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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QFILEINFOGATHERER_H
#define QFILEINFOGATHERER_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 <QtGui/private/qtguiglobal_p.h>
#include <qthread.h>
#include <qmutex.h>
#include <qwaitcondition.h>
#if QT_CONFIG(filesystemwatcher)
#include <qfilesystemwatcher.h>
#endif
#include <qabstractfileiconprovider.h>
#include <qpair.h>
#include <qstack.h>
#include <qdatetime.h>
#include <qdir.h>
#include <qelapsedtimer.h>
#include <private/qfilesystemengine_p.h>
QT_REQUIRE_CONFIG(filesystemmodel);
QT_BEGIN_NAMESPACE
class QExtendedInformation {
public:
enum Type { Dir, File, System };
QExtendedInformation() {}
QExtendedInformation(const QFileInfo &info) : mFileInfo(info) {}
inline bool isDir() { return type() == Dir; }
inline bool isFile() { return type() == File; }
inline bool isSystem() { return type() == System; }
bool operator ==(const QExtendedInformation &fileInfo) const {
return mFileInfo == fileInfo.mFileInfo
&& displayType == fileInfo.displayType
&& permissions() == fileInfo.permissions()
&& lastModified() == fileInfo.lastModified();
}
#ifndef QT_NO_FSFILEENGINE
bool isCaseSensitive() const {
return QFileSystemEngine::isCaseSensitive();
}
#endif
QFile::Permissions permissions() const {
return mFileInfo.permissions();
}
Type type() const {
if (mFileInfo.isDir()) {
return QExtendedInformation::Dir;
}
if (mFileInfo.isFile()) {
return QExtendedInformation::File;
}
if (!mFileInfo.exists() && mFileInfo.isSymLink()) {
return QExtendedInformation::System;
}
return QExtendedInformation::System;
}
bool isSymLink(bool ignoreNtfsSymLinks = false) const
{
if (ignoreNtfsSymLinks) {
#ifdef Q_OS_WIN
return !mFileInfo.suffix().compare(QLatin1StringView("lnk"), Qt::CaseInsensitive);
#endif
}
return mFileInfo.isSymLink();
}
bool isHidden() const {
return mFileInfo.isHidden();
}
QFileInfo fileInfo() const {
return mFileInfo;
}
QDateTime lastModified() const {
return mFileInfo.lastModified();
}
qint64 size() const {
qint64 size = -1;
if (type() == QExtendedInformation::Dir)
size = 0;
if (type() == QExtendedInformation::File)
size = mFileInfo.size();
if (!mFileInfo.exists() && !mFileInfo.isSymLink())
size = -1;
return size;
}
QString displayType;
QIcon icon;
private :
QFileInfo mFileInfo;
};
class QFileIconProvider;
class Q_GUI_EXPORT QFileInfoGatherer : public QThread
{
Q_OBJECT
Q_SIGNALS:
void updates(const QString &directory, const QList<QPair<QString, QFileInfo>> &updates);
void newListOfFiles(const QString &directory, const QStringList &listOfFiles) const;
void nameResolved(const QString &fileName, const QString &resolvedName) const;
void directoryLoaded(const QString &path);
public:
explicit QFileInfoGatherer(QObject *parent = nullptr);
~QFileInfoGatherer();
QStringList watchedFiles() const;
QStringList watchedDirectories() const;
void watchPaths(const QStringList &paths);
void unwatchPaths(const QStringList &paths);
bool isWatching() const;
void setWatching(bool v);
// only callable from this->thread():
void clear();
void removePath(const QString &path);
QExtendedInformation getInfo(const QFileInfo &info) const;
QAbstractFileIconProvider *iconProvider() const;
bool resolveSymlinks() const;
public Q_SLOTS:
void list(const QString &directoryPath);
void fetchExtendedInformation(const QString &path, const QStringList &files);
void updateFile(const QString &path);
void setResolveSymlinks(bool enable);
void setIconProvider(QAbstractFileIconProvider *provider);
private Q_SLOTS:
void driveAdded();
void driveRemoved();
private:
void run() override;
// called by run():
void getFileInfos(const QString &path, const QStringList &files);
void fetch(const QFileInfo &info, QElapsedTimer &base, bool &firstTime,
QList<QPair<QString, QFileInfo>> &updatedFiles, const QString &path);
private:
void createWatcher();
mutable QMutex mutex;
// begin protected by mutex
QWaitCondition condition;
QStack<QString> path;
QStack<QStringList> files;
// end protected by mutex
QAtomicInt abort;
#if QT_CONFIG(filesystemwatcher)
QFileSystemWatcher *m_watcher = nullptr;
#endif
QAbstractFileIconProvider *m_iconProvider; // not accessed by run()
QAbstractFileIconProvider defaultProvider;
#ifdef Q_OS_WIN
bool m_resolveSymlinks = true; // not accessed by run()
#endif
#if QT_CONFIG(filesystemwatcher)
bool m_watching = true;
#endif
};
QT_END_NAMESPACE
#endif // QFILEINFOGATHERER_H
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