[gnome-logs] Handle --version command line option

[Paolo Borelli <pborelli src gnome org>]

commit 7035a18a10f8895dcdbd942125d89339dc126489
Author: Paolo Borelli <pborelli gnome org>
Date:   Thu Feb 20 22:54:13 2014 +0100

    Handle --version command line option

 configure.ac         |    2 +-
 src/gl-application.c |   23 +++++++++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 019bf4e..a6f2268 100644
--- a/configure.ac
+++ b/configure.ac
@@ -84,7 +84,7 @@ AS_IF([test "x$have_desktop_file_validate" = "xyes"],
 AM_CONDITIONAL([LOGS_ENABLE_TESTS], [test "x$testing_utilities" = "xyes"])
 
 dnl Libraries
-GIO_REQUIRED="gio-unix-2.0"
+GIO_REQUIRED="gio-unix-2.0 >= 2.39.90"
 GTK_REQUIRED="gtk+-3.0 >= 3.9.6"
 SYSTEMD_JOURNAL_REQUIRED="libsystemd-journal"
 PKG_CHECK_MODULES([LOGS], [$GIO_REQUIRED $GTK_REQUIRED $SYSTEMD_JOURNAL_REQUIRED])
diff --git a/src/gl-application.c b/src/gl-application.c
index 3d08e14..404fcb3 100644
--- a/src/gl-application.c
+++ b/src/gl-application.c
@@ -217,6 +217,26 @@ gl_application_activate (GApplication *application)
                                     priv);
 }
 
+static const GOptionEntry options[] =
+{
+    { "version", 'v', 0, G_OPTION_ARG_NONE, NULL,
+      N_("Print version information and exit"), NULL },
+    { NULL }
+};
+
+static gint
+gl_application_handle_local_options (GApplication *application,
+                                     GVariantDict *options)
+{
+    if (g_variant_dict_contains (options, "version"))
+    {
+        g_print ("%s - Version %s\n", g_get_application_name (), PACKAGE_VERSION);
+        return 0;
+    }
+
+    return -1;
+}
+
 static void
 gl_application_finalize (GObject *object)
 {
@@ -241,6 +261,8 @@ gl_application_init (GlApplication *application)
     priv->monospace_font = NULL;
     priv->desktop = g_settings_new (DESKTOP_SCHEMA);
 
+    g_application_add_main_option_entries (G_APPLICATION (application), options);
+
     changed_font = g_strconcat ("changed::", DESKTOP_MONOSPACE_FONT_NAME, NULL);
     g_signal_connect (priv->desktop, changed_font,
                       G_CALLBACK (on_monospace_font_name_changed),
@@ -261,6 +283,7 @@ gl_application_class_init (GlApplicationClass *klass)
     app_class = G_APPLICATION_CLASS (klass);
     app_class->activate = gl_application_activate;
     app_class->startup = gl_application_startup;
+    app_class->handle_local_options = gl_application_handle_local_options;
 }
 
 GtkApplication *