qfileinfogatherer_p.h

奇趣公司比较新的qt/emd版本

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#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 <qthread.h>
#include <qmutex.h>
#include <qwaitcondition.h>
#include <qfilesystemwatcher.h>
#include <qfileiconprovider.h>
#include <qpair.h>
#include <qdatetime.h>
#include <qstack.h>
#include <qdir.h>

class QExtendedInformation {
public:
    enum Type { Dir, File, System };

    QExtendedInformation() : size(0), fileType(System), isHidden(false),
                             isSymLink(false), caseSensitive(true) {}

    qint64 size;
    QString displayType;
    QIcon icon;
    QDateTime lastModified;
    QFile::Permissions permissions;
    Type fileType;
    bool isHidden : 1;
    bool isSymLink : 1;
    bool caseSensitive : 1;

    inline bool isDir() { return fileType == Dir; }
    inline bool isFile() { return fileType == File; }
    inline bool isSystem() { return fileType == System; }

    bool operator ==(const QExtendedInformation &fileInfo) const {
       return fileInfo.size == size
       && fileInfo.displayType == displayType
       && fileInfo.lastModified == lastModified
       && fileInfo.permissions == permissions
       && fileInfo.fileType == fileType
       && fileInfo.isHidden == isHidden
       && fileInfo.isSymLink == isSymLink
       && fileInfo.caseSensitive == caseSensitive;
    }
    void operator =(const QExtendedInformation &fileInfo) {
        size = fileInfo.size;
        displayType = fileInfo.displayType;
        icon = fileInfo.icon;
        lastModified = fileInfo.lastModified;
        permissions = fileInfo.permissions;
        fileType = fileInfo.fileType;
        isHidden = fileInfo.isHidden;
        isSymLink = fileInfo.isSymLink;
        caseSensitive = fileInfo.caseSensitive;
    }
};

class QFileIconProvider;

#ifndef QT_NO_FILESYSTEMWATCHER

class Q_AUTOTEST_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;

public:
    QFileInfoGatherer(QObject *parent = 0);
    ~QFileInfoGatherer();

    void clear();
    QExtendedInformation getInfo(const QFileInfo &info) 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);
    bool resolveSymlinks() const;
    void setIconProvider(QFileIconProvider *provider);
    QFileIconProvider *iconProvider() const;

protected:
    void run();
    void getFileInfos(const QString &path, const QStringList &files);

private:
    void fetch(const QFileInfo &info, QTime &base, bool &firstTime, QList<QPair<QString, QFileInfo> > &updatedFiles, const QString &path);
    QString translateDriveName(const QFileInfo &drive) const;
    QFile::Permissions translatePermissions(const QFileInfo &fileInfo) const;

    QMutex mutex;
    QWaitCondition condition;
    bool abort;

    QStack<QString> path;
    QStack<QStringList> files;

    QFileSystemWatcher *watcher;
    bool m_resolveSymlinks;
    QFileIconProvider *m_iconProvider;
    QFileIconProvider defaultProvider;
#ifndef Q_OS_WIN
    uint userId;
    uint groupId;
#endif
};
#endif // QT_NO_FILESYSTEMWATCHER

#endif // QFILEINFOGATHERER_H