56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#include "storage/cache/storage_cache_types.h"
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#include <QtCore/QDir>
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namespace Storage {
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namespace Cache {
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QString ComputeBasePath(const QString &original) {
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const auto result = QDir(original).absolutePath();
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return result.endsWith('/') ? result : (result + '/');
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}
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QString VersionFilePath(const QString &base) {
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Expects(base.endsWith('/'));
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return base + QStringLiteral("version");
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}
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base::optional<Version> ReadVersionValue(const QString &base) {
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QFile file(VersionFilePath(base));
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if (!file.open(QIODevice::ReadOnly)) {
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return base::none;
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}
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const auto bytes = file.read(sizeof(Version));
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if (bytes.size() != sizeof(Version)) {
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return base::none;
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}
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return *reinterpret_cast<const Version*>(bytes.data());
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}
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bool WriteVersionValue(const QString &base, Version value) {
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if (!QDir().mkpath(base)) {
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return false;
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}
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const auto bytes = QByteArray::fromRawData(
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reinterpret_cast<const char*>(&value),
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sizeof(value));
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QFile file(VersionFilePath(base));
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if (!file.open(QIODevice::WriteOnly)) {
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return false;
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} else if (file.write(bytes) != bytes.size()) {
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return false;
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}
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return file.flush();
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}
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} // namespace Cache
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} // namespace Storage
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