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https://gitlab.gnome.org/GNOME/glib.git
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87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
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#include <gio/gio.h>
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static gchar *opt_name = NULL;
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static gboolean opt_system_bus = FALSE;
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static gboolean opt_auto_start = FALSE;
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static GOptionEntry opt_entries[] =
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{
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{ "name", 'n', 0, G_OPTION_ARG_STRING, &opt_name, "Name to watch", NULL },
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{ "system-bus", 's', 0, G_OPTION_ARG_NONE, &opt_system_bus, "Use the system-bus instead of the session-bus", NULL },
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{ "auto-start", 'a', 0, G_OPTION_ARG_NONE, &opt_auto_start, "Instruct the bus to launch an owner for the name", NULL},
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{ NULL}
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};
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static void
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on_name_appeared (GDBusConnection *connection,
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const gchar *name,
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const gchar *name_owner,
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gpointer user_data)
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{
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g_print ("Name %s on %s is owned by %s\n",
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name,
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opt_system_bus ? "the system bus" : "the session bus",
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name_owner);
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}
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static void
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on_name_vanished (GDBusConnection *connection,
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const gchar *name,
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gpointer user_data)
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{
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g_print ("Name %s does not exist on %s\n",
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name,
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opt_system_bus ? "the system bus" : "the session bus");
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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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guint watcher_id;
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GMainLoop *loop;
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GOptionContext *opt_context;
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GError *error;
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GBusNameWatcherFlags flags;
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error = NULL;
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opt_context = g_option_context_new ("g_bus_watch_name() example");
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g_option_context_set_summary (opt_context,
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"Example: to watch the power manager on the session bus, use:\n"
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"\n"
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" ./example-watch-name -n org.gnome.PowerManager");
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g_option_context_add_main_entries (opt_context, opt_entries, NULL);
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if (!g_option_context_parse (opt_context, &argc, &argv, &error))
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{
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g_printerr ("Error parsing options: %s", error->message);
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goto out;
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}
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if (opt_name == NULL)
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{
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g_printerr ("Incorrect usage, try --help.\n");
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goto out;
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}
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flags = G_BUS_NAME_WATCHER_FLAGS_NONE;
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if (opt_auto_start)
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flags |= G_BUS_NAME_WATCHER_FLAGS_AUTO_START;
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watcher_id = g_bus_watch_name (opt_system_bus ? G_BUS_TYPE_SYSTEM : G_BUS_TYPE_SESSION,
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opt_name,
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flags,
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on_name_appeared,
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on_name_vanished,
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NULL,
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NULL);
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loop = g_main_loop_new (NULL, FALSE);
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g_main_loop_run (loop);
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g_bus_unwatch_name (watcher_id);
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out:
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g_option_context_free (opt_context);
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g_free (opt_name);
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return 0;
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}
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