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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 file copyright 2006 Chris Cannam.
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 _TEMP_DIRECTORY_H_
#define _TEMP_DIRECTORY_H_
#include <QString>
#include <QMutex>
#include <exception>
/**
* A class that manages the creation and removal of a temporary
* directory tree to store data during the program run. There is one
* root temporary directory for the program, created on demand and
* deleted when the program exits.
*
* This class is thread safe.
*/
class TempDirectory
{
public:
static TempDirectory *getInstance();
virtual ~TempDirectory();
/**
* Return the path of the directory in which the temporary
* directory has been or will be created. This directory is
* particular to this application, although not to this instance
* of it, and it will not be removed when the application exits.
* Persistent cache data or similar may be placed in this
* directory or other, non-temporary subdirectories of it.
*
* If this directory does not exist, it will be created. Throw
* DirectoryCreationFailed if the directory cannot be created.
*/
QString getContainingPath();
/**
* Create the root temporary directory if necessary, and return
* its path. This directory will be removed when the application
* exits.
*
* Throw DirectoryCreationFailed if the directory cannot be
* created.
*/
QString getPath();
/**
* Create an immediate subdirectory of the root temporary
* directory of the given name, if it doesn't already exist, and
* return its path. This directory will be removed when the
* application exits.
*
* Throw DirectoryCreationFailed if the directory cannot be
* created.
*/
QString getSubDirectoryPath(QString subdir);
/**
* Delete the temporary directory (before exiting).
*/
void cleanup();
protected:
TempDirectory();
QString createTempDirectoryIn(QString inDir);
void cleanupDirectory(QString tmpDir);
void cleanupAbandonedDirectories(QString svDir);
QString m_tmpdir;
QMutex m_mutex;
static TempDirectory *m_instance;
};
#endif
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