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/***************************************************************************
 *   Copyright 2008 Evgeniy Ivanov <powerfox@kde.ru>                       *
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 *   Copyright 2009 Hugo Parente Lima <hugo.pl@gmail.com>                  *
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 *   Copyright 2010 Aleix Pol Gonzalez <aleixpol@kde.org>                  *
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 *                                                                         *
 *   This program is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU General Public License as        *
 *   published by the Free Software Foundation; either version 2 of        *
 *   the License or (at your option) version 3 or any later version        *
 *   accepted by the membership of KDE e.V. (or its successor approved     *
 *   by the membership of KDE e.V.), which shall act as a proxy            *
 *   defined in Section 14 of version 3 of the license.                    *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
 ***************************************************************************/

#include "gitplugin.h"

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#include <QDateTime>
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#include <QDebug>
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#include <QDir>
#include <QFileInfo>
#include <QMenu>
#include <QTimer>
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#include <QRegularExpression>
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#include <interfaces/icore.h>
#include <interfaces/iprojectcontroller.h>
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#include <interfaces/iproject.h>
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#include <util/path.h>

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#include <vcs/vcsjob.h>
#include <vcs/vcsrevision.h>
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#include <vcs/vcsevent.h>
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#include <vcs/dvcs/dvcsjob.h>
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#include <vcs/vcsannotation.h>
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#include <vcs/widgets/standardvcslocationwidget.h>
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#include "gitclonejob.h"
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#include <interfaces/contextmenuextension.h>
#include <interfaces/iruncontroller.h>
#include "stashmanagerdialog.h"
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#include <KDirWatch>
#include <KIO/CopyJob>
#include <KLocalizedString>
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#include <KMessageBox>
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#include <KTextEdit>
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#include <KTextEditor/Document>
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#include "gitjob.h"
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#include "gitmessagehighlighter.h"
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#include "gitplugincheckinrepositoryjob.h"
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#include "gitnameemaildialog.h"
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#include "debug.h"

Q_LOGGING_CATEGORY(PLUGIN_GIT, "kdevplatform.plugins.git")
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using namespace KDevelop;

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QVariant runSynchronously(KDevelop::VcsJob* job)
{
    QVariant ret;
    if(job->exec() && job->status()==KDevelop::VcsJob::JobSucceeded) {
        ret = job->fetchResults();
    }
    delete job;
    return ret;
}

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namespace
{
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QDir dotGitDirectory(const QUrl& dirPath)
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{
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    const QFileInfo finfo(dirPath.toLocalFile());
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    QDir dir = finfo.isDir() ? QDir(finfo.filePath()): finfo.absoluteDir();
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    static const QString gitDir = QStringLiteral(".git");
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    while (!dir.exists(gitDir) && dir.cdUp()) {} // cdUp, until there is a sub-directory called .git
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    if (dir.isRoot()) {
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        qCWarning(PLUGIN_GIT) << "couldn't find the git root for" << dirPath;
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    }

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    return dir;
}

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/**
 * Whenever a directory is provided, change it for all the files in it but not inner directories,
 * that way we make sure we won't get into recursion,
 */
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static QList<QUrl> preventRecursion(const QList<QUrl>& urls)
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{
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    QList<QUrl> ret;
    foreach(const QUrl& url, urls) {
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        QDir d(url.toLocalFile());
        if(d.exists()) {
            QStringList entries = d.entryList(QDir::Files | QDir::NoDotAndDotDot);
            foreach(const QString& entry, entries) {
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                QUrl entryUrl = QUrl::fromLocalFile(d.absoluteFilePath(entry));
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                ret += entryUrl;
            }
        } else
            ret += url;
    }
    return ret;
}

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QString toRevisionName(const KDevelop::VcsRevision& rev, QString currentRevision=QString())
{
    switch(rev.revisionType()) {
        case VcsRevision::Special:
            switch(rev.revisionValue().value<VcsRevision::RevisionSpecialType>()) {
                case VcsRevision::Head:
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                    return QStringLiteral("^HEAD");
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                case VcsRevision::Base:
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                    return QString();
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                case VcsRevision::Working:
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                    return QString();
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                case VcsRevision::Previous:
                    Q_ASSERT(!currentRevision.isEmpty());
                    return currentRevision + "^1";
                case VcsRevision::Start:
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                    return QString();
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                case VcsRevision::UserSpecialType: //Not used
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                    Q_ASSERT(false && "i don't know how to do that");
            }
            break;
        case VcsRevision::GlobalNumber:
            return rev.revisionValue().toString();
        case VcsRevision::Date:
        case VcsRevision::FileNumber:
        case VcsRevision::Invalid:
        case VcsRevision::UserSpecialType:
            Q_ASSERT(false);
    }
    return QString();
}

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QString revisionInterval(const KDevelop::VcsRevision& rev, const KDevelop::VcsRevision& limit)
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{
    QString ret;
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    if(rev.revisionType()==VcsRevision::Special &&
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                rev.revisionValue().value<VcsRevision::RevisionSpecialType>()==VcsRevision::Start) //if we want it to the beginning just put the revisionInterval
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        ret = toRevisionName(limit, QString());
    else {
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        QString dst = toRevisionName(limit);
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        if(dst.isEmpty())
            ret = dst;
        else {
            QString src = toRevisionName(rev, dst);
            if(src.isEmpty())
                ret = src;
            else
                ret = src+".."+dst;
        }
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    }
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    return ret;
}

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QDir urlDir(const QUrl& url)
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{
    QFileInfo f(url.toLocalFile());
    if(f.isDir())
        return QDir(url.toLocalFile());
    else
        return f.absoluteDir();
}
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QDir urlDir(const QList<QUrl>& urls) { return urlDir(urls.first()); } //TODO: could be improved
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}

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GitPlugin::GitPlugin( QObject *parent, const QVariantList & )
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    : DistributedVersionControlPlugin(parent, QStringLiteral("kdevgit")), m_oldVersion(false), m_usePrefix(true)
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{
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    if (QStandardPaths::findExecutable(QStringLiteral("git")).isEmpty()) {
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        setErrorDescription(i18n("Unable to find git executable. Is it installed on the system?"));
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        return;
    }

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    setObjectName(QStringLiteral("Git"));
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    DVcsJob* versionJob = new DVcsJob(QDir::tempPath(), this, KDevelop::OutputJob::Silent);
    *versionJob << "git" << "--version";
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    connect(versionJob, &DVcsJob::readyForParsing, this, &GitPlugin::parseGitVersionOutput);
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    ICore::self()->runController()->registerJob(versionJob);
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    m_watcher = new KDirWatch(this);
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    connect(m_watcher, &KDirWatch::dirty, this, &GitPlugin::fileChanged);
    connect(m_watcher, &KDirWatch::created, this, &GitPlugin::fileChanged);
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}

GitPlugin::~GitPlugin()
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{}
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bool emptyOutput(DVcsJob* job)
{
    QScopedPointer<DVcsJob> _job(job);
    if(job->exec() && job->status()==VcsJob::JobSucceeded)
        return job->rawOutput().trimmed().isEmpty();
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    return false;
}

bool GitPlugin::hasStashes(const QDir& repository)
{
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    return !emptyOutput(gitStash(repository, QStringList(QStringLiteral("list")), KDevelop::OutputJob::Silent));
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}

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bool GitPlugin::hasModifications(const QDir& d)
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{
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    return !emptyOutput(lsFiles(d, QStringList(QStringLiteral("-m")), OutputJob::Silent));
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}

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bool GitPlugin::hasModifications(const QDir& repo, const QUrl& file)
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{
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    return !emptyOutput(lsFiles(repo, QStringList() << QStringLiteral("-m") << file.path(), OutputJob::Silent));
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}

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void GitPlugin::additionalMenuEntries(QMenu* menu, const QList<QUrl>& urls)
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{
    m_urls = urls;
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    QDir dir=urlDir(urls);
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    bool hasSt = hasStashes(dir);
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    menu->addSeparator()->setText(i18n("Git Stashes"));
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    menu->addAction(i18n("Stash Manager"), this, SLOT(ctxStashManager()))->setEnabled(hasSt);
    menu->addAction(i18n("Push Stash"), this, SLOT(ctxPushStash()));
    menu->addAction(i18n("Pop Stash"), this, SLOT(ctxPopStash()))->setEnabled(hasSt);
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}

void GitPlugin::ctxPushStash()
{
    VcsJob* job = gitStash(urlDir(m_urls), QStringList(), KDevelop::OutputJob::Verbose);
    ICore::self()->runController()->registerJob(job);
}

void GitPlugin::ctxPopStash()
{
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    VcsJob* job = gitStash(urlDir(m_urls), QStringList(QStringLiteral("pop")), KDevelop::OutputJob::Verbose);
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    ICore::self()->runController()->registerJob(job);
}

void GitPlugin::ctxStashManager()
{
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    QPointer<StashManagerDialog> d = new StashManagerDialog(urlDir(m_urls), this, nullptr);
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    d->exec();
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    delete d;
}

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DVcsJob* GitPlugin::errorsFound(const QString& error, KDevelop::OutputJob::OutputJobVerbosity verbosity=OutputJob::Verbose)
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{
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    DVcsJob* j = new DVcsJob(QDir::temp(), this, verbosity);
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    *j << "echo" << i18n("error: %1", error) << "-n";
    return j;
}

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QString GitPlugin::name() const
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{
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    return QStringLiteral("Git");
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}

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QUrl GitPlugin::repositoryRoot(const QUrl& path)
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{
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    return QUrl::fromLocalFile(dotGitDirectory(path).absolutePath());
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}

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bool GitPlugin::isValidDirectory(const QUrl & dirPath)
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{
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    QDir dir=dotGitDirectory(dirPath);
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    return dir.exists(QStringLiteral(".git/HEAD"));
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}

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bool GitPlugin::isVersionControlled(const QUrl &path)
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{
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    QFileInfo fsObject(path.toLocalFile());
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    if (!fsObject.exists()) {
        return false;
    }
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    if (fsObject.isDir()) {
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        return isValidDirectory(path);
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    }
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    QString filename = fsObject.fileName();

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    QStringList otherFiles = getLsFiles(fsObject.dir(), QStringList(QStringLiteral("--")) << filename, KDevelop::OutputJob::Silent);
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    return !otherFiles.empty();
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}

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VcsJob* GitPlugin::init(const QUrl &directory)
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{
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    DVcsJob* job = new DVcsJob(urlDir(directory), this);
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    job->setType(VcsJob::Import);
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    *job << "git" << "init";
    return job;
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}

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VcsJob* GitPlugin::createWorkingCopy(const KDevelop::VcsLocation & source, const QUrl& dest, KDevelop::IBasicVersionControl::RecursionMode)
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{
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    DVcsJob* job = new GitCloneJob(urlDir(dest), this);
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    job->setType(VcsJob::Import);
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    *job << "git" << "clone" << "--progress" << "--" << source.localUrl().url() << dest;
    return job;
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}

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VcsJob* GitPlugin::add(const QList<QUrl>& localLocations, KDevelop::IBasicVersionControl::RecursionMode recursion)
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{
    if (localLocations.empty())
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        return errorsFound(i18n("Did not specify the list of files"), OutputJob::Verbose);
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    DVcsJob* job = new GitJob(dotGitDirectory(localLocations.front()), this);
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    job->setType(VcsJob::Add);
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    *job << "git" << "add" << "--" << (recursion == IBasicVersionControl::Recursive ? localLocations : preventRecursion(localLocations));
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    return job;
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}

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KDevelop::VcsJob* GitPlugin::status(const QList<QUrl>& localLocations, KDevelop::IBasicVersionControl::RecursionMode recursion)
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{
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    if (localLocations.empty())
        return errorsFound(i18n("Did not specify the list of files"), OutputJob::Verbose);

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    DVcsJob* job = new GitJob(urlDir(localLocations), this, OutputJob::Silent);
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    job->setType(VcsJob::Status);
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    if(m_oldVersion) {
        *job << "git" << "ls-files" << "-t" << "-m" << "-c" << "-o" << "-d" << "-k" << "--directory";
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        connect(job, &DVcsJob::readyForParsing, this, &GitPlugin::parseGitStatusOutput_old);
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    } else {
        *job << "git" << "status" << "--porcelain";
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        job->setIgnoreError(true);
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        connect(job, &DVcsJob::readyForParsing, this, &GitPlugin::parseGitStatusOutput);
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    }
    *job << "--" << (recursion == IBasicVersionControl::Recursive ? localLocations : preventRecursion(localLocations));
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    return job;
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}

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VcsJob* GitPlugin::diff(const QUrl& fileOrDirectory, const KDevelop::VcsRevision& srcRevision, const KDevelop::VcsRevision& dstRevision,
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                        VcsDiff::Type /*type*/, IBasicVersionControl::RecursionMode recursion)
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{
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    //TODO: control different types
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    DVcsJob* job = new GitJob(dotGitDirectory(fileOrDirectory), this, KDevelop::OutputJob::Silent);
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    job->setType(VcsJob::Diff);
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    *job << "git" << "diff" << "--no-color" << "--no-ext-diff";
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    if (!usePrefix()) {
        // KDE's ReviewBoard now requires p1 patchfiles, so `git diff --no-prefix` to generate p0 patches
        // has become optional.
        *job << "--no-prefix";
    }
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    if (dstRevision.revisionType() == VcsRevision::Special &&
         dstRevision.specialType() == VcsRevision::Working) {
        if (srcRevision.revisionType() == VcsRevision::Special &&
             srcRevision.specialType() == VcsRevision::Base) {
            *job << "HEAD";
        } else {
            *job << "--cached" << srcRevision.revisionValue().toString();
        }
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    } else {
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        QString revstr = revisionInterval(srcRevision, dstRevision);
        if(!revstr.isEmpty())
            *job << revstr;
    }
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    *job << "--";
    if (recursion == IBasicVersionControl::Recursive) {
        *job << fileOrDirectory;
    } else {
        *job << preventRecursion(QList<QUrl>() << fileOrDirectory);
    }

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    connect(job, &DVcsJob::readyForParsing, this, &GitPlugin::parseGitDiffOutput);
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    return job;
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}

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VcsJob* GitPlugin::revert(const QList<QUrl>& localLocations, IBasicVersionControl::RecursionMode recursion)
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{
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    if(localLocations.isEmpty() )
        return errorsFound(i18n("Could not revert changes"), OutputJob::Verbose);
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    QDir repo = urlDir(repositoryRoot(localLocations.first()));
    QString modified;
    for (const auto& file: localLocations) {
        if (hasModifications(repo, file)) {
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            modified.append(file.toDisplayString(QUrl::PreferLocalFile) + "<br/>");
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        }
    }
    if (!modified.isEmpty()) {
        auto res = KMessageBox::questionYesNo(nullptr, i18n("The following files have uncommited changes, "
                                              "which will be lost. Continue?") + "<br/><br/>" + modified);
        if (res != KMessageBox::Yes) {
            return errorsFound(QString(), OutputJob::Silent);
        }
    }

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    DVcsJob* job = new GitJob(dotGitDirectory(localLocations.front()), this);
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    job->setType(VcsJob::Revert);
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    *job << "git" << "checkout" << "--";
    *job << (recursion == IBasicVersionControl::Recursive ? localLocations : preventRecursion(localLocations));
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    return job;
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}


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//TODO: git doesn't like empty messages, but "KDevelop didn't provide any message, it may be a bug" looks ugly...
//If no files specified then commit already added files
VcsJob* GitPlugin::commit(const QString& message,
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                             const QList<QUrl>& localLocations,
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                             KDevelop::IBasicVersionControl::RecursionMode recursion)
{
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    if (localLocations.empty() || message.isEmpty())
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        return errorsFound(i18n("No files or message specified"));
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    const QDir dir = dotGitDirectory(localLocations.front());
    if (!ensureValidGitIdentity(dir)) {
        return errorsFound(i18n("Email or name for Git not specified"));
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    }
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    DVcsJob* job = new DVcsJob(dir, this);
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    job->setType(VcsJob::Commit);
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    QList<QUrl> files = (recursion == IBasicVersionControl::Recursive ? localLocations : preventRecursion(localLocations));
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    addNotVersionedFiles(dir, files);
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    *job << "git" << "commit" << "-m" << message;
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    *job << "--" << files;
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    return job;
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}
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bool GitPlugin::ensureValidGitIdentity(const QDir& dir)
{
    const QUrl url = QUrl::fromLocalFile(dir.absolutePath());

    const QString name = readConfigOption(url, QStringLiteral("user.name"));
    const QString email = readConfigOption(url, QStringLiteral("user.email"));
    if (!email.isEmpty() && !name.isEmpty()) {
        return true; // already okay
    }

    GitNameEmailDialog dialog;
    dialog.setName(name);
    dialog.setEmail(email);
    if (!dialog.exec()) {
        return false;
    }

    runSynchronously(setConfigOption(url, QStringLiteral("user.name"), dialog.name(), dialog.isGlobal()));
    runSynchronously(setConfigOption(url, QStringLiteral("user.email"), dialog.email(), dialog.isGlobal()));
    return true;
}

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void GitPlugin::addNotVersionedFiles(const QDir& dir, const QList<QUrl>& files)
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{
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    QStringList otherStr = getLsFiles(dir, QStringList() << QStringLiteral("--others"), KDevelop::OutputJob::Silent);
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    QList<QUrl> toadd, otherFiles;
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    foreach(const QString& file, otherStr) {
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        QUrl v = QUrl::fromLocalFile(dir.absoluteFilePath(file));
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        otherFiles += v;
    }
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    //We add the files that are not versioned
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    foreach(const QUrl& file, files) {
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        if(otherFiles.contains(file) && QFileInfo(file.toLocalFile()).isFile())
            toadd += file;
    }
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    if(!toadd.isEmpty()) {
        VcsJob* job = add(toadd);
        job->exec();
    }
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}

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bool isEmptyDirStructure(const QDir &dir)
{
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    foreach (const QFileInfo &i, dir.entryInfoList(QDir::AllEntries | QDir::NoDotAndDotDot)) {
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        if (i.isDir()) {
            if (!isEmptyDirStructure(QDir(i.filePath()))) return false;
        } else if (i.isFile()) {
            return false;
        }
    }
    return true;
}

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VcsJob* GitPlugin::remove(const QList<QUrl>& files)
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{
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    if (files.isEmpty())
        return errorsFound(i18n("No files to remove"));
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    QDir dotGitDir = dotGitDirectory(files.front());


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    QList<QUrl> files_(files);
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    QMutableListIterator<QUrl> i(files_);
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    while (i.hasNext()) {
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        QUrl file = i.next();
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        QFileInfo fileInfo(file.toLocalFile());
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        QStringList otherStr = getLsFiles(dotGitDir, QStringList() << QStringLiteral("--others") << QStringLiteral("--") << file.toLocalFile(), KDevelop::OutputJob::Silent);
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        if(!otherStr.isEmpty()) {
            //remove files not under version control
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            QList<QUrl> otherFiles;
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            foreach(const QString &f, otherStr) {
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                otherFiles << QUrl::fromLocalFile(dotGitDir.path()+'/'+f);
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            }
            if (fileInfo.isFile()) {
                //if it's an unversioned file we are done, don't use git rm on it
                i.remove();
            }
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            auto trashJob = KIO::trash(otherFiles);
            trashJob->exec();
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            qCDebug(PLUGIN_GIT) << "other files" << otherFiles;
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        }

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        if (fileInfo.isDir()) {
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            if (isEmptyDirStructure(QDir(file.toLocalFile()))) {
                //remove empty folders, git doesn't do that
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                auto trashJob = KIO::trash(file);
                trashJob->exec();
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                qCDebug(PLUGIN_GIT) << "empty folder, removing" << file;
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                //we already deleted it, don't use git rm on it
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                i.remove();
            }
        }
    }

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    if (files_.isEmpty()) return nullptr;
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    DVcsJob* job = new GitJob(dotGitDir, this);
    job->setType(VcsJob::Remove);
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    // git refuses to delete files with local modifications
    // use --force to overcome this
    *job << "git" << "rm" << "-r" << "--force";
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    *job << "--" << files_;
    return job;
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}

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VcsJob* GitPlugin::log(const QUrl& localLocation,
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                const KDevelop::VcsRevision& src, const KDevelop::VcsRevision& dst)
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{
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    DVcsJob* job = new GitJob(dotGitDirectory(localLocation), this, KDevelop::OutputJob::Silent);
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    job->setType(VcsJob::Log);
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    *job << "git" << "log" << "--date=raw" << "--name-status" << "-M80%" << "--follow";
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    QString rev = revisionInterval(dst, src);
    if(!rev.isEmpty())
        *job << rev;
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    *job << "--" << localLocation;
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    connect(job, &DVcsJob::readyForParsing, this, &GitPlugin::parseGitLogOutput);
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    return job;
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}

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VcsJob* GitPlugin::log(const QUrl& localLocation, const KDevelop::VcsRevision& rev, unsigned long int limit)
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{
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    DVcsJob* job = new GitJob(dotGitDirectory(localLocation), this, KDevelop::OutputJob::Silent);
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    job->setType(VcsJob::Log);
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    *job << "git" << "log" << "--date=raw" << "--name-status" << "-M80%" << "--follow";
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    QString revStr = toRevisionName(rev, QString());
    if(!revStr.isEmpty())
        *job << revStr;
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    if(limit>0)
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        *job << QStringLiteral("-%1").arg(limit);
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    *job << "--" << localLocation;
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    connect(job, &DVcsJob::readyForParsing, this, &GitPlugin::parseGitLogOutput);
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    return job;
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}

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KDevelop::VcsJob* GitPlugin::annotate(const QUrl &localLocation, const KDevelop::VcsRevision&)
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{
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    DVcsJob* job = new GitJob(dotGitDirectory(localLocation), this, KDevelop::OutputJob::Silent);
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    job->setType(VcsJob::Annotate);
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    *job << "git" << "blame" << "--porcelain" << "-w";
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    *job << "--" << localLocation;
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    connect(job, &DVcsJob::readyForParsing, this, &GitPlugin::parseGitBlameOutput);
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    return job;
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}

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void GitPlugin::parseGitBlameOutput(DVcsJob *job)
{
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    QVariantList results;
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    VcsAnnotationLine* annotation = nullptr;
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    const auto output = job->output();
    const auto lines = output.splitRef('\n');
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    bool skipNext=false;
    QMap<QString, VcsAnnotationLine> definedRevisions;
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    for(QVector<QStringRef>::const_iterator it=lines.constBegin(), itEnd=lines.constEnd();
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        it!=itEnd; ++it)
    {
        if(skipNext) {
            skipNext=false;
            results += qVariantFromValue(*annotation);
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            continue;
        }
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        if(it->isEmpty())
            continue;
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        QStringRef name = it->left(it->indexOf(' '));
        QStringRef value = it->right(it->size()-name.size()-1);
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        if(name==QLatin1String("author"))
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            annotation->setAuthor(value.toString());
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        else if(name==QLatin1String("author-mail")) {} //TODO: do smth with the e-mail?
        else if(name==QLatin1String("author-tz")) {} //TODO: does it really matter?
        else if(name==QLatin1String("author-time"))
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            annotation->setDate(QDateTime::fromTime_t(value.toUInt()));
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        else if(name==QLatin1String("summary"))
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            annotation->setCommitMessage(value.toString());
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        else if(name.startsWith(QStringLiteral("committer"))) {} //We will just store the authors
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        else if(name==QLatin1String("previous")) {} //We don't need that either
        else if(name==QLatin1String("filename")) { skipNext=true; }
        else if(name==QLatin1String("boundary")) {
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            definedRevisions.insert(QStringLiteral("boundary"), VcsAnnotationLine());
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        }
        else
        {
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            const auto values = value.split(' ');
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            VcsRevision rev;
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            rev.setRevisionValue(name.left(8).toString(), KDevelop::VcsRevision::GlobalNumber);
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            skipNext = definedRevisions.contains(name.toString());
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            if(!skipNext)
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                definedRevisions.insert(name.toString(), VcsAnnotationLine());
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            annotation = &definedRevisions[name.toString()];
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            annotation->setLineNumber(values[1].toInt() - 1);
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            annotation->setRevision(rev);
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        }
    }
    job->setResults(results);
}
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DVcsJob* GitPlugin::lsFiles(const QDir &repository, const QStringList &args,
                            OutputJob::OutputJobVerbosity verbosity)
{
    DVcsJob* job = new DVcsJob(repository, this, verbosity);
    *job << "git" << "ls-files" << args;
    return job;
}

DVcsJob* GitPlugin::gitStash(const QDir& repository, const QStringList& args, OutputJob::OutputJobVerbosity verbosity)
{
    DVcsJob* job = new DVcsJob(repository, this, verbosity);
    *job << "git" << "stash" << args;
    return job;
}

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VcsJob* GitPlugin::tag(const QUrl& repository, const QString& commitMessage, const VcsRevision& rev, const QString& tagName)
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{
    DVcsJob* job = new DVcsJob(urlDir(repository), this);
    *job << "git" << "tag" << "-m" << commitMessage << tagName;
    if(rev.revisionValue().isValid())
        *job << rev.revisionValue().toString();
    return job;
}

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VcsJob* GitPlugin::switchBranch(const QUrl &repository, const QString &branch)
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{
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    QDir d=urlDir(repository);
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    if(hasModifications(d) && KMessageBox::questionYesNo(nullptr, i18n("There are pending changes, do you want to stash them first?"))==KMessageBox::Yes) {
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        QScopedPointer<DVcsJob> stash(gitStash(d, QStringList(), KDevelop::OutputJob::Verbose));
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        stash->exec();
    }
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    DVcsJob* job = new DVcsJob(d, this);
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    *job << "git" << "checkout" << branch;
    return job;
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}

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VcsJob* GitPlugin::branch(const QUrl& repository, const KDevelop::VcsRevision& rev, const QString& branchName)
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{
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    Q_ASSERT(!branchName.isEmpty());
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    DVcsJob* job = new DVcsJob(urlDir(repository), this);
    *job << "git" << "branch" << "--" << branchName;
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    if(!rev.prettyValue().isEmpty())
        *job << rev.revisionValue().toString();
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    return job;
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}

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VcsJob* GitPlugin::deleteBranch(const QUrl& repository, const QString& branchName)
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{
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    DVcsJob* job = new DVcsJob(urlDir(repository), this, OutputJob::Silent);
    *job << "git" << "branch" << "-D" << branchName;
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    connect(job, &DVcsJob::readyForParsing, this, &GitPlugin::parseGitCurrentBranch);
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    return job;
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}

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VcsJob* GitPlugin::renameBranch(const QUrl& repository, const QString& oldBranchName, const QString& newBranchName)
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{
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    DVcsJob* job = new DVcsJob(urlDir(repository), this, OutputJob::Silent);
    *job << "git" << "branch" << "-m" << newBranchName << oldBranchName;
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    connect(job, &DVcsJob::readyForParsing, this, &GitPlugin::parseGitCurrentBranch);
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    return job;
}

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VcsJob* GitPlugin::mergeBranch(const QUrl& repository, const QString& branchName)
{
    Q_ASSERT(!branchName.isEmpty());

    DVcsJob* job = new DVcsJob(urlDir(repository), this);
    *job << "git" << "merge" << branchName;

    return job;
}

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VcsJob* GitPlugin::currentBranch(const QUrl& repository)
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{
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    DVcsJob* job = new DVcsJob(urlDir(repository), this, OutputJob::Silent);
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    job->setIgnoreError(true);
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    *job << "git" << "symbolic-ref" << "-q" << "--short" << "HEAD";
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    connect(job, &DVcsJob::readyForParsing, this, &GitPlugin::parseGitCurrentBranch);
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    return job;
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}

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void GitPlugin::parseGitCurrentBranch(DVcsJob* job)
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{
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    QString out = job->output().trimmed();
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    job->setResults(out);
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}

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VcsJob* GitPlugin::branches(const QUrl &repository)