+\f
+
+static error_t
+parse_non_options (int key, char *arg, struct argp_state *state)
+{
+ struct source_stream *ss = state->input;
+
+ if ( NULL == ss )
+ return 0;
+
+ switch (key)
+ {
+ case ARGP_KEY_ARG:
+ {
+ gchar *filename = NULL;
+ gchar *utf8 = NULL;
+ const gchar *local_encoding = NULL;
+ gsize written = -1;
+ const gboolean local_is_utf8 = g_get_charset (&local_encoding);
+
+ /* There seems to be no Glib function to convert from local encoding
+ to filename encoding. Therefore it has to be done in two steps:
+ the intermediate encoding is UTF8.
+
+ Either step could fail. However, in many cases the file can still
+ be loaded even if the conversion fails. So in those cases, after showing
+ a warning, we simply copy the locally encoded filename to the destination
+ and hope for the best.
+ */
+
+ if ( local_is_utf8)
+ {
+ utf8 = xstrdup (arg);
+ }
+ else
+ {
+ GError *err = NULL;
+ utf8 = g_locale_to_utf8 (arg, -1, NULL, &written, &err);
+ if ( NULL == utf8)
+ {
+ g_warning ("Cannot convert filename from local encoding \"%s\" to UTF-8: %s",
+ local_encoding,
+ err->message);
+ g_clear_error (&err);
+ }
+ }
+
+ if ( NULL != utf8)
+ {
+ GError *err = NULL;
+ filename = g_filename_from_utf8 (utf8, written, NULL, NULL, &err);
+ if ( NULL == filename)
+ {
+ g_warning ("Cannot convert filename from UTF8 to filename encoding: %s",
+ err->message);
+ g_clear_error (&err);
+ }
+ }
+
+ g_free (utf8);
+
+ if ( filename == NULL)
+ filename = xstrdup (arg);
+
+ psppire_window_load (PSPPIRE_WINDOW (the_data_window), filename);
+
+ g_free (filename);
+ break;
+ }
+ default:
+ return ARGP_ERR_UNKNOWN;
+ }
+ return 0;
+}
+
+
+const struct argp non_option_argp = {NULL, parse_non_options, 0, 0, 0, 0, 0};
+
+
+const char *
+output_file_name (void)
+{
+ const char *dir = default_output_path ();
+ static char *filename = NULL;
+
+ if ( NULL == filename )
+ filename = xasprintf ("%s%s", dir, OUTPUT_FILE_NAME);
+
+ return filename;
+}