qt6windows7/examples/corelib/serialization/convert/converter.h
2023-11-01 18:02:52 +01:00

57 lines
1.5 KiB
C++

// Copyright (C) 2018 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef CONVERTER_H
#define CONVERTER_H
#include <QIODevice>
#include <QList>
#include <QPair>
#include <QVariant>
#include <QVariantMap>
class VariantOrderedMap : public QList<QPair<QVariant, QVariant>>
{
public:
VariantOrderedMap() = default;
VariantOrderedMap(const QVariantMap &map)
{
reserve(map.size());
for (auto it = map.begin(); it != map.end(); ++it)
append({it.key(), it.value()});
}
};
using Map = VariantOrderedMap;
Q_DECLARE_METATYPE(Map)
class Converter
{
protected:
Converter();
public:
static Converter *null;
enum class Direction { In = 1, Out = 2, InOut = In | Out };
Q_DECLARE_FLAGS(Directions, Direction)
enum Option { SupportsArbitraryMapKeys = 0x01 };
Q_DECLARE_FLAGS(Options, Option)
virtual ~Converter() = 0;
virtual QString name() const = 0;
virtual Directions directions() const = 0;
virtual Options outputOptions() const = 0;
virtual const char *optionsHelp() const = 0;
virtual bool probeFile(QIODevice *f) const = 0;
virtual QVariant loadFile(QIODevice *f, const Converter *&outputConverter) const = 0;
virtual void saveFile(QIODevice *f, const QVariant &contents,
const QStringList &options) const = 0;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(Converter::Directions)
Q_DECLARE_OPERATORS_FOR_FLAGS(Converter::Options)
#endif // CONVERTER_H