qfileinfo.h

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** Copyright (C) 2000-2005 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
** 
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 2 of the License, or (at your
** option) any later version.
** 
** A copy of the GNU GPL license version 2 is included in this package as 
** LICENSE.GPL.
**
** This program is distributed in the hope that it will be useful, but
** WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
** See the GNU General Public License for more details.
**
** In addition, as a special exception Trolltech gives permission to link
** the code of this program with Qtopia applications copyrighted, developed
** and distributed by Trolltech under the terms of the Qtopia Personal Use
** License Agreement. You must comply with the GNU General Public License
** in all respects for all of the code used other than the applications
** licensed under the Qtopia Personal Use License Agreement. If you modify
** this file, you may extend this exception to your version of the file,
** but you are not obligated to do so. If you do not wish to do so, delete
** this exception statement from your version.
** 
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact [e-mail] if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#ifndef QFILEINFO_H
#define QFILEINFO_H

#ifndef QT_H
#include "qfile.h"
#include "qdatetime.h"
#endif // QT_H


class QDir;
struct QFileInfoCache;
template <class T> class QDeepCopy;


class Q_EXPORT QFileInfo
{
public:
    enum PermissionSpec {
	ReadOwner = 04000, WriteOwner = 02000, ExeOwner = 01000,
	ReadUser  = 00400, WriteUser  = 00200, ExeUser  = 00100,
	ReadGroup = 00040, WriteGroup = 00020, ExeGroup = 00010,
	ReadOther = 00004, WriteOther = 00002, ExeOther = 00001 };

    QFileInfo();
    QFileInfo( const QString &file );
    QFileInfo( const QFile & );
#ifndef QT_NO_DIR
    QFileInfo( const QDir &, const QString &fileName );
#endif
    QFileInfo( const QFileInfo & );
   ~QFileInfo();

    QFileInfo  &operator=( const QFileInfo & );

    void	setFile( const QString &file );
    void	setFile( const QFile & );
#ifndef QT_NO_DIR
    void	setFile( const QDir &, const QString &fileName );
#endif
    bool	exists()	const;
    void	refresh()	const;
    bool	caching()	const;
    void	setCaching( bool );

    QString	filePath()	const;
    QString	fileName()	const;
#ifndef QT_NO_DIR //###
    QString	absFilePath()	const;
#endif
    QString	baseName( bool complete = FALSE ) const;
    QString	extension( bool complete = TRUE ) const;

#ifndef QT_NO_DIR //###
    QString	dirPath( bool absPath = FALSE ) const;
#endif
#ifndef QT_NO_DIR
    QDir	dir( bool absPath = FALSE )	const;
#endif
    bool	isReadable()	const;
    bool	isWritable()	const;
    bool	isExecutable()	const;
    bool 	isHidden()      const;

#ifndef QT_NO_DIR //###
    bool	isRelative()	const;
    bool	convertToAbs();
#endif

    bool	isFile()	const;
    bool	isDir()		const;
    bool	isSymLink()	const;

    QString	readLink()	const;

    QString	owner()		const;
    uint	ownerId()	const;
    QString	group()		const;
    uint	groupId()	const;

    bool	permission( int permissionSpec ) const;

#if (QT_VERSION-0 >= 0x040000)
#error "QFileInfo::size() should return QIODevice::Offset instead of uint"
#elif defined(QT_ABI_QT4)
    QIODevice::Offset size()	const;
#else
    uint	size()		const;
#endif

    QDateTime	created()	const;
    QDateTime	lastModified()	const;
    QDateTime	lastRead()	const;

private:
    void	doStat() const;
    static void slashify( QString & );
    static void makeAbs( QString & );

    QString	fn;
    QFileInfoCache *fic;
    bool	cache;
#if defined(Q_OS_UNIX)
    bool        symLink;
#endif

    void detach();
    friend class QDeepCopy< QFileInfo >;
};


inline bool QFileInfo::caching() const
{
    return cache;
}


#endif // QFILEINFO_H