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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QABSTRACTFILEENGINE_H
#define QABSTRACTFILEENGINE_H
#include <QtCore/qdir.h>
#ifdef open
#error qabstractfileengine.h must be included before any header file that defines open
#endif
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
class QFileExtension;
class QFileExtensionResult;
class QVariant;
class QAbstractFileEngineIterator;
class QAbstractFileEnginePrivate;
class Q_CORE_EXPORT QAbstractFileEngine
{
public:
enum FileFlag {
//perms (overlaps the QFile::Permission)
ReadOwnerPerm = 0x4000, WriteOwnerPerm = 0x2000, ExeOwnerPerm = 0x1000,
ReadUserPerm = 0x0400, WriteUserPerm = 0x0200, ExeUserPerm = 0x0100,
ReadGroupPerm = 0x0040, WriteGroupPerm = 0x0020, ExeGroupPerm = 0x0010,
ReadOtherPerm = 0x0004, WriteOtherPerm = 0x0002, ExeOtherPerm = 0x0001,
//types
LinkType = 0x10000,
FileType = 0x20000,
DirectoryType = 0x40000,
BundleType = 0x80000,
//flags
HiddenFlag = 0x0100000,
LocalDiskFlag = 0x0200000,
ExistsFlag = 0x0400000,
RootFlag = 0x0800000,
Refresh = 0x1000000,
//masks
PermsMask = 0x0000FFFF,
TypesMask = 0x000F0000,
FlagsMask = 0x0FF00000,
FileInfoAll = FlagsMask | PermsMask | TypesMask
};
Q_DECLARE_FLAGS(FileFlags, FileFlag)
enum FileName {
DefaultName,
BaseName,
PathName,
AbsoluteName,
AbsolutePathName,
LinkName,
CanonicalName,
CanonicalPathName,
BundleName,
NFileNames = 9
};
enum FileOwner {
OwnerUser,
OwnerGroup
};
enum FileTime {
CreationTime,
ModificationTime,
AccessTime
};
virtual ~QAbstractFileEngine();
virtual bool open(QIODevice::OpenMode openMode);
virtual bool close();
virtual bool flush();
virtual qint64 size() const;
virtual qint64 pos() const;
virtual bool seek(qint64 pos);
virtual bool isSequential() const;
virtual bool remove();
virtual bool copy(const QString &newName);
virtual bool rename(const QString &newName);
virtual bool link(const QString &newName);
virtual bool mkdir(const QString &dirName, bool createParentDirectories) const;
virtual bool rmdir(const QString &dirName, bool recurseParentDirectories) const;
virtual bool setSize(qint64 size);
virtual bool caseSensitive() const;
virtual bool isRelativePath() const;
virtual QStringList entryList(QDir::Filters filters, const QStringList &filterNames) const;
virtual FileFlags fileFlags(FileFlags type=FileInfoAll) const;
virtual bool setPermissions(uint perms);
virtual QString fileName(FileName file=DefaultName) const;
virtual uint ownerId(FileOwner) const;
virtual QString owner(FileOwner) const;
virtual QDateTime fileTime(FileTime time) const;
virtual void setFileName(const QString &file);
virtual int handle() const;
bool atEnd() const;
uchar *map(qint64 offset, qint64 size, QFile::MemoryMapFlags flags);
bool unmap(uchar *ptr);
typedef QAbstractFileEngineIterator Iterator;
virtual Iterator *beginEntryList(QDir::Filters filters, const QStringList &filterNames);
virtual Iterator *endEntryList();
virtual qint64 read(char *data, qint64 maxlen);
virtual qint64 readLine(char *data, qint64 maxlen);
virtual qint64 write(const char *data, qint64 len);
QFile::FileError error() const;
QString errorString() const;
enum Extension {
AtEndExtension,
FastReadLineExtension,
MapExtension,
UnMapExtension
};
class ExtensionOption
{};
class ExtensionReturn
{};
class MapExtensionOption : public ExtensionOption {
public:
qint64 offset;
qint64 size;
QFile::MemoryMapFlags flags;
};
class MapExtensionReturn : public ExtensionReturn {
public:
uchar *address;
};
class UnMapExtensionOption : public ExtensionOption {
public:
uchar *address;
};
virtual bool extension(Extension extension, const ExtensionOption *option = 0, ExtensionReturn *output = 0);
virtual bool supportsExtension(Extension extension) const;
// Factory
static QAbstractFileEngine *create(const QString &fileName);
protected:
void setError(QFile::FileError error, const QString &str);
QAbstractFileEngine();
QAbstractFileEngine(QAbstractFileEnginePrivate &);
QScopedPointer<QAbstractFileEnginePrivate> d_ptr;
private:
Q_DECLARE_PRIVATE(QAbstractFileEngine)
Q_DISABLE_COPY(QAbstractFileEngine)
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QAbstractFileEngine::FileFlags)
class Q_CORE_EXPORT QAbstractFileEngineHandler
{
public:
QAbstractFileEngineHandler();
virtual ~QAbstractFileEngineHandler();
virtual QAbstractFileEngine *create(const QString &fileName) const = 0;
};
class QAbstractFileEngineIteratorPrivate;
class Q_CORE_EXPORT QAbstractFileEngineIterator
{
public:
QAbstractFileEngineIterator(QDir::Filters filters, const QStringList &nameFilters);
virtual ~QAbstractFileEngineIterator();
virtual QString next() = 0;
virtual bool hasNext() const = 0;
QString path() const;
QStringList nameFilters() const;
QDir::Filters filters() const;
virtual QString currentFileName() const = 0;
virtual QFileInfo currentFileInfo() const;
QString currentFilePath() const;
protected:
enum EntryInfoType {
};
virtual QVariant entryInfo(EntryInfoType type) const;
private:
Q_DISABLE_COPY(QAbstractFileEngineIterator)
friend class QDirIterator;
friend class QDirIteratorPrivate;
void setPath(const QString &path);
QScopedPointer<QAbstractFileEngineIteratorPrivate> d;
};
QT_END_NAMESPACE
QT_END_HEADER
#endif // QABSTRACTFILEENGINE_H
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