bool DataLoader::createTemporaryFile() {
// redirect 'git log' output to a temporary file
dataFile = new UnbufferedTemporaryFile(this);
#ifndef Q_OS_WIN32
/*
For performance reasons we would like to use a tmpfs filesystem
if available, this is normally mounted under '/tmp' in Linux.
According to Qt docs, a temporary file is placed in QDir::tempPath(),
that should be system's temporary directory. On Unix/Linux systems this
is usually /tmp; on Windows this is usually the path in the TEMP or TMP
environment variable.
But due to a bug in Qt 4.2 QDir::tempPath() is instead set to $HOME/tmp
under Unix/Linux, that is not a tmpfs filesystem.
So try to manually set the best directory for our temporary file.
*/
QDir dir("/tmp");
bool foundTmpDir = (dir.exists() && dir.isReadable());
if (foundTmpDir && dir.absolutePath() != QDir::tempPath()) {
dataFile->setFileTemplate(dir.absolutePath() + "/qt_temp");
if (!dataFile->open()) { // test for write access
delete dataFile;
dataFile = new UnbufferedTemporaryFile(this);
dbs("WARNING: directory '/tmp' is not writable, "
"fallback on Qt default one, there could "
"be a performance penalty.");
} else
dataFile->close();
}
#endif
if (!dataFile->open()) // to read the file name
return false;
setStandardOutputFile(dataFile->fileName());
dataFile->close();
return true;
}
MyProcess::MyProcess(QObject * parent) : QProcess(parent)
{
clearArguments();
setProcessChannelMode( QProcess::MergedChannels );
#if USE_TEMP_FILE
temp_file.open(); // Create temporary file
QString filename = temp_file.fileName();
setStandardOutputFile( filename );
temp_file.close();
connect(&timer, SIGNAL(timeout()), this, SLOT(readTmpFile()) );
#else
connect(this, SIGNAL(readyReadStandardOutput()), this, SLOT(readStdOut()) );
#endif
connect(this, SIGNAL(finished(int, QProcess::ExitStatus)),
this, SLOT(procFinished()) );
}
VideoQualityJob::VideoQualityJob(const QString& name, const QString& xml,
const QString& reportPath)
: MeltJob(name, xml)
, m_reportPath(reportPath)
{
QAction* action = new QAction(tr("Open"), this);
action->setToolTip(tr("Open original and encoded side-by-side in the Shotcut player"));
connect(action, SIGNAL(triggered()), this, SLOT(onOpenTiggered()));
m_successActions << action;
action = new QAction(tr("View Report"), this);
connect(action, SIGNAL(triggered()), this, SLOT(onViewReportTriggered()));
m_successActions << action;
action = new QAction(tr("Show In Folder"), this);
connect(action, SIGNAL(triggered()), this, SLOT(onShowFolderTriggered()));
m_successActions << action;
setLabel(tr("Measure %1").arg(objectName()));
setStandardOutputFile(reportPath);
}
MyProcess::MyProcess(QObject * parent) : QProcess(parent)
{
clearArguments();
setProcessChannelMode( QProcess::MergedChannels );
#if USE_TEMP_FILE
temp_file.open(); // Create temporary file
QString filename = temp_file.fileName();
setStandardOutputFile( filename );
qDebug("MyProcess::MyProcess: temporary file: %s", filename.toUtf8().data());
temp_file.close();
//connect(&temp_file, SIGNAL(readyRead()), this, SLOT(readTmpFile()) );
connect(&timer, SIGNAL(timeout()), this, SLOT(readTmpFile()) );
#else
connect(this, SIGNAL(readyReadStandardOutput()), this, SLOT(readStdOut()) );
#endif
connect(this, SIGNAL(finished(int, QProcess::ExitStatus)),
this, SLOT(procFinished()) );
// Test splitArguments
//QStringList l = MyProcess::splitArguments("-opt 1 hello \"56 67\" wssx -ios");
}
/**
* @fn setLogOutput
*/
void QueuedProcess::setLogOutput(const QString &)
{
setStandardOutputFile(logOutput(), QIODevice::Append);
}
