+
+String
+ly_scm2string (SCM s)
+{
+ int len;
+ char * p = gh_scm2newstr (s , &len);
+
+ String r (p);
+
+ free (p);
+ return r;
+}
+
+SCM
+index_cell (SCM s, Direction d)
+{
+ assert (d);
+ return (d == LEFT) ? SCM_CAR (s) : SCM_CDR (s);
+}
+
+
+SCM
+array_to_list (SCM *a , int l)
+{
+ SCM list = SCM_EOL;
+ for (int i= l; i--; )
+ {
+ list = gh_cons (a[i], list);
+ }
+ return list;
+}
+
+SCM
+ly_warning (SCM str)
+{
+ assert (gh_string_p (str));
+ warning ("lily-guile: " + ly_scm2string (str));
+ return SCM_BOOL_T;
+}
+
+SCM
+ly_isdir_p (SCM s)
+{
+ if (gh_number_p (s))
+ {
+ int i = gh_scm2int (s);
+ return (i>= -1 && i <= 1) ? SCM_BOOL_T : SCM_BOOL_F;
+ }
+ return SCM_BOOL_F;
+}
+
+
+void
+init_functions ()
+{
+ scm_make_gsubr ("ly-warn", 1, 0, 0, (SCM(*)(...))ly_warning);
+ scm_make_gsubr ("ly-gulp-file", 1,0, 0, (SCM(*)(...))ly_gulp_file);
+ scm_make_gsubr ("dir?", 1,0, 0, (SCM(*)(...))ly_isdir_p);
+}
+
+ADD_SCM_INIT_FUNC(funcs, init_functions);
+
+
+typedef void (*Void_fptr)();
+Array<Void_fptr> *scm_init_funcs_;
+
+void add_scm_init_func (void (*f)())
+{
+ if (!scm_init_funcs_)
+ scm_init_funcs_ = new Array<Void_fptr>;
+
+ scm_init_funcs_->push (f);
+}
+
+void
+init_lily_guile ()
+{
+ for (int i=scm_init_funcs_->size() ; i--;)
+ (scm_init_funcs_->elem (i)) ();
+}
+
+unsigned int ly_scm_hash (SCM s)
+{
+ return scm_ihashv (s, ~1u);
+}