File indexing completed on 2024-05-05 11:55:58

 /*
     SPDX-License-Identifier: GPL-2.0-or-later
     SPDX-FileCopyrightText: 2009 Alexander Rieder <alexanderrieder@gmail.com>
     SPDX-FileCopyrightText: 2018 Alexander Semke <alexander.semke@web.de>
 */
 
 #include "rsession.h"
 #include "rexpression.h"
 #include "rcompletionobject.h"
 #include "rhighlighter.h"
 #include "rvariablemodel.h"
 #include <defaultvariablemodel.h>
 
 #include <QTimer>
 #include <QDebug>
 #include <KProcess>
 
 #ifndef Q_OS_WIN
 #include <signal.h>
 #endif
 
 RSession::RSession(Cantor::Backend* backend) : Session(backend),
 m_process(nullptr),
 m_rServer(nullptr)
 {
     setVariableModel(new RVariableModel(this));
 }
 
 RSession::~RSession()
 {
     if (m_process)
         m_process->terminate();
 }
 
 void RSession::login()
 {
     qDebug()<<"login";
     if (m_process)
         return;
     emit loginStarted();
 
     m_process = new QProcess(this);
     m_process->setProcessChannelMode(QProcess::ForwardedErrorChannel);
 #ifdef Q_OS_WIN
     m_process->start(QStandardPaths::findExecutable(QLatin1String("cantor_rserver.exe")));
 #else
     m_process->start(QStandardPaths::findExecutable(QLatin1String("cantor_rserver")));
 #endif
 
     m_process->waitForStarted();
     m_process->waitForReadyRead();
     qDebug()<<m_process->readAllStandardOutput();
 
     m_rServer = new org::kde::Cantor::R(QString::fromLatin1("org.kde.Cantor.R-%1").arg(m_process->processId()),  QLatin1String("/"), QDBusConnection::sessionBus(), this);
 
     connect(m_rServer, &org::kde::Cantor::R::statusChanged, this, &RSession::serverChangedStatus);
     connect(m_rServer,  &org::kde::Cantor::R::expressionFinished, this, &RSession::expressionFinished);
     connect(m_rServer, &org::kde::Cantor::R::inputRequested, this, &RSession::inputRequested);
 
     changeStatus(Session::Done);
     emit loginDone();
     qDebug()<<"login done";
 }
 
 void RSession::logout()
 {
     qDebug()<<"logout";
     if (!m_process)
         return;
 
     if(status() == Cantor::Session::Running)
         interrupt();
 
     m_process->kill();
     m_process->deleteLater();
     m_process = nullptr;
 
     Session::logout();
 }
 
 void RSession::interrupt()
 {
     if(!expressionQueue().isEmpty())
     {
         qDebug()<<"interrupting " << expressionQueue().first()->command();
         if(m_process && m_process->state() != QProcess::NotRunning)
         {
 #ifndef Q_OS_WIN
             const int pid = m_process->processId();
             kill(pid, SIGINT);
 #else
             ; //TODO: interrupt the process on windows
 #endif
         }
         for (auto* expression : expressionQueue())
             expression->setStatus(Cantor::Expression::Interrupted);
         expressionQueue().clear();
 
         qDebug()<<"done interrupting";
     }
 
     changeStatus(Cantor::Session::Done);
 }
 
 Cantor::Expression* RSession::evaluateExpression(const QString& cmd, Cantor::Expression::FinishingBehavior behave, bool internal)
 {
     qDebug()<<"evaluating: "<<cmd;
     auto* expr = new RExpression(this, internal);
     expr->setFinishingBehavior(behave);
     expr->setCommand(cmd);
 
     expr->evaluate();
 
     return expr;
 }
 
 Cantor::CompletionObject* RSession::completionFor(const QString& command, int index)
 {
     auto* cmp = new RCompletionObject(command, index, this);
     return cmp;
 }
 
 QSyntaxHighlighter* RSession::syntaxHighlighter(QObject* parent)
 {
     return new RHighlighter(parent, this);
 }
 
 void RSession::serverChangedStatus(int status)
 {
     qDebug()<<"changed status to "<<status;
     if(status==0)
     {
         if(expressionQueue().isEmpty())
             changeStatus(Cantor::Session::Done);
     }
     else
         changeStatus(Cantor::Session::Running);
 }
 
 void RSession::expressionFinished(int returnCode, const QString& text, const QStringList& files)
 {
     if (!expressionQueue().isEmpty())
     {
         auto* expr = expressionQueue().first();
         if (expr->status() == Cantor::Expression::Interrupted)
             return;
 
         static_cast<RExpression*>(expr)->showFilesAsResult(files);
 
         if(returnCode==RExpression::SuccessCode)
             expr->parseOutput(text);
         else if (returnCode==RExpression::ErrorCode)
             expr->parseError(text);
 
         qDebug()<<"done running "<<expr<<" "<<expr->command();
         finishFirstExpression();
     }
 }
 
 void RSession::runFirstExpression()
 {
     if (expressionQueue().isEmpty())
         return;
 
     auto* expr = expressionQueue().first();
     qDebug()<<"running expression: "<<expr->command();
 
     expr->setStatus(Cantor::Expression::Computing);
     m_rServer->runCommand(expr->internalCommand(), expr->isInternal());
     changeStatus(Cantor::Session::Running);
 }
 
 void RSession::sendInputToServer(const QString& input)
 {
     QString s = input;
     if(!input.endsWith(QLatin1Char('\n')))
         s += QLatin1Char('\n');
     m_rServer->answerRequest(s);
 }
 
 void RSession::inputRequested(QString info)
 {
     if (expressionQueue().isEmpty())
         return;
 
     emit expressionQueue().first()->needsAdditionalInformation(info);
 }