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#ifndef FILEWATCHER_FSEVENTS_P_H

#define FILEWATCHER_FSEVENTS_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists for the convenience

// of the QLibrary class.  This header file may change from

// version to version without notice, or even be removed.

//

// We mean it.

//

#include "qfilesystemwatcher_p.h"

#include <QtCore/qmutex.h>

#include <QtCore/qwaitcondition.h>

#include <QtCore/qthread.h>

#include <QtCore/qhash.h>

#include <QtCore/qlinkedlist.h>

#include <private/qcore_mac_p.h>

#include <sys/stat.h>

typedef struct __FSEventStream *FSEventStreamRef;

typedef const struct __FSEventStream *ConstFSEventStreamRef;

typedef const struct __CFArray *CFArrayRef;

typedef UInt32 FSEventStreamEventFlags;

typedef uint64_t FSEventStreamEventId;

QT_BEGIN_NAMESPACE

#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5

// Yes, I use a stat64 element here. QFileInfo requires too much knowledge about implementation

// details to be used as a long-standing record. Since I'm going to have to store this information, I can

// do the stat myself too.

struct PathInfo {

    PathInfo(const QString &path, const QByteArray &absPath)

            : originalPath(path), absolutePath(absPath) {}

    QString originalPath; // The path we need to emit

    QByteArray absolutePath; // The path we need to stat.

    struct ::stat64 savedInfo;  // All the info for the path so we can compare it.

};

typedef QLinkedList<PathInfo> PathInfoList;

typedef QHash<QString, PathInfoList> PathHash;

#endif

class QFSEventsFileSystemWatcherEngine : public QFileSystemWatcherEngine

{

    Q_OBJECT

public:

    ~QFSEventsFileSystemWatcherEngine();

    static QFSEventsFileSystemWatcherEngine *create();

    QStringList addPaths(const QStringList &paths, QStringList *files, QStringList *directories);

    QStringList removePaths(const QStringList &paths, QStringList *files, QStringList *directories);

    void stop();

private:

    QFSEventsFileSystemWatcherEngine();

    void warmUpFSEvents();

    void updateFiles();

    static void fseventsCallback(ConstFSEventStreamRef streamRef, void *clientCallBackInfo, size_t numEvents,

                                  void *eventPaths, const FSEventStreamEventFlags eventFlags[],

                                  const FSEventStreamEventId eventIds[]);

    void run();

    FSEventStreamRef fsStream;

    CFArrayRef pathsToWatch;

    CFRunLoopRef threadsRunLoop;

    QMutex mutex;

    QWaitCondition waitCondition;

    QWaitCondition waitForStop;

#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5

    PathHash filePathInfoHash;

    PathHash dirPathInfoHash;

    void updateHash(PathHash &pathHash);

    void updateList(PathInfoList &list, bool directory, bool emitSignals);

#endif

};

#endif

QT_END_NAMESPACE