Qt/QML edition

downloadextractthread.h

@@ -0,0 +1,59 @@
+#ifndef DOWNLOADEXTRACTTHREAD_H
+#define DOWNLOADEXTRACTTHREAD_H
+
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ * Copyright (C) 2020 Raspberry Pi (Trading) Limited
+ */
+
+#include "downloadthread.h"
+#include <deque>
+#include <condition_variable>
+
+class _extractThreadClass;
+
+class DownloadExtractThread : public DownloadThread
+{
+    Q_OBJECT
+public:
+    /*
+     * Constructor
+     *
+     * - url: URL to download
+     * - localfolder: Folder to extract archive to
+     */
+    explicit DownloadExtractThread(const QByteArray &url, const QByteArray &localfilename = "", const QByteArray &expectedHash = "", QObject *parent = nullptr);
+
+    virtual ~DownloadExtractThread();
+    virtual void cancelDownload();
+    virtual void extractImageRun();
+    virtual void extractMultiFileRun();
+    virtual bool isImage();
+    virtual void enableMultipleFileExtraction();
+
+protected:
+    char *_abuf;
+    size_t _abufsize;
+    _extractThreadClass *_extractThread;
+    std::deque<QByteArray> _queue;
+    static const int MAX_QUEUE_SIZE;
+    std::mutex _queueMutex;
+    std::condition_variable _cv;
+    bool _ethreadStarted, _isImage;
+    QCryptographicHash _inputHash;
+
+    QByteArray _popQueue();
+    void _pushQueue(const char *data, size_t len);
+    void _cancelExtract();
+    virtual size_t _writeData(const char *buf, size_t len);
+    virtual void _onDownloadSuccess();
+    virtual void _onDownloadError(const QString &msg);
+
+    ssize_t _on_read(struct archive *a, const void **buff);
+    int _on_close(struct archive *a);
+
+    static ssize_t _archive_read(struct archive *a, void *client_data, const void **buff);
+    static int _archive_close(struct archive *a, void *client_data);
+};
+
+#endif // DOWNLOADEXTRACTTHREAD_H