akondi-mime5/akonadi-mime5/serializers/akonadi_serializer_mail.h

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2024-08-05 16:19:50 +02:00
/*
SPDX-FileCopyrightText: 2007 Till Adam <adam@kde.org>
SPDX-License-Identifier: LGPL-2.0-or-later
*/
#pragma once
#include <QMutex>
#include <QObject>
#include <Akonadi/GidExtractorInterface>
#include <Akonadi/ItemSerializerPlugin>
namespace Akonadi
{
/**
* Levare QString implicit sharing to decrease memory consumption.
*
* This class is thread safe. Apparently required for usage in
* legacy KRes compat bridges.
*/
class StringPool
{
public:
/**
* Lookup @p value in the pool and return the known value
* to reuse it and leverage the implicit sharing. Otherwise
* add the value to the pool and return it again.
*/
QString sharedValue(const QString &value);
private:
QMutex m_mutex;
QSet<QString> m_pool;
};
class SerializerPluginMail : public QObject, public ItemSerializerPlugin, public GidExtractorInterface
{
Q_OBJECT
Q_INTERFACES(Akonadi::ItemSerializerPlugin Akonadi::GidExtractorInterface)
Q_PLUGIN_METADATA(IID "org.kde.akonadi.SerializerPluginMail")
public:
bool deserialize(Item &item, const QByteArray &label, QIODevice &data, int version) override;
void serialize(const Item &item, const QByteArray &label, QIODevice &data, int &version) override;
QSet<QByteArray> parts(const Item &item) const override;
QString extractGid(const Item &item) const override;
private:
StringPool m_stringPool;
};
}