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/**************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** 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 The Qt Company. For licensing terms
** and conditions see http://qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
**
** $QT_END_LICENSE$
**
**************************************************************************/
#include "installercalculator.h"
#include "component.h"
#include "packagemanagercore.h"
#include <QDebug>
namespace QInstaller {
InstallerCalculator::InstallerCalculator(const QList<Component *> &allComponents)
: m_allComponents(allComponents)
{
}
void InstallerCalculator::insertInstallReason(Component *component,
InstallReasonType installReason, const QString &referencedComponentName)
{
// keep the first reason
if (m_toInstallComponentIdReasonHash.contains(component->name()))
return;
m_toInstallComponentIdReasonHash.insert(component->name(),
qMakePair(installReason, referencedComponentName));
}
InstallerCalculator::InstallReasonType InstallerCalculator::installReasonType(Component *c) const
{
return m_toInstallComponentIdReasonHash.value(c->name(),
qMakePair(InstallerCalculator::Selected, QString())).first;
}
QString InstallerCalculator::installReasonReferencedComponent(Component *component) const
{
return m_toInstallComponentIdReasonHash.value(component->name(),
qMakePair(InstallerCalculator::Selected, QString())).second;
}
QString InstallerCalculator::installReason(Component *component) const
{
InstallerCalculator::InstallReasonType reason = installReasonType(component);
switch (reason) {
case Automatic:
return QCoreApplication::translate("InstallerCalculator",
"Components added as automatic dependencies:");
case Dependent:
return QCoreApplication::translate("InstallerCalculator", "Components added as "
"dependency for \"%1\":").arg(installReasonReferencedComponent(component));
case Resolved:
return QCoreApplication::translate("InstallerCalculator",
"Components that have resolved dependencies:");
case Selected:
return QCoreApplication::translate("InstallerCalculator",
"Selected components without dependencies:");
}
return QString();
}
QList<Component*> InstallerCalculator::orderedComponentsToInstall() const
{
return m_orderedComponentsToInstall;
}
QString InstallerCalculator::componentsToInstallError() const
{
return m_componentsToInstallError;
}
void InstallerCalculator::realAppendToInstallComponents(Component *component)
{
if (!component->isInstalled() || component->updateRequested()) {
m_orderedComponentsToInstall.append(component);
m_toInstallComponentIds.insert(component->name());
}
}
QString InstallerCalculator::recursionError(Component *component)
{
return QCoreApplication::translate("InstallerCalculator", "Recursion detected, component \"%1\" "
"already added with reason: \"%2\"").arg(component->name(), installReason(component));
}
bool InstallerCalculator::appendComponentsToInstall(const QList<Component *> &components)
{
if (components.isEmpty())
return true;
QList<Component*> notAppendedComponents; // for example components with unresolved dependencies
foreach (Component *component, components){
if (m_toInstallComponentIds.contains(component->name())) {
const QString errorMessage = recursionError(component);
qWarning().noquote() << errorMessage;
m_componentsToInstallError.append(errorMessage);
Q_ASSERT_X(!m_toInstallComponentIds.contains(component->name()), Q_FUNC_INFO,
qPrintable(errorMessage));
return false;
}
if (component->dependencies().isEmpty())
realAppendToInstallComponents(component);
else
notAppendedComponents.append(component);
}
foreach (Component *component, notAppendedComponents) {
if (!appendComponentToInstall(component))
return false;
}
QList<Component *> foundAutoDependOnList;
// All regular dependencies are resolved. Now we are looking for auto depend on components.
foreach (Component *component, m_allComponents) {
// If a components is already installed or is scheduled for installation, no need to check
// for auto depend installation.
if ((!component->isInstalled() || component->updateRequested())
&& !m_toInstallComponentIds.contains(component->name())) {
// If we figure out a component requests auto installation, keep it to resolve
// their dependencies as well.
if (component->isAutoDependOn(m_toInstallComponentIds)) {
foundAutoDependOnList.append(component);
insertInstallReason(component, InstallerCalculator::Automatic);
}
}
}
if (!foundAutoDependOnList.isEmpty())
return appendComponentsToInstall(foundAutoDependOnList);
return true;
}
bool InstallerCalculator::appendComponentToInstall(Component *component)
{
QSet<QString> allDependencies = component->dependencies().toSet();
foreach (const QString &dependencyComponentName, allDependencies) {
// PackageManagerCore::componentByName returns 0 if dependencyComponentName contains a
// version which is not available
Component *dependencyComponent =
PackageManagerCore::componentByName(dependencyComponentName, m_allComponents);
if (!dependencyComponent) {
const QString errorMessage = QCoreApplication::translate("InstallerCalculator",
"Cannot find missing dependency \"%1\" for \"%2\".").arg(dependencyComponentName,
component->name());
qWarning().noquote() << errorMessage;
m_componentsToInstallError.append(errorMessage);
return false;
}
if ((!dependencyComponent->isInstalled() || dependencyComponent->updateRequested())
&& !m_toInstallComponentIds.contains(dependencyComponent->name())) {
if (m_visitedComponents.value(component).contains(dependencyComponent)) {
const QString errorMessage = recursionError(component);
qWarning().noquote() << errorMessage;
m_componentsToInstallError = errorMessage;
Q_ASSERT_X(!m_visitedComponents.value(component).contains(dependencyComponent),
Q_FUNC_INFO, qPrintable(errorMessage));
return false;
}
m_visitedComponents[component].insert(dependencyComponent);
// add needed dependency components to the next run
insertInstallReason(dependencyComponent, InstallerCalculator::Dependent,
component->name());
if (!appendComponentToInstall(dependencyComponent))
return false;
}
}
if (!m_toInstallComponentIds.contains(component->name())) {
realAppendToInstallComponents(component);
insertInstallReason(component, InstallerCalculator::Resolved);
}
return true;
}
} // namespace QInstaller
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