157 lines
4.7 KiB
C++
157 lines
4.7 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2020 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 QFILEDEVICE_H
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#define QFILEDEVICE_H
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#include <QtCore/qiodevice.h>
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#include <QtCore/qstring.h>
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QT_BEGIN_NAMESPACE
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class QDateTime;
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class QFileDevicePrivate;
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class Q_CORE_EXPORT QFileDevice : public QIODevice
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{
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#ifndef QT_NO_QOBJECT
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Q_OBJECT
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#endif
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Q_DECLARE_PRIVATE(QFileDevice)
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public:
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enum FileError {
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NoError = 0,
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ReadError = 1,
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WriteError = 2,
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FatalError = 3,
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ResourceError = 4,
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OpenError = 5,
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AbortError = 6,
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TimeOutError = 7,
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UnspecifiedError = 8,
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RemoveError = 9,
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RenameError = 10,
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PositionError = 11,
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ResizeError = 12,
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PermissionsError = 13,
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CopyError = 14
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};
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enum FileTime {
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FileAccessTime,
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FileBirthTime,
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FileMetadataChangeTime,
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FileModificationTime
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};
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enum Permission {
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ReadOwner = 0x4000, WriteOwner = 0x2000, ExeOwner = 0x1000,
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ReadUser = 0x0400, WriteUser = 0x0200, ExeUser = 0x0100,
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ReadGroup = 0x0040, WriteGroup = 0x0020, ExeGroup = 0x0010,
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ReadOther = 0x0004, WriteOther = 0x0002, ExeOther = 0x0001
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};
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Q_DECLARE_FLAGS(Permissions, Permission)
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enum FileHandleFlag {
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AutoCloseHandle = 0x0001,
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DontCloseHandle = 0
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};
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Q_DECLARE_FLAGS(FileHandleFlags, FileHandleFlag)
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~QFileDevice();
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FileError error() const;
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void unsetError();
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void close() override;
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bool isSequential() const override;
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int handle() const;
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virtual QString fileName() const;
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qint64 pos() const override;
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bool seek(qint64 offset) override;
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bool atEnd() const override;
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bool flush();
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qint64 size() const override;
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virtual bool resize(qint64 sz);
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virtual Permissions permissions() const;
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virtual bool setPermissions(Permissions permissionSpec);
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enum MemoryMapFlag {
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NoOptions = 0,
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MapPrivateOption = 0x0001
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};
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Q_DECLARE_FLAGS(MemoryMapFlags, MemoryMapFlag)
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uchar *map(qint64 offset, qint64 size, MemoryMapFlags flags = NoOptions);
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bool unmap(uchar *address);
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QDateTime fileTime(QFileDevice::FileTime time) const;
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bool setFileTime(const QDateTime &newDate, QFileDevice::FileTime fileTime);
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protected:
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QFileDevice();
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#ifdef QT_NO_QOBJECT
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QFileDevice(QFileDevicePrivate &dd);
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#else
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explicit QFileDevice(QObject *parent);
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QFileDevice(QFileDevicePrivate &dd, QObject *parent = nullptr);
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#endif
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qint64 readData(char *data, qint64 maxlen) override;
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qint64 writeData(const char *data, qint64 len) override;
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qint64 readLineData(char *data, qint64 maxlen) override;
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private:
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Q_DISABLE_COPY(QFileDevice)
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};
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Q_DECLARE_OPERATORS_FOR_FLAGS(QFileDevice::Permissions)
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Q_DECLARE_OPERATORS_FOR_FLAGS(QFileDevice::FileHandleFlags)
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Q_DECLARE_OPERATORS_FOR_FLAGS(QFileDevice::MemoryMapFlags)
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QT_END_NAMESPACE
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#endif // QFILEDEVICE_H
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