| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the documentation of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:BSD$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** BSD License Usage |
| ** Alternatively, you may use this file under the terms of the BSD license |
| ** as follows: |
| ** |
| ** "Redistribution and use in source and binary forms, with or without |
| ** modification, are permitted provided that the following conditions are |
| ** met: |
| ** * Redistributions of source code must retain the above copyright |
| ** notice, this list of conditions and the following disclaimer. |
| ** * Redistributions in binary form must reproduce the above copyright |
| ** notice, this list of conditions and the following disclaimer in |
| ** the documentation and/or other materials provided with the |
| ** distribution. |
| ** * Neither the name of The Qt Company Ltd nor the names of its |
| ** contributors may be used to endorse or promote products derived |
| ** from this software without specific prior written permission. |
| ** |
| ** |
| ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| ** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| |
| void wrapInFunction() |
| { |
| |
| //! [0] |
| QProcess builder; |
| builder.setProcessChannelMode(QProcess::MergedChannels); |
| builder.start("make", QStringList() << "-j2"); |
| |
| if (!builder.waitForFinished()) |
| qDebug() << "Make failed:" << builder.errorString(); |
| else |
| qDebug() << "Make output:" << builder.readAll(); |
| //! [0] |
| |
| |
| //! [1] |
| QProcess more; |
| more.start("more"); |
| more.write("Text to display"); |
| more.closeWriteChannel(); |
| // QProcess will emit readyRead() once "more" starts printing |
| //! [1] |
| |
| |
| //! [2] |
| command1 | command2 |
| //! [2] |
| |
| |
| //! [3] |
| QProcess process1; |
| QProcess process2; |
| |
| process1.setStandardOutputProcess(&process2); |
| |
| process1.start("command1"); |
| process2.start("command2"); |
| //! [3] |
| |
| |
| //! [4] |
| class SandboxProcess : public QProcess |
| { |
| ... |
| protected: |
| void setupChildProcess() override; |
| ... |
| }; |
| |
| void SandboxProcess::setupChildProcess() |
| { |
| // Drop all privileges in the child process, and enter |
| // a chroot jail. |
| #if defined Q_OS_UNIX |
| ::setgroups(0, 0); |
| ::chroot("/etc/safe"); |
| ::chdir("/"); |
| ::setgid(safeGid); |
| ::setuid(safeUid); |
| ::umask(0); |
| #endif |
| } |
| |
| //! [4] |
| |
| |
| //! [5] |
| QProcess process; |
| process.start("del /s *.txt"); |
| // same as process.start("del", QStringList() << "/s" << "*.txt"); |
| ... |
| //! [5] |
| |
| |
| //! [6] |
| QProcess process; |
| process.start("dir \"My Documents\""); |
| //! [6] |
| |
| |
| //! [7] |
| QProcess process; |
| process.start("dir \"Epic 12\"\"\" Singles\""); |
| //! [7] |
| |
| |
| //! [8] |
| QStringList environment = QProcess::systemEnvironment(); |
| // environment = {"PATH=/usr/bin:/usr/local/bin", |
| // "USER=greg", "HOME=/home/greg"} |
| //! [8] |
| |
| } |