1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the test suite of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:GPL-EXCEPT$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU
19** General Public License version 3 as published by the Free Software
20** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
21** included in the packaging of this file. Please review the following
22** information to ensure the GNU General Public License requirements will
23** be met: https://www.gnu.org/licenses/gpl-3.0.html.
24**
25** $QT_END_LICENSE$
26**
27****************************************************************************/
28#include <QCoreApplication>
29#include <QFile>
30
31#include <stdio.h>
32
33int main(int argc, char **argv)
34{
35 QCoreApplication ca(argc, argv);
36 QFile f;
37 f.open(stdin, ioFlags: QIODevice::ReadOnly);
38 QByteArray input;
39 char buf[1024];
40 qint64 len;
41 while ((len = f.read(data: buf, maxlen: 1024)) > 0)
42 input.append(s: buf, len);
43 f.close();
44 QFile f2("fileWriterProcess.txt");
45 if (!f2.open(flags: QIODevice::WriteOnly | QIODevice::Truncate)) {
46 fprintf(stderr, format: "Cannot open %s for writing: %s\n",
47 qPrintable(f2.fileName()), qPrintable(f2.errorString()));
48 return 1;
49 }
50 f2.write(data: input);
51 f2.close();
52 return 0;
53}
54

source code of qtbase/tests/auto/corelib/io/qprocess/fileWriterProcess/main.cpp