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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
using namespace Qt::StringLiterals;
//! [0]
class ZipEngineHandler : public QAbstractFileEngineHandler
{
public:
std::unique_ptr<QAbstractFileEngine> create(const QString &fileName) const override;
};
std::unique_ptr<QAbstractFileEngine> ZipEngineHandler::create(const QString &fileName) const
{
// ZipEngineHandler returns a ZipEngine for all .zip files
if (fileName.toLower().endsWith(".zip"_L1))
return std::make_unique<ZipEngine>(fileName);
return {};
}
int main(int argc, char **argv)
{
QApplication app(argc, argv);
ZipEngineHandler engine;
MainWindow window;
window.show();
return app.exec();
}
//! [0]
//! [1]
std::unique_ptr<QAbstractFileEngine> ZipEngineHandler::create(const QString &fileName) const
{
// ZipEngineHandler returns a ZipEngine for all .zip files
if (fileName.toLower().endsWith(".zip"_L1))
return std::make_unique<ZipEngine>(fileName);
else
return {};
}
//! [1]
//! [2]
QAbstractFileEngine::IteratorUniquePtr
CustomFileEngine::beginEntryList(const QString &path, QDir::Filters filters,
const QStringList &filterNames)
{
return std::make_unique<CustomFileEngineIterator>(path, filters, filterNames);
}
//! [2]
//! [3]
class CustomIterator : public QAbstractFileEngineIterator
{
public:
CustomIterator(const QString &path, const QStringList &nameFilters, QDir::Filters filters)
: QAbstractFileEngineIterator(path, nameFilters, filters), index(0)
{
// In a real iterator, these entries are fetched from the
// file system based on the value of path().
entries << "entry1" << "entry2" << "entry3";
}
bool advance() override
{
if (entries.isEmpty())
return false;
if (index < entries.size() - 1) {
++index;
return true;
}
return false;
}
QString currentFileName() override
{
return entries.at(index);
}
private:
QStringList entries;
int index;
};
//! [3]
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