/****************************************************************************

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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

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** This file is part of the QtCore module of the Qt Toolkit.

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** No Commercial Usage

** This file contains pre-release code and may not be distributed.

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** contained in the Technology Preview License Agreement accompanying

** this package.

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** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

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**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

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** If you have questions regarding the use of this file, please contact

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** $QT_END_LICENSE$

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****************************************************************************/

#ifndef QFILE_H

#define QFILE_H

#include <QtCore/qiodevice.h>

#include <QtCore/qstring.h>

#include <stdio.h>

#ifdef open

#error qfile.h must be included before any header file that defines open

#endif

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Core)

class QAbstractFileEngine;

class QFilePrivate;

class Q_CORE_EXPORT QFile : public QIODevice

{

#ifndef QT_NO_QOBJECT

    Q_OBJECT

#endif

    Q_DECLARE_PRIVATE(QFile)

public:

    enum FileError {

        NoError = 0,

        ReadError = 1,

        WriteError = 2,

        FatalError = 3,

        ResourceError = 4,

        OpenError = 5,

        AbortError = 6,

        TimeOutError = 7,

        UnspecifiedError = 8,

        RemoveError = 9,

        RenameError = 10,

        PositionError = 11,

        ResizeError = 12,

        PermissionsError = 13,

        CopyError = 14

#ifdef QT3_SUPPORT

        , ConnectError = 30

#endif

    };

    enum Permission {

        ReadOwner = 0x4000, WriteOwner = 0x2000, ExeOwner = 0x1000,

        ReadUser  = 0x0400, WriteUser  = 0x0200, ExeUser  = 0x0100,

        ReadGroup = 0x0040, WriteGroup = 0x0020, ExeGroup = 0x0010,

        ReadOther = 0x0004, WriteOther = 0x0002, ExeOther = 0x0001

    };

    Q_DECLARE_FLAGS(Permissions, Permission)

    QFile();

    QFile(const QString &name);

#ifndef QT_NO_QOBJECT

    explicit QFile(QObject *parent);

    QFile(const QString &name, QObject *parent);

#endif

    ~QFile();

    FileError error() const;

    void unsetError();

    QString fileName() const;

    void setFileName(const QString &name);

    typedef QByteArray (*EncoderFn)(const QString &fileName);

    typedef QString (*DecoderFn)(const QByteArray &localfileName);

    static QByteArray encodeName(const QString &fileName);

    static QString decodeName(const QByteArray &localFileName);

    inline static QString decodeName(const char *localFileName)

        { return decodeName(QByteArray(localFileName)); }

    static void setEncodingFunction(EncoderFn);

    static void setDecodingFunction(DecoderFn);

    bool exists() const;

    static bool exists(const QString &fileName);

    QString readLink() const;

    static QString readLink(const QString &fileName);

    inline QString symLinkTarget() const { return readLink(); }

    inline static QString symLinkTarget(const QString &fileName) { return readLink(fileName); }

    bool remove();

    static bool remove(const QString &fileName);

    bool rename(const QString &newName);

    static bool rename(const QString &oldName, const QString &newName);

    bool link(const QString &newName);

    static bool link(const QString &oldname, const QString &newName);

    bool copy(const QString &newName);

    static bool copy(const QString &fileName, const QString &newName);

    bool isSequential() const;

    bool open(OpenMode flags);

    bool open(FILE *f, OpenMode flags);

    bool open(int fd, OpenMode flags);

    virtual void close();

    qint64 size() const;

    qint64 pos() const;

    bool seek(qint64 offset);

    bool atEnd() const;

    bool flush();

    bool resize(qint64 sz);

    static bool resize(const QString &filename, qint64 sz);

    Permissions permissions() const;

    static Permissions permissions(const QString &filename);

    bool setPermissions(Permissions permissionSpec);

    static bool setPermissions(const QString &filename, Permissions permissionSpec);

    int handle() const;

    enum MemoryMapFlags {

        NoOptions = 0

    };

    uchar *map(qint64 offset, qint64 size, MemoryMapFlags flags = NoOptions);

    bool unmap(uchar *address);

    virtual QAbstractFileEngine *fileEngine() const;

#ifdef QT3_SUPPORT

    typedef Permission PermissionSpec;

    inline QT3_SUPPORT QString name() const { return fileName(); }

    inline QT3_SUPPORT void setName(const QString &aName) { setFileName(aName); }

    inline QT3_SUPPORT bool open(OpenMode aFlags, FILE *f) { return open(f, aFlags); }

    inline QT3_SUPPORT bool open(OpenMode aFlags, int fd) { return open(fd, aFlags); }

#endif

protected:

#ifdef QT_NO_QOBJECT

    QFile(QFilePrivate &dd);

#else

    QFile(QFilePrivate &dd, QObject *parent = 0);

#endif

    qint64 readData(char *data, qint64 maxlen);

    qint64 writeData(const char *data, qint64 len);

    qint64 readLineData(char *data, qint64 maxlen);

private:

    Q_DISABLE_COPY(QFile)

};

Q_DECLARE_OPERATORS_FOR_FLAGS(QFile::Permissions)

QT_END_NAMESPACE

QT_END_HEADER

#endif // QFILE_H