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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** 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.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "vcsmanager.h"
#include "iversioncontrol.h"
#include "icore.h"
#include "filemanager.h"
#include <extensionsystem/pluginmanager.h>
#include <utils/qtcassert.h>
#include <QtCore/QString>
#include <QtCore/QList>
#include <QtCore/QMap>
#include <QtCore/QCoreApplication>
#include <QtCore/QDebug>
#include <QtCore/QFileInfo>
#include <QtGui/QMessageBox>
enum { debug = 0 };
namespace Core {
typedef QList<IVersionControl *> VersionControlList;
typedef QMap<QString, IVersionControl *> VersionControlCache;
static inline VersionControlList allVersionControls()
{
return ExtensionSystem::PluginManager::instance()->getObjects<IVersionControl>();
}
// ---- VCSManagerPrivate:
// Maintains a cache of top-level directory->version control.
class VcsManagerPrivate
{
public:
VersionControlCache m_cachedMatches;
};
VcsManager::VcsManager(QObject *parent) :
QObject(parent),
m_d(new VcsManagerPrivate)
{
}
VcsManager::~VcsManager()
{
delete m_d;
}
void VcsManager::extensionsInitialized()
{
// Change signal connections
FileManager *fileManager = ICore::instance()->fileManager();
foreach (IVersionControl *versionControl, allVersionControls()) {
connect(versionControl, SIGNAL(filesChanged(QStringList)),
fileManager, SIGNAL(filesChangedInternally(QStringList)));
connect(versionControl, SIGNAL(repositoryChanged(QString)),
this, SIGNAL(repositoryChanged(QString)));
}
}
static bool longerThanPath(QPair<QString, IVersionControl *> &pair1, QPair<QString, IVersionControl *> &pair2)
{
return pair1.first.size() > pair2.first.size();
}
IVersionControl* VcsManager::findVersionControlForDirectory(const QString &directory,
QString *topLevelDirectory)
{
typedef VersionControlCache::const_iterator VersionControlCacheConstIterator;
if (debug) {
qDebug(">findVersionControlForDirectory %s topLevelPtr %d",
qPrintable(directory), (topLevelDirectory != 0));
if (debug > 1) {
const VersionControlCacheConstIterator cend = m_d->m_cachedMatches.constEnd();
for (VersionControlCacheConstIterator it = m_d->m_cachedMatches.constBegin(); it != cend; ++it)
qDebug("Cache %s -> '%s'", qPrintable(it.key()), qPrintable(it.value()->displayName()));
}
}
QTC_ASSERT(!directory.isEmpty(), return 0);
const VersionControlCacheConstIterator cacheEnd = m_d->m_cachedMatches.constEnd();
if (topLevelDirectory)
topLevelDirectory->clear();
// First check if the directory has an entry, meaning it is a top level
const VersionControlCacheConstIterator fullPathIt = m_d->m_cachedMatches.constFind(directory);
if (fullPathIt != cacheEnd) {
if (topLevelDirectory)
*topLevelDirectory = directory;
if (debug)
qDebug("<findVersionControlForDirectory: full cache match for VCS '%s'", qPrintable(fullPathIt.value()->displayName()));
return fullPathIt.value();
}
// Split the path, trying to find the matching repository. We start from the reverse
// in order to detected nested repositories correctly (say, a git checkout under SVN).
// Note that detection of a nested version control will still fail if the
// above-located version control is detected and entered into the cache first.
// The nested one can then no longer be found due to the splitting of the paths.
int pos = directory.size() - 1;
const QChar slash = QLatin1Char('/');
while (true) {
const int index = directory.lastIndexOf(slash, pos);
if (index <= 0) // Stop at '/' or not found
break;
const QString directoryPart = directory.left(index);
const VersionControlCacheConstIterator it = m_d->m_cachedMatches.constFind(directoryPart);
if (it != cacheEnd) {
if (topLevelDirectory)
*topLevelDirectory = it.key();
if (debug)
qDebug("<findVersionControlForDirectory: cache match for VCS '%s', topLevel: %s",
qPrintable(it.value()->displayName()), qPrintable(it.key()));
return it.value();
}
pos = index - 1;
}
// Nothing: ask the IVersionControls directly, insert the toplevel into the cache.
const VersionControlList versionControls = allVersionControls();
QList<QPair<QString, IVersionControl *> > allThatCanManage;
foreach (IVersionControl * versionControl, versionControls) {
QString topLevel;
if (versionControl->managesDirectory(directory, &topLevel)) {
if (debug)
qDebug("<findVersionControlForDirectory: %s manages %s",
qPrintable(versionControl->displayName()),
qPrintable(topLevel));
allThatCanManage.push_back(qMakePair(topLevel, versionControl));
}
}
// To properly find a nested repository (say, git checkout inside SVN),
// we need to select the version control with the longest toplevel pathname.
qSort(allThatCanManage.begin(), allThatCanManage.end(), longerThanPath);
if (!allThatCanManage.isEmpty()) {
QString toplevel = allThatCanManage.first().first;
IVersionControl *versionControl = allThatCanManage.first().second;
m_d->m_cachedMatches.insert(toplevel, versionControl);
if (topLevelDirectory)
*topLevelDirectory = toplevel;
if (debug)
qDebug("<findVersionControlForDirectory: invocation of '%s' matches: %s",
qPrintable(versionControl->displayName()), qPrintable(toplevel));
return versionControl;
}
if (debug)
qDebug("<findVersionControlForDirectory: No match for %s", qPrintable(directory));
return 0;
}
bool VcsManager::promptToDelete(const QString &fileName)
{
if (IVersionControl *vc = findVersionControlForDirectory(QFileInfo(fileName).absolutePath()))
return promptToDelete(vc, fileName);
return true;
}
IVersionControl *VcsManager::checkout(const QString &versionControlType,
const QString &directory,
const QByteArray &url)
{
foreach (IVersionControl *versionControl, allVersionControls()) {
if (versionControl->displayName() == versionControlType
&& versionControl->supportsOperation(Core::IVersionControl::CheckoutOperation)) {
if (versionControl->vcsCheckout(directory, url)) {
m_d->m_cachedMatches.insert(directory, versionControl);
return versionControl;
}
return 0;
}
}
return 0;
}
bool VcsManager::findVersionControl(const QString &versionControlType)
{
foreach (IVersionControl * versionControl, allVersionControls()) {
if (versionControl->displayName() == versionControlType)
return true;
}
return false;
}
QString VcsManager::repositoryUrl(const QString &directory)
{
IVersionControl *vc = findVersionControlForDirectory(directory);
if (vc && vc->supportsOperation(Core::IVersionControl::GetRepositoryRootOperation))
return vc->vcsGetRepositoryURL(directory);
return QString();
}
bool VcsManager::promptToDelete(IVersionControl *vc, const QString &fileName)
{
QTC_ASSERT(vc, return true)
if (!vc->supportsOperation(IVersionControl::DeleteOperation))
return true;
const QString title = tr("Version Control");
const QString msg = tr("Would you like to remove this file from the version control system (%1)?\n"
"Note: This might remove the local file.").arg(vc->displayName());
const QMessageBox::StandardButton button =
QMessageBox::question(0, title, msg, QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
if (button != QMessageBox::Yes)
return true;
return vc->vcsDelete(fileName);
}
CORE_EXPORT QDebug operator<<(QDebug in, const VcsManager &v)
{
QDebug nospace = in.nospace();
const VersionControlCache::const_iterator cend = v.m_d->m_cachedMatches.constEnd();
for (VersionControlCache::const_iterator it = v.m_d->m_cachedMatches.constBegin(); it != cend; ++it)
nospace << "Directory: " << it.key() << ' ' << it.value()->displayName() << '\n';
nospace << '\n';
return in;
}
} // namespace Core
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