Mercurial > hg > svcore
view base/TempWriteFile.h @ 1382:0a729b57b4e4
Merge
author | Chris Cannam |
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date | Tue, 21 Feb 2017 21:10:15 +0000 |
parents | 1c9bbbb6116a |
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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> /** * 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; }; #endif