Add support for handling archive files with libarchive

libarchive is a multi-format archive and compression library
written in C and licensed under the new BSD license. Usage of
libarchive brings in support for additional archive formats
(in addition to 7z) with the installer framework, like zip and
tar, with several available compression methods like gzip, bzip2
and xz.

libarchive will coexist as a supported archive format handler
with the LZMA SDK currently used in the framework, which will
continue to be used for handling the 7-Zip file format.

This change introduces classes for handling archive operations
using both libraries, removes most calls to the old Lib7z facade
and migrates the code base to use the new handling methods.

Task-number: QTIFW-2255
Change-Id: I8d77110ded503060495a3d6fdfdbc26281df9453
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Katja Marttila <katja.marttila@qt.io>

1 files changed, 94 insertions, 0 deletions

diff --git a/src/libs/installer/libarchivewrapper_p.h b/src/libs/installer/libarchivewrapper_p.h
new file mode 100644
index 000000000..ea8409da0
--- /dev/null
+++ b/src/libs/installer/libarchivewrapper_p.h
@@ -0,0 +1,94 @@
+/**************************************************************************
+**
+** Copyright (C) 2021 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.
+**
+** $QT_END_LICENSE$
+**
+**************************************************************************/
+
+#ifndef LIBARCHIVEWRAPPER_P_H
+#define LIBARCHIVEWRAPPER_P_H
+
+#include "installer_global.h"
+#include "remoteobject.h"
+#include "libarchivearchive.h"
+#include "lib7zarchive.h"
+
+#include <QTimer>
+#include <QReadWriteLock>
+
+namespace QInstaller {
+
+class INSTALLER_EXPORT LibArchiveWrapperPrivate : public RemoteObject
+{
+    Q_OBJECT
+    Q_DISABLE_COPY(LibArchiveWrapperPrivate)
+
+public:
+    explicit LibArchiveWrapperPrivate(const QString &filename);
+    LibArchiveWrapperPrivate();
+    ~LibArchiveWrapperPrivate();
+
+    bool open(QIODevice::OpenMode mode);
+    void close();
+    void setFilename(const QString &filename);
+
+    QString errorString() const;
+
+    bool extract(const QString &dirPath, const quint64 totalFiles = 0);
+    bool create(const QStringList &data);
+    QVector<ArchiveEntry> list();
+    bool isSupported();
+
+    void setCompressionLevel(const AbstractArchive::CompressionLevel level);
+
+Q_SIGNALS:
+    void currentEntryChanged(const QString &filename);
+    void completedChanged(const quint64 completed, const quint64 total);
+    void dataBlockRequested();
+    void remoteWorkerFinished();
+
+public Q_SLOTS:
+    void cancel();
+
+private Q_SLOTS:
+    void processSignals();
+    void onDataBlockRequested();
+
+private:
+    void init();
+
+    void addDataBlock(const QByteArray &buffer);
+    void setClientDataAtEnd();
+    ExtractWorker::Status workerStatus() const;
+
+private:
+    QTimer m_timer;
+    mutable QReadWriteLock m_lock;
+
+    LibArchiveArchive m_archive;
+};
+
+} // namespace QInstaller
+
+#endif // LIBARCHIVEWRAPPER_P_H