return asscm;
}
+
+LY_DEFINE (ly_has_glyph_names_p, "ly:has-glyph-names?",
+ 1, 1, 0, (SCM font_file_name, SCM idx),
+ "Does the font for @var{font_file_name} have glyph names?"
+ " The optional @var{idx} argument is useful for"
+ " TrueType Collections (TTC) and"
+ " OpenType/CFF collections (OTC) only;"
+ " it specifies the font index within the TTC/OTC."
+ " The default value of @var{idx} is@tie{}0.")
+{
+ LY_ASSERT_TYPE (scm_is_string, font_file_name, 1);
+
+ int i = 0;
+ if (!SCM_UNBNDP (idx))
+ {
+ LY_ASSERT_TYPE (scm_is_integer, idx, 2);
+ i = scm_to_int (idx);
+ if (i < 0)
+ {
+ warning (_ ("font index must be non-negative, using index 0"));
+ i = 0;
+ }
+ }
+
+ string file_name = ly_scm2string (font_file_name);
+
+ FT_Face face;
+ /* check whether font index is valid */
+ if (i > 0)
+ {
+ face = open_ft_face (file_name, -1);
+ if (i >= face->num_faces)
+ {
+ warning (_f ("font index %d too large for font `%s', using index 0",
+ i, file_name.c_str ()));
+ i = 0;
+ }
+ FT_Done_Face (face);
+ }
+
+ face = open_ft_face (file_name, i);
+ bool has_glyph_names = FT_HAS_GLYPH_NAMES(face);
+ FT_Done_Face (face);
+
+ return has_glyph_names ? SCM_BOOL_T : SCM_BOOL_F;
+}