init

Telegram/SourceFiles/export/output/export_output_file.h

@@ -0,0 +1,57 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "base/optional.h"
+
+#include <QtCore/QFile>
+#include <QtCore/QString>
+#include <QtCore/QByteArray>
+
+namespace Export {
+namespace Output {
+
+struct Result;
+class Stats;
+
+class File {
+public:
+	File(const QString &path, Stats *stats);
+
+	[[nodiscard]] int64 size() const;
+	[[nodiscard]] bool empty() const;
+
+	[[nodiscard]] Result writeBlock(const QByteArray &block);
+
+	[[nodiscard]] static QString PrepareRelativePath(
+		const QString &folder,
+		const QString &suggested);
+
+	[[nodiscard]] static Result Copy(
+		const QString &source,
+		const QString &path,
+		Stats *stats);
+
+private:
+	[[nodiscard]] Result reopen();
+	[[nodiscard]] Result writeBlockAttempt(const QByteArray &block);
+
+	[[nodiscard]] Result error() const;
+	[[nodiscard]] Result fatalError() const;
+
+	QString _path;
+	int64 _offset = 0;
+	std::optional<QFile> _file;
+
+	Stats *_stats = nullptr;
+	bool _inStats = false;
+
+};
+
+} // namespace Output
+} // namespace File