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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QML preview debug service.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
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**
****************************************************************************/
#ifndef QQMLPREVIEWFILEENGINE_H
#define QQMLPREVIEWFILEENGINE_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qqmlpreviewfileloader.h"
#include <private/qabstractfileengine_p.h>
#include <private/qfsfileengine_p.h>
#include <QtCore/qbuffer.h>
QT_BEGIN_NAMESPACE
class QQmlPreviewFileEngine : public QAbstractFileEngine
{
public:
QQmlPreviewFileEngine(const QString &file, const QString &absolute,
QQmlPreviewFileLoader *loader);
void setFileName(const QString &file) override;
bool open(QIODevice::OpenMode flags) override ;
bool close() override;
qint64 size() const override;
qint64 pos() const override;
bool seek(qint64) override;
qint64 read(char *data, qint64 maxlen) override;
FileFlags fileFlags(FileFlags type) const override;
QString fileName(QAbstractFileEngine::FileName file) const override;
uint ownerId(FileOwner) const override;
Iterator *beginEntryList(QDir::Filters filters, const QStringList &filterNames) override;
Iterator *endEntryList() override;
// Forwarding to fallback if exists
bool flush() override;
bool syncToDisk() override;
bool isSequential() const override;
bool remove() override;
bool copy(const QString &newName) override;
bool rename(const QString &newName) override;
bool renameOverwrite(const QString &newName) override;
bool link(const QString &newName) override;
bool mkdir(const QString &dirName, bool createParentDirectories) const override;
bool rmdir(const QString &dirName, bool recurseParentDirectories) const override;
bool setSize(qint64 size) override;
bool caseSensitive() const override;
bool isRelativePath() const override;
QStringList entryList(QDir::Filters filters, const QStringList &filterNames) const override;
bool setPermissions(uint perms) override;
QByteArray id() const override;
QString owner(FileOwner) const override;
QDateTime fileTime(FileTime time) const override;
int handle() const override;
qint64 readLine(char *data, qint64 maxlen) override;
qint64 write(const char *data, qint64 len) override;
bool extension(Extension extension, const ExtensionOption *option, ExtensionReturn *output) override;
bool supportsExtension(Extension extension) const override;
private:
void load() const;
QString m_name;
QString m_absolute;
QPointer<QQmlPreviewFileLoader> m_loader;
mutable QBuffer m_contents;
mutable QStringList m_entries;
mutable QScopedPointer<QAbstractFileEngine> m_fallback;
mutable QQmlPreviewFileLoader::Result m_result = QQmlPreviewFileLoader::Unknown;
};
class QQmlPreviewFileEngineHandler : public QAbstractFileEngineHandler
{
public:
QQmlPreviewFileEngineHandler(QQmlPreviewFileLoader *loader);
QAbstractFileEngine *create(const QString &fileName) const override;
private:
QPointer<QQmlPreviewFileLoader> m_loader;
};
QT_END_NAMESPACE
#endif // QQMLPREVIEWFILEENGINE_H
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