;
orcus::csv::parser_config maConfig;
public:
ReaderThread(std::unique_ptr<SvStream> pData, size_t nColCount):
Thread("ReaderThread"),
mpStream(std::move(pData)),
mnColCount(nColCount),
mbTerminate(false)
{
maConfig.delimiters.push_back(',');
maConfig.text_qualifier = '"';
}
bool isTerminateRequested()
{
return mbTerminate.load();
}
void requestTerminate()
{
mbTerminate.store(true);
}
void endThread()
{
requestTerminate();
maCondReadStream.set();
}
void waitForNewLines()
{
maCondConsume.wait();
maCondConsume.reset();
}
DataStream::LinesType popNewLines()
{
auto pLines = std::move(maPendingLines.front());
maPendingLines.pop();
return pLines;
}
void resumeReadStream()
{
if (maPendingLines.size() <= 4)
maCondReadStream.set(); // start producer again
}
bool hasNewLines() const
{
return !maPendingLines.empty();
}
void pushUsedLines( DataStream::LinesType pLines )
{
maUsedLines.push(std::move(pLines));
}
std::mutex& getLinesMutex()
{
return maMtxLines;
}
private:
virtual void execute() override
{
while (!isTerminateRequested())
{
std::optional<DataStream::LinesType> oLines;
std::unique_lock aGuard(maMtxLines);
if (!maUsedLines.empty())
{
// Re-use lines from previous runs.
oLines = std::move(maUsedLines.front());
maUsedLines.pop();
aGuard.unlock(); // unlock
}
else
{
aGuard.unlock(); // unlock
oLines.emplace(10);
}
// Read & store new lines from stream.
for (DataStream::Line & rLine : *oLines)
{
rLine.maCells.clear();
mpStream->ReadLine(rLine.maLine);
CSVHandler aHdl(rLine, mnColCount);
orcus::csv_parser<CSVHandler> parser(rLine.maLine.getStr(), aHdl, maConfig);
parser.parse();
}
aGuard.lock(); // lock
while (!isTerminateRequested() && maPendingLines.size() >= 8)
{
// pause reading for a bit
aGuard.unlock(); // unlock
maCondReadStream.wait();
maCondReadStream.reset();
aGuard.lock(); // lock
}
maPendingLines.push(std::move(*oLines));
maCondConsume.set();
if (!mpStream->good())
requestTerminate();
}
}
};
}
DataStream::Cell::Cell() : mfValue(0.0), mbValue(true) {}
DataStream::Cell::Cell( const Cell& r ) : mbValue(r.mbValue)
{
if (r.mbValue)
mfValue = r.mfValue;
else
{
maStr.Pos = r.maStr.Pos;
maStr.Size = r.maStr.Size;
}
}
void DataStream::MakeToolbarVisible()
{
ScViewData* pViewData = ScDocShell::GetViewData();
if (!pViewData)
return;
css::uno::Reference< css::frame::XFrame > xFrame =
pViewData->GetViewShell()->GetViewFrame().GetFrame().GetFrameInterface();
if (!xFrame.is())
return;
css::uno::Reference< css::beans::XPropertySet > xPropSet(xFrame, css::uno::UNO_QUERY);
if (!xPropSet.is())
return;
css::uno::Reference< css::frame::XLayoutManager > xLayoutManager;
xPropSet->getPropertyValue("LayoutManager") >>= xLayoutManager;
if (!xLayoutManager.is())
return;
static const OUStringLiteral sResourceURL( u"private:resource/toolbar/datastreams" );
css::uno::Reference< css::ui::XUIElement > xUIElement = xLayoutManager->getElement(sResourceURL);
if (!xUIElement.is())
{
xLayoutManager->createElement( sResourceURL );
xLayoutManager->showElement( sResourceURL );
}
}
DataStream* DataStream::Set(
ScDocShell *pShell, const OUString& rURL, const ScRange& rRange,
sal_Int32 nLimit, MoveType eMove, sal_uInt32 nSettings)
{
DataStream* pLink = new DataStream(pShell, rURL, rRange, nLimit, eMove, nSettings);
sc::DocumentLinkManager& rMgr = pShell->GetDocument().GetDocLinkManager();
rMgr.setDataStream(pLink);
return pLink;
}
DataStream::DataStream(ScDocShell *pShell, const OUString& rURL, const ScRange& rRange,
sal_Int32 nLimit, MoveType eMove, sal_uInt32 nSettings) :
mpDocShell(pShell),
maDocAccess(mpDocShell->GetDocument()),
meOrigMove(NO_MOVE),
meMove(NO_MOVE),
mbRunning(false),
mbValuesInLine(false),
mbRefreshOnEmptyLine(false),
mnLinesCount(0),
mnLinesSinceRefresh(0),
mfLastRefreshTime(0.0),
mnCurRow(0),
maImportTimer("sc DataStream maImportTimer"),
mbIsFirst(true),
mbIsUpdate(false)
{
maImportTimer.SetTimeout(0);
maImportTimer.SetInvokeHandler( LINK(this, DataStream, ImportTimerHdl) );
Decode(rURL, rRange, nLimit, eMove, nSettings);
}
DataStream::~DataStream()
{
if (mbRunning)
StopImport();
if (mxReaderThread.is())
{
mxReaderThread->endThread();
mxReaderThread->join();
}
moLines.reset();
}
DataStream::Line DataStream::ConsumeLine()
{
if (!moLines || mnLinesCount >= moLines->size())
{
mnLinesCount = 0;
if (mxReaderThread->isTerminateRequested())
return Line();
std::unique_lock aGuard(mxReaderThread->getLinesMutex());
if (moLines)
{
mxReaderThread->pushUsedLines(std::move(*moLines));
moLines.reset();
}
while (!mxReaderThread->hasNewLines())
{
aGuard.unlock(); // unlock
mxReaderThread->waitForNewLines();
aGuard.lock(); // lock
}
moLines = mxReaderThread->popNewLines();
mxReaderThread->resumeReadStream();
}
return moLines->at(mnLinesCount++);
}
ScRange DataStream::GetRange() const
{
ScRange aRange = maStartRange;
aRange.aEnd = maEndRange.aEnd;
return aRange;
}
void DataStream::Decode(const OUString& rURL, const ScRange& rRange,
sal_Int32 nLimit, MoveType eMove, const sal_uInt32 nSettings)
{
msURL = rURL;
meMove = eMove;
meOrigMove = eMove;
mnSettings = nSettings;
mbValuesInLine = true; // always true.
mnCurRow = rRange.aStart.Row();
ScRange aRange = rRange;
if (aRange.aStart.Row() != aRange.aEnd.Row())
// We only allow this range to be one row tall.
aRange.aEnd.SetRow(aRange.aStart.Row());
maStartRange = aRange;
maEndRange = aRange;
const auto & rDoc = mpDocShell->GetDocument();
if (nLimit == 0)
{
// Unlimited
maEndRange.aStart.SetRow(rDoc.MaxRow());
}
else if (nLimit > 0)
{
// Limited.
maEndRange.aStart.IncRow(nLimit-1);
if (maEndRange.aStart.Row() > rDoc.MaxRow())
maEndRange.aStart.SetRow(rDoc.MaxRow());
}
maEndRange.aEnd.SetRow(maEndRange.aStart.Row());
}
void DataStream::StartImport()
{
if (mbRunning)
return;
if (!mxReaderThread.is())
{
std::unique_ptr<SvStream> pStream(new SvFileStream(msURL, StreamMode::READ));
mxReaderThread = new datastreams::ReaderThread(std::move(pStream), maStartRange.aEnd.Col() - maStartRange.aStart.Col() + 1);
mxReaderThread->launch();
}
mbRunning = true;
maDocAccess.reset();
maImportTimer.Start();
}
void DataStream::StopImport()
{
if (!mbRunning)
return;
mbRunning = false;
Refresh();
maImportTimer.Stop();
}
void DataStream::SetRefreshOnEmptyLine( bool bVal )
{
mbRefreshOnEmptyLine = bVal;
}
void DataStream::Refresh()
{
Application::Yield();
double fStart = getNow();
// Hard recalc will repaint the grid area.
mpDocShell->DoHardRecalc();
mpDocShell->SetDocumentModified();
fTimes[ DebugTime::Recalc ] = getNow() - fStart;
mfLastRefreshTime = getNow();
mnLinesSinceRefresh = 0;
}
void DataStream::MoveData()
{
switch (meMove)
{
case RANGE_DOWN:
{
if (mnCurRow == maEndRange.aStart.Row())
meMove = MOVE_UP;
}
break;
case MOVE_UP:
{
mbIsUpdate = true;
// Remove the top row and shift the remaining rows upward. Then
// insert a new row at the end row position.
ScRange aRange = maStartRange;
aRange.aEnd = maEndRange.aEnd;
maDocAccess.shiftRangeUp(aRange);
}
break;
case MOVE_DOWN:
{
mbIsUpdate = true;
// Remove the end row and shift the remaining rows downward by
// inserting a new row at the top row.
ScRange aRange = maStartRange;
aRange.aEnd = maEndRange.aEnd;
maDocAccess.shiftRangeDown(aRange);
}
break;
case NO_MOVE:
default:
;
}
if(mbIsFirst && mbIsUpdate)
{
sal_Int32 nStreamTimeout = officecfg::Office::Calc::DataStream::UpdateTimeout::get();
maImportTimer.SetTimeout(nStreamTimeout);
mbIsFirst = false;
}
}
void DataStream::Text2Doc()
{
Line aLine = ConsumeLine();
if (aLine.maCells.empty() && mbRefreshOnEmptyLine)
{
// Empty line detected. Trigger refresh and discard it.
Refresh();
return;
}
double fStart = getNow();
MoveData();
{
SCCOL nCol = maStartRange.aStart.Col();
const char* pLineHead = aLine.maLine.getStr();
for (const Cell& rCell : aLine.maCells)
{
if (rCell.mbValue)
{
maDocAccess.setNumericCell(
ScAddress(nCol, mnCurRow, maStartRange.aStart.Tab()), rCell.mfValue);
}
else
{
maDocAccess.setStringCell(
ScAddress(nCol, mnCurRow, maStartRange.aStart.Tab()),
OUString(pLineHead+rCell.maStr.Pos, rCell.maStr.Size, RTL_TEXTENCODING_UTF8));
}
++nCol;
}
}
fTimes[ DebugTime::Import ] = getNow() - fStart;
if (meMove == NO_MOVE)
return;
if (meMove == RANGE_DOWN)
{
++mnCurRow;
// mpDocShell->GetViewData().GetView()->AlignToCursor(
// maStartRange.aStart.Col(), mnCurRow, SC_FOLLOW_JUMP);
}
if (getNow() - mfLastRefreshTime > 0.1 && mnLinesSinceRefresh > 200)
// Refresh no more frequently than every 0.1 second, and wait until at
// least we have processed 200 lines.
Refresh();
++mnLinesSinceRefresh;
}
bool DataStream::ImportData()
{
if (!mbValuesInLine)
// We no longer support this mode. To be deleted later.
return false;
ScViewData* pViewData = ScDocShell::GetViewData();
if (!pViewData)
return false;
if (pViewData->GetViewShell()->NeedsRepaint())
return mbRunning;
Text2Doc();
return mbRunning;
}
IMPL_LINK_NOARG(DataStream, ImportTimerHdl, Timer *, void)
{
if (ImportData())
maImportTimer.Start();
}
} // namespace sc
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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