summaryrefslogtreecommitdiffstats
path: root/src/libs/installer/extractarchiveoperation.cpp
blob: 1283278557a83baabed7b6b49efccef31bca670b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
/**************************************************************************
**
** 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 "extractarchiveoperation_p.h"

#include <QEventLoop>
#include <QThreadPool>

namespace QInstaller {

ExtractArchiveOperation::ExtractArchiveOperation(PackageManagerCore *core)
    : UpdateOperation(core)
{
    setName(QLatin1String("Extract"));
}

void ExtractArchiveOperation::backup()
{
    // we need to backup on the fly...
}

bool ExtractArchiveOperation::performOperation()
{
    if (!checkArgumentCount(2))
        return false;

    const QStringList args = arguments();
    const QString archivePath = args.at(0);
    const QString targetDir = args.at(1);

    Receiver receiver;
    Callback callback;

    connect(&callback, &Callback::currentFileChanged, this, &ExtractArchiveOperation::fileFinished);
    connect(&callback, &Callback::progressChanged, this, &ExtractArchiveOperation::progressChanged);

    if (PackageManagerCore *core = packageManager()) {
        connect(core, &PackageManagerCore::statusChanged, &callback, &Callback::statusChanged);
    }

    Runnable *runnable = new Runnable(archivePath, targetDir, &callback);
    connect(runnable, &Runnable::finished, &receiver, &Receiver::runnableFinished,
        Qt::QueuedConnection);

    m_files.clear();

    QEventLoop loop;
    connect(&receiver, &Receiver::finished, &loop, &QEventLoop::quit);
    if (QThreadPool::globalInstance()->tryStart(runnable)) {
        loop.exec();
    } else {
        // HACK: In case there is no availabe thread we should call it directly.
        runnable->run();
        receiver.runnableFinished(true, QString());
    }

    setValue(QLatin1String("files"), m_files);

    // TODO: Use backups for rollback, too? Doesn't work for uninstallation though.

    // delete all backups we can delete right now, remember the rest
    foreach (const Backup &i, callback.backupFiles())
        deleteFileNowOrLater(i.second);

    if (!receiver.success()) {
        setError(UserDefinedError);
        setErrorString(receiver.errorString());
        return false;
    }
    return true;
}

bool ExtractArchiveOperation::undoOperation()
{
    Q_ASSERT(arguments().count() == 2);
    const QStringList files = value(QLatin1String("files")).toStringList();

    WorkerThread *const thread = new WorkerThread(this, files);
    connect(thread, &WorkerThread::currentFileChanged, this,
        &ExtractArchiveOperation::outputTextChanged);
    connect(thread, &WorkerThread::progressChanged, this,
        &ExtractArchiveOperation::progressChanged);

    QEventLoop loop;
    connect(thread, &QThread::finished, &loop, &QEventLoop::quit, Qt::QueuedConnection);
    thread->start();
    loop.exec();
    thread->deleteLater();
    return true;
}

bool ExtractArchiveOperation::testOperation()
{
    return true;
}

/*!
    This slot is direct connected to the caller so please don't call it from another thread in the
    same time.
*/
void ExtractArchiveOperation::fileFinished(const QString &filename)
{
    m_files.prepend(filename);
    emit outputTextChanged(QDir::toNativeSeparators(filename));
}

} // namespace QInstaller