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sclockedfile.h
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sclockedfile.h
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/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
/***************************************************************************
copyright : (C) 2010 by Marcus Holland-Moritz
email : scribus@mhxnet.de
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#ifndef SCLOCKEDFILE_H
#define SCLOCKEDFILE_H
#include "scconfig.h"
#include "scribusapi.h"
#include <QFile>
#include <QString>
#include <QTemporaryFile>
class QFileInfo;
/**
* @brief Base class for locked file access
* @author Marcus Holland-Moritz
*/
class ScLockedFile
{
public:
virtual ~ScLockedFile();
void setName(const QString & name);
const QString & name() const { return m_fileName; }
bool createPath() const;
bool lock();
bool unlock();
bool locked() const { return m_isLocked; }
bool exists() const;
bool remove() const;
virtual bool open() = 0;
virtual bool commit() = 0;
virtual QIODevice *io() = 0;
static const QString lockSuffix;
protected:
ScLockedFile();
ScLockedFile(const QString & name);
QString m_fileName;
bool m_isOpened;
private:
bool m_isLocked;
QString lockName() const;
};
/**
* @brief Read-only locked file access
* @author Marcus Holland-Moritz
*/
class ScLockedFileRO : public ScLockedFile
{
public:
ScLockedFileRO();
ScLockedFileRO(const QString & name);
virtual bool open();
virtual bool commit();
virtual QIODevice *io() { return &m_file; }
private:
QFile m_file;
};
/**
* @brief Read/write locked file access
* @author Marcus Holland-Moritz
*/
class ScLockedFileRW : public ScLockedFile
{
public:
ScLockedFileRW();
ScLockedFileRW(const QString & name);
virtual bool open();
virtual bool commit();
virtual QIODevice *io() { return &m_file; }
private:
QTemporaryFile m_file;
static QString templateName(const QFileInfo & info);
};
#endif