Add initial command-line interface

This adds the first option to the command-line interface: version information.
More will be needed in the future, but I'm not ready for interface design yet,
so it will wait until later.

diff --git a/tilda.c b/tilda.c
index c712fc7..7656551 100644 (file)
--- a/tilda.c
+++ b/tilda.c
@@ -1,4 +1,5 @@
 #include <glib.h>
+#include <stdlib.h>
 
 #include "tilda.h"
 #include "tilda-window.h"
@@ -113,6 +114,52 @@ tilda_del_window (gint number)
        }
 }
 
+static void
+tilda_parse_command_line (gint argc, gchar *argv[])
+{
+       debug_enter ();
+
+       gboolean version = FALSE;
+
+       /* All of the various command-line options */
+       const GOptionEntry cl_opts[] = {
+               { "version",                    'V', 0, G_OPTION_ARG_NONE,              &version,                       N_("Show version information"), NULL },
+               { NULL },
+       };
+
+       /* Set up the command-line parser */
+       GError *error = NULL;
+       GOptionContext *context = g_option_context_new (NULL);
+       g_option_context_add_main_entries (context, cl_opts, NULL);
+       g_option_context_add_group (context, gtk_get_option_group (TRUE));
+       g_option_context_parse (context, &argc, &argv, &error);
+       g_option_context_free (context);
+
+       /* Check for unknown options, and give a nice message if there are some */
+       if (error)
+       {
+               g_printerr (_("Error parsing command-line options: %s\n"), error->message);
+               g_printerr (_("The command \"tilda --help\" will show all possible options\n"));
+               g_error_free (error);
+               exit (EXIT_FAILURE);
+       }
+
+       /* If we need to show the version, show it then exit normally */
+       if (version)
+       {
+               g_print ("%s\n\n", TILDA_VERSION);
+
+               g_print ("Copyright (c) 2005-2008 Tristan Sloughter (sloutri@iit.edu)\n");
+               g_print ("Copyright (c) 2005-2008 Ira W. Snyder (tilda@irasnyder.com)\n\n");
+
+               g_print ("This program comes with ABSOLUTELY NO WARRANTY.\n");
+               g_print ("This is free software, and you are welcome to redistribute it\n");
+               g_print ("under certain conditions. See the file COPYING for details.\n");
+
+               exit (EXIT_SUCCESS);
+       }
+}
+
 int main (int argc, char *argv[])
 {
        debug_enter ();
@@ -126,6 +173,9 @@ int main (int argc, char *argv[])
        textdomain (PACKAGE);
 #endif
 
+       /* Parse the command-line options */
+       tilda_parse_command_line (argc, argv);
+
        /* Initialize GTK+ (and the GObject system) */
        gtk_init (&argc, &argv);
 

diff --git a/tilda.h b/tilda.h
index 96adfa1..3262d8c 100644 (file)
--- a/tilda.h
+++ b/tilda.h
@@ -23,6 +23,9 @@
        #define N_(X) X
 #endif
 
+// FIXME: remove when the project is autoconfed
+#define TILDA_VERSION "0.10.0pre"
+
 /* Project-global variables */
 extern DBusGConnection *dbus_connection;