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/**************************************************************************
**
** Copyright (C) 2022 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
, PackageManagerCore *core
, const AutoDependencyHash &autoDependencyComponentHash
, const LocalDependencyHash &localDependencyComponentHash
, const QStringList &localVirtualComponents)
: m_installedComponents(installedComponents)
, m_core(core)
, m_autoDependencyComponentHash(autoDependencyComponentHash)
, m_localDependencyComponentHash(localDependencyComponentHash)
, m_localVirtualComponents(localVirtualComponents)
{
}
QSet<Component *> UninstallerCalculator::componentsToUninstall() const
{
return m_componentsToUninstall;
}
void UninstallerCalculator::appendComponentToUninstall(Component *component, const bool reverse)
{
if (!component)
return;
if (!component->isInstalled())
return;
if (m_localDependencyComponentHash.contains(component->name())) {
const QStringList &dependencies = PackageManagerCore::parseNames(m_localDependencyComponentHash.value(component->name()));
for (const QString &dependencyComponent : dependencies) {
Component *depComponent = m_core->componentByName(dependencyComponent);
if (depComponent && depComponent->isInstalled() && !m_componentsToUninstall.contains(depComponent)) {
appendComponentToUninstall(depComponent, reverse);
insertUninstallReason(depComponent, UninstallerCalculator::Dependent, component->name());
} else if (reverse) {
appendComponentToUninstall(depComponent, true);
}
}
}
if (reverse) {
m_componentsToUninstall.remove(component);
} else {
m_componentsToUninstall.insert(component);
}
}
void UninstallerCalculator::appendComponentsToUninstall(const QList<Component*> &components, const bool reverse)
{
if (components.isEmpty())
return;
foreach (Component *component, components)
appendComponentToUninstall(component, reverse);
QList<Component*> autoDependOnList;
// All regular dependees are resolved. Now we are looking for auto depend on components.
for (Component *component : components) {
// If a components is installed and not yet scheduled for un-installation, check for auto depend.
if (!m_autoDependencyComponentHash.contains(component->name()))
continue;
const QStringList autoDependencies = PackageManagerCore::parseNames(m_autoDependencyComponentHash.value(component->name()));
for (const QString &autoDependencyComponent : autoDependencies) {
Component *autoDepComponent = m_core->componentByName(autoDependencyComponent);
if (autoDepComponent && autoDepComponent->isInstalled()) {
// A component requested auto uninstallation, keep it to resolve their dependencies as well.
if (reverse) {
autoDependOnList.append(autoDepComponent);
} else if (!m_componentsToUninstall.contains(autoDepComponent)) {
insertUninstallReason(autoDepComponent, UninstallerCalculator::AutoDependent, component->name());
autoDepComponent->setInstallAction(ComponentModelHelper::AutodependUninstallation);
autoDependOnList.append(autoDepComponent);
}
}
}
}
if (!autoDependOnList.isEmpty())
appendComponentsToUninstall(autoDependOnList, reverse);
else
appendVirtualComponentsToUninstall(reverse);
}
void UninstallerCalculator::removeComponentsFromUnInstall(const QList<Component*> &components)
{
appendComponentsToUninstall(components, true);
}
void UninstallerCalculator::insertUninstallReason(Component *component, const UninstallReasonType uninstallReason,
const QString &referencedComponentName)
{
// keep the first reason
if (m_toUninstallComponentIdReasonHash.contains(component->name()))
return;
m_toUninstallComponentIdReasonHash.insert(component->name(),
qMakePair(uninstallReason, referencedComponentName));
}
QString UninstallerCalculator::uninstallReason(Component *component) const
{
UninstallerCalculator::UninstallReasonType reason = uninstallReasonType(component);
switch (reason) {
case Selected:
return QCoreApplication::translate("UninstallerCalculator",
"Deselected Components:");
case Replaced:
return QCoreApplication::translate("UninstallerCalculator", "Components replaced "
"by \"%1\":").arg(uninstallReasonReferencedComponent(component));
case VirtualDependent:
return QCoreApplication::translate("UninstallerCalculator",
"Removing virtual components without existing dependencies:");
case Dependent:
return QCoreApplication::translate("UninstallerCalculator", "Components "
"dependency \"%1\" removed:").arg(uninstallReasonReferencedComponent(component));
case AutoDependent:
return QCoreApplication::translate("UninstallerCalculator", "Components "
"autodependency \"%1\" removed:").arg(uninstallReasonReferencedComponent(component));
}
return QString();
}
UninstallerCalculator::UninstallReasonType UninstallerCalculator::uninstallReasonType(Component *c) const
{
return m_toUninstallComponentIdReasonHash.value(c->name()).first;
}
QString UninstallerCalculator::uninstallReasonReferencedComponent(Component *component) const
{
return m_toUninstallComponentIdReasonHash.value(component->name()).second;
}
void UninstallerCalculator::appendVirtualComponentsToUninstall(const bool reverse)
{
QList<Component*> unneededVirtualList;
// Check for virtual components without dependees
if (reverse) {
for (Component *reverseFromUninstall : qAsConst(m_virtualComponentsForReverse)) {
if (m_componentsToUninstall.contains(reverseFromUninstall)) {
bool required = false;
// Check if installed or about to be updated -packages are dependant on the package
const QList<Component*> installDependants = m_core->installDependants(reverseFromUninstall);
for (Component *dependant : installDependants) {
if (dependant->isInstalled() && !m_componentsToUninstall.contains(dependant)) {
required = true;
break;
}
}
if (required) {
unneededVirtualList.append(reverseFromUninstall);
}
}
}
} else {
for (const QString &componentName : qAsConst(m_localVirtualComponents)) {
Component *virtualComponent = m_core->componentByName(componentName);
if (virtualComponent->isInstalled() && !m_componentsToUninstall.contains(virtualComponent)) {
// Components with auto dependencies were handled in the previous step
if (!virtualComponent->autoDependencies().isEmpty() || virtualComponent->forcedInstallation())
continue;
bool required = false;
// Check if installed or about to be updated -packages are dependant on the package
const QList<Component*> installDependants = m_core->installDependants(virtualComponent);
for (Component *dependant : installDependants) {
if (dependant->isInstalled() && !m_componentsToUninstall.contains(dependant)) {
required = true;
break;
}
}
if (!required) {
unneededVirtualList.append(virtualComponent);
m_virtualComponentsForReverse.append(virtualComponent);
insertUninstallReason(virtualComponent, UninstallerCalculator::VirtualDependent);
}
}
}
}
if (!unneededVirtualList.isEmpty())
appendComponentsToUninstall(unneededVirtualList, reverse);
}
} // namespace QInstaller
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