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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Sonic Visualiser
An audio file viewer and annotation editor.
Centre for Digital Music, Queen Mary, University of London.
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. See the file
COPYING included with this distribution for more information.
*/
#ifndef SV_TEMP_WRITE_FILE_H
#define SV_TEMP_WRITE_FILE_H
#include <QTemporaryFile>
namespace sv {
/**
* A class that manages the creation of a temporary file with a given
* prefix and the renaming of that file to the prefix after use. For
* use when saving a file over an existing one, to avoid clobbering
* the original before the save is complete.
*/
class TempWriteFile
{
public:
TempWriteFile(QString targetFileName); // may throw FileOperationFailed
/**
* Destroy the temporary file object. If moveToTarget has not
* been called, the associated temporary file will be deleted
* without being copied to the target location.
*/
~TempWriteFile();
/**
* Return the name of the temporary file. Unless the constructor
* threw an exception, this file will have been created already
* (but it will not be open).
*
* (If moveToTarget has already been called, return an empty
* string.)
*/
QString getTemporaryFilename();
/**
* Rename the temporary file to the target filename.
*/
void moveToTarget();
protected:
QString m_target;
QString m_temp;
};
} // end namespace sv
#endif
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