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/**************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
**************************************************************************/
#include "uninstallercalculator.h"
#include "component.h"
#include "packagemanagercore.h"
#include "globals.h"
#include <QDebug>
namespace QInstaller {
UninstallerCalculator::UninstallerCalculator(const QList<Component *> &installedComponents)
: m_installedComponents(installedComponents)
{
}
QSet<Component *> UninstallerCalculator::componentsToUninstall() const
{
return m_componentsToUninstall;
}
bool UninstallerCalculator::appendComponentToUninstall(Component *component)
{
if (!component)
return false;
PackageManagerCore *core = component->packageManagerCore();
// remove all already resolved dependees
QSet<Component *> dependees = core->dependees(component).toSet()
.subtract(m_componentsToUninstall);
if (dependees.isEmpty()) {
component->setCheckState(Qt::Unchecked);
m_componentsToUninstall.insert(component);
return true;
}
QSet<Component *> dependeesToResolve;
foreach (Component *dependee, dependees) {
if (dependee->isInstalled()) {
// keep them as already resolved
dependee->setCheckState(Qt::Unchecked);
m_componentsToUninstall.insert(dependee);
// gather possible dependees, keep them to resolve it later
dependeesToResolve.unite(core->dependees(dependee).toSet());
}
}
bool allResolved = true;
foreach (Component *dependee, dependeesToResolve)
allResolved &= appendComponentToUninstall(dependee);
return allResolved;
}
bool UninstallerCalculator::appendComponentsToUninstall(const QList<Component*> &components)
{
if (components.isEmpty()) {
qDebug() << "components list is empty in" << Q_FUNC_INFO;
return true;
}
bool allResolved = true;
foreach (Component *component, components) {
if (component->isInstalled()) {
component->setCheckState(Qt::Unchecked);
m_componentsToUninstall.insert(component);
allResolved &= appendComponentToUninstall(component);
}
}
QList<Component*> autoDependOnList;
if (allResolved) {
// All regular dependees are resolved. Now we are looking for auto depend on components.
foreach (Component *component, m_installedComponents) {
// If a components is installed and not yet scheduled for un-installation, check for auto depend.
if (component->isInstalled() && !m_componentsToUninstall.contains(component)) {
QStringList autoDependencies = component->autoDependencies();
if (autoDependencies.isEmpty())
continue;
// This code needs to be enabled once the scripts use isInstalled, installationRequested and
// uninstallationRequested...
if (autoDependencies.first().compare(QLatin1String("script"), Qt::CaseInsensitive) == 0) {
//QScriptValue valueFromScript;
//try {
// valueFromScript = callScriptMethod(QLatin1String("isAutoDependOn"));
//} catch (const Error &error) {
// // keep the component, should do no harm
// continue;
//}
//if (valueFromScript.isValid() && !valueFromScript.toBool())
// autoDependOnList.append(component);
continue;
}
foreach (Component *c, m_installedComponents) {
const QString replaces = c->value(scReplaces);
const QStringList possibleNames = replaces.split(QInstaller::commaRegExp(),
QString::SkipEmptyParts) << c->name();
foreach (const QString &possibleName, possibleNames)
autoDependencies.removeAll(possibleName);
}
// A component requested auto installation, keep it to resolve their dependencies as well.
if (!autoDependencies.isEmpty())
autoDependOnList.append(component);
}
}
}
if (!autoDependOnList.isEmpty())
return appendComponentsToUninstall(autoDependOnList);
return allResolved;
}
} // namespace QInstaller
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