Class to read the device environment. See task QTCREATORBUG-1663

src/plugins/qt4projectmanager/qt-maemo/deviceenvreader.cpp

+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Creator.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "deviceenvreader.h"
+#include "maemorunconfiguration.h"
+
+#include <coreplugin/ssh/sshconnection.h>
+#include <coreplugin/ssh/sshremoteprocess.h>
+
+namespace Qt4ProjectManager {
+    namespace Internal {
+
+DeviceEnvReader::DeviceEnvReader(QObject *parent, MaemoRunConfiguration *config)
+    : QObject(parent)
+    , m_stop(false)
+    , m_runConfig(config)
+    , m_devConfig(config->deviceConfig())
+{
+}
+
+DeviceEnvReader::~DeviceEnvReader()
+{
+}
+
+void DeviceEnvReader::start()
+{
+    m_stop = false;
+    if (m_connection)
+        disconnect(m_connection.data(), 0, this, 0);
+    
+    const bool reuse = m_connection
+        && m_connection->state() == Core::SshConnection::Connected
+        && m_connection->connectionParameters() == m_devConfig.server;
+    
+    if (!reuse)
+        m_connection = Core::SshConnection::create();
+
+    connect(m_connection.data(), SIGNAL(connected()), this,
+        SLOT(executeRemoteCall()));
+    connect(m_connection.data(), SIGNAL(error(SshError)), this,
+        SLOT(handleConnectionFailure()));
+    
+    if (reuse)
+        executeRemoteCall();
+    else
+        m_connection->connectToHost(m_devConfig.server);
+}
+
+void DeviceEnvReader::stop()
+{
+    m_stop = true;
+    disconnect(m_connection.data(), 0, this, 0);
+
+    if (m_remoteProcess) {
+        disconnect(m_remoteProcess.data());
+        m_remoteProcess->closeChannel();
+    }
+}
+
+void DeviceEnvReader::setEnvironment()
+{
+    if (m_remoteOutput.isEmpty() && !m_runConfig.isNull())
+        return;
+    m_env = ProjectExplorer::Environment(m_remoteOutput.split(QLatin1Char('\n'),
+        QString::SkipEmptyParts));
+}
+
+void DeviceEnvReader::executeRemoteCall()
+{
+    if (m_stop)
+        return;
+
+    const QByteArray remoteCall("source ./.profile;source /etc/profile;env");
+    m_remoteProcess = m_connection->createRemoteProcess(remoteCall);
+
+    connect(m_remoteProcess.data(), SIGNAL(closed(int)), this,
+        SLOT(remoteProcessFinished(int)));
+    connect(m_remoteProcess.data(), SIGNAL(outputAvailable(QByteArray)), this,
+        SLOT(remoteOutput(QByteArray)));
+    connect(m_remoteProcess.data(), SIGNAL(errorOutputAvailable(QByteArray)), this,
+        SLOT(remoteErrorOutput(QByteArray)));
+
+    m_remoteOutput.clear();
+    m_remoteProcess->start();
+}
+
+void DeviceEnvReader::handleConnectionFailure()
+{
+    emit error(tr("Could not connect to host: %1")
+        .arg(m_connection->errorString()));
+    emit finished();
+}
+
+void DeviceEnvReader::remoteProcessFinished(int exitCode)
+{
+    Q_ASSERT(exitCode == Core::SshRemoteProcess::FailedToStart
+        || exitCode == Core::SshRemoteProcess::KilledBySignal
+        || exitCode == Core::SshRemoteProcess::ExitedNormally);
+
+    if (m_stop)
+        return;
+
+    if (exitCode == Core::SshRemoteProcess::ExitedNormally) {
+        setEnvironment();
+    } else {
+        emit error(tr("Error running remote process: %1")
+            .arg(m_remoteProcess->errorString()));
+    }
+    emit finished();
+}
+
+void DeviceEnvReader::remoteOutput(const QByteArray &data)
+{
+    m_remoteOutput.append(QString::fromUtf8(data));
+}
+
+void DeviceEnvReader::remoteErrorOutput(const QByteArray &data)
+{
+    emit error(data);
+}
+
+    }   // Internal
+}   // Qt4ProjectManager

src/plugins/qt4projectmanager/qt-maemo/deviceenvreader.h

+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Creator.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef DEVICEENVREADER_H
+#define DEVICEENVREADER_H
+
+#include <QtCore/QObject>
+#include <QtCore/QPointer>
+
+#include "maemodeviceconfigurations.h"
+#include <projectexplorer/environment.h>
+
+namespace Core {
+    class SshConnection;
+    class SshRemoteProcess;
+}
+
+namespace Qt4ProjectManager {
+    namespace Internal {
+
+class MaemoRunConfiguration;
+
+class DeviceEnvReader : public QObject
+{
+    Q_OBJECT
+public:
+    DeviceEnvReader(QObject *parent, MaemoRunConfiguration *config);
+    ~DeviceEnvReader();
+
+    void start();
+    void stop();
+
+    ProjectExplorer::Environment deviceEnvironment() const { return m_env; }
+
+signals:
+    void finished();
+    void error(const QString &error);
+
+private:
+    void setEnvironment();
+
+private slots:
+    void executeRemoteCall();
+    void handleConnectionFailure();
+
+    void remoteProcessFinished(int exitCode);
+    void remoteOutput(const QByteArray &data);
+    void remoteErrorOutput(const QByteArray &data);
+
+private:
+    bool m_stop;
+    QString m_remoteOutput;
+    ProjectExplorer::Environment m_env;
+
+    MaemoDeviceConfig m_devConfig;
+    QPointer<MaemoRunConfiguration> m_runConfig;
+    QSharedPointer<Core::SshConnection> m_connection;
+    QSharedPointer<Core::SshRemoteProcess> m_remoteProcess;
+};
+
+    }   // Internal
+}   // Qt4ProjectManager
+
+#endif  // DEVICEENVREADER_H

src/plugins/qt4projectmanager/qt-maemo/qt-maemo.pri

@@ -27,7 +27,8 @@ HEADERS += \
     $$PWD/maemosshrunner.h \
     $$PWD/maemodebugsupport.h \
     $$PWD/maemodeviceconfiglistmodel.h \
-    $$PWD/maemoremotemountsmodel.h
+    $$PWD/maemoremotemountsmodel.h \
+    $$PWD/deviceenvreader.h
 
 SOURCES += \
     $$PWD/maemoconfigtestdialog.cpp \
@@ -56,7 +57,8 @@ SOURCES += \
     $$PWD/maemosshrunner.cpp \
     $$PWD/maemodebugsupport.cpp \
     $$PWD/maemodeviceconfiglistmodel.cpp \
-    $$PWD/maemoremotemountsmodel.cpp
+    $$PWD/maemoremotemountsmodel.cpp \
+    $$PWD/deviceenvreader.cpp
 
 FORMS += \
     $$PWD/maemoconfigtestdialog.ui \