afb81b8278
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64 lines
1.8 KiB
C++
64 lines
1.8 KiB
C++
#define GI_INLINE 1
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#include <gio/gio.hpp>
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#include <iostream>
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namespace GObject_ = gi::repository::GObject;
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namespace GLib = gi::repository::GLib;
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namespace Gio = gi::repository::Gio;
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static GLib::MainLoop loop;
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// many calls here support GError
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// so typically will throw here instead
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// (unless GError output is explicitly requested in call signature)
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// NOTE abundancy of gi::expect not generally needed;
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// only needed when using --dl and --expected
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static void
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on_reply(GObject_::Object ob, Gio::AsyncResult result)
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{
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// if not caught here, it will be caught before returning to plain C
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#if GI_CONFIG_EXCEPTIONS
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try {
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#endif
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auto connection = gi::object_cast<Gio::DBusConnection>(ob);
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auto call_result = gi::expect(connection.call_finish(result));
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// get single array child
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auto names = gi::expect(call_result.get_child_value(0));
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int count = gi::expect(names.n_children());
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std::cout << count << " message bus names: " << std::endl;
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for (int i = 0; i < count; ++i)
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std::cout << gi::expect(
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gi::expect(names.get_child_value(i)).get_string(nullptr))
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<< std::endl;
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#if GI_CONFIG_EXCEPTIONS
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} catch (const GLib::Error &error) {
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std::cerr << "error: '" << error.what() << "'." << std::endl;
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}
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#endif
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// quit when idle
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GLib::idle_add([]() {
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loop.quit();
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return GLib::SOURCE_REMOVE_;
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});
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}
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int
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main(int argc, char ** /*argv*/)
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{
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auto bustype = argc <= 1 ? Gio::BusType::SESSION_ : Gio::BusType::SYSTEM_;
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auto connection = gi::expect(Gio::bus_get_sync(bustype));
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connection.call("org.freedesktop.DBus", "/org/freedesktop/DBus",
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"org.freedesktop.DBus", "ListNames", nullptr, nullptr,
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Gio::DBusCallFlags::NONE_, -1, nullptr, on_reply);
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loop = gi::expect(GLib::MainLoop::new_());
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loop.run();
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}
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