+ tmp_dir = NULL;
+}
+
+gchar*
+ev_tmp_filename (void)
+{
+ gchar *basename;
+ gchar *filename = NULL;
+
+ if (tmp_dir == NULL) {
+ gboolean exists;
+ gchar *dirname;
+
+ dirname = g_strdup_printf ("evince-%u", getpid());
+ tmp_dir = g_build_filename (g_get_tmp_dir (),
+ dirname,
+ NULL);
+ g_free (dirname);
+
+ exists = ensure_dir_exists (tmp_dir);
+ g_assert (exists);
+ }
+
+
+ do {
+ if (filename != NULL)
+ g_free (filename);
+
+ basename = g_strdup_printf ("document-%d", count ++);
+
+ filename = g_build_filename (tmp_dir, basename, NULL);
+
+ g_free (basename);
+ } while (g_file_test (filename, G_FILE_TEST_EXISTS));
+
+ return filename;