Redesign RSS subsystem

src/base/asyncfilestorage.h

@@ -0,0 +1,64 @@
+/*
+ * Bittorrent Client using Qt and libtorrent.
+ * Copyright (C) 2017  Vladimir Golovnev <glassez@yandex.ru>
+ *
+ * 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) any later version.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link this program with the OpenSSL project's "OpenSSL" library (or with
+ * modified versions of it that use the same license as the "OpenSSL" library),
+ * and distribute the linked executables. You must obey the GNU General Public
+ * License in all respects for all of the code used other than "OpenSSL".  If you
+ * modify file(s), you may extend this exception to your version of the file(s),
+ * but you are not obligated to do so. If you do not wish to do so, delete this
+ * exception statement from your version.
+ */
+
+#pragma once
+
+#include <stdexcept>
+
+#include <QDir>
+#include <QFile>
+#include <QObject>
+
+class AsyncFileStorageError: public std::runtime_error
+{
+public:
+    explicit AsyncFileStorageError(const QString &message);
+    QString message() const;
+};
+
+class AsyncFileStorage: public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit AsyncFileStorage(const QString &storageFolderPath, QObject *parent = nullptr);
+    ~AsyncFileStorage() override;
+
+    void store(const QString &fileName, const QByteArray &data);
+
+    QDir storageDir() const;
+
+signals:
+    void failed(const QString &fileName, const QString &errorString);
+
+private:
+    Q_INVOKABLE void store_impl(const QString &fileName, const QByteArray &data);
+
+    QDir m_storageDir;
+    QFile m_lockFile;
+};