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/*=====================================================================
QGroundControl Open Source Ground Control Station
(c) 2009 - 2014 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
This file is part of the QGROUNDCONTROL project
QGROUNDCONTROL 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 3 of the License, or
(at your option) any later version.
QGROUNDCONTROL 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.
You should have received a copy of the GNU General Public License
along with QGROUNDCONTROL. If not, see <http://www.gnu.org/licenses/>.
======================================================================*/
/// @file
/// @brief This class mimics QTemporaryFile. We have our own implementation due to the fact that
/// QTemporaryFile implemenation differs cross platform making it unusable for our use-case.
/// Look for bug reports on QTemporaryFile keeping the file locked for details.
///
/// @author Don Gagne <don@thegagnes.com>
#include "QGCTemporaryFile.h"
#include <QDir>
#include <QStandardPaths>
QGCTemporaryFile::QGCTemporaryFile(const QString& fileTemplate, QObject* parent) :
QFile(parent),
_template(fileTemplate)
{
}
bool QGCTemporaryFile::open(QFile::OpenMode openMode)
{
QDir tempDir(QStandardPaths::writableLocation(QStandardPaths::TempLocation));
// Generate unique, non-existing filename
static const char rgDigits[] = "0123456789";
QString tempFilename;
do {
QString uniqueStr;
for (int i=0; i<6; i++) {
uniqueStr += rgDigits[qrand() % 10];
}
if (_template.contains("XXXXXX")) {
tempFilename = _template.replace("XXXXXX", uniqueStr, Qt::CaseSensitive);
} else {
tempFilename = _template + uniqueStr;
}
} while (tempDir.exists(tempFilename));
setFileName(tempDir.filePath(tempFilename));
return QFile::open(openMode);
}