Newer
Older
/****************************************************************************
*
* (c) 2009-2016 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
*
* QGroundControl is licensed according to the terms in the file
* COPYING.md in the root of the source code directory.
*
****************************************************************************/
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
/// @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);
}