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/**************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
**************************************************************************/
#include "uninstallercalculator.h"
#include "component.h"
#include "packagemanagercore.h"
#include "globals.h"
#include <QDebug>
namespace QInstaller {
/*!
\inmodule QtInstallerFramework
\class QInstaller::UninstallerCalculator
\internal
*/
UninstallerCalculator::UninstallerCalculator(const QList<Component *> &installedComponents)
: m_installedComponents(installedComponents)
{
}
QSet<Component *> UninstallerCalculator::componentsToUninstall() const
{
return m_componentsToUninstall;
}
void UninstallerCalculator::appendComponentToUninstall(Component *component)
{
if (!component)
return;
if (!component->isInstalled())
return;
PackageManagerCore *core = component->packageManagerCore();
// remove all already resolved dependees
QSet<Component *> dependees = core->dependees(component).toSet()
.subtract(m_componentsToUninstall);
foreach (Component *dependee, dependees)
appendComponentToUninstall(dependee);
m_componentsToUninstall.insert(component);
}
void UninstallerCalculator::appendComponentsToUninstall(const QList<Component*> &components)
{
foreach (Component *component, components)
appendComponentToUninstall(component);
QList<Component*> autoDependOnList;
// 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 = PackageManagerCore::parseNames(component->autoDependencies());
if (autoDependencies.isEmpty())
continue;
// This code needs to be enabled once the scripts use isInstalled, installationRequested and
// uninstallationRequested...
if (autoDependencies.first().compare(scScript, 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) {
Component *cc = PackageManagerCore::componentByName(possibleName, m_installedComponents);
if (cc && (cc->installAction() != ComponentModelHelper::AutodependUninstallation)) {
autoDependencies.removeAll(possibleName);
}
}
}
// A component requested auto uninstallation, keep it to resolve their dependencies as well.
if (!autoDependencies.isEmpty()) {
autoDependOnList.append(component);
component->setInstallAction(ComponentModelHelper::AutodependUninstallation);
}
}
}
if (!autoDependOnList.isEmpty())
appendComponentsToUninstall(autoDependOnList);
else
continueAppendComponentsToUninstall();
}
void UninstallerCalculator::continueAppendComponentsToUninstall()
{
QList<Component*> unneededVirtualList;
// Check for virtual components without dependees
foreach (Component *component, m_installedComponents) {
if (component->isInstalled() && component->isVirtual() && !m_componentsToUninstall.contains(component)) {
// Components with auto dependencies were handled in the previous step
if (!component->autoDependencies().isEmpty())
continue;
if (component->forcedInstallation())
continue;
bool required = false;
PackageManagerCore *core = component->packageManagerCore();
foreach (Component *dependee, core->dependees(component)) {
if (dependee->isInstalled() && !m_componentsToUninstall.contains(dependee)) {
required = true;
break;
}
}
if (!required)
unneededVirtualList.append(component);
}
}
if (!unneededVirtualList.isEmpty())
appendComponentsToUninstall(unneededVirtualList);
}
} // namespace QInstaller
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