231 lines
7.8 KiB
C++
231 lines
7.8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QFSFILEENGINE_P_H
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#define QFSFILEENGINE_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include "qplatformdefs.h"
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#include "QtCore/private/qabstractfileengine_p.h"
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#include <QtCore/private/qfilesystementry_p.h>
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#include <QtCore/private/qfilesystemmetadata_p.h>
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#include <qhash.h>
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#ifndef QT_NO_FSFILEENGINE
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QT_BEGIN_NAMESPACE
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class QFSFileEnginePrivate;
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class Q_CORE_EXPORT QFSFileEngine : public QAbstractFileEngine
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{
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Q_DECLARE_PRIVATE(QFSFileEngine)
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public:
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QFSFileEngine();
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explicit QFSFileEngine(const QString &file);
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~QFSFileEngine();
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bool open(QIODevice::OpenMode openMode) Q_DECL_OVERRIDE;
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bool open(QIODevice::OpenMode flags, FILE *fh);
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bool close() Q_DECL_OVERRIDE;
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bool flush() Q_DECL_OVERRIDE;
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bool syncToDisk() Q_DECL_OVERRIDE;
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qint64 size() const Q_DECL_OVERRIDE;
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qint64 pos() const Q_DECL_OVERRIDE;
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bool seek(qint64) Q_DECL_OVERRIDE;
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bool isSequential() const Q_DECL_OVERRIDE;
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bool remove() Q_DECL_OVERRIDE;
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bool copy(const QString &newName) Q_DECL_OVERRIDE;
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bool rename(const QString &newName) Q_DECL_OVERRIDE;
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bool renameOverwrite(const QString &newName) Q_DECL_OVERRIDE;
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bool link(const QString &newName) Q_DECL_OVERRIDE;
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bool mkdir(const QString &dirName, bool createParentDirectories) const Q_DECL_OVERRIDE;
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bool rmdir(const QString &dirName, bool recurseParentDirectories) const Q_DECL_OVERRIDE;
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bool setSize(qint64 size) Q_DECL_OVERRIDE;
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bool caseSensitive() const Q_DECL_OVERRIDE;
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bool isRelativePath() const Q_DECL_OVERRIDE;
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QStringList entryList(QDir::Filters filters, const QStringList &filterNames) const Q_DECL_OVERRIDE;
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FileFlags fileFlags(FileFlags type) const Q_DECL_OVERRIDE;
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bool setPermissions(uint perms) Q_DECL_OVERRIDE;
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QString fileName(FileName file) const Q_DECL_OVERRIDE;
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uint ownerId(FileOwner) const Q_DECL_OVERRIDE;
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QString owner(FileOwner) const Q_DECL_OVERRIDE;
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bool setFileTime(const QDateTime &newDate, FileTime time) Q_DECL_OVERRIDE;
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QDateTime fileTime(FileTime time) const Q_DECL_OVERRIDE;
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void setFileName(const QString &file) Q_DECL_OVERRIDE;
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int handle() const Q_DECL_OVERRIDE;
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#ifndef QT_NO_FILESYSTEMITERATOR
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Iterator *beginEntryList(QDir::Filters filters, const QStringList &filterNames) Q_DECL_OVERRIDE;
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Iterator *endEntryList() Q_DECL_OVERRIDE;
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#endif
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qint64 read(char *data, qint64 maxlen) Q_DECL_OVERRIDE;
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qint64 readLine(char *data, qint64 maxlen) Q_DECL_OVERRIDE;
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qint64 write(const char *data, qint64 len) Q_DECL_OVERRIDE;
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bool clone(int sourceHandle) override;
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bool extension(Extension extension, const ExtensionOption *option = 0, ExtensionReturn *output = 0) Q_DECL_OVERRIDE;
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bool supportsExtension(Extension extension) const Q_DECL_OVERRIDE;
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//FS only!!
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bool open(QIODevice::OpenMode flags, int fd);
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bool open(QIODevice::OpenMode flags, int fd, QFile::FileHandleFlags handleFlags);
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bool open(QIODevice::OpenMode flags, FILE *fh, QFile::FileHandleFlags handleFlags);
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static bool setCurrentPath(const QString &path);
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static QString currentPath(const QString &path = QString());
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static QString homePath();
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static QString rootPath();
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static QString tempPath();
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static QFileInfoList drives();
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protected:
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QFSFileEngine(QFSFileEnginePrivate &dd);
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};
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class Q_AUTOTEST_EXPORT QFSFileEnginePrivate : public QAbstractFileEnginePrivate
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{
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Q_DECLARE_PUBLIC(QFSFileEngine)
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public:
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#ifdef Q_OS_WIN
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static QString longFileName(const QString &path);
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#endif
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QFileSystemEntry fileEntry;
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QIODevice::OpenMode openMode;
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bool nativeOpen(QIODevice::OpenMode openMode);
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bool openFh(QIODevice::OpenMode flags, FILE *fh);
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bool openFd(QIODevice::OpenMode flags, int fd);
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bool nativeClose();
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bool closeFdFh();
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bool nativeFlush();
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bool nativeSyncToDisk();
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bool flushFh();
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qint64 nativeSize() const;
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#ifndef Q_OS_WIN
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qint64 sizeFdFh() const;
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#endif
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qint64 nativePos() const;
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qint64 posFdFh() const;
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bool nativeSeek(qint64);
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bool seekFdFh(qint64);
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qint64 nativeRead(char *data, qint64 maxlen);
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qint64 readFdFh(char *data, qint64 maxlen);
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qint64 nativeReadLine(char *data, qint64 maxlen);
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qint64 readLineFdFh(char *data, qint64 maxlen);
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qint64 nativeWrite(const char *data, qint64 len);
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qint64 writeFdFh(const char *data, qint64 len);
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int nativeHandle() const;
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bool nativeIsSequential() const;
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#ifndef Q_OS_WIN
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bool isSequentialFdFh() const;
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#endif
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uchar *map(qint64 offset, qint64 size, QFile::MemoryMapFlags flags);
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bool unmap(uchar *ptr);
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void unmapAll();
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mutable QFileSystemMetaData metaData;
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FILE *fh;
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#ifdef Q_OS_WIN
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HANDLE fileHandle;
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HANDLE mapHandle;
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QHash<uchar *, DWORD /* offset % AllocationGranularity */> maps;
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mutable int cachedFd;
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mutable DWORD fileAttrib;
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#else
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QHash<uchar *, QPair<int /*offset % PageSize*/, size_t /*length + offset % PageSize*/> > maps;
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#endif
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int fd;
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enum LastIOCommand
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{
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IOFlushCommand,
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IOReadCommand,
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IOWriteCommand
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};
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LastIOCommand lastIOCommand;
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bool lastFlushFailed;
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bool closeFileHandle;
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mutable uint is_sequential : 2;
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mutable uint tried_stat : 1;
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mutable uint need_lstat : 1;
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mutable uint is_link : 1;
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#if defined(Q_OS_WIN)
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bool doStat(QFileSystemMetaData::MetaDataFlags flags) const;
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#else
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bool doStat(QFileSystemMetaData::MetaDataFlags flags = QFileSystemMetaData::PosixStatFlags) const;
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#endif
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bool isSymlink() const;
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#if defined(Q_OS_WIN32)
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int sysOpen(const QString &, int flags);
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#endif
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protected:
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QFSFileEnginePrivate();
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void init();
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QAbstractFileEngine::FileFlags getPermissions(QAbstractFileEngine::FileFlags type) const;
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};
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QT_END_NAMESPACE
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#endif // QT_NO_FSFILEENGINE
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#endif // QFSFILEENGINE_P_H
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