1
2
3
4
5
6
7
8
9
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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "ping-common.h"
#include "complexping.h"
#include <QCoreApplication>
#include <QDBusInterface>
#include <QDBusReply>
#include <QDBusServiceWatcher>
#include <QDebug>
#include <QProcess>
#include <iostream>
#include <string>
void Ping::start(const QString &name)
{
if (name != SERVICE_NAME)
return;
auto connection = QDBusConnection::sessionBus();
// find our remote
auto iface = new QDBusInterface(SERVICE_NAME, "/", "org.example.QtDBus.ComplexPong.Pong",
connection, this);
if (!iface->isValid()) {
qWarning().noquote() << connection.lastError().message();
QCoreApplication::instance()->quit();
}
connect(iface, SIGNAL(aboutToQuit()), QCoreApplication::instance(), SLOT(quit()));
std::string s;
while (true) {
std::cout << qPrintable(tr("Ask your question: ")) << std::flush;
std::getline(std::cin, s);
auto line = QString::fromStdString(s).trimmed();
if (line.isEmpty()) {
iface->call("quit");
return;
} else if (line == "value") {
QVariant reply = iface->property("value");
if (!reply.isNull())
std::cout << "value = " << qPrintable(reply.toString()) << std::endl;
} else if (line.startsWith("value=")) {
iface->setProperty("value", line.mid(6));
} else {
QDBusReply<QDBusVariant> reply = iface->call("query", line);
if (reply.isValid()) {
std::cout << qPrintable(tr("Reply was: %1").arg(reply.value().variant().toString()))
<< std::endl;
}
}
if (iface->lastError().isValid())
qWarning().noquote() << tr("Call failed: %1").arg(iface->lastError().message());
}
}
int main(int argc, char **argv)
{
QCoreApplication app(argc, argv);
if (!QDBusConnection::sessionBus().isConnected()) {
qWarning().noquote() << QCoreApplication::translate(
"complexping",
"Cannot connect to the D-Bus session bus.\n"
"To start it, run:\n"
"\teval `dbus-launch --auto-syntax`");
return 1;
}
QDBusServiceWatcher serviceWatcher(SERVICE_NAME, QDBusConnection::sessionBus(),
QDBusServiceWatcher::WatchForRegistration);
Ping ping;
QObject::connect(&serviceWatcher, &QDBusServiceWatcher::serviceRegistered,
&ping, &Ping::start);
QProcess pong;
pong.start("./complexpong");
app.exec();
}
|
