summaryrefslogtreecommitdiffstats
path: root/doc/src/snippets/code/src_corelib_io_qprocess.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'doc/src/snippets/code/src_corelib_io_qprocess.cpp')
-rw-r--r--doc/src/snippets/code/src_corelib_io_qprocess.cpp134
1 files changed, 134 insertions, 0 deletions
diff --git a/doc/src/snippets/code/src_corelib_io_qprocess.cpp b/doc/src/snippets/code/src_corelib_io_qprocess.cpp
new file mode 100644
index 0000000000..64fb17a7c7
--- /dev/null
+++ b/doc/src/snippets/code/src_corelib_io_qprocess.cpp
@@ -0,0 +1,134 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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 Nokia Corporation and its Subsidiary(-ies) 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();
+ ...
+};
+
+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 \"\"\"My Documents\"\"\"");
+//! [7]
+
+
+//! [8]
+QStringList environment = QProcess::systemEnvironment();
+// environment = {"PATH=/usr/bin:/usr/local/bin",
+// "USER=greg", "HOME=/home/greg"}
+//! [8]
+
+}