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#ifndef QFILEINFO_P_H
#define QFILEINFO_P_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 "qfileinfo.h"
#include "qabstractfileengine.h"
#include "qdatetime.h"
#include "qatomic.h"

QT_BEGIN_NAMESPACE

class QFileInfoPrivate
{
public:
    QFileInfoPrivate(const QFileInfo *copy=0);
    ~QFileInfoPrivate();

    void initFileEngine(const QString &);

    uint getFileFlags(QAbstractFileEngine::FileFlags) const;
    QDateTime &getFileTime(QAbstractFileEngine::FileTime) const;
    QString getFileName(QAbstractFileEngine::FileName) const;
    QString getFileOwner(QAbstractFileEngine::FileOwner own) const;

    enum { CachedFileFlags=0x01, CachedLinkTypeFlag=0x02, CachedBundleTypeFlag=0x04,
           CachedMTime=0x10, CachedCTime=0x20, CachedATime=0x40,
           CachedSize =0x08, CachedPerms=0x80 };
    struct Data {
        inline Data()
            : ref(1), fileEngine(0),
              cachedFlags(0), cache_enabled(1), fileFlags(0), fileSize(0)
        {}
        inline Data(const Data &copy)
            : ref(1), fileEngine(QAbstractFileEngine::create(copy.fileName)),
              fileName(copy.fileName),
              cachedFlags(0), cache_enabled(copy.cache_enabled), fileFlags(0), fileSize(0)
        {}
        inline ~Data() { delete fileEngine; }
        inline void clearFlags() {
            fileFlags = 0;
            cachedFlags = 0;
            if (fileEngine)
                (void)fileEngine->fileFlags(QAbstractFileEngine::Refresh);
        }
        inline void clear() {
            clearFlags();
            for (int i = QAbstractFileEngine::NFileNames - 1 ; i >= 0 ; --i)
                fileNames[i].clear();
            fileOwners[1].clear();
            fileOwners[0].clear();
        }
        mutable QAtomicInt ref;

        QAbstractFileEngine *fileEngine;
        mutable QString fileName;
        mutable QString fileNames[QAbstractFileEngine::NFileNames];
        mutable QString fileOwners[2];

        mutable uint cachedFlags : 31;
        mutable uint cache_enabled : 1;
        mutable uint fileFlags;
        mutable qint64 fileSize;
        mutable QDateTime fileTimes[3];
        inline bool getCachedFlag(uint c) const
        { return cache_enabled ? (cachedFlags & c) : 0; }
        inline void setCachedFlag(uint c)
        { if (cache_enabled) cachedFlags |= c; }
    } *data;
    inline void reset() {
        detach();
        data->clear();
    }
    void detach();
};

QT_END_NAMESPACE

#endif // QFILEINFO_P_H
